Flavour composition for electronic cigarettes, e-liquid for electronic cigarettes and method for preparing the same

Abstract

The application provides a flavor composition for electronic cigarettes, electronic cigarette liquid and a preparation method thereof. The flavor composition for electronic cigarettes comprises 0.1-0.4 parts of ethyl isovalerate, 2.0-5.0 parts of isoamyl acetate, 0.1-0.6 parts of ethyl butyrate, 0.4-1.6 parts of ethyl acetate, 0.1-0.6 parts of propyl acetate, 0.1-0.6 parts of myric aldehyde, 0.05-0.3 parts of malic acid liquid and 0.02-0.1 parts of acetic acid liquid. By adjusting the ratio of the flavor composition, the application makes the flavor composition have strawberry flavor, can restore the pure fruit pulp aroma of strawberries, has high restoration degree of strawberry flavor, long aftertaste and good stability after high-temperature and high-humidity baking, and can be applied to electronic cigarette liquid, thereby improving the experience of users using electronic cigarettes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarettes, in particular to a flavor composition for electronic cigarettes, an electronic cigarette liquid and a preparation method thereof. BACKGROUND

[0002] With the development of strawberry breeding technology, dozens of different flavors of strawberries have appeared on the market. The sweet, sour and fragrant smell and taste of strawberries are deeply loved by the public, and people have different standards for the taste of strawberries. The strawberry flavor of the electronic cigarette liquid on the market is not high. SUMMARY

[0003] The purpose of the present application is to overcome the problems existing in the prior art, and to provide a flavor composition for electronic cigarettes, an electronic cigarette liquid and a preparation method thereof. The flavor composition for electronic cigarettes can restore the pure fruit aroma of strawberries when the electronic cigarette liquid is atomized, has a long aftertaste and good stability after high-temperature and high-humidity baking.

[0004] The first aspect of the present application is to provide a flavor composition for electronic cigarettes, comprising, by mass fraction:

[0005] 0.1-0.4 parts of ethyl isovalerate, 2.0-5.0 parts of isoamyl acetate, 0.1-0.6 parts of ethyl butyrate, 0.4-1.6 parts of ethyl acetate, 0.1-0.6 parts of propyl acetate, 0.1-0.6 parts of myricyl aldehyde, 0.05-0.3 parts of malic acid liquid, and 0.02-0.1 parts of acetic acid liquid.

[0006] Preferably, the flavor composition for electronic cigarettes comprises, by mass fraction:

[0007] 0.15-0.25 parts of ethyl isovalerate, 3.5-4.5 parts of isoamyl acetate, 0.35-0.45 parts of ethyl butyrate, 1.1-1.3 parts of ethyl acetate, 0.15-0.25 parts of propyl acetate, 0.35-0.45 parts of myricyl aldehyde, 0.15-0.25 parts of malic acid liquid, and 0.06-0.09 parts of acetic acid liquid.

[0008] Preferably, the malic acid liquid comprises malic acid and propylene glycol, and the malic acid accounts for 10-30wt% of the total mass of the malic acid and the propylene glycol in the malic acid liquid.

[0009] Preferably, the acetic acid liquid comprises acetic acid and propylene glycol, and the acetic acid accounts for 0.5-1.5wt% of the total mass of the acetic acid and the propylene glycol in the acetic acid liquid.

[0010] The second aspect of the present application is to provide an electronic cigarette liquid, comprising, by mass fraction:

[0011] The electronic cigarette flavor composition 2.6-9.5 parts by mass, the base liquid 81-94 parts by mass, nicotine 1.5-5.0 parts by mass, and the flavoring 1.0-8.0 parts by mass.

[0012] Preferably, the electronic cigarette liquid comprises, by mass fraction: the electronic cigarette flavor composition 5.5-7.5 parts by mass, the base liquid 85-90 parts by mass, nicotine 2.5-5.0 parts by mass, and the flavoring 2.0-4.0 parts by mass.

[0013] Preferably, the base liquid comprises propylene glycol and glycerol.

