Preparation method of tobacco extract and preparation method of atomized liquid

Abstract

The invention belongs to the technical field of atomized liquid preparation, and relates to a tobacco extract preparation method, which comprises: providing a tobacco raw material and an ethanol solvent according to a set mass ratio, mixing the tobacco raw material and the ethanol solvent, and carrying out ultrasonic treatment to obtain a mixed alcohol solvent, the mass fraction of the ethanol solvent being 90-99%; the mixed alcohol solvent is subjected to standing treatment, and supernate is extracted; and carrying out solvent removal treatment on the supernate to obtain the tobacco extract. The invention further relates to a preparation method of the atomized liquid. According to the technical scheme provided by the invention, the quality of the tobacco extract can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of atomized liquid preparation, and more specifically, to a method for preparing a tobacco extract and a method for preparing an atomized liquid. Background Art

[0002] Tobacco extract is one of the main raw materials for atomizing liquid. Common extraction methods include solvent extraction, steam distillation, distillation extraction, supercritical CO2 extraction, molecular distillation, microwave-assisted extraction, etc. Currently, supercritical CO2 is usually used to extract tobacco raw materials to prepare tobacco extract.

[0003] Tobacco wax is one of the important components of tobacco raw materials. It is concentrated on the surface of tobacco leaves and acts as a surface barrier for plant leaves, which can reduce the damage of ultraviolet rays to plants and prevent the loss of free water. However, when tobacco raw materials are used to prepare atomized liquid, tobacco wax will have a negative impact on the atomized liquid, resulting in a decrease in the taste of the atomized liquid and causing carbon deposits or even core sticking in electronic atomization equipment.

[0004] Since supercritical CO2 extraction technology is not selective for weakly polar components, the prepared tobacco extract contains tobacco wax, which affects the service life of the electronic atomization device and affects the user experience. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present application is that the tobacco extract prepared by the existing extraction method cannot remove tobacco wax, resulting in a decrease in the service life of the electronic atomization device and affecting the user experience.

[0006] In order to solve the above technical problems, the present application provides a method for preparing a tobacco extract, which adopts the following technical solution:

[0007] A method for preparing a tobacco extract comprises the following steps:

[0008] Providing tobacco raw material and ethanol solvent, mixing the tobacco raw material and the ethanol solvent according to a set mass ratio, and performing ultrasonic treatment to obtain a mixed alcohol solvent, wherein the mass fraction of the ethanol solvent is 90% to 99%;

[0009] Allowing the mixed alcohol solvent to stand for a period of time to extract a supernatant;

[0010] The supernatant is subjected to a solvent removal treatment to obtain the tobacco extract.

[0011] Further, the set mass ratio is 1:(1-9); and / or,

[0012] The duration of the ultrasonic treatment is 30 min to 60 min; and / or,

[0013] The treatment temperature of the ultrasonic treatment is 40°C to 60°C; and / or,

[0014] The ultrasonic frequency of the ultrasonic treatment is 30kHz to 50kHz.

[0015] Furthermore, the tobacco raw material is selected from one or more of Yunyan tobacco pure oil, sun-cured tobacco pure oil, Henan tobacco extract, flue-cured tobacco extract, Virginia tobacco extract, and Zimbabwe tobacco extract.

[0016] Furthermore, the treatment temperature of the static treatment is 0°C to 4°C; and / or,

[0017] The duration of the static treatment is 12 hours to 24 hours.

[0018] Furthermore, the step of extracting the supernatant comprises the following steps:

[0019] placing the mixed alcohol solvent after static treatment in a high-speed centrifuge;

[0020] The mixed alcohol solvent is centrifuged to obtain the supernatant.

[0021] Furthermore, the rotation speed of the centrifugal treatment is 6000r / min to 8000r / min; and / or,

[0022] The duration of the centrifugal treatment is 30 min to 60 min.

