Self-fermented yoghurt as well as preparation method and package thereof

Abstract

The invention provides self-fermented yoghurt as well as a preparation method and a package thereof, and relates to the technical field of yoghurt. The preparation raw materials of the self-fermented yoghurt comprise zymophyte powder and an auxiliary agent which are packaged in a bottle cap of a packaging bottle, and liquid milk filled in a bottle body of the packaging bottle, the bottle cap is communicated with the bottle body by screwing the bottle cap, so that the zymophyte powder and the auxiliary agent packaged in the bottle cap are contacted with the liquid milk packaged in the bottle body, and the liquid milk is fermented. According to the method, a specially-made packaging bottle is adopted, before the packaging bottle is unsealed, zymophyte powder and auxiliaries in a bottle cap and liquid milk in the bottle body are in a dry-wet separation state, and good sealing performance and barrier performance are achieved through a first sealing film. When yoghurt needs to be made, the bottle cap is communicated with the bottle body by opening the first sealing film, so that materials can be mixed and fermented for preset time to form the yoghurt. The preparation method is simple, is not limited by factors such as time, space and place, and is very convenient for self-preparation of the yoghourt, and the obtained yoghourt is relatively good in taste.

Description

Technical Field

[0001] The present invention relates to the technical field of yogurt, and in particular to a self-fermenting yogurt and a preparation method and packaging thereof. Background Art

[0002] Yogurt is a sweet and sour milk drink made from pasteurized milk, to which beneficial bacteria (starter cultures) are added. After fermentation, it is cooled and bottled. Yogurt has laxative effects and is a calcium supplement.

[0003] However, yogurt is currently usually sold in the form of solid finished yogurt, and some additives are often added to prevent the substance from spoiling; some consumers also choose to use yogurt machines to prepare it themselves, but this method has limitations on production location, time, etc.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of the present invention includes providing a self-fermented yogurt and a production method and packaging thereof, which can solve or improve the above-mentioned technical problems.

[0006] The present invention can be achieved like this:

[0007] In a first aspect, the present invention provides a method for preparing self-fermented yogurt, wherein the raw materials include fermentation bacteria powder and auxiliary agents encapsulated in the bottle cap of a packaging bottle, and liquid milk filled in the bottle body of the packaging bottle;

[0008] The bottle cap of the packaging bottle has the following features: a first sealing film is provided between the bottle cap and the bottle body, for separating the fermentation bacteria powder and the auxiliary agent in the bottle cap and separating the liquid milk in the bottle body at the same time;

[0009] The bottle cap is screwed to connect the bottle cap with the bottle body, so that the fermentation bacteria powder and auxiliary agents encapsulated in the bottle cap come into contact with the liquid milk encapsulated in the bottle body, and ferment to obtain self-fermented yogurt.

[0010] In an optional embodiment, the fermentation bacteria powder includes Streptococcus thermophilus;

[0011] And / or, the auxiliary agent includes a substance capable of providing sweetness.

[0012] In an optional embodiment, the auxiliary agent includes a sweetener; more preferably, the sweetener includes at least one of sugar, functional sugar, high-intensity sweetener and edible flavor; further more preferably, the sweetener includes a sugar substitute; further preferably, the sweetener includes allulose.

[0013] In an optional embodiment, 10 5 cfu to 10 9 cfu of fermentation bacteria powder.

[0014] In an optional embodiment, 10 5 cfu to 10 8 cfu of fermentation bacteria powder; preferably, 10 cfu per gram of liquid milk 6 cfu to 10 7 cfu of fermentation bacteria powder.

[0015] In an optional embodiment, the mass ratio of the adjuvant to the liquid milk is 0.1:100 to 3:100.

[0016] In an optional embodiment, the particle size of the auxiliary agent is not less than 100 mesh.

[0017] In a second aspect, the present invention provides a package for the self-fermented yogurt, the package comprising a packaging bottle, the packaging bottle comprising a bottle cap and a bottle body, the bottle cap comprising an upper cover, a middle cover and a cutter;

[0018] The upper cover includes an upper cover body and a guide member arranged in the upper cover body;

[0019] The bottom of the middle cover is provided with a first sealing film for sealing the internal cavity of the middle cover, and the upper cover is screwed on the top of the middle cover. The upper cover, the middle cover and the first sealing film together form a storage cavity for accommodating fermentation bacteria powder and auxiliary agents;

[0020] The bottom of the cutter is provided with a cutting portion and a notch portion. The cutter is provided with a clamping strip corresponding to the guide of the upper cover. The clamping strip abuts against the guide and can move downward along the guide to cut the first sealing film when the upper cover is screwed open.

[0021] In an optional embodiment, the packaging bottle further comprises a lower cover;

[0022] The lower cover comprises a lower cover body and a second sealing film, wherein the lower cover body is a vertically arranged cylindrical structure with a top opening and a bottom opening;

[0023] The optional lower cover also includes a second inner plug ring that can be deformed under the action of tension, the second inner plug ring is arranged in the lower cover body, the top of the second inner plug ring is connected to the top of the lower cover body and the second inner plug ring extends along the top of the lower cover body toward the bottom of the lower cover body, an annular installation cavity for inserting the bottle mouth of the bottle body is formed between the outer wall of the second inner plug ring and the inner wall of the lower cover body, the second sealing film is connected to the bottom of the second inner plug ring for lifting the second sealing film when gas is generated in the bottle body, the second sealing film pulls the second inner plug ring to deform the annular installation cavity, and the deformed second inner plug ring and the bottle mouth form an exhaust channel for gas to flow out, and the lower cover body is arranged in the middle cover and is located below the first sealing film;

[0024] When the upper cover is screwed open, the clamping strip of the cutter moves downward along the guide member to synchronously cut the first sealing film and the second sealing film.

[0025] In an optional embodiment, in the assembled state, the top surface of the second sealing film is in contact with the bottom surface of the first sealing film, or there is a gap of no more than 3 mm between the top surface of the second sealing film and the bottom surface of the first sealing film.

[0026] In an optional embodiment, the middle cover includes a first middle cover portion and a second middle cover portion connected to each other, the first middle cover portion is used to connect to the upper cover, and the second middle cover portion is used to connect to the lower cover; the first middle cover portion has a cylindrical first inner cavity, the second middle cover portion has a cylindrical second inner cavity, the diameter of the second inner cavity is larger than the diameter of the first inner cavity, and the middle cover forms a stepped surface at the junction of the first inner cavity and the second inner cavity;

[0027] A first inner plug ring is provided in the second inner cavity, and the first sealing film is used for sealing the bottom of the first inner plug ring in an assembled state.

[0028] In an optional embodiment, an elastic pressure relief valve is further provided between the cavity wall of the bottle cap corresponding to the second inner cavity and the bottle body, so that when the gas in the bottle body opens the elastic pressure relief valve, a pressure relief channel connecting the bottle body and the outside is formed.

[0029] In an optional embodiment, an elastic pressure relief valve is further provided between the cavity wall of the bottle cap corresponding to the second inner cavity and the outer wall of the lower cover; so that when the gas in the bottle body opens the elastic pressure relief valve, a pressure relief channel connecting the bottle body and the outside is formed.

[0030] In an optional embodiment, an inner wall boss protruding inward in the radial direction is provided near the bottom of the second inner plug ring, and a sealing mounting ring is formed between the lower surface of the inner wall boss and the inner wall of the second inner plug ring below the inner wall boss, and the second sealing membrane is sealed and connected to the sealing mounting ring.

