Tobacco-flavored essence suitable for electronic atomized liquid and preparation method of tobacco-flavored essence

Abstract

The invention belongs to the technical field of atomized liquid component design, and particularly relates to tobacco-flavor essence suitable for electronic atomized liquid and a preparation method thereof.The tobacco-flavor essence suitable for the electronic atomized liquid comprises tobacco extract and azacyclo-flavor substances, the tobacco extract is volatile components in tobacco, and the azacyclo-flavor substances are aromatic substances. The tobacco extract and the nitrogen heterocyclic aromatic substance are mutually mixed in the form of a dispersed phase, and the weight ratio of the dispersed phase of the tobacco extract to the dispersed phase of the nitrogen heterocyclic aromatic substance is 10: (0.5-2). The method comprises the following steps: heating, distilling and extracting a tobacco extract by adopting a simultaneous distillation and extraction method, carrying out low-temperature vacuum concentration to obtain a tobacco extract, adding propylene glycol or glycerol, and uniformly mixing to obtain a tobacco extract dispersion phase; the preparation method comprises the following steps: adding a nitrogen heterocyclic aromatic substance into propylene glycol or glycerol, and uniformly mixing to obtain a nitrogen heterocyclic aromatic substance dispersion phase; and finally, uniformly mixing the tobacco extract dispersed phase and the nitrogen heterocyclic aromatic substance dispersed phase.

Description

Technical Field

[0001] The invention belongs to the technical field of atomizing liquid component design, and in particular relates to a tobacco flavor essence suitable for electronic atomizing liquid and a preparation method thereof. Background Art

[0002] As the world is trying to control cigarettes, electronic aerosol generators have developed rapidly as new tobacco products to meet consumers' smoking and health needs. The atomizing liquid of electronic aerosol generators is mainly composed of solvents, nicotine and flavors. Compared with traditional cigarettes, the tobacco flavor of the atomizing liquid of electronic aerosol generators is more dependent on tobacco flavors.

[0003] Tobacco extract as tobacco flavor can restore the original aroma of tobacco to the greatest extent, giving cigarettes full smoke, delicate taste and pure tobacco smoking experience. However, when tobacco flavor is applied to atomizer liquid, a single type of tobacco flavor often leads to a poor smoking experience. Although synthetic aroma raw materials can provide the aroma style of tobacco and cover up the impurities to a certain extent, this non-tobacco original form of aroma compensation has limited fragrance effect and it is difficult to highlight the original aroma of tobacco. It is difficult to have a tobacco smoking experience after the atomizer liquid is atomized. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a tobacco flavor essence suitable for electronic atomization liquid, including tobacco extract and nitrogen heterocyclic flavor substances, wherein the tobacco extract is a volatile component in tobacco, and the tobacco extract and the nitrogen heterocyclic flavor substances are mixed with each other in the form of dispersed phases, and the weight ratio of the dispersed phase of the tobacco extract to the dispersed phase of the nitrogen heterocyclic flavor substances is 10:0.5~2.

[0005] Preferably, the weight ratio of the dispersed phase of tobacco extract to the dispersed phase of nitrogen heterocyclic flavor substances is 10:1.

[0006] The present invention also provides a method for preparing the above-mentioned tobacco flavor essence suitable for electronic atomization liquid:

[0007] (1) Preparation of tobacco extract

[0008] A simultaneous distillation extraction method is adopted, wherein the steam generated by the distillation of tobacco extract after adding water to disperse the tobacco extract is mixed with the steam generated by the distillation of the extraction solvent, and condensed, and then the organic phase is concentrated in a low-temperature vacuum to obtain a tobacco extract, and the tobacco extract is added to propylene glycol or glycerin and mixed to form a dispersed phase of the tobacco extract;

[0009] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine, and 2,4,6-trimethylpyridine to propylene glycol or glycerol and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0010] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are mixed uniformly.

[0011] Preferably, in step (1), the tobacco extract is Virginia tobacco extract.

[0012] Preferably, in step (1), the tobacco extract is added with water and dispersed sufficiently in a mass ratio of tobacco extract to water of 1:1 to 20, and then heated and distilled. The heating and distillation temperature of the tobacco extract is 100°C to 120°C.

[0013] Preferably, in step (1), the extraction solvent is petroleum ether or n-hexane, the amount of the extraction solvent is 1 to 10 times the mass of the tobacco extract, and the heating distillation temperature of the extraction solvent is 50° C. to 80° C.

[0014] Preferably, in step (1), the low-temperature vacuum concentration temperature is 40°C to 70°C.