[0014] Preferably, the mass ratio of the propylene glycol to the glycerol is (0.8-1.5):1.

[0015] Preferably, the nicotine comprises nicotine or nicotine salt.

[0016] Preferably, the flavoring comprises vanillin 0.2-0.7 parts by mass, ethyl maltol 0.8-1.2 parts by mass, furanone 0.05-0.5 parts by mass, leaf alcohol 0.04-0.4 parts by mass, linalool 0.02-0.15 parts by mass, and phenethyl alcohol 0-0.08 parts by mass.

[0017] Preferably, the electronic cigarette liquid further comprises a cooling agent, and the cooling agent is 0.1-1.0 parts by mass.

[0018] Preferably, the cooling agent comprises at least one of 2-isopropyl-N,2,3-trimethylbutanamide, menthol, and N-ethyl-p-menthyl-3-formamide.

[0019] A third aspect of the present application is to provide a preparation method of the electronic cigarette liquid, which comprises measuring the electronic cigarette flavor composition, the base liquid, nicotine, and the flavoring and mixing them uniformly to obtain the electronic cigarette liquid.

[0020] The present application adjusts the proportion of the flavor composition to make it have a strawberry flavor, and at the same time restore the pure fruit aroma of strawberries. The degree of restoration of the strawberry flavor is high, the aftertaste is long, and the stability after high-temperature and high-humidity baking is good. The electronic cigarette liquid can be applied to electronic cigarettes to improve the user experience of using electronic cigarettes. DETAILED DESCRIPTION

[0021] The endpoints of the ranges and any values disclosed herein are not limited to the precise values stated. The endpoints of the ranges and any values are provided as approximate descriptions of the ranges and are understood to be open-ended. Each range is a continuum of values between the upper and lower limits, inclusive of the values given as endpoints. For values that are less than one, or contain an el, e.g., 0.1-0.3, or 0.09.09, etc., the endpoints of the ranges and any values are understood to be inclusive of the one or more decimal places, as specified.

[0022] The application provides a flavor composition for electronic cigarettes, which comprises, in parts by mass, 0.1-0.4 parts of ethyl isovalerate, 2.0-5.0 parts of isoamyl acetate, 0.1-0.6 parts of ethyl butyrate, 0.4-1.6 parts of ethyl acetate, 0.1-0.6 parts of propyl acetate, 0.1-0.6 parts of myricyl aldehyde, 0.05-0.3 parts of malic acid solution and 0.02-0.1 parts of acetic acid solution.

[0023] The application selects ethyl isovalerate, isoamyl acetate, ethyl butyrate, ethyl acetate and propyl acetate from hundreds of spices as the source of the main strawberry flavor in the flavor composition formula, and cooperates with myricyl aldehyde, malic acid solution and acetic acid solution, and controls the proportion of each substance, so that a pure strawberry flavor with long-lasting aftertaste and good stability after high-temperature and high-humidity baking is prepared, which is an extremely complex process and cannot be completed through a limited number of experiments.

[0024] Therefore, the application creatively provides a flavor composition for electronic cigarettes, which is used in electronic cigarette liquid, and after the electronic cigarette liquid is atomized, the user can experience strawberry flavor with fruit flavor, thereby improving the user experience.

[0025] Specifically, the parts by mass of isoamyl acetate in the embodiment of the application range from 2.0 to 5.0. The parts by mass of isoamyl acetate in this range have the effect of strawberry main flavor. If the parts by mass of isoamyl acetate are less than 2.0, the main flavor becomes weak; if the parts by mass of isoamyl acetate are greater than 5.0, the main flavor is distorted. Preferably, the parts by mass of isoamyl acetate range from 3.5 to 4.5.

[0026] The parts by mass of ethyl isovalerate in the embodiment of the application range from 0.1 to 0.4. The parts by mass of ethyl isovalerate in this range have the effect of coordinating isoamyl acetate to form strawberry main flavor. If the parts by mass of ethyl isovalerate are less than 0.1, the main flavor becomes weak; if the parts by mass of ethyl isovalerate are greater than 0.4, the isoamyl acetate flavor is covered, and the main flavor is destroyed. Preferably, the parts by mass of ethyl isovalerate range from 0.15 to 0.25.