[0031] In an optional embodiment, the second inner plug ring is provided with an outer wall boss protruding outward in the radial direction near the bottom. The outer wall boss is located in the annular mounting cavity and is used to abut and seal the inner surface of the bottle mouth.

[0032] In an optional embodiment, the thickness of the second sealing film is 20 μm-100 μm.

[0033] In an optional embodiment, the distance between the outer wall of the second inner plug ring and the inner wall of the lower cover body is 0.5 mm-2.5 mm;

[0034] and / or, the thickness of the second inner plug ring is 0.5 mm to 2 mm;

[0035] And / or, the length of the second inner plug ring extending from the top of the lower cover body toward the bottom of the lower cover body is 0.1 mm-10 mm.

[0036] In an optional embodiment, after the bottle cap is unscrewed, the cutter extends downward by 0.5mm-5mm relative to the plane of the second sealing film before cutting, and / or, after the bottle cap is unscrewed, the first sealing film and the second sealing film are bent downward by 45°-90°.

[0037] In a third aspect, the present invention further provides a fermentation bacteria powder for self-fermented yogurt, which comprises thermophilic Streptococcus.

[0038] In an optional embodiment, the fermentation bacteria powder includes at least one of YSC1001, YSC1002, YSC1003 and RZ 4.50LOWAiBi;

[0039] The biological deposit number for YSC1001 is CGMCC No. 28251, the biological deposit number for YSC1002 is CGMCC No. 28252, and the biological deposit number for YSC1003 is CGMCC No. 28253. YSC1001 was deposited at the Center for General Microbiology, China Culture Collection Administration, at the Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, on August 25, 2023. Both YSC1002 and YSC1003 were deposited at the Center for General Microbiology, China Culture Collection Administration, at the Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, on August 23, 2023.

[0040] In an optional embodiment, the fermentation bacteria powder is composed of YSC1001, YSC1002 and YSC1003 in a mass ratio of (0.5-1.5):(3-5):(0.5-1.5);

[0041] Alternatively, the fermentation bacteria powder is composed of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi in a mass ratio of (0.5-1.5):(0.5-1.5):(0.5-1.5):(0.5-1.5).

[0042] In a fourth aspect, the present invention further provides a use of the above-mentioned fermentation bacteria powder in the production of yogurt.

[0043] In an optional embodiment, the fermentation bacteria powder is used for making self-fermented yogurt.

[0044] In a fifth aspect, the present invention also provides a method for making self-fermented yogurt, which includes the following steps: screwing the bottle cap to connect the bottle cap with the bottle body, thereby allowing the fermentation bacteria powder and auxiliary agents encapsulated in the bottle cap to contact the liquid milk encapsulated in the bottle body for fermentation.

[0045] In an alternative embodiment, the fermentation is carried out at room temperature for at least 24 hours, or at 36-38° C. for 4-5 hours.

[0046] The beneficial effects of the present invention include:

[0047] The self-fermenting yogurt provided by the present invention maintains a dry-wet separation between the fermentation bacteria powder and additives in the bottle cap and the liquid milk in the bottle body before the bottle is opened, achieving excellent sealing and barrier properties through the first sealing film. When yogurt is needed, the bottle cap is screwed to connect the cap and the bottle body, thereby mixing the ingredients and fermenting for a preset time to form yogurt. This production method is simple and unrestricted by time, space, or location. It can be prepared and consumed immediately, avoiding the need for preservatives and other additives, making it very convenient for homemade yogurt.

[0048] Moreover, the packaging bottles used for the self-fermenting yogurt are specially made packaging bottles, which can not only keep the liquid milk and the fermentation bacteria powder separated well before fermentation, but also facilitate the mixing and self-fermentation of materials when fermentation is required.

[0049] The fermentation bacteria powder used in the self-fermenting yogurt can prevent the yogurt from producing cheese flavor and milk odor, thereby improving the taste of the yogurt and helping to expand the consumer group of the yogurt. The fermentation bacteria powder is suitable for making yogurt. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 The biological deposit information and survival certificate of YSC1001 provided in the embodiments of the present invention;

[0052] Figure 2 The biological deposit information and survival certificate of YSC1002 provided in the embodiments of the present invention;

[0053] Figure 3 The biological deposit information and survival certificate of YSC1003 provided in the embodiments of the present invention;

[0054] Figure 4 An exploded view of the bottle cap capable of venting and releasing pressure used in the present invention;

[0055] Figure 5 A diagram of the assembled finished product of the bottle cap capable of venting and releasing pressure used in the present invention;

[0056] Figure 6A schematic structural diagram of the upper cover of the bottle cap capable of venting and releasing pressure used in the present invention from a first viewing angle;

[0057] Figure 7 A cross-sectional view of the upper cover of the bottle cap capable of venting and releasing pressure used in the present invention;

[0058] Figure 8 A schematic structural diagram of the upper cover of the bottle cap capable of venting and releasing pressure used in the present invention from a second viewing angle;

[0059] Figure 9 A cross-sectional view of a middle cap of a bottle cap capable of venting and releasing pressure used in the present invention;

[0060] Figure 10 This is a schematic structural diagram of the middle cover of the bottle cap capable of venting and relieving pressure used in the present invention;

[0061] Figure 11 This is a schematic structural diagram of the lower cover of the bottle cap capable of venting and relieving pressure used in the present invention;

[0062] Figure 12 A schematic structural diagram of the lower cover of the bottle cap capable of venting and releasing pressure used in the present invention, with the second sealing film omitted;

[0063] Figure 13 A front view of a lower cover of a bottle cap capable of venting and releasing pressure used in the present invention;

[0064] Figure 14 A cross-sectional view of the lower cover of the bottle cap capable of venting and releasing pressure used in the present invention when the internal and external air pressures are balanced;

[0065] Figure 15 A cross-sectional view of the lower cover of the bottle cap capable of venting and releasing pressure used in the present invention when the second sealing film is lifted up and the venting channel is opened when the internal and external air pressures are unbalanced;

[0066] Figure 16 A cross-sectional view of a cutter in a bottle cap capable of venting and releasing pressure used in the present invention;

[0067] Figure 17 A schematic structural diagram of a cutter in a bottle cap capable of venting and releasing pressure used in the present invention;

[0068] Figure 18 This is a schematic diagram of the bent structure of the first sealing film in the bottle cap capable of venting and relieving pressure used in the present invention after being cut by a cutter.

[0069] Icons: 10-bottle cap; 100-upper cover; 110-guide; 111-connecting edge; 112-arc edge; 113-vertical edge; 114-rotation stop; 114a-vertical short edge; 115-sealing ring; 116-inner thread of upper cover; 117-anti-theft ring of upper cover; 118-anti-theft positioning protrusion of upper cover; 119-first connecting point; 200-middle cover; 201-storage cavity; 202-first upper opening; 203-first lower opening; 210-first sealing film; 220-first middle cover part; 221-protrusion; 230-second middle cover part; 240-stepped surface; 241-sealing ring; 250-first inner plug ring; 2 60-elastic pressure relief valve; 300-lower cover; 301-second upper opening; 302-second lower opening; 310-lower cover body; 311-annular mounting cavity; 312-exhaust channel; 313-lower cover positioning ridge; 314-lower cover inner thread; 315-outer seal; 316-top seal; 317-lower cover anti-theft ring; 318-second connection point; 319-anti-theft positioning protrusion; 320-second inner plug ring; 321-outer wall boss; 322-inner wall boss; 323-sealing mounting ring; 330-second sealing film; 400-cutter; 401-cutting part; 402-notch part; 410-card strip; 430-guide groove. DETAILED DESCRIPTION

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0071] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0072] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0073] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and the like are intended solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0074] Furthermore, the use of terms such as "horizontal" and "vertical" does not necessarily mean that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but that it can be slightly tilted.