[0015] Preferably, in step (1), the tobacco extract is added to propylene glycol or glycerol at a mass concentration of 1% to 10%.

[0016] Preferably, in step (2), 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine are added to propylene glycol or glycerol at a mass concentration of 0.001% to 0.01%.

[0017] The beneficial effect of this solution is that by adding nitrogen heterocyclic flavor substances to the volatile components extracted from tobacco, the impurities and irritating odors during the smoking process can be covered or avoided, the smoking taste is improved, and good coordination is reflected. Moreover, the above effect can be achieved when the nitrogen heterocyclic flavor substances are added in a very low amount, which should be the synergistic effect of the nitrogen heterocyclic flavor substances on the volatile components extracted from tobacco in this solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a process flow chart for preparing tobacco flavor essence suitable for electronic atomization liquid in this application. DETAILED DESCRIPTION

[0019] The tobacco flavor essence suitable for electronic atomization liquid in this scheme includes tobacco extract and nitrogen heterocyclic flavor substances, wherein the tobacco extract is a volatile component in tobacco, and the flavor essence is prepared by the following method:

[0020] (1) Preparation of tobacco extract

[0021] The method adopts the simultaneous distillation extraction method, wherein the Virginia tobacco extract is dispersed with 1 to 20 times of water and then heated and distilled at 100 to 120°C to generate steam, which is mixed with the steam generated by the extraction solvent heated and distilled at 50 to 80°C and condensed, and the organic phase is taken and vacuum concentrated at 40 to 70°C, and then propylene glycol or glycerol is added and mixed to form the dispersed phase of the tobacco extract (the target product is relatively small in amount, and is attached to the container wall after sufficient vacuum concentration, and is directly dispersed by adding the solvent).

[0022] The extraction solvent is petroleum ether or n-hexane, and the amount of the extraction solvent is 1 to 10 times the mass of the tobacco extract;

[0023] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine, and 2,4,6-trimethylpyridine to propylene glycol or glycerol at a mass concentration of 0.001% to 0.01% and mixing them uniformly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0024] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are mixed uniformly in a weight ratio of 10:0.5-2.

[0025] Example 1

[0026] (1) Preparation of tobacco extract

[0027] The simultaneous distillation extraction method was adopted, 300g of Virginia tobacco extract was dispersed in 1.8L of water and then heated and distilled at 110°C to generate steam, and the steam generated by heating and distilling 1.2L of petroleum ether at 70°C was mixed and condensed, and the organic phase was concentrated at 40°C under vacuum, and propylene glycol was added and mixed to obtain 10g of tobacco extract dispersed phase;

[0028] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.01% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0029] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are uniformly mixed in a mass ratio of 10:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0030] Example 2

[0031] The mixing ratio of the tobacco extract dispersed phase and the nitrogen heterocyclic flavor substance dispersed phase was changed, and the other operations were the same as those in Example 1:

[0032] (1) Preparation of tobacco extract

[0033] The simultaneous distillation extraction method was adopted, 300g of Virginia tobacco extract was dispersed in 1.8L of water and then heated and distilled at 110°C to generate steam, and the steam generated by heating and distilling 1.2L of petroleum ether at 70°C was mixed and condensed, and the organic phase was concentrated at 40°C under vacuum, and propylene glycol was added and mixed to obtain 10g of tobacco extract dispersed phase;

[0034] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.01% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0035] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are mixed uniformly in a mass ratio of 5:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0036] Example 3

[0037] The mixing ratio of the tobacco extract dispersed phase and the nitrogen heterocyclic flavor substance dispersed phase was changed, and the other operations were the same as those in Example 1:

[0038] (1) Preparation of tobacco extract

[0039] The simultaneous distillation extraction method was adopted, 300g of Virginia tobacco extract was dispersed in 1.8L of water and then heated and distilled at 110°C to generate steam, and the steam generated by heating and distilling 1.2L of petroleum ether at 70°C was mixed and condensed, and the organic phase was concentrated at 40°C under vacuum, and then added to propylene glycol and mixed to obtain 10g of tobacco extract dispersed phase;

[0040] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.01% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0041] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are uniformly mixed in a mass ratio of 15:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0042] Example 4

[0043] The mixing ratio of the tobacco extract dispersed phase and the nitrogen heterocyclic flavor substance dispersed phase was changed, and the other operations were the same as those in Example 1:

