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Preparation method of Yunnan black tea extract and use thereof

A technology of Dianhong tea and extract, applied in the field of preparation of Dianhong tea extract, can solve the problems of long extraction process time, loss of natural tea aroma, poor solubility, etc. The effect of extraction efficiency

Active Publication Date: 2009-07-08
澳华达香精(广州)有限公司
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Problems solved by technology

At present, most domestic tea extracts are prepared by the continuous extraction method of low-concentration ethanol, but this method has two major disadvantages: ① The extraction process takes a long time, and it is easy to lose part of the natural tea aroma; ② In addition to the aroma components, the product also contains some Protein, impurity components, poor solubility, so that the product is subject to certain restrictions in application

Method used

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Embodiment

[0019] The preparation method of Yunnan black tea extract is prepared according to the following steps:

[0020] Step 1: In the ultrasonic extraction tank, add Yunnan black tea and add a mixed solvent, which is composed of 2 times the amount of ethanol, 2.5 times the amount of propylene glycol, 4.5 times the amount of water, and 0.05 times the amount of citric acid. Turn on the equipment, keep the temperature at 60°C, extract for 30 minutes, stop the operation, pour out the extract after cooling slightly, filter with a 200-mesh filter, and collect the extract. The remaining residue was extracted for the second time by the above method, and the second extraction liquid was collected by filtration.

[0021] Step 2: Combine the two extracts and concentrate on a rotary evaporator at a concentration temperature of 65°C and a vacuum degree of 0.06Mpa;

[0022] Step 3: Mix the obtained concentrate with a specific gravity of 1.0±0.02 with 1 times the amount of petroleum ether and 5 times ...

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Abstract

The invention relates to a method for preparing extract of yunnan black tea and application thereof. The extract is prepared and obtained by extraction with ultrasonic extraction method and the combination of silica gel chromatographic separation method; the extraction processes comprise fetching of yunnan black tea, ultrasonic extraction, silica gel chromatographic separation, concentration, and obtaining of extract in sequence. When the extract of yunnan black tea is added to the tobacco of cigarettes, the invention can cause the fragrance of cigarettes to be permeable and abundant, the smell of cigarettes to be refined and fine, and the rest smell to be significantly improved in the aspect of comfort. Compared with the traditional extraction method, by using the yunnan black tea which is extracted by the ultrasonic wave of mixed solvent, the dosage ethanol is greatly reduced, the extracting and heating time is shortened, and the extraction efficiency is improved; by combining the silica gel chromatographic separation, the quality and purity of active ingredient is improved. The method relates to uncomplicated equipment, is easy for operation, has no pollution, and provides an improved extraction method which has good effect for the preparation of the extract of yunnan black tea.

Description

Technical field: [0001] The invention relates to the extraction and application of tea leaves in natural spices, in particular to a preparation method and application of Yunnan black tea extract. Background technique: [0002] China is the hometown of tea and the earliest country to discover and use tea. Tea has many functions such as medicinal and edible. Tea extract contains amino acids and a variety of natural active ingredients, such as polyphenols, catechins, polysaccharides, vitamins, alkaloids, etc., which have the functions of refreshing, tooth-fixing, anti-caries, anti-inflammatory, anti-radiation and anti-cancer. With low side effects, it is a versatile natural plant extract that is widely used in food, beverage, cosmetics and other industries. [0003] Dian black tea is one of the six major teas in my country; its extract is a traditional tobacco additive material, which has the effect of long-lasting fragrance and improving the smoking taste and aroma quality of cigar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/18
Inventor 林德洪杨伟生钟浩
Owner 澳华达香精(广州)有限公司
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