[0027] The parts by mass of ethyl butyrate in the embodiment of the application range from 0.1 to 0.6. The parts by mass of ethyl butyrate in this range can introduce main flavor and play the role of head note. If the parts by mass of ethyl butyrate are less than 0.1, the head note is too weak; if the parts by mass of ethyl butyrate are greater than 0.6, the main flavor is destroyed. Preferably, the parts by mass of ethyl butyrate range from 0.35 to 0.45.

[0028] The mass fraction of ethyl acetate in the embodiment of the present application is 0.4-1.6 parts. When the mass fraction of ethyl acetate is in this range, the main aroma can be enhanced. If the mass fraction of ethyl acetate is less than 0.4 parts, the sour smell disappears; if the mass fraction of ethyl acetate is greater than 1.6 parts, the main aroma is affected. Preferably, the mass fraction of ethyl acetate is 1.1-1.3 parts.

[0029] The mass fraction of ethyl propionate in the embodiment of the present application is 0.1-0.6 parts, which can enhance the authenticity of the main aroma. If the mass fraction of ethyl propionate is less than 0.1 part, the main aroma becomes weak; if the mass fraction of ethyl propionate is greater than 0.6 parts, the flavor of the main aroma is changed. Preferably, the mass fraction of ethyl propionate is 0.15-0.25 parts.

[0030] The mass fraction of myrtenal in the embodiment of the present application is 0.1-0.6 parts. When myrtenal is combined with other substances, the flavor composition prepared can reduce the leafy aroma of strawberries. If the mass fraction of myrtenal is less than 0.1 part, the leafy aroma of strawberries is lacking; if the mass fraction of myrtenal is greater than 0.6 parts, the leafy aroma is too heavy and not suitable for eating. Preferably, the mass fraction of myrtenal is 0.35-0.45 parts.

[0031] The mass fraction of malic acid liquid in the embodiment of the present application is 0.05-0.3 parts. Malic acid liquid has the effect of balancing the pH of the solution. When the mass fraction of malic acid liquid is in this range, it can enhance the sour taste of fruit and improve the suitability when combined with other substances in the flavor composition. If the mass fraction of malic acid liquid is less than 0.05 parts, the overall e-liquid palatability is affected; if the mass fraction of malic acid liquid is greater than 0.3 parts, the overall flavor taste is affected. Preferably, the mass fraction of malic acid liquid is 0.15-0.25 parts.

[0032] In some embodiments, to further improve the taste of the flavor composition for electronic cigarettes, the concentration of malic acid liquid can be adjusted. Specifically, malic acid and propylene glycol are mixed to obtain a malic acid and propylene glycol mixture, and the malic acid accounts for 10-30wt% of the malic acid and propylene glycol mixture. Adding 10-30wt% malic acid liquid with the adjusted concentration to the flavor composition for electronic cigarettes can enhance the sour taste of fruit and improve the suitability. Alternatively, the flavor composition for electronic cigarettes contains 0.05-0.3 parts of malic acid liquid with a concentration of 20wt% (malic acid accounts for 20wt% of the malic acid and propylene glycol mixture).

[0033] The mass fraction of acetic acid liquid in the embodiment of the present application is 0.02-0.1 parts. The acetic acid liquid has the effect of enhancing the main flavor and making the aroma light. When the mass fraction of the acetic acid liquid is in this range, the acetic acid liquid has the effect of harmonizing the taste of the e-liquid and reducing the aroma pressure. If the mass fraction of the acetic acid liquid is less than 0.02 parts, the aroma lacks coordination and the taste becomes heavy; if the mass fraction of the acetic acid liquid is greater than 0.1 part, the aroma is easily deteriorated. Preferably, the mass fraction of the acetic acid liquid is 0.06-0.09 parts.