[0075] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0076] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0077] Example 1

[0078] This embodiment provides a fermentation bacteria powder for self-fermented yogurt, which includes thermophilic Streptococcus.

[0079] The fermentation bacteria powder includes at least one of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi. For example, it may include YSC1001 and YSC1002, or it may include YSC1001 and YSC1003, or it may include YSC1001 and YSC1003, or it may include YSC1001, YSC1002 and YSC1003, or it may include any one of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi, or it may include any two of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi, or it may include YSC1001, YSC1002, YSC1003 and RZ4.50LOW AiBi at the same time.

[0080] In this embodiment, YSC1001 belongs to Streptococcus thermophilus, whose biological deposit number is CGMCC No. 28251, and was deposited on August 25, 2023 at the General Microbiology Center of China Culture Collection Administration Committee, located at No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, Institute of Microbiology, Chinese Academy of Sciences. For the biological deposit information and survival certificate of this strain, please refer to Figure 1 .

[0081] YSC1002 also belongs to Streptococcus thermophilus. Its biological deposit number is CGMCC No. 28252. It was deposited on August 23, 2023 at the General Microbiology Center of China Culture Collection Administration, Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing. For the biological deposit information and survival certificate of this strain, please refer to Figure 2 .

[0082] YSC1003 also belongs to Streptococcus thermophilus. Its biological deposit number is CGMCC No. 28253. It was deposited on August 23, 2023 at the General Microbiology Center of China Culture Collection Administration, Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing. For the biological deposit information and survival certificate of this strain, please refer to Figure 3 .

[0083] RZ 4.50LOW AiBi also belongs to Streptococcus thermophilus and can be purchased from Mingfu (Shanghai) Health Technology Co., Ltd.

[0084] In some embodiments, the fermentation bacteria powder may be composed of YSC1001, YSC1002 and YSC1003 in a mass ratio of (0.5-1.5):(3-5):(0.5-1.5), such as the mass ratio of YSC1001, YSC1002 and YSC1003, which is illustrative but not limiting, may be 0.5:3:0.5, 0.5:3:1, 0.5:3:1.5, 0.5:4:0.5, 0.5:4:1, 0.5:4:1.5, 0.5:5: : 1.5, 1:5:3:0.5, 1:5:3:1, 1:5:3:1.5, 1:5:4:0.5, 1:5:4:1, 1:5:4:1.5, 1:5:5:0.5, 1:5:5:1, 1:5:5:1.5, 1:5:3:0.5, 1:5:3:1, 1:5:3:1.5, 1.5:4:0.5, 1.5:4:1, 1.5:4:1.5, 1.5:5:0.5, 1.5:5:1 or 1.5:5:1.5, etc. In some typical embodiments, the fermentation bacteria powder is composed of YSC1001, YSC1002 and YSC1003 in a mass ratio of 1:4:1.

[0085] In some other embodiments, the fermentation bacteria powder may be composed of YSC1001, YSC1002, YSC1003 and RZ 4.50LOWAiBi in a mass ratio of (0.5-1.5):(0.5-1.5):(0.5-1.5):(0.5-1.5), such as YSC1001, YSC1002, YSC1003 and RZ 4.50LOW The mass ratio of AiBi can be, by way of example but not limitation, 1:1:1:1, 0.5:0.5:0.5:1, 0.5:0.5:0.5:1.5, 0.5:0.5:1:0.5, 0.5:0.5:1:1, 0.5:0.5:1:1.5, 0.5:0.5:1.5:0.5, 0.5:0.5:1.5:1, 0.5:0.5:1.5:1.5, 0.5:0.5:1.5:1.5, 0.5:0.5:1.5:1.5. 5:1:0.5:0.5, 0.5:1:0.5:1, 0.5:1:0.5:1.5, 0.5:1:1:0.5, 0.5:1:1:1, 0.5:1:1:1.5, 0.5:1.5:0.5:1, 0.5:1.5:1:1, 0.5:1.5:1:1.5, 1:0.5:0.5:1, 1:0.5:1:1.5 or 1.5:1:1:1, etc. In some typical embodiments, the fermentation bacteria powder is composed of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi in a mass ratio of 1:1:1:1.

[0086] The fermentation bacteria powder can be used to make yogurt, and can be used to make self-fermented yogurt or to produce yogurt industrially.

[0087] By using the fermentation bacteria powder to make yogurt, the cheese smell and milk odor in the yogurt can be avoided or reduced, which is beneficial to improving the taste of the yogurt and expanding the consumer group of the yogurt.

[0088] Example 2

[0089] This embodiment provides a self-fermented yogurt, the raw materials for its preparation include a bottle cap 10 (combined with Figure 4 and Figure 5 ) and the fermentation bacteria powder and additives in the packaging bottle, as well as the liquid milk filled in the bottle body.

[0090] The fermentation bacteria powder provided in Example 1 can be used as the fermentation bacteria agent. In addition, it is not excluded that other commonly used yogurt fermentation bacteria powders can be compounded as needed.

[0091] In this embodiment, the auxiliary agent may include a substance that can provide sweetness. For example, the auxiliary agent may include a sweetener. Exemplarily, the sweetener may include at least one of sugar, functional sugar, high-intensity sweetener, and edible flavor. In some embodiments, the sweetener includes a sugar substitute, such as psicose.

[0092] As a reference, 10 5 cfu to 10 9 In some preferred embodiments, 10 cfu of fermentation bacteria powder is used per gram of liquid milk. 5 cfu to 10 8 cfu of fermentation bacteria powder; in some more preferred embodiments, 10 cfu of fermentation bacteria powder is used per gram of liquid milk. 6 cfu to 10 7 cfu of fermentation bacteria powder.

[0093] The mass ratio of the adjuvant to the liquid milk can be 0.1:100 to 3:100, such as 0.1:100, 0.5:100, 1:100, 1.5:100, 2:100, 2.5:100 or 3:100, or any other value within the range of 0.1:100 to 3:100.

[0094] By mixing the fermentation bacteria powder, the auxiliary agent and the liquid milk in the above proportions, the sour taste in the yogurt can be improved and the taste of the yogurt can be enhanced.

[0095] Preferably, the particle size of the auxiliary agent is not less than 100 meshes to avoid being stuck in the movable track of the cutter 400 and affecting the cutting effect of the cutter 400 .

[0096] In this embodiment, the method for making self-fermenting yogurt includes the following steps: screwing the bottle cap 10 to connect the bottle cap 10 with the bottle body, thereby allowing the fermentation bacteria powder and auxiliary agents encapsulated in the bottle cap 10 to contact the liquid milk encapsulated in the bottle body for fermentation.

[0097] For reference, fermentation can be carried out at room temperature for at least 24 hours, or at 36-38° C. for 4-5 hours. In addition, the fermentation temperature and time can be adjusted as needed.

[0098] The self-fermenting yogurt packaging used in this embodiment includes a bottle. A first sealing film 210 may be provided between the bottle cap 10 and the bottle body. This seal separates the fermentation bacteria powder and additives within the bottle cap 10 while also separating the liquid milk within the bottle body. The placement of the first sealing film 210 is not limited, as long as it can maintain the separation of the fermentation bacteria powder, additives, and liquid milk in an unfermented state. Furthermore, a second sealing film 330 or other structure may be provided between the bottle cap 10 and the bottle body as needed.

