CN106753793A - A kind of cigarette preparation method of tealeaves absolute oil - Google Patents

A kind of cigarette preparation method of tealeaves absolute oil Download PDF

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Publication number
CN106753793A
CN106753793A CN201610993732.4A CN201610993732A CN106753793A CN 106753793 A CN106753793 A CN 106753793A CN 201610993732 A CN201610993732 A CN 201610993732A CN 106753793 A CN106753793 A CN 106753793A
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CN
China
Prior art keywords
tealeaves
deg
ethyl acetate
cigarette
times
Prior art date
Application number
CN201610993732.4A
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Chinese (zh)
Inventor
喻世涛
苗丽坤
庞登红
黄龙
张辉
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湖北中烟工业有限责任公司
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Priority to CN201610993732.4A priority Critical patent/CN106753793A/en
Publication of CN106753793A publication Critical patent/CN106753793A/en

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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11BPRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVING FATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES, INCLUDING EXTRACTION FROM WASTE MATERIALS; ESSENTIAL OILS; PERFUMES
    • C11B9/00Essential oils; Perfumes
    • C11B9/02Recovery or refining of essential oils from raw materials
    • C11B9/025Recovery by solvent extraction
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/24Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • A24B15/241Extraction of specific substances
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/24Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • A24B15/26Use of organic solvents for extraction
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00Preparing tobacco in the factory
    • A24B3/12Steaming, curing, or flavouring tobacco
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11BPRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVING FATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES, INCLUDING EXTRACTION FROM WASTE MATERIALS; ESSENTIAL OILS; PERFUMES
    • C11B9/00Essential oils; Perfumes
    • C11B9/02Recovery or refining of essential oils from raw materials
    • C11B9/027Recovery of volatiles by distillation or stripping

Abstract

The present invention provides a kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps:(1) tealeaves is smashed to 10 20 mesh, (2) ethanol solution dynamic countercurrent is added to extract, (3) extract solution is concentrated under reduced pressure, and obtains tealeaves concentrate, (4) tealeaves concentrate is repeatedly extracted with ethyl acetate again, ethyl acetate phase is collected, is concentrated under reduced pressure to obtain tealeaves medicinal extract, (5) in tealeaves medicinal extract to adding ethanol, carry out alcohol precipitation, precipitation solution is obtained, (6) precipitation solution obtains tealeaves absolute oil through ceramic membrane filter after being concentrated under reduced pressure.The simple efficient, energy-conserving and environment-protective of method that the present invention is provided, the tealeaves absolute oil fragrance for preparing is true to nature strong, is added in cigarette, can enrich cigarette perfume, lifts aroma quality, improves oral cavity pleasant impression, and assign cigarette peculiar style and features.

Description

A kind of cigarette preparation method of tealeaves absolute oil

Technical field

The present invention relates to a kind of preparation method of cigarette absolute oil, specifically a kind of cigarette preparation side of tealeaves absolute oil Method.

Background technology

Essentially from the bud-leaf of plant of theaceae tea, it has become people daily to tealeaves as the plant of medicine-food two-purpose The indispensable means of livelihood in life.China be also in the world tealeaves cultivate, make, drinking earliest country.Tea aroma And its research of composition has the history of nearly 100 years so far, according to pertinent literature, more than 600 kinds and tealeaves have been identified at present The related volatile materials of fragrance, although different teas kinds has different Type of aroma, but it is respectively provided with certain thing Matter basis, also the difference just because of the balance between all kinds of fragrance and various fragrance component ratios forms the perfume (or spice) of different teas Gas feature.

Knowable to current documents and materials report, most of tea extract with tealeaves as raw material, by after enzymolysis processing, Refilter, concentrate and prepare tea extract.The extract fragrance that the method is obtained not enough enriches, in lifting cigarette flavor matter, Improve oral cavity pleasant impression and assign cigarette style characteristic aspect and go back Shortcomings, and technique is complex, reappearance is not good enough, production week Phase is long.