[0044] (1) Preparation of tobacco extract

[0045] The simultaneous distillation extraction method was adopted, 300g of Virginia tobacco extract was dispersed in 1.8L of water and then heated and distilled at 110°C to generate steam, and the steam generated by heating and distilling 1.2L of petroleum ether at 70°C was mixed and condensed, and the organic phase was concentrated at 40°C under vacuum, and propylene glycol was added and mixed to obtain 10g of tobacco extract dispersed phase;

[0046] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.01% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0047] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are uniformly mixed in a mass ratio of 20:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0048] Example 5

[0049] (1) Preparation of tobacco extract

[0050] A simultaneous distillation extraction method was used. 300 g of Virginia tobacco extract was dispersed in 0.6 L of water and then heated and distilled at 100 ° C to generate steam. The steam was mixed with the steam generated by heating and distilling 3 L of n-hexane at 80 ° C and condensed. The organic phase was concentrated at 70 ° C in a vacuum, and glycerol was added and mixed to obtain 10 g of tobacco extract dispersed phase.

[0051] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to glycerol at a mass concentration of 0.001% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0052] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are uniformly mixed in a mass ratio of 20:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0053] Example 6

[0054] (1) Preparation of tobacco extract

[0055] The simultaneous distillation extraction method was adopted, 300g of Virginia tobacco extract was dispersed in 6L of water and then heated and distilled at 150°C to generate steam, and the steam generated by heating and distilling 0.5L of n-hexane at 50°C was mixed and condensed, and the organic phase was concentrated at 60°C in a vacuum, and then glycerol was added and mixed to obtain 10g of tobacco extract dispersed phase;

[0056] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.005% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0057] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are mixed uniformly in a mass ratio of 5:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0058] Comparative Example 1

[0059] Extract the light component aroma substances from Virginia tobacco extract to replace the volatile components extracted in Example 1, and use deionized water to replace the nitrogen heterocyclic aroma substance dispersed phase as a blank control:

[0060] (1) Preparation of tobacco extract

[0061] The method of simultaneous distillation extraction is adopted. 300g of Virginia tobacco extract is dispersed in 1.8L of water and then heated and distilled at 110°C. The tobacco extract dispersion system left after the heating and distillation is concentrated at 75°C under vacuum. A sufficient amount of 95% ethanol aqueous solution is added thereto for extraction and stratification. The upper liquid phase is retained and concentrated at 50°C under vacuum to obtain tobacco oil.

[0062] The tobacco pure oil obtained above was molecularly distilled. The treatment conditions of molecular distillation were as follows: heating temperature 60°C, evaporation temperature 110°C, condensation temperature of the first stage 30°C, condensation temperature of the second stage 5°C, condensation temperature of the third stage -20°C, rotation speed 200r / min, vacuum degree 80Pa, flow rate 2ml / min, and the distilled product was about 62g of light component aroma substances.

[0063] The light component aroma substances obtained above are added with propylene glycol at a weight ratio of 1:10 and mixed to obtain a tobacco extract dispersed phase;

[0064] (2) The tobacco extract dispersed phase obtained in step (1) and deionized water are uniformly mixed in a mass ratio of 10:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0065] Comparative Example 2

[0066] On the basis of the tobacco extract of Comparative Example 1, nitrogen heterocyclic flavor substances were added, and the remaining operations were the same as those of Example 1:

[0067] (1) Preparation of tobacco extract

[0068] The method of simultaneous distillation extraction is adopted. 300g of Virginia tobacco extract is dispersed in 1.8L of water and then heated and distilled at 110°C. The tobacco extract dispersion system left after the heating and distillation is concentrated at 75°C under vacuum. A sufficient amount of 95% ethanol aqueous solution is added thereto for extraction and stratification. The upper liquid phase is retained and concentrated at 50°C under vacuum to obtain tobacco oil.

[0069] The tobacco pure oil obtained above was molecularly distilled. The treatment conditions of molecular distillation were as follows: heating temperature 60°C, evaporation temperature 110°C, condensation temperature of the first stage 30°C, condensation temperature of the second stage 5°C, condensation temperature of the third stage -20°C, rotation speed 200r / min, vacuum degree 80Pa, flow rate 2ml / min, and the distilled product was about 62g of light component aroma substances.

[0070] The light component aroma substances obtained above are added with propylene glycol at a weight ratio of 1:10 and mixed to obtain a tobacco extract dispersed phase;

[0071] (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine to propylene glycol at a mass concentration of 0.01% and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances;

[0072] (3) The tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2) are uniformly mixed in a mass ratio of 10:1 to obtain a tobacco flavor essence suitable for use in electronic atomization liquid.

