Isolated scenting method of jasmine tea

Abstract

The invention discloses an isolated scenting method of jasmine tea, and belongs to the technical field of preparation of scented tea. The method comprises the following steps: S1, tea base treatment: re-firing a tea base until the water content is 21-15%, and cooling to room temperature for later use; s2, jasmine flower treatment: picking jasmine flower buds which are not completely bloomed, and alternately performing fresh flower spreading cooling and heat dissipation and re-piling heating until the blooming rate of the flower buds reaches 60-75% for later use; s3, primary scenting: placing the tea bases in a tea base area of an isolation scenting device, and placing the jasmine flowers in a fresh flower area of the isolation scenting device; the scenting temperature is 32-36 DEG C, and the scenting time is 10-20 hours; s4, secondary scenting: the jasmine flowers in a fresh flower area of the isolation scenting device are replaced, the scenting temperature is 28-32 DEG C, and the scenting time is 6-9 h; s5, after scenting is completed, the tea leaves in the tea base area are dried till the water content is 5-7%, and the tea is prepared. In the scenting process, the tea leaves and the jasmine flowers are in a separated state, after scenting is completed, the tea leaves and the fresh flowers do not need to be separated, and the preparation efficiency of the scented tea is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of scented tea preparation, and particularly relates to a jasmine tea isolation scenting method. Background Art

[0002] Jasmine Tea is a kind of scented tea. It is made by utilizing the adsorption properties of the tea leaves to absorb the aroma released by the opening of jasmine flowers. It has a history of more than 1,000 years.

[0003] Scenting is a key step in the production of jasmine tea. The traditional scenting method is to mix tea leaves and jasmine flowers evenly in proportion, and use the adsorption of tea leaves to absorb the fragrance released by jasmine flowers. The resulting tea is scented tea. However, when preparing scented tea using the traditional method, tea leaves and fresh flowers are mixed together. After scenting is completed, jasmine flowers need to be separated from tea leaves. The operation is relatively cumbersome and the efficiency is too low to meet production needs. Summary of the invention

[0004] The invention provides a jasmine tea isolation scenting method to solve the above technical problems.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A method for preparing jasmine tea by isolation scenting comprises the following steps:

[0007] S1. Tea processing: re-cook the tea until the moisture content is 21-15%, cool to room temperature and set aside;

[0008] S2, jasmine flower processing: picking the jasmine flower buds that are not fully opened, and alternately spreading the flower buds to cool and dissipate heat and stacking them to increase temperature until the flower bud opening rate reaches 60-75%, and then standby;

[0009] S3, first scenting: placing the tea leaves in the tea leaves area of ​​the isolated scenting device, and placing the jasmine flowers in the flower area of ​​the isolated scenting device; the scenting temperature is 32-36°C, and the scenting time is 10-20h;

[0010] S4, second scenting: replace the jasmine flowers in the fresh flower area of ​​the isolation scenting device, the scenting temperature is 28-32℃, and the scenting time is 6-9h;

[0011] S5. After the scenting is completed, the tea leaves in the tea slab area are dried to a moisture content of 5-7%.

[0012] Furthermore, the weight ratio of the tea leaves used in the first scenting of step S3 to the jasmine flowers is 1:0.7-1.2; the weight ratio of the tea leaves used in the second scenting of step S4 to the jasmine flowers is 1:0.4-0.7.

[0013] Furthermore, the tea leaves area in step S3 is an annular structure, the flower area is an annular structure, and the flower area is located inside the tea leaves area.

[0014] Furthermore, the ring width of the tea leaves area is 8-15 cm, and the ring width of the fresh flower area is 6-13 cm.

[0015] Furthermore, the step S4 includes the following steps: third scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolated scenting device, with the amount of jasmine flowers being 70-90% of the weight of the tea leaves; the scenting temperature is 27-30° C., and the scenting time is 3-5 hours;

[0016] Furthermore, after the third step of scenting, the method further comprises the following steps: fourth scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolated scenting device, with the amount being 70-90% of the weight of the tea leaves; the scenting temperature is 26-28° C., and the scenting time is 1-2 hours.