Also there is patent to disclose the method that essence spice for cigarette is prepared using tealeaves, such as Patent No. at present: ZL201010282751.9 is first passed through carries out steam distillation to tea raw material, then carries out post adsorption treatment to distillate, obtains Tealeaves volatility causes perfumery.Due to the means using high temperature distillation, thermal sensitivity aroma component is subject to the method in easily causing tealeaves Destruction, and then have influence on the odor characteristic of final products;Patent No.:ZL201210181152.7 tea raw materials are through deproteinization After treatment, it is applied in reconstituted tobacoo.Though the method is processed through deproteinization, cellulose, colloid for wherein still containing etc. Material can bring certain negative effect to the suction mouthfeel of reconstituted tobacoo;Patent No.:ZL201510472142.2 tealeaves is former After material is extracted, successively through petroleum ether, ethyl acetate and extracting n-butyl alcohol after, then through normal-phase chromatography post separation and high performance liquid chromatography Prepare, finally give tobacco humectant.The method technique is cumbersome, and product yield is low, and consumption of organic solvent is big, easily causes pollution.

The content of the invention

The present invention is exactly to overcome present in above-mentioned technology of preparing not enough, there is provided a kind of cigarette preparation side of tealeaves absolute oil Method, the method is simple efficiently, energy-conserving and environment-protective, and tealeaves absolute oil gives off a strong fragrance, and has preferable application effect in cigarette.

The technical scheme is that:A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps:

(1) tealeaves is crushed to 10-20 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds the 2-6 times of 10%-50% ethanol water measured, in 55- Dynamic countercurrent is extracted 2 times under the conditions of 70 DEG C, each 1-2h, after extraction terminates, merges extract solution twice.

(3) by the extract solution after merging under the conditions of -0.090MPa~-0.095MPa, 50 DEG C -55 DEG C, it is concentrated under reduced pressure To tealeaves concentrate.

(4) to the ethyl acetate solution that its 0.8-1.2 times of weight is added in tealeaves concentrate, being sufficiently mixed is carried out for the first time Liquid-liquid extraction, stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 3-6 times is repeated, its 0.2-0.5 times of weight is added every time Ethyl acetate solution, after stratification, collect ethyl acetate phase.

(6) ethyl acetate phase after merging is carried out depressurizing dense in -0.090MPa~-0.095MPa, 30 DEG C of -35 DEG C of conditions It is reduced to without ethyl acetate taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to the absolute ethyl alcohol that its 4-6 times of weight is added in tealeaves medicinal extract, 30min is stirred, is stood under the conditions of 3-5 DEG C 6-12h。

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, half flowing is concentrated under reduced pressure into by membrane filtration liquid Paste, as cigarette tealeaves absolute oil.

Further, in the step (3) tealeaves concentrate relative density 1.055 ± 0.0080.

Further, condition concentrated under reduced pressure in the step (8) is:Pressure:- 0.090MPa~-0.095MPa, temperature It is 40 DEG C -45 DEG C.

It is an advantage of the invention that:The method is simple efficiently, energy-conserving and environment-protective, and the tealeaves absolute oil fragrance for preparing is true to nature strong, It is added in cigarette, cigarette perfume can be enriched, lift aroma quality, improves oral cavity pleasant impression, and assign cigarette peculiar style and features.

Specific embodiment

With reference to embodiment, the invention will be further described.

Embodiment 1

A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps that:

(1) tealeaves is crushed to 10 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds 6 times of 20% ethanol waters of amount, under the conditions of 60 DEG C Dynamic countercurrent is extracted 2 times, each 1h, after extraction terminates, merges extract solution twice.

(3) extract solution after merging is concentrated under reduced pressure into relative density 1.0580 under the conditions of -0.093MPa, 50 DEG C, is obtained To tealeaves concentrate.

(4) to its 0.8 times of ethyl acetate solution of weight is added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor liquid Extraction, stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 3 times is repeated, its 0.4 times of acetic acid of weight is added every time Ethyl ester solution, after stratification, collects ethyl acetate phase.

(6) ethyl acetate phase after merging is concentrated under reduced pressure into without ethyl acetate in -0.095MPa, 32 DEG C of conditions Taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to its 6 times of absolute ethyl alcohols of weight are added in tealeaves medicinal extract, 30min is stirred, 7h is stood under the conditions of 3 DEG C.

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, by membrane filtration liquid -0.090MPa, 40 DEG C Under the conditions of, it is concentrated under reduced pressure into half flowing paste, as cigarette tealeaves absolute oil.