[0034] In some embodiments, in order to further improve the taste of the e-liquid flavor composition, the concentration of the acetic acid liquid can be adjusted. Specifically, acetic acid is mixed with propylene glycol to obtain an acetic acid and propylene glycol mixture, and the acetic acid accounts for 0.05-1.5wt% of the acetic acid and propylene glycol mixture. Adding 0.05-1.5wt% acetic acid liquid with the adjusted concentration to the e-liquid flavor composition can enhance the main flavor and make the aroma light. Alternatively, the e-liquid flavor composition contains 0.02-0.1 parts of acetic acid with a concentration of 1wt% (the acetic acid accounts for 1wt% of the acetic acid and propylene glycol mixture).

[0035] The embodiment of the present application prepares an e-liquid flavor composition by adjusting the combination and ratio of various flavors. When the flavor composition is used in e-liquid, the user can experience a unique strawberry taste, delicious meat flavor, leafy aroma, and sufficient sweetness, improving the user's experience.

[0036] The present application also provides an e-liquid, which comprises, by mass fraction:

[0037] The e-liquid flavor composition described above is 2.6-9.5 parts, the base liquid is 81-94 parts, the nicotine is 1.5-5.0 parts, and the essence is 1.0-8.0 parts.

[0038] The present application uses the prepared e-liquid flavor composition in e-liquid. After the e-liquid is atomized, the user can experience a unique strawberry taste, delicious meat flavor, leafy aroma, and sufficient sweetness, improving the user's experience.

[0039] The mass fraction of the e-liquid flavor composition of the present application is 2.6-9.5 parts. When the mass fraction of the e-liquid flavor composition is in this range, the user can experience a strawberry taste with fruit aroma, leafy aroma, and sufficient sweetness. If the mass fraction of the e-liquid flavor composition is less than 2.6 parts, the main flavor is weak; if the mass fraction of the e-liquid flavor composition is greater than 9.5 parts, the main flavor is heavy and not suitable for eating. Preferably, the mass fraction of the e-liquid flavor composition is 5.5-7.5 parts.

[0040] The mass fraction of the base liquid is 81-94 parts. When the mass fraction of the base liquid is in this range, the electronic cigarette flavor composition, nicotine, and essence can be uniformly mixed, and the stability of the electronic cigarette liquid during smoking can be ensured. Preferably, the mass fraction of the base liquid is 85-90 parts.

[0041] In some embodiments, the base liquid comprises propylene glycol and glycerol. In the base liquid, propylene glycol can be replaced by a propylene glycol replacement solvent, and glycerol can be replaced by a glycerol replacement solution. Glycerol can increase the amount of smoke generated during atomization of the electronic cigarette liquid and improve the smoking effect of the electronic cigarette liquid.

[0042] In some embodiments, the mass ratio of propylene glycol to glycerol is (0.8-1.5):1. When the mass ratio of propylene glycol to glycerol in the base liquid is in this range, on the one hand, it can ensure that the electronic cigarette flavor composition, nicotine, and essence are uniformly mixed, and on the other hand, it can increase the amount of smoke generated during atomization of the electronic cigarette liquid and improve the smoking effect of the electronic cigarette liquid.

[0043] The mass fraction of nicotine is 1.5-5.0 parts. Nicotine includes nicotine or nicotine salt. Nicotine is more preferably added in the form of a synthetic salt, specifically benzoate, tartrate, lactate, etc. The mass fraction of nicotine referred to herein refers only to the content of nicotine and does not include other components. Nicotine is a biologically active alkaloid found in Solanaceae (Solanum) plants and is an important component of electronic cigarette liquid. It can ensure the nerve stimulation effect of the electronic cigarette liquid and provide users with a sense of satisfaction. Preferably, the mass fraction of nicotine is 2.5-5.0 parts.