[0099] Taking the case where both the first sealing film 210 and the second sealing film 330 are provided, the first sealing film 210 is located above the second sealing film 330 . The first sealing film 210 is used to encapsulate the fermentation bacteria powder and the auxiliary agent in the bottle cap 10 , and the second sealing film 330 is used to encapsulate the liquid milk in the bottle body.

[0100] For details, please refer to Figure 4 and Figure 5 The bottle cap 10 of the packaging bottle includes an upper cover 100 , a middle cover 200 , a lower cover 300 and a cutter 400 .

[0101] The upper cover 100 includes an upper cover body and a first guide assembly disposed within the upper cover body. In some embodiments, the upper cover body is a vertically arranged cylindrical structure with a sealed top and an open bottom. The first guide assembly is connected to the top inner side of the upper cover body and is arranged in an arc shape from the top to the bottom of the upper cover 100.

[0102] Combine Figure 6 and Figure 7 The upper cover is provided with a sealing ring 115, which is located on the upper surface of the upper cover and extends downward from the upper surface of the upper cover. The first guide assembly is located inside the sealing ring 115, which can also be understood as: the sealing ring 115 is located between the side wall of the upper cover and the first guide assembly. When the upper cover 100 and the middle cover 200 are closed, the upper side wall of the middle cover 200 is located between the first guide assembly and the sealing ring 115, thereby ensuring a good seal between the upper cover 100 and the middle cover 200.

[0103] In addition, combined Figure 4 and Figure 8The inner wall of the upper cover body is also provided with an upper cover internal thread 116, and the upper cover internal thread 116 is used to connect with the middle cover 200. The bottom of the upper cover body is provided with an upper cover anti-theft ring 117, and the inner wall of the upper cover anti-theft ring 117 is provided with a plurality of upper cover anti-theft positioning protrusions 118. During the production process of the upper cover 100, the top of the upper cover anti-theft ring 117 is connected to the bottom edge of the upper cover body through a plurality of first connection points 119. The upper cover anti-theft ring 117 and the upper cover body are integrally formed, and then an intermittent annular cutting knife is used to perform annular cutting, thereby forming a plurality of first connection points 119 at the connection position of the upper cover anti-theft ring 117 and the upper cover body. The setting of the plurality of first connection points 119 can ensure the connection between the upper cover anti-theft ring 117 and the upper cover body. At the same time, it can also be used to judge whether the product is complete or has been opened.

[0104] The middle cover 200 is a cylindrical structure with a vertical top opening and a bottom opening. Figure 9 The top opening of the middle cover 200 is defined as the "first upper opening 202", and the bottom opening is defined as the "first lower opening 203". The upper cover 100 is screwed onto the top of the middle cover 200. For example, the upper cover 100 is connected to the first upper opening 202 by screws.

[0105] Reference Figure 10 The bottom of the middle cover 200 is provided with a first sealing film 210 for sealing the internal cavity of the middle cover 200. The upper cover 100, the circumferential side wall of the middle cover 200 and the first sealing film 210 together form a storage cavity 201 for accommodating fermentation bacteria powder and auxiliary agents.

[0106] The diameter of the first lower opening 203 of the middle cover 200 is slightly larger than the outer diameter of the lower cover 300 so that the lower cover 300 can be connected to the first lower opening 203 , and the top of the lower cover 300 is located inside the middle cover 200 .

[0107] In this embodiment, the middle cover 200 includes a first middle cover portion 220 and a second middle cover portion 230 that are interconnected. The first middle cover portion 220 is used to connect to the upper cover 100, and the second middle cover portion 230 is used to connect to the lower cover 300. The first middle cover portion 220 has a cylindrical first inner cavity, and the second middle cover portion 230 has a cylindrical second inner cavity. The inner diameter of the second inner cavity is larger than that of the first inner cavity. A stepped surface 240 is formed at the junction of the first and second inner cavities.

[0108] A first inner ring 250 is disposed within the second inner cavity of the middle cover 200. The first inner ring 250 extends from the stepped surface 240 toward the second inner cavity and is in communication with the first inner cavity. A first sealing film 210 seals the bottom of the first inner ring 250 (this can also be understood as the edge of the first sealing film 210 being connected to the end of the first inner ring 250 away from the stepped surface 240). This allows the upper cover 100, the middle cover 200, and the first sealing film 210 to enclose a storage cavity 201 for accommodating fermentation bacteria powder and additives. Specifically, the upper cover 100, the first inner cavity of the middle cover 200, the first inner ring 250, and the first sealing film 210 collectively form the storage cavity 201. Initially, the cutter 400 is located within the storage cavity 201.

[0109] In some embodiments, a sealing ring 241 is provided on the inner wall of the middle cap 200 corresponding to the stepped surface 240, and the first inner plug ring 250 is located inside the middle cap 200 on the inner side of the sealing ring 241. The provision of the sealing ring 241 can improve the sealing performance after the bottle cap 10 is connected to the bottle body.

[0110] In this embodiment, the first sealing film 210 can be a multi-layer composite structure. There are many options for the first sealing film 210, including but not limited to polyethylene (PE), polyvinyl alcohol (PVOH), polypropylene (PP), polyvinyl ester (EVA), polyester (PET), aluminum foil, etc.

[0111] In some embodiments, the first sealing film 210 may include a PET outer layer, an Al middle layer, and a PE inner layer stacked in sequence. The PET outer layer, Al middle layer, and PE inner layer may be connected using conventional lamination techniques, with the edge of the PE inner layer connected to the bottom of the storage cavity 201. The thickness of the first sealing film 210 may be 20 μm to 100 μm, such as 20 μm, 40 μm, 60 μm, 80 μm, or 100 μm.

[0112] By configuring the first sealing film 210 with the aforementioned structure and material, it is ensured to have suitable strength. By screwing the upper cap 100, the cutter 400 can be easily moved downward to cut the first sealing film 210. However, it should be noted that to ensure drinking safety, it is necessary to ensure that a portion of the first sealing film 210 remains connected to the first inner plug ring 250 after the cutter 400 cuts the first sealing film 210.

[0113] The provision of the first inner plug ring 250 can ensure that the storage cavity 201 has a larger volume even when the overall volume of the middle cover 200 is small; when the outer diameter of the second inner plug ring 320 is slightly smaller than the inner diameter of the bottle mouth of the bottle body, after the bottle body and the bottle cover 10 are connected, the second inner plug ring 320 is just inserted into the bottle mouth, which can play a better sealing role.

[0114] In this embodiment, please combine Figures 11 to 15 The lower cover 300 includes a lower cover body 310 and a second sealing film 330. The lower cover body 310 is a vertically arranged cylindrical structure with a top opening (defined as "second upper opening 301") and a bottom opening (defined as "second lower opening 302"). The diameter of the second upper opening 301 is slightly larger than the outer diameter of the first inner plug ring 250.

[0115] The lower cover 300 further includes a second inner plug ring 320 that can be deformed under the action of tension. The second inner plug ring 320 is disposed in the lower cover body 310. For example, the second inner plug ring 320 and the lower cover body 310 are integrally formed and disposed in the lower cover body 310. The second inner plug ring 320 extends along the top of the lower cover body 310 toward the bottom. The top of the second inner plug ring 320 is connected to the top of the lower cover body 310 (e.g., fixedly connected). An annular mounting cavity 311 is formed between the outer wall of the second inner plug ring 320 and the inner wall of the lower cover body 310 for inserting the bottle mouth (not shown) of the bottle body (not shown). The second sealing film 330 is connected to the bottom of the second inner plug ring 320 for lifting the second sealing film 330 when gas is generated in the bottle body. The second sealing film 330 pulls the second inner plug ring 320 to deform the annular mounting cavity 311. The deformed second inner plug ring 320 and the bottle mouth form an exhaust channel 312 (e.g., Figure 15 ).