Embodiment 2

A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps that:

(1) tealeaves is crushed to 20 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds 5 times of 30% ethanol waters of amount, under the conditions of 55 DEG C Dynamic countercurrent is extracted 2 times, each 1.5h, after extraction terminates, merges extract solution twice.

(3) extract solution after merging is concentrated under reduced pressure into relative density 1.060 under the conditions of -0.095MPa, 55 DEG C, is obtained To tealeaves concentrate.

(4) to its 1.2 times of ethyl acetate solutions of weight are added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor liquid Extraction, stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 4 times is repeated, its 0.3 times of acetic acid of weight is added every time Ethyl ester solution, after stratification, collects ethyl acetate phase.

(6) ethyl acetate phase after merging is concentrated under reduced pressure into without ethyl acetate in -0.092MPa, 35 DEG C of conditions Taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to its 4.5 times of absolute ethyl alcohols of weight are added in tealeaves medicinal extract, 30min is stirred, is stood under the conditions of 4.2 DEG C 9h。

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, by membrane filtration liquid -0.094MPa, 44 DEG C Under the conditions of, it is concentrated under reduced pressure into half flowing paste, as cigarette tealeaves absolute oil.

Embodiment 3

A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps that:

(1) tealeaves is crushed to 20 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds 2.5 times of 15% ethanol waters of amount, in 60 DEG C of conditions Lower dynamic countercurrent is extracted 2 times, each 1.5h, after extraction terminates, merges extract solution twice.

(3) extract solution after merging is concentrated under reduced pressure into relative density 1.0424 under the conditions of -0.090MPa, 52 DEG C, is obtained To tealeaves concentrate.

(4) to its 1.0 times of ethyl acetate solutions of weight are added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor liquid Extraction, stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 6 times is repeated, its 0.2 times of acetic acid of weight is added every time Ethyl ester solution, after stratification, collects ethyl acetate phase.

(6) ethyl acetate phase after merging is concentrated under reduced pressure into without ethyl acetate in -0.095MPa, 30 DEG C of conditions Taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to its 5.5 times of absolute ethyl alcohols of weight are added in tealeaves medicinal extract, 30min is stirred, 8h is stood under the conditions of 5 DEG C.

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, by membrane filtration liquid -0.095MPa, 43 DEG C Under the conditions of, it is concentrated under reduced pressure into half flowing paste, as cigarette tealeaves absolute oil.

Embodiment 4

A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps that:

(1) tealeaves is crushed to 10 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds 2 times of 25% ethanol waters of amount, under the conditions of 65 DEG C Dynamic countercurrent is extracted 2 times, each 2h, after extraction terminates, merges extract solution twice.

(3) extract solution after merging is concentrated under reduced pressure into relative density 1.0557 under the conditions of -0.093MPa, 54 DEG C, is obtained To tealeaves concentrate.

(4) to its 0.85 times of ethyl acetate solution of weight is added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor Liquid is extracted, and stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 5 times is repeated, its 0.35 times of acetic acid of weight is added every time Ethyl ester solution, after stratification, collects ethyl acetate phase.

(6) ethyl acetate phase after merging is concentrated under reduced pressure into without ethyl acetate in -0.092MPa, 31 DEG C of conditions Taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to its 4 times of absolute ethyl alcohols of weight are added in tealeaves medicinal extract, 30min is stirred, is stood under the conditions of 3.7 DEG C 10h。

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, by membrane filtration liquid -0.090MPa, 42 DEG C Under the conditions of, it is concentrated under reduced pressure into half flowing paste, as cigarette tealeaves absolute oil.

Embodiment 5

A kind of cigarette preparation method of tealeaves absolute oil, comprises the following steps that:

(1) tealeaves is crushed to 10 mesh, prepares tea raw material, it is standby.

(2) tea raw material after being processed through step (1), adds 4.5 times of 10% ethanol waters of amount, in 70 DEG C of conditions Lower dynamic countercurrent is extracted 2 times, each 2h, after extraction terminates, merges extract solution twice.

(3) extract solution after merging is concentrated under reduced pressure into relative density 1.0533 under the conditions of -0.090MPa, 55 DEG C, is obtained To tealeaves concentrate.

