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Process for extracting litchi polyphenol from litchi

A technology of litchi polyphenols and litchi, applied in the field of preparation of litchi extract, to achieve the effect of improving production technology, high content and shortening production cycle

Active Publication Date: 2006-02-15
GUILIN NATURAL INGREDIENTS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to overcome the defect in the prior art that there is no single method for extracting litchi polyphenols from litchi skin or litchi core, and to provide a method for extracting litchi polyphenols from litchi. It is a method of extracting polyphenols from lychee skin or lychee core through extraction with solvent, concentration, separation and purification, and drying.

Method used

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  • Process for extracting litchi polyphenol from litchi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] 1) Pre-treatment: crushing litchi cores after sorting and removing impurities;

[0096] 2) Extraction: Mix the raw materials and deionized water in a ratio of 1:3 and put them into the extraction tank, heat to boil and keep the temperature for 2 hours, collect the first extraction material liquid, and add 3 times the amount of deionized water for the second extraction water, heat to boil and keep warm for 2 hours, and collect the second extraction material liquid.

[0097] 3) Concentration under reduced pressure: the extract is introduced into a concentrator for concentration under reduced pressure, the temperature is controlled below 60° C., and the degree of vacuum is controlled above 0.06 MPa.

[0098] 4) Centrifugation: the concentrated extract is centrifuged by a centrifuge.

[0099] 5) The concentrated and centrifuged extract directly enters the macroporous resin column;

[0100] 6) Wash the column with water until the effluent is clear;

[0101] 7) Wash the co...

Embodiment 2

[0106] 1) Pretreatment: crush the lychee skin.

[0107] 2) Extraction: Put qualified raw materials into a clean extraction tank, add 5 times the amount of 65% (v / v) ethanol, and reflux for the first 3 hours of extraction, count from the boiling of the solvent, control the temperature at 80°C, and keep warm until the time is up. Squeeze out the liquid medicine, then add 3 times the amount of 65% (v / v) ethanol for reflux extraction for 2 hours for the second time, and combine the filtrates;

[0108] 3) Recover ethanol: pump the extracted medicinal solution into a concentration tank for concentration under reduced pressure and recover ethanol, the temperature is controlled below 60°C, and the vacuum degree is controlled above 0.06Mpa. After recovering until there is no alcohol smell, the medicine is hydraulically injected into the liquid storage tank;

[0109] 4) Add water, let it stand, and cool it down: the ratio of the medicinal solution to the raw material for recovering eth...

Embodiment 3

[0117] 1) Pre-treatment: mixing and pulverizing litchi skin and litchi core after picking and removing impurities;

[0118] 2) Extraction: Mix qualified raw materials with ethanol with a weight concentration of 70% in a ratio of 1:10, and perform ultrasonic extraction. The extraction conditions are working frequency 60kHz, time 90min, and extraction 2 times;

[0119] 3) Recovery of propanol: pump the extracted medicinal solution into a concentration tank for concentration under reduced pressure and recovery of propanol. The temperature is controlled below 60°C and the vacuum degree is controlled above 0.06Mpa. After recovering until there is no alcohol smell, the medicine is hydraulically injected into the liquid storage tank;

[0120] 4) Add water, let it stand, and cool it down: the ratio of the medicinal solution to the raw material for recovering propanol should be controlled at about 1:3, if it is not enough, add water, let it stand still, and cool it down;

[0121] 5) C...

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Abstract

The invention discloses a process for extracting litchi polyphenol from litchi through dissolvent abstraction, concentrating, separation and purification, and drying, wherein water or low carbon alcohols such as methanol, ethanol, propanol, isopropanol, butanol and amylic alcohol are used as the dissolvent.

Description

technical field [0001] The invention relates to a preparation method of litchi extract, in particular to a method for extracting litchi polyphenols from litchi skin or litchi core. Background technique [0002] Litchi belongs to the fruit of evergreen plants of Sapindaceae, produced in Fujian, Guangdong and Taiwan. According to the analysis and determination of modern medical research, lychee is very nutritious, rich in protein, fat, niacin, citric acid, pectin, calcium, phosphorus, iron, etc. The lychee pulp contains up to 66% glucose, fructose, sucrose and Rich in vitamin C, vitamin B, provitamin A, folic acid, malic acid and a large number of free amino acids. The medicinal value of lychee is also high. The folks in our country regard lychee as a tonic, and Chinese medicine uses lychee as a cure. Li Shizhen recorded in "Compendium of Materia Medica": "Lychee can quench thirst, benefit people's color, improve the mind, improve intelligence, and strengthen Qi", and can c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/77A61P39/06
Inventor 宋云飞孙步祥季永贤汤凌志梁远盛李杰
Owner GUILIN NATURAL INGREDIENTS CORP
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