[0116] In this embodiment, the lower cover body 310 is arranged in the middle cover 200 and is located below the first sealing film 210. When the lower cover 300 and the middle cover 200 are assembled, the top surface of the second sealing film 330 is in contact with the bottom surface of the first sealing film 210 or has a gap of no more than 3 mm, so that the first sealing film 210 and the second sealing film 330 can be cut at the same time.

[0117] In this embodiment, the second sealing film 330 is used to seal the opening surrounded by the second inner plug ring 320. When the second sealing film 330 is squeezed by the gas pressure in the bottle, it will bulge upward. At this time, the second sealing film 330 can pull the second inner plug ring 320 to produce a slight movement, thereby opening the seal in the annular mounting cavity 311, thereby forming an exhaust channel 312 for the gas in the bottle to be discharged, thereby achieving exhaust and pressure relief.

[0118] The structure of the lower cover 310 is similar to that of a conventional bottle cap 10 , and the lower cover 310 may also adopt the design of an existing conventional bottle cap 10 as long as the bottle body can be connected and sealed.

[0119] Specifically for this embodiment, please refer to Figures 11 to 15 The outer wall of the lower cover body 310 is vertically provided with a plurality of lower cover positioning ridges 313; the setting of the lower cover positioning ridges 313 is convenient for increasing the friction force at the contact position between the consumer and the bottle cap 10, thereby facilitating the opening of the bottle cap 10.

[0120] The inner wall of the lower cover body 310 is provided with a lower cover inner thread 314 (such as Figure 15 The internal thread 314 of the lower cap is threadably connected to the external thread of the bottle opening, thereby effectively assembling the bottle body and the bottle cap 10, thereby sealing the product stored in the bottle. Furthermore, when the lower cap 310 is rotated upward along the internal thread 314 of the lower cap, the lower cap 310 can be separated from the bottle body to open the bottle opening. When the lower cap 310 is rotated downward along the internal thread 314 of the lower cap, the lower cap 310 can be threadably connected to the bottle body to close the bottle opening, thereby resealing the unconsumed product in the bottle.

[0121] Please refer to Figure 14 and Figure 15 In order to enhance the sealing effect, in this embodiment, an outer seal 315 for sealing the outer surface of the bottle mouth and a top seal 316 for sealing the top surface of the bottle mouth are provided on the inner side of the top of the lower cover body 310, and the top seal 316 is located between the outer seal 315 and the second inner plug ring 320; wherein, the outer seal 315 and the top seal 316 are both structures protruding downward from the inner side of the top of the lower cover body 310, and the protruding height of the top seal 316 is less than the protruding height of the outer seal 315. Through the arrangement of the outer seal 315 and the top seal 316, the outer side and the top of the bottle mouth of the bottle body are sealed, and the sealing effect is better.

[0122] The bottom of the lower cover 310 is also provided with a lower cover anti-theft ring 317, which is located below the lower cover positioning ridge 313. During the production process of the lower cover 300, the top of the lower cover anti-theft ring 317 is connected to the bottom edge of the lower cover 310 through multiple second connection points 318. The lower cover anti-theft ring 317 and the lower cover 310 can be integrally formed and then intermittently cut by a ring cutter, thereby forming multiple second connection points 318 at the connection position of the lower cover anti-theft ring 317 and the lower cover 310. The provision of multiple second connection points 318 can ensure the connection between the lower cover anti-theft ring 317 and the lower cover 310, and at the same time, it can also be used to determine whether the product is complete or has been opened. Among them, the inner surface of the lower cover anti-theft ring 317 is spaced apart with multiple anti-theft positioning protrusions 319 for clamping the bottle mouth. Correspondingly, a continuous anti-theft retaining ring is provided below the outer thread of the bottle mouth. The anti-theft retaining ring protrudes from the outer surface of the bottle mouth. A bottle mouth positioning groove is formed between the anti-theft retaining ring and the bottom protrusion of the bottle mouth. The anti-theft positioning protrusion 319 is embedded in the bottle mouth positioning groove and can rotate within the bottle mouth positioning groove. When the lower cover 300 is rotated, the lower cover body 310 moves upward under the cooperation of the lower cover internal thread 314 and the bottle mouth external thread, while the anti-theft positioning protrusion 319 can only rotate within the bottle mouth positioning groove but cannot move up and down. When the rotational force is greater than the connection force between the multiple second connection points 318 of the lower cover body 310 and the lower cover anti-theft ring 317, the lower cover body 310 and the lower cover anti-theft ring 317 are separated, thereby opening the lower cover body 310 and retaining the lower cover anti-theft ring 317 in the bottle mouth positioning groove.

[0123] In this embodiment, the second inner plug ring 320 is used to seal the bottle mouth. At the same time, when the internal pressure is greater than the external pressure, it can be stretched and deformed by the second sealing film 330, thereby changing the sealed state into a state where air can be exhausted and pressure released.

[0124] Specifically, combined Figure 14 and Figure 15 The bottle mouth is sealed using an outer wall boss 321, located near the bottom of the second inner ring 320 and projecting radially outward from the second inner ring 320. Located within the annular mounting cavity 311, the boss 321 abuts against and seals the inner surface of the bottle mouth. The curved boss 321 compresses the bottle mouth when in contact, enhancing the seal.

[0125] The connection between the second inner ring 320 and the second sealing film 330 is achieved using an inner wall boss 322. This boss 322 is located near the bottom and protrudes inward radially from the second inner ring 320. A sealing mounting ring 323 is formed between the lower surface of the boss 322 and the inner wall of the second inner ring 320 below the boss 322. The second sealing film 330 is sealed to the sealing mounting ring 323. The boss 322 provides space for the connection of the second sealing film 330 and allows for hot-melt connection of both the side edges and the top of the second sealing film 330, resulting in a more effective and stronger connection. This ensures that the second sealing film 330 is lifted when the internal pressure exceeds the external pressure, thereby driving the movement of the second inner ring 320. Furthermore, the boss 322 provides support for the edges of the second sealing film 330, preventing cracks.

[0126] To enable the second inner ring 320 to be deformed by the second sealing film 330, in this embodiment, the thickness of the second inner ring 320 can be limited to 0.5 mm to 2 mm, and the extension length of the second inner ring 320 can be 0.1 mm to 10 mm. In some embodiments, the thickness of the second inner ring 320 can be, for example, any one of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm, or a range between any two of these. In some embodiments, the extension length of the second inner plug ring 320 can be, for example, 0.1 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, or any range between any two of them.

[0127] Furthermore, the second inner ring 320 can be made of HDPE, or high-density polyethylene, an environmentally friendly material with low permeability to water vapor and air and low water absorption. Therefore, it effectively seals the bottle mouth and facilitates a sealed connection with the second sealing film 330. It has excellent hardness and tensile strength, and while ensuring a tight seal, it can easily deform under external forces (e.g., internal and external pressures) and reset itself after the external forces disappear. It should be understood that in this embodiment, when the second sealing film 330 bulges to pull the second inner ring 320, the amplitude of the change in the second inner ring 320 is minimal, and only a small gap needs to be formed to serve as the exhaust channel 312 for the exhaust of excess gas within the bottle.

