Tobacco extract, preparation method and application thereof and tobacco product

A technology of tobacco extract and tobacco, which is applied in the fields of tobacco, application, and treatment of tobacco, and can solve problems such as unfavorable smoking of cigarettes, difficulty in large-scale production, increased irritation and waxy smell of smoke

Active Publication Date: 2021-11-12
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: In terms of removing plant wax, the existing technology has a good removal efficiency for long-chain alkanes, but cannot effectively reduce the content of low-carbon alkanes; higher fatty acids in tobacco extracts are not good for cigarette smoking, and the main performance In order to increase the irritation and waxy smell of smoke, less attention has been paid to the removal of such substances in separation technology; the processes of column chromatography, alkali extraction and acid precipitation are relatively complicated, and the conditions are not easy to control, so it is difficult to produce on a large scale

Method used

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  • Tobacco extract, preparation method and application thereof and tobacco product
  • Tobacco extract, preparation method and application thereof and tobacco product
  • Tobacco extract, preparation method and application thereof and tobacco product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the tobacco extract of the present embodiment is as follows:

[0036] (1) Pulverize the tobacco leaves to 100 mesh, transfer to the subcritical extraction kettle, then add dimethyl ether, the mass ratio of tobacco leaf powder to dimethyl ether is 1:8, and the entraining agent is 95% ethanol (the amount is dimethyl ether 5% of the volume), extracted at 25°C for 2 hours, the extraction pressure was the saturated vapor pressure of dimethyl ether at this temperature, and evaporated under reduced pressure after the extraction was completed to obtain tobacco extract;

[0037] (2) Add 5 times the mass of 95% ethanol to the tobacco extract obtained in step (1), heat to 30°C and keep it for 60min to fully dissolve it; then cool to room temperature, and transfer to -20°C refrigerator to freeze 8h; low-temperature suction filtration to obtain the filtrate, and the filtrate was concentrated under reduced pressure until ethanol-free to obtain a tobacco conc...

Embodiment 2

[0040] The preparation method of the tobacco extract of the present embodiment is as follows:

[0041] (1) Pulverize the tobacco leaves to 100 mesh, transfer to the subcritical extraction kettle, then add dimethyl ether, the mass ratio of tobacco leaf powder and dimethyl ether is 1:10, entrainer absolute ethanol (consumption is dimethyl ether volume 10% of 10%), extracted at 40°C for 0.5h, the extraction pressure was the saturated vapor pressure of dimethyl ether at this temperature, and evaporated under reduced pressure after the extraction was completed to obtain tobacco extract;

[0042] (2) Add 10 times the mass of absolute ethanol to the tobacco extract obtained in step (1), heat it to 50°C and keep it for 20 minutes to fully dissolve it; then cool it to room temperature, and transfer it to a -5°C refrigerator to freeze 24h; centrifuge at low temperature (4000rpm, 10min), and concentrate the supernatant under reduced pressure until ethanol-free to obtain tobacco concentra...

Embodiment 3

[0045] The preparation method of the tobacco extract of the present embodiment is as follows:

[0046] (1) Crush the tobacco leaves to 50 mesh, transfer them to a subcritical extraction kettle, then add butane, the ratio of tobacco leaf powder to butane is 1:20, extract at 50°C for 1 hour, and the extraction pressure is butane at Saturation vapor pressure at this temperature, evaporate under reduced pressure after extraction finishes, obtain tobacco extract;

[0047](2) Add 8 times the mass of absolute ethanol to the tobacco extract obtained in step (1), heat to 40°C and keep it for 40min to fully dissolve it; then cool to room temperature, and transfer to -15°C refrigerator to freeze 12h; centrifuge at low temperature (4000rpm, 10min), and concentrate the supernatant under reduced pressure until ethanol-free to obtain tobacco concentrate;

[0048] (3) Transfer the tobacco concentrate obtained in step (2) to a molecular distillation feed tank, and carry out primary molecular ...

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Abstract

The invention belongs to the technical field of preparation of tobacco flavors and fragrances, and particularly relates to a tobacco extract, a preparation method and application thereof and a tobacco product. The preparation method of the tobacco extract comprises the following steps that (1), tobacco leaves are smashed and then subjected to subcritical extraction, an extracting agent is removed, tobacco extractum is obtained, and the extracting agent is butane or dimethyl ether; (2) alcohol precipitation and solid-liquid separation are carried out on the tobacco extractum obtained in the step (1), and the obtained clear liquid is concentrated to obtain a tobacco concentrate; and (3) the tobacco concentrate obtained in the step (2) is subjected to first-stage molecular distillation, heavy components obtained through the first-stage molecular distillation are subjected to second-stage molecular distillation, the obtained light components are the tobacco extract, the first-stage molecular distillation temperature is 40-80 DEG C, the distillation pressure is 0.001-0.01 mbar, the second-stage molecular distillation temperature is 100-120 DEG C, and the distillation pressure is 0.001-0.01 mbar. The method is simple in process and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of preparation of tobacco essence and fragrance, and in particular relates to a tobacco extract, its preparation method and application, and tobacco products. Background technique [0002] Tobacco extract is extracted from tobacco and contains the original aroma components of tobacco. It has the advantages of natural and harmonious aroma, complementing the original aroma of tobacco and highlighting style characteristics. It is an irreplaceable aroma raw material for cigarette flavoring and new tobacco product development. [0003] The product components of tobacco extracts are complex. While endowing tobacco extracts with a natural sense and richness, it also causes problems such as low content of aroma components and unclear style characteristics. At present, a variety of separation technologies are applied to the refined processing of tobacco extracts, such as column chromatography, membrane separation, pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B15/26A24B15/30
CPCA24B15/26A24B15/30Y02P20/54
Inventor 徐秀娟史清照何保江王丁众刘珊刘俊辉崔凯屈展杨春强宗永立张建勋
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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