[0017] Furthermore, the isolation scenting device also includes: a box body, which is arranged in the tea base area and the fresh flower area within the box body; a closing component, including: a fixing rod, which is arranged on the outer sides of the two ends of the fresh flower area; a shielding roll, which is arranged on the fixing rod, and the end of which can be extended or retracted relative to the fixing rod; a magnetic block, which is arranged at the end of the shielding roll; a magnetic body, which is arranged on the outer side of the fresh flower area; when in use, the end of the shielding roll is extended around the length direction of the fresh flower area to close it, and is attracted to the magnetic block to fix the end of the shielding roll.

[0018] Furthermore, the closure assembly further comprises: a guide rod, which surrounds the two ends of the outer side of the flower area, and the two sides of the shielding roll can slide along the guide rod.

[0019] Furthermore, the isolated scenting device also includes: a fragrance guide component, including: a suction device, arranged on the inner ring side of the tea base area; a fragrance guide tube, one end of which is connected to the suction device, and the other end extends into the interior of the tea base area; a fragrance guide box, which is arranged in the tea base area and one side is connected to the fragrance guide tube; holes are distributed on the fragrance guide box; a fragrance absorption tube is located outside the fresh flower area and is connected to one end of the fragrance guide tube that is not connected to the suction device.

[0020] Furthermore, the fragrance guide box is a structure that is larger in the middle and smaller at both ends, and the side surfaces of the fragrance guide box are not connected to the inner wall of the tea base area.

[0021] Furthermore, a plurality of guide assemblies are arranged at intervals on the inner circumference of the tea base area; and the fragrance guide boxes of each guide assembly are arranged at intervals and / or connected.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention uses an isolated scenting process to prepare jasmine tea. During the scenting process, tea leaves and jasmine flowers are in a separated state, which is different from the existing tea leaves and fresh flowers mixed scenting process; after the scenting is completed, there is no need to separate the mixed tea leaves and fresh flowers, which greatly improves the preparation efficiency of the scented tea.

[0024] 2. At the beginning of scenting, the sealing component can be used to seal the flower area by extending the shielding roll around, so that the temperature and humidity inside the flower area are relatively high, which is conducive to the opening of jasmine flowers. After a certain period of time, the flowers open and the fragrance is emitted. At this time, the shielding roll is rolled up by controlling the power off of the magnetic body, so that the jasmine fragrance can be diffused in all directions, which is conducive to the diffusion of the flower fragrance and the absorption of the flower fragrance by the tea leaves in the tea base area.

[0025] 3. Since the tea leaves in the tea base area have a certain thickness, during the scenting process, the tea leaves in the tea base area close to the fresh flower area are more likely to absorb fragrance, which may cause uneven fragrance absorption. By setting a guide component, the fragrance emitted by the jasmine flowers is drawn into the fragrance guide box through the fragrance guide tube through the suction device, and then diffused outward through the holes and contacted with the tea leaves. In this way, the contact efficiency between the fragrance and the tea leaves is increased, making the tea leaves absorb the fragrance more evenly.

[0026] 4. The aroma guide box is made of soft material. When the suction device is running, the sucked aroma enters the aroma guide box. Since the diameter of the hole is smaller than the diameter of the aroma guide tube, the aroma stored in the aroma guide box increases, which slowly stretches the aroma guide box to both sides, and the telescopic part also stretches accordingly, thereby expanding the contact area between the aroma guide box and the tea leaves, which also helps to diffuse the aroma and dissipate the heat inside the tea leaves.

[0027] The number of times the tea is scented can be selected according to actual needs to meet the demands of different consumer groups for the quality of scented tea. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of the structure of the isolation and smelling device.

[0030] Figure 2 for Figure 1 A local enlarged schematic diagram of point A.

[0031] Figure 3 This is a schematic diagram of the fragrance guide component structure.

[0032] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B.

[0033] Figure 5 This is a schematic diagram of the structure of the tea base area and the fresh flower area.

[0034] Figure 6 This is a schematic diagram of the chute structure.

[0035] Figure 7 This is a schematic diagram of another form of the fragrance guide component structure (each group is connected).