[0023] Furthermore, the step of removing the solvent from the supernatant comprises the following steps:

[0024] placing the supernatant in a rotary evaporator;

[0025] The supernatant is subjected to evaporation and concentration treatment to obtain the tobacco extract.

[0026] Furthermore, the heating temperature of the evaporation concentration treatment is 40°C to 50°C.

[0027] In order to solve the above technical problems, the present application also provides a method for preparing an atomized liquid, which adopts the following technical solution:

[0028] A method for preparing an atomized liquid comprises the following steps:

[0029] Providing a tobacco extract, wherein the tobacco extract is prepared by the above-mentioned method for preparing the tobacco extract;

[0030] The tobacco extract is mixed with a polyol solvent to obtain the atomized liquid.

[0031] Furthermore, in the atomized liquid, the mass proportion of the tobacco extract is 2% to 5%; and / or,

[0032] The polyol solvent is selected from one or more of glycerol, ethylene glycol, propylene glycol, butylene glycol, and diethylene glycol.

[0033] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0034] The preparation method of the tobacco extract provided in the present application improves the quality of the tobacco extract by adding a high concentration of ethanol solvent and assisting with ultrasonic treatment to remove waxy components, thereby eliminating residual oily substances in the tobacco extract; at the same time, by further processing to remove impurities and solvents in the tobacco extract, the tobacco extract is purified, thereby further improving the quality of the tobacco extract. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 is a flowchart of the preparation method of the tobacco extract of the embodiment of the present application;

[0037] Figure 2 It is a workflow diagram of the method for preparing the atomized liquid according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] See also Figure 1 The present invention provides a method for preparing a tobacco extract, which specifically comprises the following steps:

[0041] Step S101, providing tobacco raw material and ethanol solvent, mixing the tobacco raw material and the ethanol solvent according to a set mass ratio, and performing ultrasonic treatment to obtain a mixed alcohol solvent.

[0042] In some embodiments, the mass fraction of the ethanol solvent is 90% to 99%. Preferably, the mass fraction of the ethanol solvent is 95% to 99%. In this embodiment, the mass fraction of the ethanol solvent is 95%.

[0043] Step S102, allowing the mixed alcohol solvent to stand for a while to extract the supernatant.

[0044] Step S103, performing a solvent removal treatment on the supernatant to obtain the tobacco extract.

[0045] The preparation method of the tobacco extract provided in the embodiment of the present application improves the quality of the tobacco extract by adding a high concentration of ethanol solvent and assisting with ultrasonic treatment to remove waxy components, thereby eliminating residual oily substances in the tobacco extract; at the same time, by further processing to remove impurities and solvents in the tobacco extract, the tobacco extract is purified, thereby further improving the quality of the tobacco extract.

[0046] In some embodiments, the set mass ratio is 1:(1-9). Specifically, the mass ratio of the tobacco raw material to the ethanol solvent can be set to any value of 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9 or a range formed between any two values.

[0047] The embodiment of the present application prepares the mixed alcohol solvent according to the above-set mass ratio, and can use the high-concentration ethanol solvent to fully dissolve the tobacco wax in the tobacco extract, thereby improving the quality of the tobacco extract.

[0048] In some embodiments, the tobacco raw material is selected from one or more of Yunyan tobacco pure oil, sun-cured tobacco pure oil, Henan tobacco extract, flue-cured tobacco extract, Virginia tobacco extract, and Zimbabwe tobacco extract.

[0049] In some embodiments, in step S101, after the tobacco raw material and the ethanol solvent are mixed to form a mixed alcohol solvent, the mixed alcohol solvent is placed in an ultrasonic instrument for further ultrasonic treatment, thereby promoting sufficient dissolution between the tobacco raw material and the ethanol solvent.

[0050] In some embodiments, the duration of the ultrasonic treatment is 30 min to 60 min. Specifically, the duration of the ultrasonic treatment can be set to any one of 30 min, 40 min, 50 min, and 60 min or a range formed between any two values.