[0044] The mass fraction of the essence is 1.0-8.0 parts. When the mass fraction of the essence is in this range, the main fragrance is round and full, and the fragrance retention duration is prolonged. If the mass fraction of the essence is less than 1.0 part, the main fragrance is single and not full. If the mass fraction of the essence is greater than 8.0 parts, the main fragrance can be partially covered, resulting in distortion of the main fragrance. Preferably, the mass fraction of the essence is 2.0-4.0 parts.

[0045] In some embodiments, the essence comprises 0.2-0.7 parts of vanillin, 0.8-1.2 parts of ethyl maltol, 0.05-0.5 parts of furanone, 0.04-0.4 parts of leaf alcohol, 0.02-0.15 parts of linalool, and 0-0.08 parts of phenethyl alcohol. This can make the main fragrance round and full, and prolong the fragrance retention duration.

[0046] In some embodiments, the electronic cigarette liquid further comprises a cooling agent, and the cooling agent is 0.1-1.0 parts by mass fraction. After the electronic cigarette liquid is atomized, the user can feel the cool strawberry flavor aroma, which has the effect of refreshing the mind. Optionally, the cooling agent comprises at least one of N,2,3-trimethyl-2-isopropylbutanamide (WS-23), menthol and N-ethyl-p-menthyl-3-carboxamide (WS-3).

[0047] A third aspect of the present application is to provide a preparation method of the electronic cigarette liquid. The electronic cigarette flavor composition, the base liquid, nicotine and the essence are measured and mixed uniformly to obtain the electronic cigarette liquid. The electronic cigarette liquid has simple preparation method and wide application prospect.

[0048] The present application will be described in detail through examples below, but the present application is not limited to the examples below.

[0049] The flavor composition is prepared according to the proportions of the substances in Table 1. In the table, 20wt% malic acid refers to the concentration of malic acid in the malic acid and propylene glycol mixture prepared according to the mass proportion; 1wt% acetic acid refers to the concentration of acetic acid in the acetic acid and propylene glycol mixture prepared according to the mass proportion.

[0050] Table 1

[0051]

[0052] The mass ratio of propylene glycol to glycerol in the base liquid in Examples 1-7 and Comparative Examples 1-3 is shown in Table 2.

[0053] Table 2

[0054] base solution propylene glycol glycerol example 1 45 55 example 2 45 55 example 3 55 45 example 4 55 45 example 5 50 50 example 6 55 45 example 7 60 40 comparative example 1 45 55 comparative example 2 45 55 comparative example 3 45 55

[0055] The essence of Examples 1-7 and Comparative Examples 1-3 is prepared according to the proportions of the substances in Table 3.

[0056] Table 3

[0057]

[0058] The electronic cigarette liquid provided in Examples 1-7 and Comparative Examples 1-3 comprises the components shown in Table 4. The substances are mixed according to the components in Table 4 and then stirred uniformly to obtain the corresponding electronic cigarette liquid.

[0059] Table 4

[0060]

[0061]

[0062] Performance test:

[0063] 1. Table 5 is a scoring standard for evaluating the performance of electronic cigarette liquid.

[0064] Table 5

[0065]

[0066] 2. Stability performance

[0067] For example, the content of each substance before and after the electronic cigarette liquid of Example 5 was treated by high temperature and high humidity (temperature 290℃, humidity 24-30%, treatment time 24h) was recorded, and the electronic cigarette liquid of Example 5 was subjected to gas chromatography-mass spectrometry (GC-MS) analysis, and the retention time was recorded. The retention time refers to the time the sample stays in the column, that is, the time of peak emergence, as shown in Table 6.

[0068] Table 6

[0069]

[0070] The content of volatile components and non-volatile components of the electronic cigarette liquid of Example 5 changed little before and after high temperature and high humidity baking, and the electronic cigarette liquid had good stability. It should be noted that the stability of the electronic cigarette liquid of Examples 1-4 and 6-7 was comparable to that of Example 5, and will not be described here.

[0071] The electronic cigarette liquid prepared by Examples 1-7 and Comparative Examples 1-3 was added to the smoking device at the same addition amount, and was evaluated according to the scoring standard of Table 5. The average value was taken after two rounds of smoking evaluation by 15 professional flavorists, and the evaluation results are shown in Table 7.