[0036] Figure numerals: 1-isolation scenting device, 2-box, 21-tea base area, 22-flower area, 23-support rod, 24-slide, 25-slide, 26-mounting plate, 3-closing component, 31-fixing rod, 32-shielding roll, 33-magnetic block, 34-magnetic body, 35-guide rod, 4-fragrance guide component, 41-suction device, 42-fragrance guide tube, 43-fragrance guide box, 44-hole, 45-fragrance absorption tube. DETAILED DESCRIPTION

[0037] To facilitate a better understanding of the present invention, the following examples are provided to illustrate the present invention in conjunction with the accompanying drawings. These examples belong to the protection scope of the present invention, but do not limit the protection scope of the present invention.

[0038] Example 1

[0039] A method for preparing jasmine tea by isolation scenting comprises the following steps:

[0040] S1. Tea processing: The tea leaves are re-fired until the moisture content is 21%, cooled to room temperature and set aside;

[0041] S2, jasmine flower processing: picking the jasmine flower buds that are not fully opened, and alternately spreading the flower buds to cool and dissipate heat and stacking them to increase temperature until the flower bud opening rate reaches 60%, and then standby;

[0042] S3, first scenting: placing tea leaves in the tea leaves area 21 of the isolated scenting device 1, and placing jasmine flowers in the flower area 22 of the isolated scenting device 1; the scenting temperature is 32° C., and the scenting time is 10 hours;

[0043] S4, second scenting: replace the jasmine flowers in the fresh flower area 22 of the isolation scenting device, the scenting temperature is 28°C, and the scenting time is 6h;

[0044] S5. After the scenting is completed, the tea leaves in the tea base area 21 are dried to a moisture content of 5%.

[0045] The weight ratio of the tea leaves used in the first scenting of step S3 to the jasmine flowers is 1:0.7; the weight ratio of the tea leaves used in the second scenting of step S4 to the jasmine flowers is 1:0.4.

[0046] The tea leaves area 21 in step S3 is an annular structure, and the flower area 22 is an annular structure, and the flower area is located inside the tea leaves area.

[0047] The ring width of the tea base area is 8 cm, and the ring width of the fresh flower area 22 is 6 cm; the gap distance between the tea base and the jasmine fresh flower is 1.5 cm.

[0048] Step S4 is followed by the following steps: third scenting: replacing the jasmine flowers in the fresh flower area 22 of the isolated scenting device 1, with the amount being 70% of the weight of the tea leaves; the scenting temperature is 27° C., and the scenting time is 3 hours;

[0049] After step three scenting, the following steps are also included: step four scenting: replacing the jasmine flowers in the flower area 22 of the isolation scenting device 1, with the amount being 70% of the weight of the tea leaves; the scenting temperature is 26° C., and the scenting time is 1 hour.

[0050] like Figure 1-Figure 2 , Figure 5 As shown, the isolation scenting device 1 also includes: a box body 1, which is arranged in the tea base area 21 and the flower area 22 in the box body 1; a closing component 2, which includes: a fixing rod 31, which is arranged on the outer side of both ends of the flower area 22; a shielding roll 32, which is arranged on the fixing rod 31, and the end can be extended or retracted relative to the fixing rod 31; a magnetic block 33, which is arranged at the end of the shielding roll 32; a magnetic body 34, which is arranged on the outer side of the flower area 22; when in use, the end of the shielding roll 32 surrounds and extends out of the length direction of the closed flower area 22, and is attracted to the magnetic block 33 to fix the end of the shielding roll 32

[0051] like Figure 1-Figure 2 As shown, the closing assembly 2 further includes: a guide rod 35 which surrounds the two ends of the outer side of the flower area 22 , and the two sides of the shielding roll 32 can slide along the guide rod 35 .

[0052] like Figure 1 , Figure 3-Figure 4 As shown in Figures 5 and 6, the isolation scenting device 1 further includes: a fragrance guiding assembly 4, including: a suction device 41, which is arranged on the inner ring side of the tea base area 21; a fragrance guiding tube 42, one end of which is connected to the suction device 41, and the other end extends into the interior of the tea base area 21; a fragrance guiding box 43, which is arranged in the tea base area 21 and one side of which is connected to the fragrance guiding tube 42; holes 44 are distributed on the fragrance guiding box 43; a fragrance absorbing tube 45, which is located outside the fresh flower area 22 and is connected to one end of the fragrance guiding tube not connected to the suction device 41.

