Liquid and powder persimmon tannin and separating extracting process thereof

A persimmon and tannin technology, which is applied in application, food preparation, food science, etc., can solve the problems of increasing production cost, difficult industrial promotion and application, and complicated process

Inactive Publication Date: 2013-05-01
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of persimmon powder product either has low tannin content, low tannin extraction rate, or complex process, which requires the participation of various biological enzyme preparations, which increases production costs, and is not easy to promote and apply industrially.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: produce solid powdery persimmon tannin as raw material with green persimmon produced in Taihang Mountains, Hebei:

[0016] (1) Collect green persimmon fruits around September 20, rinse them with tap water in a fruit washing machine and drain the water, cut off the pedicles with stainless steel knives, cut them into small pieces and put them into a screw juicer to squeeze and collect the juice. Add a small amount of water to the pomace and squeeze it again, and combine the juice from the two squeezes;

[0017] (2) The persimmon juice filtered through a 60-mesh filter cloth is placed in a sandwich pot and heated at 60°C for 10 minutes to sterilize, then poured into a fermentation tank and cooled to room temperature, and 0.05% wine is added according to the weight of the persimmon juice. Fermentation, ferment for about 5 days to measure the soluble solids content of the fermentation broth. When the content is lower than 2%, heat the fermentation broth to 60°C...

Embodiment 2

[0022] Embodiment 2: Production of liquid persimmon tannin by using the defective fruit that fell during the fruit thinning period of persimmons in Taihang Mountains, Hebei Province as raw material:

[0023] (1) Collect the residual persimmons scattered in the middle and late August, wash, remove the stalks, and squeeze the juice to obtain the juice;

[0024] (2) The juice is placed in a fermentation tank and fermented by natural fermentation for about 10 days, and the soluble solid content of the fermentation broth is measured. When the content is lower than 2%, the fermentation broth is heated to 60°C, kept for 5 minutes to stop fermentation, and used while hot 80 mesh filter cloth centrifugal filtration to separate yeast and other insoluble matter;

[0025] (3) The filtrate is introduced into the vacuum concentration tank to moderately evaporate and collect alcohol at a temperature below 50°C. The evaporated alcohol and water vapor are about 10% of the original volume;

[...

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PUM

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Abstract

The invention relates to a liquid or powder persimmon tannin derived from a green persimmon and a corresponding separating extracting process thereof. The tannin content is from 2% to 99% in the product of liquid persimmon tannin or powder persimmon tannin, wherein the liquid persimmon tannin is obtained through the processes of persimmon resource selecting, juicing, fermenting, alcohol removing, ageing, purifying, and the like, and the powder persimmon tannin is obtained after the liquid persimmon tannin is dried and crushed. The invention overcomes the defects of the present persimmon tannin products and processes; the treatment is respectively performed according to the characteristics of different components in the persimmon; and the invention provides a series of extracting processes for effectively separating and purifying the persimmon tannin, such as, adopting yeast fermentation for converting sugar in the persimmon juice into alcohol, separating the alcohol through vacuum evaporation, ageing and boosting the persimmon tannin to polymerize into macromolecule, filtering and removing micro-molecular odor matters, such as, acetic acid, and the like. During the production process of the product provided by the invention, no chemical reagent is added; the end product is pure natural persimmon component and can be used as a clarifying agent for beer and wine, an additive of cosmetics, the additive of various deodorants, a sewage treating agent, an absorbing agent for noble metal, and the like; and the market prospect is wide.

Description

technical field [0001] The invention relates to a liquid or powder persimmon tannin derived from green persimmons and a corresponding extraction and separation technology. Background technique [0002] The total annual output of persimmons in the world is about 2.56 million tons, of which 1.83 million tons are produced in my country (FAO, 2005). Due to the unstorable characteristics of persimmons, the fresh eating period is very short, and other deep-processing products of persimmons are limited, such as partially processed persimmons with low added value, persimmon wine, beverages, etc., and a large amount of persimmons are wasted. my country is the origin of persimmons, and there are many different varieties, most of which contain more tannins, resulting in an obvious astringent taste when immature persimmons are eaten. Persimmon is a fruit with the highest tannin content, which is as high as 2% of the fresh weight of persimmon. In addition, persimmons have two fruit dro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/212A23L19/00
Inventor 敖常伟辛国贤凌敏
Owner HEBEI AGRICULTURAL UNIV.
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