[0072] Table 7

[0073]

[0074] As can be seen from the results in Table 7, within the scope of the present application, the liquid highly restores the flavor characteristics of strawberry, including meaty and leafy flavors, and the flavor is long-lasting, comfortable, and has good throat and nose-punching sensation, and is a good smoking liquid. The liquid of the comparative example lacks the meaty flavor of strawberry and the fresh leafy flavor, and has low restoration.

[0075] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all belong to the protection scope of the present application.

[0076] It should be further noted that the various technical features described in the above specific embodiments can be combined in any suitable manner, and the application is not limited to the combinations explicitly described. In order to avoid unnecessary repetition, the various possible combinations are not described separately in the application.

[0077] Furthermore, the various different embodiments of the application can also be combined with each other in any suitable manner, as long as it does not deviate from the idea of the application, it should also be considered as disclosed in the application.

Claims

1. A flavour composition for use in an electronic cigarette, characterised in that, According to the mass fraction, it comprises: Ethyl isovalerate 0.1-0.4 parts, isoamyl acetate 2.0-5.0 parts, ethyl butyrate 0.1-0.6 parts, ethyl acetate 0.4-1.6 parts, ethyl propionate 0.1-0.6 parts, myricyl aldehyde 0.1-0.6 parts, malic acid liquid 0.05-0.3 parts, acetic acid liquid 0.02-0.1 parts; The malic acid liquid comprises malic acid and propylene glycol, and the mass fraction of the malic acid in the malic acid liquid is 10-30% of the total mass of the malic acid and the propylene glycol.

2. The flavor composition for electronic cigarettes according to claim 1, characterized by According to the mass fraction, it comprises: Ethyl isovalerate 0.15-0.25 parts, isoamyl acetate 3.5-4.5 parts, ethyl butyrate 0.35-0.45 parts, ethyl acetate 1.1-1.3 parts, ethyl propionate 0.15-0.25 parts, myricyl aldehyde 0.35-0.45 parts, malic acid liquid 0.15-0.25 parts, acetic acid liquid 0.06-0.09 parts.

3. A flavour composition for an electronic cigarette according to claim 1 or 2, characterised in that, The acetic acid liquid comprises acetic acid and propylene glycol, The mass fraction of the acetic acid in the acetic acid liquid is 0.5-1.5% of the total mass of the acetic acid and the propylene glycol.

4. An e-liquid for an electronic cigarette, characterized by, According to the mass fraction, it comprises: The flavor composition for electronic cigarettes 2.6-9.5 parts, the base liquid 81-94 parts, nicotine or nicotine salt 1.5-5.0 parts, and the essence 1.0-8.0 parts.

5. The e-liquid of claim 4, wherein, According to the mass fraction, it comprises:

6. The e-liquid of claim 4, wherein, The base liquid comprises propylene glycol and glycerol.

7. The e-liquid of claim 6, wherein, The mass ratio of the propylene glycol to the glycerol is (0.8-1.5):

1.

8. The e-liquid of claim 4, wherein, The essence comprises vanillin 0.2-0.7 parts, ethyl maltol 0.8-1.2 parts, furanone 0.05-0.5 parts, leaf alcohol 0.04-0.4 parts, linalool 0.02-0.15 parts, and phenethyl alcohol 0-0.08 parts.

9. The e-liquid of claim 4, wherein, The electronic cigarette liquid further comprises a cooling agent, and the mass fraction of the cooling agent is 0.1-1.0 parts.

10. The e-liquid of claim 9, wherein, The cooling agent comprises at least one of 2-isopropyl-N,2,3-trimethylbutyramide, menthol, and N-ethyl-p-menthyl-3-formamide.

11. A method of preparing the e-liquid of any one of claims 4-10, wherein, The flavor composition for electronic cigarettes, the base liquid, nicotine or nicotine salt, and the essence are measured and mixed uniformly to obtain the electronic cigarette liquid.

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