[0053] like Figure 3 As shown, the aroma guide box 43 is a structure that is large in the middle and small at both ends, and the side surface of the aroma guide box 43 is not connected to the inner wall of the tea base area 21.

[0054] like Figure 1 -、 Figure 7As shown, a plurality of guide assemblies 4 are provided at intervals on the inner circumference of the tea base area 21; the fragrance guide boxes 43 of each guide assembly 4 are provided at intervals and / or connected; Figure 7 It is a schematic diagram of the structure in which the fragrance guide boxes of adjacent guide components are connected, and the interiors of the fragrance guide boxes are connected.

[0055] A box door is provided on the side of the box body, a feeding port is provided on the top, and a charging port is provided at the position of the feeding port corresponding to the tea base area; when tea leaves need to be added to the tea base area, tea leaves can be added to the charging port through the feeding port, and after completion, the charging port and the feeding port are closed in turn; during the scenting process, the box door, the feeding port and the charging port are all in a closed state.

[0056] The fresh flower area can be in a circular shape and can be made of a mesh material with mesh holes distributed in the length direction to facilitate the diffusion of the jasmine fragrance into the tea base area; the mesh hole diameter should be smaller than the size of the jasmine flowers to prevent the jasmine flowers from falling out of the fresh flower area; a flower adding port is provided at the end of the fresh flower area, and when fresh flowers need to be added or poured out, the flower adding port can be opened to pour out the fresh flowers.

[0057] like Figure 1 As shown, the isolation scenting device can be provided with a support rod 23, the end of the support rod 23 is fixed on the inner side of the box body 1, and the support rod 23 contacts the inner ring side wall of the flower area 22, which is used to support the flower area 22; the flower area 22 is not fixed in the box body 1, and during scenting, the flower area 22 containing jasmine flowers can be pushed into the box body 1 along the support rod 23; after the scenting is completed, the box door can be opened to pull the flower area 22 outward, and if multiple scenting is required, the flower area 22 with fresh flowers can be replaced again.

[0058] The tea blank area can be in a circular shape and made of a mesh material with mesh holes distributed in the length direction to facilitate the entry of the jasmine fragrance so that the tea leaves can absorb the fragrance; the mesh hole diameter should be smaller than the size of the jasmine flower to prevent the tea leaves from falling out of the tea blank area.

[0059] Elastic parts, such as elastic ropes, are arranged on both sides of the shielding roll; when the shielding roll is extended, the elastic rope is stretched; after the shielding is completed, the magnetic block is separated from the magnetic body, and the shielding roll retracts due to the elastic force of the elastic rope.

[0060] like Figure 1-Figure 2As shown, mounting plates 26 can be provided at both ends of the flower area 22 for installing fixing rods 31. Two fixing rods 31 are provided, which can rotate relative to the mounting plates 26 and are respectively provided at both ends of the flower area 22, so that the shielding roll 32 can be clamped and fixed, and the shielding roll can be rolled up with the fixing rod as the axis; a torsion spring can be installed at the mounting position of the mounting plate and the fixing rod, so that when the magnetic body is separated from the magnetic block, the torsion spring can restore the deformation and roll up the shielding roll; the magnetic block used can be steel-like metal, and the magnetic body can be a magnet, which is preferably Select an electromagnet; when flowers are loaded into the flower area, the flower area is loaded into the box body, and then the end of the shielding roll is pulled up to rotate around the tea base area and block and seal it. After a circle, the magnetic body is energized, and then the magnetic block at the end of the shielding roll is attracted to the magnetic object; the shielding time of the shielding roll is 25-50 minutes, which can be adjusted according to actual conditions; after the shielding is completed, the power supply of the magnetic body is turned off, and due to the action of the elastic member, the shielding roll is automatically retracted to the fixed rod; the magnetic body can also be arranged on the mounting plate.

[0061] The guide rods are arranged on the outer sides of the two ends of the flower area, and the two sides of the shielding roll are movably arranged on the guide rods (for example, with rope loops) so that the shielding roll can slide along the guide rods; when in use, the guide rods can play a role in guiding the direction, so that the shielding roll can be extended or retracted along the guide rods.