[0128] The gap distance of the annular mounting cavity 311 formed between the outer wall of the second inner plug ring 320 and the inner wall of the lower cover body 310 can be 0.5mm-2.5mm (that is, the distance between the outer wall of the second inner plug ring 320 and the inner wall of the lower cover body 310 is 0.5mm-2.5mm). The size of the annular mounting cavity 311 corresponds to the thickness of the bottle mouth of the bottle body, which facilitates the insertion of the bottle mouth into the annular mounting cavity 311.

[0129] The second sealing film 330 in this embodiment is a thin film structure, which can be pushed up and bulge when the internal pressure is greater than the external pressure. That is, the second sealing film 330 changes from a flat structure to an arc structure, showing a structure with low sides and high middle. Since the edge of the second sealing film 330 is sealed with the sealing mounting ring 323 of the second inner plug ring 320, when the second sealing film 330 is pushed up, it can cause the second inner plug ring 320 to deform slightly (such as Figure 15 As shown), the annular mounting cavity 311 opens a gap to form an exhaust channel 312, and the excess gas in the bottle body can be discharged from the exhaust channel 312 to achieve the purpose of exhaust and pressure relief.

[0130] It should be understood that the second sealing film 330 in this embodiment should be installed as close as possible to the bottom of the second inner ring 320 to facilitate the second sealing film 330 pulling the second inner ring 320. If the second sealing film 330 is installed at the top or middle of the second inner ring 320, it will be difficult to pull the second inner ring 320 to deform it, and it will be difficult to open the annular installation cavity 311 to form the exhaust channel 312 for exhaust and pressure relief.

[0131] For reference, the film structure of the above-mentioned second sealing film 330 can also be a multi-layer composite structure. There are many options for the second sealing film 330. For example, the material of the second sealing film 330 of conventional dairy products such as milk or yogurt includes but is not limited to polyethylene (PE), polyvinyl alcohol (PVOH), polypropylene (PP), polyvinyl ester (EVA), polyester (PET), aluminum foil, etc.

[0132] Specifically, the second sealing film 330 in this embodiment comprises a PET outer layer, an Al middle layer, and a PE inner layer, which are sequentially overlapped and connected. The PET outer layer, Al middle layer, and PE inner layer can be connected using conventional lamination techniques. The edge of the PE inner layer is heat-melt-sealed to the sealing mounting ring 323. In this embodiment, the multi-layer film composite structure ensures that the second sealing film 330 has high strength and is not easily damaged. Furthermore, the thickness of the second sealing film 330 is limited to 20 μm-100 μm, ensuring its good flexibility and the ability to deform under the pressure of excess gas in the bottle, thereby driving the deformation of the second inner plug ring 320.

[0133] In other embodiments, the second sealing film 330 may further include an Al layer and an adhesive layer coated on the Al layer, and the edge of the adhesive layer is connected to the sealing mounting ring 323 by hot melt sealing.

[0134] That is, in this embodiment, the second sealing film 330 may be made of a variety of materials or structures, as long as it can be deformed and bulged under a certain air pressure and has a certain strength to pull the second inner ring 320 .

[0135] In addition, in some embodiments, an elastic pressure relief valve 260 is provided between the wall of the bottle cap 10 corresponding to the second inner cavity and the bottle body, so that when the gas in the bottle body opens the elastic pressure relief valve 260, a pressure relief passage is formed between the bottle body and the outside world. For example, the cutter 400 is used to form a pressure relief passage between the bottle body and the outside world when cutting the first sealing film 210.

[0136] In other embodiments, an elastic pressure relief valve 260 (such as a pressure relief valve 260) is provided between the wall of the bottle cap 10 corresponding to the second inner cavity and the outer wall of the lower cover 300. Figure 16 As shown), when the gas in the bottle opens the elastic pressure relief valve 260, a pressure relief passage is formed between the bottle and the outside. For example, the cutter 400 is used to form a pressure relief passage between the bottle and the outside when cutting the first sealing film 210 and the second sealing film 330.

[0137] Under the above-mentioned condition of setting the elastic pressure relief valve 260, when the gas generated in the bottle makes the gas pressure high enough, pressure can be applied to the elastic pressure relief valve, causing the elastic pressure relief valve to deform, so that the pressure relief channel opens and the gas is discharged.

[0138] Please combine Figures 16 to 18 In this embodiment, the cutter 400 is a cylindrical structure with an opening at the top and an opening at the bottom. The cutter 400 is provided with a first matching component that matches the first guide component. In the initial state, the cutter 400 is located in the storage cavity 201.

[0139] Please combine Figure 6 and Figure 16 The first guide assembly includes a plurality of guide members 110 distributed in a circular array, each guide member 110 is vertically arranged, and each guide member 110 includes a connecting edge 111 and an arcuate edge 112 (such as Figure 6 The connecting edge 111 is connected to the inner top wall of the upper cover 100 , and one end of the connecting edge 111 is connected to the arcuate edge 112 .

[0140] The first mating component includes the same number of card strips 410 as the guide member 110 (eg Figure 17), that is, the cutter 400 is provided with a clamping strip 410 corresponding to the guide member 110 of the upper cover 100, and the clamping strip 410 abuts against the guide member 110. Each clamping strip 410 is vertically provided on the inner wall of the cutter 400 and extends to the top of the cutter 400. All the clamping strips 410 are distributed in a circular array on the inner wall of the cutter 400.

[0141] Initially, the cutter 400 is mounted outside the first guide assembly, with each clip 410 located between two adjacent guide members 110. When the upper cover 100 is screwed on, the guide members 110 rotate, causing each clip 410 to move along the arcuate edge 112, thereby driving the cutter 400 to rotate and move downward.

[0142] Each guide member 110 further comprises a vertical edge 113 (e.g. Figure 6 ), the vertical edge 113 is connected to the end of the connecting edge 111 away from the arcuate edge 112. The spacing between two adjacent guide members 110 matches the size of the clamping strip 410 (for example, the spacing between two adjacent guide members 110 is the same as the size of the clamping strip 410). When the upper cover 100, the cutter 400, and the middle cover 200 are just assembled and not screwed together, the clamping strip 410 is exactly in contact with the vertical edge 113. When the upper cover 100 is screwed, the clamping strip 410 separates from the vertical edge 113 and moves along the trajectory of the arcuate edge 112.

[0143] In some embodiments, it can also be understood that: the guide member 110 is triangular in shape, wherein the first side (connecting side 111) is connected to the top inner wall of the upper cover body in an arc shape, the second side (vertical side 113) is perpendicular to the top inner wall of the upper cover body and extends in a direction away from the top of the upper cover body, and the third side (arc side 112) is smoothly connected from the first side to the top of the second side in an arc shape, and the cutter 400 moves along the third side, that is, the third side guides the cutter 400.

[0144] Furthermore, each guide member 110 may also have a rotation stop 114 (e.g. Figure 6 ), the rotation-stopping portion 114 is provided at one end of the arcuate edge 112 away from the connecting edge 111, and the side of the rotation-stopping portion 114 close to the arcuate edge 112 may be, for example, a vertical short side 114a.

[0145] When the clip 410 moves along the arcuate edge 112, it will be blocked by the vertical short edge 114a when it reaches the end of the arcuate edge 112, preventing it from moving further, thereby playing a role of stopping rotation, and effectively preventing the cutter 400 from excessively rotating and causing the first sealing film 210 and the second sealing film 330 to be completely cut.

[0146] In this embodiment, please refer to Figures 16 to 18The bottom end of the cutter 400 has a cutting portion 401 and a notch portion 402 connected end to end. For example, the length of the cutting portion 401 can be 1 / 2-4 / 5 of the circumference of the cutter 400, and the cutting portion 401 has multiple cutting teeth. It can be understood that the notch portion 402 is formed in the circumferential area of the bottom end of the cutter 400 where no cutting teeth are provided. This ensures that after the cutting teeth cut through the first and second sealing films 210, 330 along the circumference, some uncut areas remain in both the first and second sealing films 210, 330, preventing them from falling into the bottle after opening.