[0051] In some embodiments, the treatment temperature of the ultrasonic treatment is 40°C to 60°C. Specifically, the treatment temperature of the ultrasonic treatment can be set to any one of 40°C, 50°C, and 60°C or a range formed between any two values.

[0052] In some embodiments, the ultrasonic frequency of the ultrasonic treatment is 30 kHz to 50 kHz. Specifically, the ultrasonic frequency of the ultrasonic treatment can be set to any one of 30 kHz, 40 kHz, and 50 kHz or a range formed between any two values.

[0053] In some embodiments, the static treatment in step S102 is a low-temperature static treatment.

[0054] In some embodiments, the processing temperature of the static treatment is 0°C to 4°C. Specifically, the processing temperature of the static treatment can be set to any one of 0°C, 1°C, 2°C, 3°C, 4°C or a range formed between any two values.

[0055] In some embodiments, the duration of the static treatment is 12 hours to 24 hours. Specifically, the duration of the static treatment can be set to any one of 12 hours, 18 hours, and 24 hours, or a range formed between any two values.

[0056] In the embodiment of the present application, a large amount of insoluble matter can be precipitated and settled to the bottom through the low-temperature standing treatment in step S102, thereby purifying the tobacco extract and improving the quality of the tobacco extract.

[0057] In some embodiments, after the low-temperature standing treatment in step S102, the mixed alcohol solvent will produce suspended matter and insoluble matter, and the purity of the supernatant is low, and the supernatant needs to be purified. The step of extracting the supernatant includes the following steps:

[0058] placing the mixed alcohol solvent after static treatment in a high-speed centrifuge;

[0059] The mixed alcohol solvent is centrifuged to obtain the supernatant.

[0060] The embodiment of the present application adopts a centrifugal treatment method to achieve rapid separation of insoluble matter from the supernatant, thereby improving the purity of the supernatant.

[0061] In some embodiments, the rotation speed of the centrifugal treatment is 6000 r / min to 8000 r / min. Specifically, the rotation speed of the centrifugal treatment can be set to any one of 6000 r / min, 7000 r / min, 8000 r / min or a range formed between any two values.

[0062] The duration of the centrifugal treatment is 30 min to 60 min. Specifically, the duration of the centrifugal treatment can be set to any one of 30 min, 40 min, 50 min, and 60 min, or a range formed between any two values.

[0063] In other embodiments, the supernatant may be extracted by filtration or sedimentation. However, by comparison, centrifugation can achieve rapid and high-quality extraction of the supernatant.

[0064] In some embodiments, the step S103, the step of removing the solvent from the supernatant, comprises the following steps:

[0065] placing the supernatant in the rotary evaporator;

[0066] The supernatant is subjected to evaporation and concentration treatment to obtain the tobacco extract.

[0067] In some embodiments, the heating temperature of the evaporation concentration process is 40°C to 50°C. Specifically, the heating temperature of the evaporation concentration process can be set to any one of 40°C, 45°C, and 50°C or a range formed between any two values.

[0068] The embodiment of the present application can remove excess ethanol solvent by desolventizing the supernatant, thereby avoiding affecting the user's taste during the use of the tobacco extract to prepare the atomized liquid. Due to the presence of high concentration of ethanol solvent, the electronic atomizing device may spontaneously combust during the process of heating the atomizing liquid by the electronic atomizing device. Therefore, the embodiment of the present application can reduce the risk of using the electronic atomizing device and improve the reliability of using the electronic atomizing device by desolventizing.

[0069] Based on the preparation method of the tobacco extract as described above, the embodiment of the present application also provides a preparation method of an atomized liquid.

[0070] See also Figure 2 As shown, in some embodiments, a method for preparing an atomized liquid comprises the following steps:

[0071] Step S201, providing tobacco extract.

[0072] In some embodiments, the tobacco extract is prepared using the tobacco extract preparation method described above.

[0073] Step S202, mixing the tobacco extract with a polyol solvent to obtain the atomized liquid.