[0062] The suction device can be a fan, which is used to draw the aroma released by jasmine flowers into the tea leaves; it can be existing equipment, and the model is not repeated; the suction device is fixed to the side of the inner ring of the tea base area, and at the same time, the suction device is kept at a suitable distance from the outside of the fresh flower area to avoid affecting the replacement operation of the fresh flower area.

[0063] The aroma guide box is made of a light and thin material, such as food-grade plastic, with holes distributed on it for distributing the aroma drawn into the aroma guide box, so that the tea leaves can absorb the aroma; there are fold marks at both ends of the aroma guide box, so that the aroma guide box can be expanded or contracted along the fold marks when an external force acts; the aroma guide box is inside the tea base area, and there is a gap between the two sides and the inner wall of the tea base area; when tea leaves are loaded, the aroma guide box will be surrounded by tea leaves on all sides due to the accumulation of tea leaves; due to the characteristics of the material of the aroma guide box, it will be squeezed by the tea leaves to a relatively small size; when the suction device is started, the aroma passes through the aroma guide tube When the tea leaves enter the aroma guide box and the amount of aroma emitted from the holes is less than the amount of air intake, the aroma guide box will slowly expand, which not only expands the contact area between the tea leaves and the aroma, but also makes the tea leaves spread out to dissipate heat. In addition, during use, the air intake of the aroma guide tube can be adjusted according to actual conditions, thereby controlling the degree of expansion of the aroma guide box, so as to maintain the temperature or dissipate heat while introducing the aroma. The two sides of the tea blank area are made of soft materials, so that when the aroma guide box is expanded, the supported tea leaves can push the side walls of the tea blank area to expand, thereby avoiding the use of hard materials that may cause the tea leaves to be squeezed and broken.

[0064] Slide blocks 24 are installed on the side walls of the tea-base area, and slide grooves 25 are arranged on the inner walls of the box body 1 corresponding to the slide blocks 24. The slide grooves 25 are arranged obliquely downward near one end of the box door, so that the slide grooves 25 are curved, which is convenient for the slide blocks 24 to slide obliquely in the slide grooves 25. After the scenting is completed, the box door is opened, and the tea-base area 21 is pulled outward. At this time, the slide blocks 23 are forced to slide in the slide grooves 25 and gradually tilt downward, so that the tea-base area 21 is in an inclined state, and then the door on the side of the tea-base area 21 is opened to tilt the tea leaves inside. During the scenting process, in order to prevent the slide block from sliding in the slide groove and affecting normal operation, the slide block can be limited by existing means such as latches. After the scenting is completed, the limit on the slide block is released when it is necessary to slide the slide block.

[0065] Usage: first put jasmine flowers into the fresh flower area, close the flower adding port, and then put the fresh flower area into the box along the support rod; open the feeding port and the feeding port of the box, and put tea leaves into the tea base area. After completion, close the feeding port and the feeding port; pull the end of the shielding roll along the guide rod around the fresh flower area to cover and close the fresh flower area, thereby closing the fresh flower area, so that the magnetic block and the magnetic body are attracted, and then close the box door of the box; adjust the temperature and humidity of the box to a suitable level, and after the shielding roll is closed for a period of time, disconnect the power supply of the magnetic body to make it lose its magnetism, thereby separating the magnetic block from the magnetic body, and the shielding roll retracts to its original position; at this time, the jasmine flowers in the fresh flower area gradually open, and the fragrance emitted spreads outward and is absorbed by the tea leaves in the tea base area.

[0066] Since the tea leaves in the tea base area have a certain thickness, a fragrance guide component is provided to allow the tea leaves in the middle part to fully absorb the fragrance; through the operation of the suction device, the fragrance emitted by the jasmine flowers in the fresh flower area is absorbed by the fragrance absorption tube and enters the fragrance guide box, and then dispersed through the holes on the fragrance guide box; since the fragrance guide box is inside the tea base area, the sides are covered with tea leaves, so the emitted fragrance can be absorbed by the tea leaves, which helps the tea leaves to absorb the fragrance evenly during the scenting process; according to the number of scenting times, after the scenting time is up, open the box door, take out the used fresh flower area, and put in new ones to continue the scenting; after the scenting is completed, the tea leaves in the tea base area are dried to a suitable moisture content.