[0147] By screwing on the upper cover 100, the first guide assembly cooperates with the first mating assembly to drive the cutter 400 to rotate downward. The cutting portion 401 of the cutter 400 successively cuts the first sealing film 210 and the second sealing film 330. The portion of the first sealing film 210 corresponding to the notch 402 remains connected to the bottom of the storage cavity 201, and the portion of the second sealing film 330 corresponding to the notch remains connected to the lower cover 300, effectively preventing the first and second sealing films 210, 330 from falling into the bottle body. Continuing to screw on the upper cover 100, the cutter 400 extends downward relative to the plane of the second sealing film 330 before cutting (the extension length can be, for example, 0.5mm-5mm). At this extension length, it can push the first and second sealing films 210, 330 to bend downward, and the bending angle is controlled to be between 45° and 90°. It should be noted that the above-mentioned "bending angle" refers to the angle between the plane of the bent sealing film and the plane of the sealing film before cutting.

[0148] The above arrangement enables the fermentation bacteria powder and auxiliary agents in the storage cavity 201 to fall into the bottle body in an effective and quantitative manner, thereby achieving quantitative mixing of the fermentation bacteria powder and auxiliary agents with the liquid milk in the bottle body, ensuring that the fermented yogurt has a good taste.

[0149] Continuing from the above, the bottle cap 10 provided in this embodiment, with its cutting portion 401 and notch 402 at the bottom end of the cutter 400, combined with the first sealing film 210 inside the middle cover 200, the second sealing film 330 of the lower cover 300, and other structures, as well as the cutter 400 extending downward by 0.5mm-5mm, can achieve that during the opening of the bottle cap 10, the cutter 400 can successively cut the first sealing film 210 and the second sealing film 330, and push the first sealing film 210 and the second sealing film 330 downward to bend the first sealing film 210 and the second sealing film 330 at an appropriate angle, thereby allowing the fermented bacteria powder and auxiliary agents contained in the storage cavity 201 to be smoothly discharged from the second lower opening 302. When the bottle cap 10 is placed on the bottle body, the fermented bacteria powder and auxiliary agents can be smoothly discharged from the second lower opening 302 into the bottle body and mixed with the liquid milk contained therein, thereby improving or resolving the problem of the second sealing film 330 blocking the downward discharge of solid powder.

[0150] In this embodiment, a second guide component is further provided on the side wall of the middle cover 200 corresponding to the storage cavity 201 , and a second matching component that matches the second guide component is provided on the outer wall of the cutter 400 .

[0151] Please combine Figure 9 and Figure 17 The second guide component includes a plurality of protrusions 221 arranged on the side wall of the middle cover 200 corresponding to the storage cavity 201, and the second matching component includes a plurality of guide grooves 430 arranged on the outer wall of the cutter 400.

[0152] The upper cover 100 is screwed, and each guide groove 430 moves until the corresponding protrusion 221 is located in the guide groove 430 . Each guide groove 430 is stuck outside the corresponding protrusion 221 to move the cutter 400 along the extension direction of the guide groove 430 .

[0153] In other embodiments of the present invention, the second guide assembly includes a plurality of guide grooves 430 provided on the sidewall of the middle cover 200 corresponding to the storage cavity 201, and the second mating assembly includes a plurality of protrusions 221 provided on the outer wall of the cutter 400. When the upper cover 100 is screwed on, each protrusion 221 moves into the corresponding guide groove 430 and moves along the extension direction of the guide groove 430.

[0154] Continuing from the above, when the bottle cap 10 is connected to the bottle body, the outer thread of the bottle mouth mates with the inner thread 314 of the lower cover 300, achieving a sealed connection. During use, the upper cover 100 is twisted open, and the retaining strip 410 moves downward along the guide 110 to simultaneously cut the first sealing film 210 and the second sealing film 330. The storage chamber 201 is now open, and the fermentation bacteria powder and auxiliary agent leak from the storage chamber 201 into the bottle body, completing the opening.

[0155] The lower cover 300 uses the gap between the second inner plug ring 320 and the inner wall of the lower cover body 310 to form an annular installation cavity 311, and the bottle mouth of the bottle body is inserted into the annular installation cavity 311 to achieve installation and sealing, and the second sealing film 330 connected to the bottom of the second inner plug ring 320 can be lifted up when gas is generated in the bottle body. The deformation of the second sealing film 330 will pull the second inner plug ring 320 to produce a slight movement, thereby opening the seal in the annular installation cavity 311 to form an exhaust channel 312 for the gas in the bottle body to be discharged, thereby achieving exhaust and pressure relief. The above-mentioned bottle cap 10 has a simple structure. It only needs to be provided with a second sealing film 330 that can undergo a certain deformation when the air pressure in the bottle body is greater than the external air pressure. By using the second sealing film 330 to pull the second inner plug ring 320, the excess gas in the bottle body can be exhausted and pressure relieved in a timely manner, effectively avoiding the occurrence of increased bottle pressure, bottle expansion, etc., thereby improving the safety of the packaging bottle. In addition, the bottle cap 10 can realize automatic exhaust and pressure relief without manual operation, and its structure is simple, which can be realized in industrial production.

[0156] In addition, the second sealing film 330 can be made of a variety of materials and has a wide range of uses. The double-layer film can be used for sealing to achieve the effect of separating wet and dry items.

[0157] Furthermore, the packaging bottle further comprises a bottle body and a bottle mouth portion located at the opening of the bottle body, and the bottle mouth portion is inserted into the annular mounting cavity 311 of the bottle cap 10 .

[0158] Since the structure of the bottle body in this embodiment is substantially the same as that of the existing bottle body, the bottle mouth is also substantially the same as that of the existing bottle body. Specifically, the bottle mouth is provided with an external bottle mouth thread, which can match the lower cover internal thread 314 on the inner wall of the lower cover body 310 (please refer to Figure 14 and Figure 15 ,), realizing the threaded connection between the lower cover body 310 and the bottle mouth, and also facilitating the lower cover body 310 to be opened or closed when rotating along the lower cover inner thread 314.

[0159] Please refer to Figure 14 and Figure 15 When the bottle mouth is opened, the anti-theft ring 317 of the lower cover is retained in the bottle mouth positioning groove.

[0160] This embodiment, based on a conventional bottle structure, uses the bottle cap 10 of Example 1 as the sealing structure of the bottle body. It not only achieves basic sealing, but also realizes storage and exhaust and pressure relief functions (no air leakage and pressure relief under 30 PSI conditions, automatic air leakage and pressure relief under 80 PSI conditions). It can achieve the effect of dry and wet separation, ensure that the taste and efficacy of the product are maintained during the shelf life, and facilitate the smooth addition of sensitive substances, effectively extending the shelf life of the product and ensuring the good quality of the product.

[0161] During production, the upper cover 100 and the middle cover 200 can be assembled on a single production line. Specifically, the fermentation bacteria powder and additives are placed in the storage cavity 201, and the upper cover 100 and the middle cover 200 are assembled. The lower cover 300 and the bottle body are assembled on a single production line. Liquid milk is filled into the bottle body and sealed with the lower cover 300. After the products from both production lines are filled and assembled, the first lower opening 203 of the middle cover 200 is placed on the lower cover 300, completing the aseptic production of the entire beverage product.