(4) to its 0.9 times of ethyl acetate solution of weight is added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor liquid Extraction, stratification obtains ethyl acetate phase.

(5) in the water phase after being processed through step (4), extraction 3 times is repeated, its 0.5 times of acetic acid of weight is added every time Ethyl ester solution, after stratification, collects ethyl acetate phase.

(6) ethyl acetate phase after merging is concentrated under reduced pressure into without ethyl acetate in -0.095MPa, 35 DEG C of conditions Taste, prepares tealeaves medicinal extract.The ethyl acetate that concentration is distilled out can be recycled.

(7) to its 5.2 times of absolute ethyl alcohols of weight are added in tealeaves medicinal extract, 30min is stirred, is stood under the conditions of 3 DEG C 11h。

(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, by membrane filtration liquid -0.090MPa, 45 DEG C Under the conditions of, it is concentrated under reduced pressure into half flowing paste, as cigarette tealeaves absolute oil.

Cigarette effect is smoked panel test experiment:The cigarette that will be prepared in above-mentioned five embodiments is with green tea absolute oil respectively according to 0.1% Adding proportion, is sprayed in pipe tobacco, rolls into cigarette, and to be not added with the cigarette of green tea absolute oil as reference substance.9 are chosen to comment Suction personnel smoked panel test.Smoking result shows that the cigarette flavor feature that with the addition of green tea absolute oil is obvious, can enrich cigarette perfume, carries Aroma quality is risen, improves oral cavity pleasant impression, and assign cigarette idiosyncrasy feature.Specific smoking result such as following table:

Cigarette green tea absolute oil is smoked panel test effect table

In the effect above table, aroma quality effect is better, and score value is higher, 18 points of full marks;Perfume quantity effect more good grades are higher, 15 points of full marks;Smoke behavior is better, and score value is higher, 10 points of full marks;The miscellaneous fewer score value of gas is higher, 12 points of full marks;Smaller point of excitant It is worth higher, 20 points of full marks;Pleasant impression is more comfortable, and score value is higher, 25 points of full marks, amounts to 100 points of full marks.

Be can be seen that come the five kinds of different cigarettes that with the addition of the preparation in the present invention are used with cigarette by the effect above contrast table Substantially, aroma quality lifting, perfume quantity increases cigarette odor characteristic after green tea absolute oil, and miscellaneous gas and excitant are reduced, and pleasant impression is more easypro It is suitable.

The detailed description of specific embodiments of the present invention is the foregoing is only, the present invention is not limited with this, it is all at this Any modification, equivalent and improvement for being made in the mentality of designing of invention etc., should be included in protection scope of the present invention it It is interior.

Claims (3)

1. a kind of cigarette preparation method of tealeaves absolute oil, it is characterised in that comprise the following steps:
(1) tealeaves is crushed to 10-20 mesh, prepares tea raw material, it is standby;
(2) tea raw material after being processed through step (1), adds the 2-6 times of 10%-50% ethanol water measured, at 55-70 DEG C Under the conditions of dynamic countercurrent extract 2 times, each 1-2h after extraction terminates, merges extract solution twice;
(3) extract solution after merging is concentrated under reduced pressure to give tea under the conditions of -0.090MPa~-0.095MPa, 50 DEG C -55 DEG C Leaf concentrate;
(4) to the ethyl acetate solution that its 0.8-1.2 times of weight is added in tealeaves concentrate, being sufficiently mixed carries out the first not good liquor liquid Extraction, stratification obtains ethyl acetate phase;
(5) in the water phase after being processed through step (4), extraction 3-6 times is repeated, the second of its 0.2-0.5 times of weight is added every time Acetate solution, after stratification, collects ethyl acetate phase;
(6) ethyl acetate phase after merging through step (4) and step (5) -0.090MPa~-0.095MPa, 30 DEG C -35 DEG C Under the conditions of, it is concentrated under reduced pressure into without ethyl acetate taste, prepare tealeaves medicinal extract;
(7) to the absolute ethyl alcohol that its 4-6 times of weight is added in tealeaves medicinal extract, 30min is stirred, 6- is stood under the conditions of 3-5 DEG C 12h;
(8) precipitation solution for obtaining step (7), using 100nm ceramic membrane filters, half flowing cream is concentrated under reduced pressure into by membrane filtration liquid Shape, as cigarette tealeaves absolute oil.
2. the cigarette according to claim 1 preparation method of tealeaves absolute oil, it is characterised in that:Tealeaves in the step (3) The relative density 1.055 ± 0.0080 of concentrate.
3. the cigarette according to claim 1 preparation method of tealeaves absolute oil, it is characterised in that:Decompression in the step (8) The condition of concentration is:Pressure:- 0.090MPa~-0.095MPa, temperature are 40 DEG C -45 DEG C.
CN201610993732.4A 2016-11-11 2016-11-11 A kind of cigarette preparation method of tealeaves absolute oil CN106753793A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108192726A (en) * 2018-03-29 2018-06-22 武汉黄鹤楼香精香料有限公司 A kind of preparation method of cigarette tree moss absolute
CN108354220A (en) * 2018-03-07 2018-08-03 湖北中烟工业有限责任公司 A kind of preparation method of Sun cured tobacco molecular distillation object