[0073] The tobacco flavors prepared in the above-mentioned embodiments and comparative embodiments were respectively prepared into atomized liquids. The atomized liquid preparation methods were all as follows: weigh the tobacco flavors, add them into a mixed solvent of PG:VG=1:1 (mass ratio), mix them evenly to form an atomized liquid, the mass fraction of the tobacco flavors in the atomized liquid was 20%, and then an atomizer containing a ceramic atomization core was used to perform an atomization evaluation test. The results are shown in the following table:

[0074]

[0075] From the above table, it can be seen that after adding nitrogen heterocyclic flavor substances to the volatile components extracted from tobacco, it can cover up or avoid the impurities and irritating odors during the smoking process, improve the smoking taste, and show good coordination. Moreover, the nitrogen heterocyclic flavor substances can achieve the above effects when the addition amount is very low. This should be the synergistic effect of nitrogen heterocyclic flavor substances on the volatile components extracted from tobacco in this scheme, and the synergistic effect is also related to the relative amount of the two.

[0076] From the comparison of comparative examples 1 and 2, it can be seen that under the same relative dosage, nitrogen heterocyclic flavor substances do not show any promoting effect on tobacco extracts of other types and sources. This also further illustrates that the amount of nitrogen heterocyclic flavor substances themselves should not have any effect on the atomization smoking experience of tobacco. It can be seen that this scheme mainly achieves improvement through the synergistic effect between nitrogen heterocyclic flavor substances and tobacco extracts, but this synergistic effect is not formed after nitrogen heterocyclic flavor substances are compounded with tobacco extracts of any source and type.

[0077] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A tobacco flavor essence suitable for electronic atomization liquid, characterized in that: The tobacco flavor essence includes tobacco extract and nitrogen heterocyclic aroma substances, wherein the tobacco extract is a volatile component in tobacco, the tobacco extract and the nitrogen heterocyclic aroma substances are mixed with each other in the form of dispersed phases, and the weight ratio of the dispersed phase of the tobacco extract to the dispersed phase of the nitrogen heterocyclic aroma substances is 10:0.5-2.

2. The tobacco flavor essence suitable for electronic atomization liquid according to claim 1, characterized in that: The weight ratio of the dispersed phase of the tobacco extract to the dispersed phase of the nitrogen heterocyclic flavor substance is 10:

1.

3. A method for preparing a tobacco flavor essence suitable for electronic atomization liquid according to claim 1 or 2, characterized in that: The preparation method is: (1) Preparation of tobacco extract A simultaneous distillation extraction method is adopted, wherein the steam generated by the distillation of tobacco extract after adding water to disperse the tobacco extract is mixed with the steam generated by the distillation of the extraction solvent, and condensed, and then the organic phase is concentrated in a low-temperature vacuum to obtain a tobacco extract, and the tobacco extract is added to propylene glycol or glycerin and mixed to form a dispersed phase of the tobacco extract; (2) adding 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine, and 2,4,6-trimethylpyridine to propylene glycol or glycerol and mixing them evenly to form a dispersed phase of nitrogen heterocyclic flavor substances; (3) uniformly mixing the tobacco extract dispersed phase obtained in step (1) and the nitrogen heterocyclic flavor substance dispersed phase obtained in step (2).

4. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (1), the tobacco extract is Virginia tobacco extract.

5. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (1), the tobacco extract is added with water and dispersed sufficiently according to a mass ratio of tobacco extract to water of 1:1 to 20, and then heated and distilled. The heating and distillation temperature of the tobacco extract is 100°C to 120°C.

6. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (1), the extraction solvent is petroleum ether or n-hexane, the amount of the extraction solvent is 1 to 10 times the mass of the tobacco extract, and the heating distillation temperature of the extraction solvent is 50° C. to 80° C.

7. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (1), the low-temperature vacuum concentration temperature is 40°C to 70°C.

8. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (1), the tobacco extract is added to propylene glycol or glycerol at a mass concentration of 1% to 10%.

9. The method for preparing tobacco flavor essence suitable for electronic atomization liquid according to claim 3, characterized in that: In step (2), 2-methylpyrazine, 2,3-dimethylpyrazine, 2,3,5-trimethylpyrazine, 2,3,5,6-tetramethylpyrazine, 2-acetylpyrazine, 2-acetylpyrrole, 2-acetylpyridine, 3,5-dimethylpyridine and 2,4,6-trimethylpyridine are added to propylene glycol or glycerol at a mass concentration of 0.001% to 0.01%.

Images