[0162] When yogurt is to be made, the cutter 400 rotates downward and simultaneously cuts the first sealing film 210 and the second sealing film 330, thereby mixing the materials and fermenting them for a predetermined time to form yogurt. This method is simple and is not limited by time, space, or location, making it very convenient for making yogurt on your own.

[0163] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A self-fermented yogurt, characterized in that The raw materials for preparing the self-fermented yogurt include fermentation bacteria powder and auxiliary agents encapsulated in the bottle cap of the packaging bottle, and liquid milk filled in the bottle body of the packaging bottle; The bottle cap of the packaging bottle has the following features: a first sealing film is provided between the bottle cap and the bottle body, for separating the fermentation bacteria powder and the auxiliary agent in the bottle cap and simultaneously separating the liquid milk in the bottle body; The bottle cap is screwed to connect the bottle cap with the bottle body, so that the fermentation bacteria powder and the auxiliary agent encapsulated in the bottle cap are in contact with the liquid milk encapsulated in the bottle body, and fermented to obtain the self-fermented yogurt.

2. The self-fermented yogurt according to claim 1, characterized in that The fermentation bacteria powder includes Streptococcus thermophilus; And / or, the auxiliary agent includes a substance capable of providing sweetness; Preferably, the auxiliary agent includes a sweetener; more preferably, the sweetener includes at least one of sugar, functional sugar, high-intensity sweetener and edible flavor; further more preferably, the sweetener includes a sugar substitute; further preferably, the sweetener includes allulose.

3. The self-fermented yogurt according to claim 2, characterized in that Each gram of the liquid milk corresponds to 10 5 cfu to 10 9 cfu of the fermented bacterial powder; and / or, the mass ratio of the auxiliary agent to the liquid milk is 0.1:100 to 3:100; Preferably, 10 5 cfu to 10 8 cfu of the fermentation bacteria powder; further preferably, 10 6 cfu to 10 7 cfu of the fermented bacterial powder; Preferably, the particle size of the auxiliary agent is not less than 100 mesh.

4. A package for the self-fermented yogurt according to any one of claims 1 to 3, characterized in that: The package includes a packaging bottle, the packaging bottle includes a bottle cap and a bottle body, and the bottle cap includes an upper cover, a middle cover and a cutter; The upper cover includes an upper cover body and a guide member arranged in the upper cover body; The bottom of the middle cover is provided with a first sealing film for sealing the internal cavity of the middle cover, and the upper cover is screwed on the top of the middle cover. The upper cover, the middle cover and the first sealing film together form a storage cavity for accommodating fermentation bacteria powder and auxiliary agents; The bottom of the cutter is provided with a cutting portion and a notch portion, and the cutter is provided with a clamping strip corresponding to the guide member of the upper cover. The clamping strip abuts against the guide member and can move downward along the guide member to cut the first sealing film when the upper cover is screwed open.

5. The packaging according to claim 4, characterized in that The packaging bottle also includes a lower cover; The lower cover comprises a lower cover body and a second sealing film, wherein the lower cover body is a vertically arranged cylindrical structure with a top opening and a bottom opening; The lower cover optionally further comprises a second inner plug ring which can be deformed under the action of tension, the second inner plug ring being arranged in the lower cover body, the top of the second inner plug ring being connected to the top of the lower cover body and the second inner plug ring extending along the top of the lower cover body toward the bottom of the lower cover body, an annular mounting cavity for inserting the bottle mouth of the bottle body is formed between the outer wall of the second inner plug ring and the inner wall of the lower cover body, the second sealing film being connected to the bottom of the second inner plug ring for lifting the second sealing film when gas is generated in the bottle body, the second sealing film pulling the second inner plug ring to deform the annular mounting cavity, the deformed second inner plug ring and the bottle mouth forming an exhaust channel for gas to flow out, the lower cover body being arranged in the middle cover and located below the first sealing film; When the upper cover is screwed open, the clip of the cutter moves downward along the guide member to synchronously cut the first sealing film and the second sealing film; Preferably, in the assembled state, the top surface of the second sealing film is in contact with the bottom surface of the first sealing film, or there is a gap of no more than 3 mm between the top surface of the second sealing film and the bottom surface of the first sealing film.

6. The packaging according to claim 5, characterized in that The middle cover includes a first middle cover portion and a second middle cover portion connected to each other, the first middle cover portion is used to connect to the upper cover, and the second middle cover portion is used to connect to the lower cover; the first middle cover portion has a cylindrical first inner cavity, and the second middle cover portion has a cylindrical second inner cavity, the diameter of the second inner cavity is larger than the diameter of the first inner cavity, and the middle cover forms a stepped surface at the intersection of the first inner cavity and the second inner cavity; A first inner plug ring is provided in the second inner cavity, and the first sealing film is used for sealing the bottom of the first inner plug ring in an assembled state.

7. The packaging according to claim 6, characterized in that An elastic pressure relief valve is provided between the cavity wall of the bottle cap corresponding to the second inner cavity and the bottle body, so that when the gas in the bottle body opens the elastic pressure relief valve, a pressure relief channel communicating with the bottle body and the outside is formed.

8. The packaging according to claim 6, characterized in that An elastic pressure relief valve is provided between the cavity wall of the bottle cap corresponding to the second inner cavity and the outer wall of the lower cover, so that when the gas in the bottle body opens the elastic pressure relief valve, a pressure relief channel communicating between the bottle body and the outside is formed.

9. The packaging according to claim 5, characterized in that The second inner plug ring is provided with an inner wall boss protruding inward in the radial direction near the bottom, and a sealing mounting ring is formed between the lower surface of the inner wall boss and the inner wall of the second inner plug ring located below the inner wall boss, and the second sealing membrane is sealed and connected to the sealing mounting ring.

10. The package according to claim 5, characterized in that The second inner plug ring is provided with an outer wall boss protruding outward in the radial direction near the bottom. The outer wall boss is located in the annular mounting cavity and is used to abut against and seal the inner surface of the bottle mouth.

11. A fermentation bacteria powder for the self-fermented yogurt according to claim 1, characterized in that: The fermentation bacteria powder includes Streptococcus thermophilus.

12. The fermentation bacteria powder according to claim 11, characterized in that The fermentation bacteria powder includes at least one of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi; Among them, the biological deposit number of YSC1001 is CGMCC No.28251, the biological deposit number of YSC1002 is CGMCC No.28252, and the biological deposit number of YSC1003 is CGMCC No.28253.

13. The fermentation bacteria powder according to claim 12, characterized in that The fermentation bacteria powder is composed of YSC1001, YSC1002 and YSC1003 in a mass ratio of (0.5-1.5):(3-5):(0.5-1.5); Alternatively, the fermentation bacteria powder is composed of YSC1001, YSC1002, YSC1003 and RZ 4.50LOW AiBi in a mass ratio of (0.5-1.5):(0.5-1.5):(0.5-1.5):(0.5-1.5).

14. Use of the fermentation bacteria powder according to any one of claims 11 to 13 in the production of yogurt; Preferably, the fermentation bacteria powder is used for making self-fermented yogurt.

15. A method for producing self-fermented yogurt according to any one of claims 1 to 3, characterized in that: The following steps are involved: The bottle cap is screwed to connect the bottle cap with the bottle body, so that the fermentation bacteria powder and the auxiliary agent encapsulated in the bottle cap are in contact with the liquid milk encapsulated in the bottle body for fermentation.

16. The manufacturing method according to claim 15, characterized in that: Fermentation is carried out at room temperature for at least 24 hours, or at 36-38°C for 4-5 hours.

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