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JPS619028B2 (en) * 1981-12-25 1986-03-19 Nippon Tabako Sangyo Kk
KR20040018691A (en) * 2002-08-26 2004-03-04 임선 The preparation method of tabacco
CN1692842A (en) * 2005-05-19 2005-11-09 李�荣 Reproduced tobacco by adding tea
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CN101342019A (en) * 2008-07-29 2009-01-14 红云烟草(集团)有限责任公司 Petroleum ether extracted green tea extract, preparation and application thereof
CN101473879A (en) * 2008-11-28 2009-07-08 华芳烟用香料有限公司 Preparation method of Yunnan black tea extract and use thereof
CN103387873A (en) * 2013-07-29 2013-11-13 湖北中烟工业有限责任公司 Preparation method of cigarette fig extract
CN103497836A (en) * 2013-09-27 2014-01-08 福建中烟工业有限责任公司 Tea flower essence, preparation method and application of essence to cigarette
CN104178357A (en) * 2014-09-10 2014-12-03 嘉兴市得百科新材料科技有限公司 Preparation method of green tea flavor for cigarettes
CN104928030A (en) * 2015-06-18 2015-09-23 湖北中烟工业有限责任公司 Preparation method for plum spice used for cigarette
CN105950298A (en) * 2016-07-18 2016-09-21 福建中烟工业有限责任公司 Preparation methods of tea hydrolat and tea essential oil

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JPS619028B2 (en) * 1981-12-25 1986-03-19 Nippon Tabako Sangyo Kk
KR20040018691A (en) * 2002-08-26 2004-03-04 임선 The preparation method of tabacco
CN1692842A (en) * 2005-05-19 2005-11-09 李�荣 Reproduced tobacco by adding tea
CN101195646A (en) * 2006-12-07 2008-06-11 首都医科大学宣武医院 Production method of stilbene glycoside extract
CN101342019A (en) * 2008-07-29 2009-01-14 红云烟草(集团)有限责任公司 Petroleum ether extracted green tea extract, preparation and application thereof
CN101473879A (en) * 2008-11-28 2009-07-08 华芳烟用香料有限公司 Preparation method of Yunnan black tea extract and use thereof
CN103387873A (en) * 2013-07-29 2013-11-13 湖北中烟工业有限责任公司 Preparation method of cigarette fig extract
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CN104178357A (en) * 2014-09-10 2014-12-03 嘉兴市得百科新材料科技有限公司 Preparation method of green tea flavor for cigarettes
CN104928030A (en) * 2015-06-18 2015-09-23 湖北中烟工业有限责任公司 Preparation method for plum spice used for cigarette
CN105950298A (en) * 2016-07-18 2016-09-21 福建中烟工业有限责任公司 Preparation methods of tea hydrolat and tea essential oil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108354220A (en) * 2018-03-07 2018-08-03 湖北中烟工业有限责任公司 A kind of preparation method of Sun cured tobacco molecular distillation object
CN108192726A (en) * 2018-03-29 2018-06-22 武汉黄鹤楼香精香料有限公司 A kind of preparation method of cigarette tree moss absolute

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