[0067] Example 2

[0068] A method for preparing jasmine tea by isolation scenting comprises the following steps:

[0069] S1. Tea processing: The tea leaves are re-fired until the moisture content is 13%, cooled to room temperature and set aside;

[0070] S2, jasmine flower processing: picking the jasmine flower buds that are not fully opened, alternately spreading the flowers to cool and dissipate heat and stacking them to increase temperature until the flower bud opening rate reaches 65%, and then standby;

[0071] S3, first scenting: placing the tea leaves in the tea leaves area of ​​the isolated scenting device, and placing the jasmine flowers in the flower area of ​​the isolated scenting device; the scenting temperature is 34° C., and the scenting time is 15 hours;

[0072] S4, second scenting: replace the jasmine flowers in the fresh flower area of ​​the isolation scenting device, the scenting temperature is 30°C, and the scenting time is 6-9h;

[0073] S5. After the scenting is completed, the tea leaves in the tea base area are dried to a moisture content of 6%.

[0074] The weight ratio of the tea leaves used in the first scenting of step S3 to the jasmine flowers is 1:1.0; the weight ratio of the tea leaves used in the second scenting of step S4 to the jasmine flowers is 1:0.6.

[0075] In step S3, the tea leaves area is an annular structure, the fresh flower area is an annular structure, and the fresh flower area is inside the tea leaves area.

[0076] The ring width of the tea base area is 10cm, and the ring width of the fresh flower area is 8cm.

[0077] Step S4 is followed by the following steps: third scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolated scenting device, with the amount being 80% of the weight of the tea leaves; the scenting temperature is 28° C., and the scenting time is 4 hours;

[0078] After step three scenting, the following steps are also included: step four scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolation scenting device, with an amount of 80% of the weight of the tea leaves; the scenting temperature is 27° C., and the scenting time is 1.5 hours.

[0079] Example 3

[0080] A method for preparing jasmine tea by isolation scenting comprises the following steps:

[0081] S1. Tea processing: re-heat the tea to a moisture content of 15%, cool to room temperature, and set aside;

[0082] S2, jasmine flower processing: picking the jasmine flower buds that are not fully opened, alternately spreading the flowers to cool and dissipate heat and stacking them to increase temperature until the flower bud opening rate reaches 70%, and then standby;

[0083] S3, first scenting: placing the tea leaves in the tea leaves area of ​​the isolated scenting device, and placing the jasmine flowers in the flower area of ​​the isolated scenting device; the scenting temperature is 36°C, and the scenting time is 20 hours;

[0084] S4, second scenting: replace the jasmine flowers in the fresh flower area of ​​the isolation scenting device, the scenting temperature is 32°C, and the scenting time is 9 hours;

[0085] S5. After the scenting is completed, the tea leaves in the tea base area are dried to a moisture content of 7%.

[0086] The weight ratio of the tea leaves used in the first scenting of step S3 to the jasmine flowers is 1:1.2; the weight ratio of the tea leaves used in the second scenting of step S4 to the jasmine flowers is 1:0.7.

[0087] In step S3, the tea leaves area is an annular structure, the fresh flower area is an annular structure, and the fresh flower area is inside the tea leaves area.

[0088] The ring width of the tea base area is 15cm, and the ring width of the fresh flower area is 13cm.

[0089] Step S4 is followed by the following steps: third scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolated scenting device, with the amount being 90% of the weight of the tea leaves; the scenting temperature is 30° C., and the scenting time is 5 hours;

[0090] After step three scenting, the following steps are also included: step four scenting: replacing the jasmine flowers in the fresh flower area of ​​the isolation scenting device, with the amount being 90% of the weight of the tea leaves; the scenting temperature is 28° C., and the scenting time is 2 hours.

