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Preparation method of astringent-persimmon dry powder containing persimmon-slag tannin

A technology for persimmon dregs and astringent persimmons, which is applied to the production field of astringent persimmon dry powder, can solve the problems of no persimmon dregs recycling, loss of tannin from persimmon dregs, etc., and achieves the effects of comprehensive tannin composition, good effect and novel combination technology.

Inactive Publication Date: 2013-10-09
GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods only extract and process the persimmon juice after squeezing the persimmon juice, but do not recycle the persimmon residue; all the tannins in the persimmon residue are lost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Choose 3 tons of seven or eight mature astringent persimmons, wash, crush, and squeeze the juice, heat the squeezed juice to about 50°C with a casing heater, put it into a 3-ton sanitary storage tank; weigh 300g of commercial pectinase , 360g of apple amylase, 300g of papain enzyme, activate the enzyme, then add it to a 3-ton sanitary storage tank, stir evenly, and carry out enzymolysis; keep it for 30 minutes, then add 300g of citric acid, 200ml of plant acid for color protection; after 40 minutes of planting, the persimmon juice after enzymatic hydrolysis and color protection was filtered with a plate and frame filter press to obtain filter residue and filtered persimmon juice, and the filtered persimmon juice was sterilized with an ultra-high temperature instantaneous sterilizer (UHT ) to kill enzymes and sterilize, the temperature is controlled at 121-125°C, the sterilized juice is poured into a 3-ton airtight storage tank, and vacuum degassed with a water flow vacuu...

Embodiment 2

[0020] Choose seven or eight mature astringent persimmons, wash, crush, and squeeze the juice to obtain juice and persimmon residue; heat the squeezed juice to about 45°C with a casing heater, take 10kg of astringent persimmon juice; weigh 15g of pectin Enzyme, 10g of apple amylase, 20g of papain enzyme, for enzymatic hydrolysis; after keeping for 35 minutes, add 10g of citric acid and 5ml of phytic acid for color protection; after 20 minutes of color protection, enzymolysis and color protection The filtered persimmon juice is filtered with a small filter press; the filtered persimmon juice is boiled and sterilized to obtain persimmon juice. Filter the raw persimmon juice with a 0.22 μm microfiltration membrane, and then perform the first ultrafiltration with an ultrafiltration membrane with a molecular weight cut-off of 20,000. The ultrafiltration can be eluted with pure water in the later stage; the filtrate after the first ultrafiltration membrane is filtered Then use an ul...

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Abstract

The invention discloses a preparation method of astringent-persimmon dry powder containing persimmon-slag tannin. The preparation method comprises the following steps of: cleaning and juicing persimmons, carrying out enzymolysis and color protection, and filtering so as to obtain raw persimmon juice and persimmon slag; carrying out microfiltration on the raw persimmon juice, carrying out twice ultrafiltration in sequence by using ultrafiltration members with 20000 cutoff-molecular weight and 1000 cutoff-molecular weight, and collecting cut-off liquid after the second-time ultrafiltration; for the persimmon slag, extracting twice at the temperature of 90 DEG C by adopting 90% of methyl alcohol till the material-liquid ratio is (5-10):1; combining extracted liquid, evaporating the extracted liquid to recover the methyl alcohol so as to obtain persimmon-slag paste; adding the persimmon-slag paste into the cut-off liquid after the second-time ultrafiltration so as to obtain the astringent-persimmon dry powder by freezing and drying. The preparation method disclosed by the invention has the advantages that the obtained concentrated liquid and the obtained persimmon-slag paste are mixed, and the astringent-persimmon dry powder obtained by freezing and drying contains multiple persimmon-slag tannin components including tannin with poor water solubility; the astringent-persimmon dry powder is comprehensive in health-care effects such as oxidation resistance, good in comprehensive effect and low in cost and can be used for manufacturing health-care products.

Description

technical field [0001] The invention belongs to the field of plant extraction, and in particular relates to a production method of dried astringent persimmon powder. Background technique [0002] Astringent persimmon fruit, also known as red fruit, is a fruit with high nutritional value. It enjoys the reputation of "sacred fruit among fruits". It is widely planted in my country and is an important way for farmers to increase their income. Astringent persimmon fruit contains about 2.0% tannins, as well as carbohydrates, proteins, essential amino acids, vitamins, organic acids, and trace elements, which can inhibit human lymphocytic leukemia, lower blood pressure, remove free radicals in the body, and absorb rare metals. Elements and many other effects. In fresh green fruits, small molecule tannins (molecular weight 1700) are relatively high, and condensed tannins (molecular weight 10000-15000) are relatively low. The water solubility of astringent persimmon tannins with diff...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L19/00
Inventor 李典鹏李桂银周治德
Owner GUANGXI INST OF BOTANY THE CHINESE ACAD OF SCI
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