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Extraction method of tea polyphenol

An extraction method and technology of tea polyphenols, applied in the field of plant extraction, can solve the problems of high cost, resin residue, unsuitable for industrial production, etc., and achieve the effects of prolonging the service life, saving production costs, and reducing pollution

Active Publication Date: 2015-06-10
JILLION GREEN CHINA BIOLOGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Macroporous adsorption resin is the most widely used adsorbent material. However, macroporous adsorption resin has safety hazards such as high cost and resin residue, and various and large amounts of organic solvents are used for rinsing, which is obviously not suitable for industrial production.

Method used

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  • Extraction method of tea polyphenol
  • Extraction method of tea polyphenol
  • Extraction method of tea polyphenol

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Embodiment Construction

[0038] The fresh tea leaves in this embodiment are Narcissus tea from Zhangping City, Longyan City, Fujian Province. The content of tea polyphenols in the Narcissus tea is 1.59%. The specific steps for extracting tea polyphenols are as follows.

[0039] (1) Collection of fresh leaves: select the fresh leaves of Zhangping Narcissus tea, pick and collect the middle-open face to the large open face, and 3-4 leaf tips of resident buds.

[0040] (2) Put the fresh tea leaves on a clean utensil to air-dry, the air-drying thickness is 10-15 cm, the air-drying time is 13-15 hours, preferably 15 hours; the airing temperature is 25-30 degrees.

[0041] (3) Enzyme inactivation: Heat the tea after drying in a microwave oven for 4 minutes, the output power of the microwave oven is 250-350W, and the best output power is 300W.

[0042] (4), beating: beat the heated tealeaves into a slurry, add 10 times the weight of fresh tea leaves in the beater, and set the speed of the beater to 5200r / min....

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Abstract

The invention relates to an extraction method of tea polyphenol, in particular to an efficient and safe tea polyphenol extraction technique free of a heat source and free of an organic solvent. The method comprises the following steps: with fresh leaves as a raw material, cooling, carrying out enzyme deactivation, pulping, soaking, squeezing and filtering to prepare tea polyphenol extract liquid; purifying the tea polyphenol extract liquid by the procedures of high-speed centrifugation, refined filtration, ultrafiltration membrane filtration, reverse osmosis membrane concentration, lignocellulose chromatography and spray drying. The extraction rate of the tea polyphenol which is coarsely extracted from fresh leaves is over 76%; and the purity of the purified catechinic acid powder is 62%.

Description

technical field [0001] The invention relates to plant extraction, in particular to an extraction method for extracting tea polyphenols. Background technique [0002] Tea Polyphenols (Tea Polyphenols) is the general term for polyphenols in tea, including flavanols, anthocyanins, flavonoids, flavonols and phenolic acids, mainly flavanols (catechins) , catechins account for 60-80%. Tea polyphenols have a series of important pharmacological functions such as anti-cancer, anti-aging, anti-radiation, scavenging free radicals in the human body, and lowering blood sugar and blood lipids. In recent years, people have continuously studied the health care function of tea polyphenols, and put forward higher requirements for the safety of tea polyphenols. [0003] At present, many manufacturers use dry tea (powder) to produce tea polyphenols through hot water extraction, evaporation concentration and drying. On the one hand, this production method is not conducive to clean production a...

Claims

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Application Information

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IPC IPC(8): A61K36/82A61P35/00A61P39/06A61P3/10A61P3/06
Inventor 林秀丽谢苏平林聪明
Owner JILLION GREEN CHINA BIOLOGY TECH
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