[0091] The magnetic body, suction device, etc. used in the present invention are not the innovation points of this application, and the specific models will not be repeated here; the tea base area, flower area, shielding roll, fragrance guide box, etc. are all made of existing materials, and the materials used are not the innovation points of this application.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the statement "including an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing jasmine tea by isolation scenting, characterized in that: The following steps are involved: S1. Tea processing: The tea leaves are re-fired until the moisture content is 21-15%, cooled to room temperature and set aside; S2, jasmine flower processing: picking the jasmine flower buds that are not fully opened, and alternately spreading the flower buds to cool and dissipate heat and stacking them to increase temperature, until the flower bud opening rate reaches 60-75%, and then standby; S3, first scenting: placing tea leaves in the tea leaves area (21) of the isolated scenting device (1), and placing jasmine flowers in the flower area (22) of the isolated scenting device (1); the scenting temperature is 32-36° C., and the scenting time is 10-20 hours; S4, second scenting: replace the jasmine flowers in the isolation scenting device (1) in the fresh flower area, the scenting temperature is 28-32°C, and the scenting time is 6-9h; S5. After the scenting is completed, the tea leaves in the tea slab area are dried to a moisture content of 5-7%.

2. A jasmine tea isolation scenting method according to claim 1, characterized in that: The weight ratio of the tea leaves used in the first scenting of step S3 to the jasmine flowers is 1:0.7-1.2; the weight ratio of the tea leaves used in the second scenting of step S4 to the jasmine flowers is 1:0.4-0.

7.

3. A jasmine tea isolation scenting method according to claim 2, characterized in that: The tea leaves area (21) in step S3 is an annular structure, the flower area (22) is an annular structure, and the flower area (22) is located inside the tea leaves area (21).

4. A jasmine tea isolation scenting method according to claim 3, characterized in that: The ring width of the tea base area is 8-15 cm, and the ring width of the fresh flower area is 6-13 cm.

5. A jasmine tea isolation scenting method according to claim 4, characterized in that: The step S4 includes the following steps: Third scenting: replace the jasmine flowers in the fresh flower area (22) of the isolated scenting device (1) with 70-90% of the weight of the tea leaves; the scenting temperature is 27-30°C and the scenting time is 3-5 hours.

6. A method for preparing jasmine tea by isolation scenting according to any one of claims 1 to 5, characterized in that: The isolation and smelling device (1) further comprises: A box body (2), the tea leaves area (21) and the fresh flower area (22) arranged in the box body (2); A closure assembly (3) comprising: Fixed rods (31) are arranged on the outer sides of both ends of the flower area (22); A shielding roll-up member (32) is disposed on the fixing rod (31), and an end portion thereof can be extended or rolled up relative to the fixing rod (31); A magnetic block (33) is arranged at the end of the shielding roll (32); The magnetic body (34) is arranged on the outer side of the flower area (22); when in use, the end of the shielding roll (32) extends outwardly to close the length direction of the flower area (22) and attracts the magnetic block (33) to fix the end of the shielding roll (32).

7. A method for preparing jasmine tea by isolation scenting according to claim 6, characterized in that: The closure assembly (2) further comprises: The guide rod (35) surrounds the two ends of the outer side of the flower area (22), and the two sides of the shielding roll (32) can slide along the guide rod (35).

8. A method for preparing jasmine tea by isolation scenting according to any one of claims 1 to 7, characterized in that: The isolation and smelling device (1) further comprises: The aroma guide component (4) comprises: A suction device (41) is arranged on the inner ring side of the tea base area (21); A fragrance guide tube (42), one end of which is connected to the suction device (41) and the other end of which extends into the interior of the tea base area (21); A fragrance guide box (43) is arranged in the tea base area (21), and one side of the box is connected to the fragrance guide tube (42); The fragrance guide box (43) is provided with holes (44) distributed thereon; The fragrance absorption tube (45) is located outside the flower area (22) and is connected to one end of the suction device (41) that is not connected to the fragrance guide tube (42).

9. The method for preparing jasmine tea by isolation scenting according to claim 8, characterized in that: The fragrance guide box (43) is a structure that is larger in the middle and smaller at both ends, and the side surface of the fragrance guide box (43) is not connected to the inner wall of the tea base area (21).

10. The method for preparing jasmine tea by isolation scenting according to claim 9, characterized in that: A plurality of guide components (4) are arranged at intervals along the inner circumference of the tea base area (21); The fragrance guide boxes (43) of each of the guide assemblies (4) are arranged at intervals and / or connected.

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