[0074] The embodiment of the present application uses the tobacco extract prepared by the preparation method of the tobacco extract as described above as a raw material to prepare the atomized liquid, which can improve the quality and taste of the atomized liquid and remove the oily floccules generated when the atomized liquid is heated and atomized, thereby avoiding the problem of carbon deposits or even core sticking on the atomizer core during the use of the atomized liquid, thereby improving the user's smoking experience.

[0075] In some embodiments, the mass proportion of the tobacco extract in the atomized liquid is 2% to 5%. Preferably, the mass proportion of the tobacco extract is 2% to 3%. Specifically, the mass proportion of the tobacco extract in the atomized liquid can be set to any one of 2%, 3%, 4%, 5% or a range formed between any two values.

[0076] The embodiment of the present application controls the proportion of tobacco extract in the atomized liquid, thereby controlling the taste of the atomized liquid and improving the user experience.

[0077] In some embodiments, the polyol solvent is selected from one or more of glycerol, ethylene glycol, propylene glycol, butylene glycol, and diethylene glycol.

[0078] The present application is described in detail below through specific embodiments. The following embodiments are only partial embodiments of the present application and are not limitations of the present application.

[0079] Example 1

[0080] Step (1), providing 100 g of Yunyan absolute oil and 100 g of ethanol solvent with a mass fraction of 95%, mixing the Yunyan absolute oil and the ethanol solvent in a reaction bottle, placing in an ultrasonic instrument, and ultrasonically treating for 30 minutes at 50° C. to obtain a mixed alcohol solvent;

[0081] Step (2), placing the mixed alcohol solvent in a refrigerator at 0°C and leaving it to stand for 24 hours.

[0082] Step (3), placing the mixed alcohol solvent after the static treatment in a high-speed centrifuge, centrifuging for 30 minutes, and taking the supernatant, wherein the speed of the high-speed centrifuge is set to 6000 r / min;

[0083] Step (4), placing the supernatant in the rotary evaporator, evaporating and concentrating at 40° C. until there is no solvent, to obtain the tobacco extract;

[0084] Step (5), mixing the tobacco extract with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the tobacco extract in the atomized liquid is 2%.

[0085] Example 2

[0086] The difference between this embodiment and embodiment 1 is that in step (1), 100 g of sun-cured tobacco absolute oil and 100 g of ethanol solvent with a mass fraction of 95% are provided.

[0087] Example 3

[0088] The difference between this embodiment and embodiment 1 is that in step (1), 100 g of Yuyan extract and 400 g of ethanol solvent with a mass fraction of 95% are provided.

[0089] Example 4

[0090] The difference between this embodiment and embodiment 1 is that in step (1), 100 g of flue-cured tobacco extract and 400 g of ethanol solvent with a mass fraction of 95% are provided.

[0091] Example 5

[0092] The difference between this embodiment and embodiment 1 is that in step (1), 50 g of Virginia tobacco extract and 450 g of ethanol solvent with a mass fraction of 95% are provided.

[0093] Example 6

[0094] The difference between this embodiment and embodiment 1 is that in step (1), 50 g of Zimbabwe tobacco extract and 450 g of ethanol solvent with a mass fraction of 95% are provided.

[0095] Comparative Example 1

[0096] The Yunyan absolute oil is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the Yunyan absolute oil in the atomized liquid is 2%.

[0097] Comparative Example 2

[0098] The sun-cured tobacco absolute oil is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the cloud tobacco absolute oil in the atomized liquid is 2%.

[0099] Comparative Example 3

[0100] The Yuyan extract is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the Yunyan absolute oil in the atomized liquid is 2%.

[0101] Comparative Example 4

[0102] The flue-cured tobacco extract is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the Yunyan absolute oil in the atomized liquid is 2%.

[0103] Comparative Example 5

[0104] The Virginia tobacco extract is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the Yunyan pure oil in the atomized liquid is 2%.

