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Tea stem extract of oolong tea and preparation method and application thereof

A technology of oolong tea and extracts, which is applied in the preparation and application of plant essences, can solve the problems of short fragrance retention time and strong volatility of extracts, and achieve the effects of improving aftertaste, delaying release, and low production cost

Active Publication Date: 2012-08-29
湖南嘉利香料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since only ethanol is used as the extraction solvent, only alcohol-soluble substances can be extracted, the components of the obtained extract have certain limitations, and the volatility of ethanol is strong, the fragrance retention time of the obtained extract is relatively short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An oolong tea stalk extract, which uses an extraction solvent to extract oolong tea stalks, and the extract is obtained after filtration and concentration. The oolong tea stalks come from the winnowing process for preparing oolong tea; its appearance is dark green thick Liquid, with natural flowery and fruity aroma, tea fragrance, transparent aroma, natural mellow; soluble in water, propylene glycol, ethanol; detected by GC-MS method, its main components include hydrocarbons (mainly alkenes), alcohols Classes, esters, ketones, aldehydes, acids, phenols, heterooxygen compounds, nitrogen-containing compounds; such as a-farnesene, phenylethyl alcohol, 2-benzoic acid-2-phenylethyl ester, hexanoic acid-cis -3-hexenyl ester, b-ionone, indole, phytol, cis-3-hexenyl benzoate, 2-pentylfuran, cis-jasmone, a-ionone, etc.

[0020] As mentioned above the preparation method of oolong tea stem extract, it comprises the following steps:

[0021] (1) Raw material processing: sieve the ...

Embodiment 2

[0030] According to the ratio of tea stems: extraction solvent 1:8, tea stems and extraction solvent were added to a sealed container, and the temperature was 60°C, and the extraction was performed for 4 hours, and then filtered through a 60-mesh screen to obtain the extraction solution; The extract was concentrated at a vacuum of 0.02Mpa and a temperature of 70°C to obtain a concentrate. The specific gravity of the concentrate is controlled at 1.06g / cm 3 ~1.16g / cm 3 (the present embodiment is 1.08g / cm 3 ). The extraction solvent formula is 95% ethanol:99.5% propylene glycol:clean water=80:5:15, and the sum of each component is 100.

[0031] The tea stalk extract of oolong tea is diluted with 50%~95% ethanol and 99.5% propylene glycol with a concentration of 50%~95% (the present embodiment is 70%), and is evenly added in the shredded tobacco by 0.1% of shredded tobacco weight; The ratio of tea stem extract: ethanol: propylene glycol is 15:70:15, and the sum of each compone...

Embodiment 3

[0033] The extraction solvent is 95% ethanol. According to the ratio of tea stems: extraction solvent 1:12, tea stems and extraction solvent were added to a sealed container, and the temperature was 60°C, and the extraction was carried out for 6 hours, and then filtered through a 60-mesh screen to obtain the extraction solution; The extract was concentrated at a vacuum of 0.02Mpa and a temperature of 70°C to obtain a concentrate. The specific gravity of the concentrate is controlled at 1.06g / cm 3 ~1.16g / cm 3 (the present embodiment is 1.08g / cm 3 ).

[0034] The tea stalk extract of oolong tea is diluted with 50%~95% ethanol and 99.5% propylene glycol with a concentration of 50%~95% (the present embodiment is 70%), and is evenly added in the shredded tobacco by 0.1% of shredded tobacco weight; The ratio of tea stem extract: ethanol: propylene glycol is 15:40:45, and the sum of each component is 100. The rest are the same as embodiment 1.

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Abstract

The invention discloses a method for preparing a tea stem extract of oolong tea from tea stems of the oolong tea serving as raw materials and application thereof. The method comprises the following steps of: extracting the tea stems of the oolong tea by adopting a lixiviating solvent, and filtering and concentrating extract liquor to prepare the tea stem extract. The tea stem extract is invisiblegreen thick liquid in appearance, has natural floral and fruity fragrance and faint scent of tea, the fragrance is diffused, natural and mellow; the tea stem extract can be dissolved in water, propylene glycol and ethanol, and comprises the main components: hydrocarbon (mainly on alkenes), alcohols, esters and ketones. The tea stem extract has the advantages of simple process and equipment, convenient operation, no solvent pollution in the extract and abundant varieties of flavor and essence of plant sources, can give the special fragrance of tobacco, enrich smoke fragrance, reduce stimulation and offensive taste and improve aftertaste of mouthfeel when used for cigarette production, and utilizes the fragrance fixing effect of the propylene glycol in the lixiviating solvent fully, delays the dilute release of fragrant materials and has the effect of hydroscopicity; and simultaneously, because the raw materials are wastes, the production cost is low, and tea growers can increase income.

Description

Technical field: [0001] The invention relates to the preparation and application of a plant essence, in particular to an oolong tea stalk extract prepared by using oolong tea stalks as raw materials, a preparation method and application thereof. Background technique: [0002] In recent years, as smoking and health issues have attracted more and more attention, the tobacco industry and its suppliers have improved the smoking safety of cigarettes, reduced the harmful components in cigarette smoke, and improved the comfort of smoking. A lot of research and development has been done on flavors and essences. For example, the application number is 200810058754.7, the application date is July 29, 2008, and the patent application titled a green tea extract extracted from petroleum ether and its preparation method and application discloses a method of mixing green tea and petroleum ether evenly, and extracting , solid-liquid separation, distillation and concentration to prepare gree...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B3/12C11B9/00
Inventor 董德华谢清桃谢春桥董颖李建军
Owner 湖南嘉利香料有限公司
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