[0105] Comparative Example 6

[0106] The Zimbabwe tobacco extract is mixed with a polyol solvent to obtain the atomized liquid, wherein the polyol solvent is a mixture of propylene glycol and glycerol in a mass ratio of 1:1, and the mass proportion of the Yunyan absolute oil in the atomized liquid is 2%.

[0107] The atomized liquids prepared in the above Examples 1 to 6 and Comparative Examples 1 to 6 were injected into the atomization core of the electronic atomization device for a machine extraction test. The test results are shown in Table 1 below:

[0108]

[0109]

[0110] Table 1

[0111] According to the records in Table 1, the atomized liquids provided in Examples 1 to 6 have a much greater number of puffs in the machine-drawn core burn test than the atomized liquids provided in Comparative Examples 1 to 6, and are less likely to cause the atomized core to burn out.

[0112] In summary, the preparation method of tobacco extract and the preparation method of atomized liquid provided in the embodiments of the present application can improve the quality and taste of the atomized liquid, and remove the oily floccules generated when the atomized liquid is heated and atomized, thereby avoiding the problem of carbon deposits or even core sticking on the atomizer core during the use of the atomized liquid, thereby improving the user's smoking experience.

[0113] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A method for preparing a tobacco extract, characterized in that: The following steps are involved: Providing tobacco raw material and ethanol solvent, mixing the tobacco raw material and the ethanol solvent according to a set mass ratio, and performing ultrasonic treatment to obtain a mixed alcohol solvent, wherein the mass fraction of the ethanol solvent is 90% to 99%; Allowing the mixed alcohol solvent to stand for a period of time to extract a supernatant; The supernatant is subjected to a solvent removal treatment to obtain the tobacco extract.

2. The method for preparing the tobacco extract according to claim 1, characterized in that: The set mass ratio is 1:(1-9); and / or, The duration of the ultrasonic treatment is 30 min to 60 min; and / or, The treatment temperature of the ultrasonic treatment is 40°C to 60°C; and / or, The ultrasonic frequency of the ultrasonic treatment is 30kHz to 50kHz.

3. The method for preparing the tobacco extract according to claim 1, characterized in that: The tobacco raw material is selected from one or more of Yunyan tobacco pure oil, sun-cured tobacco pure oil, Henan tobacco extract, flue-cured tobacco extract, Virginia tobacco extract, and Zimbabwe tobacco extract.

4. The method for preparing the tobacco extract according to claim 1, characterized in that: The treatment temperature of the static treatment is 0°C to 4°C; and / or, The duration of the static treatment is 12 hours to 24 hours.

5. The method for preparing the tobacco extract according to claim 1, characterized in that: The step of extracting the supernatant comprises the following steps: placing the mixed alcohol solvent after static treatment in a high-speed centrifuge; The mixed alcohol solvent is centrifuged to obtain the supernatant.

6. The method for preparing the tobacco extract according to claim 5, characterized in that: The rotation speed of the centrifugal treatment is 6000r / min to 8000r / min; and / or, The duration of the centrifugal treatment is 30 min to 60 min.

7. The method for preparing the tobacco extract according to claim 1, characterized in that: The step of removing the solvent from the supernatant comprises the following steps: placing the supernatant in a rotary evaporator; The supernatant is subjected to evaporation and concentration treatment to obtain the tobacco extract.

8. The method for preparing the tobacco extract according to claim 7, characterized in that: The heating temperature of the evaporation concentration treatment is 40°C to 50°C.

9. A method for preparing an atomized liquid, characterized in that: The following steps are involved: A tobacco extract is provided, wherein the tobacco extract is prepared by the method for preparing the tobacco extract according to any one of claims 1 to 8; The tobacco extract is mixed with a polyol solvent to obtain the atomized liquid.

10. The method for preparing the atomized liquid according to claim 9, characterized in that: In the atomized liquid, the mass proportion of the tobacco extract is 2% to 5%; and / or, The polyol solvent is selected from one or more of glycerol, ethylene glycol, propylene glycol, butylene glycol, and diethylene glycol.

Images