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Production technology for extracting and purifying polydatin from polygonum cuspidatum

A production process, the technology of polydatin, which is applied in the field of extraction and purification of polydatin, can solve the problems of complicated procedures, high cost, and low purity

Inactive Publication Date: 2014-04-30
湘西自治州奥瑞克医药化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing production process for extracting and purifying polydatin from Polygonum cuspidatum is complicated or has low purity and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example

[0018] Take fresh Polygonum cuspidatum and dry it until the moisture content is 30%, then crush it. Weigh 800 kg into a multi-functional extraction tank, add 2000L of ethanol with a concentration of 95% (V / V), and extract twice under dynamic stirring at 50°C, each time for 2 hours. Concentrate the extract to 400L, let it cool to room temperature, and filter it with a 400-mesh filter cloth. The filtrate passes through a neutral alumina column with diameter: height = 60cm: 90cm, removes impurities by adsorption, collects the effluent from the upper column, and concentrates to no alcohol Let it cool to room temperature for crystallization after tasting, and obtain 11.3 kg of rough crystals of polydatin in flake or powder form. Heat the crude crystals with 200L of 40% ethanol (V / V) to 50°C, add 1.2 kg of activated carbon to decolorize for 30 minutes after being completely dissolved, and filter with suction. Let the filtrate cool to room temperature and crystallize for 4 hours, the...

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Abstract

The invention relates to a production technology for extracting and purifying polydatin from polygonum cuspidatum. The production technology comprises the steps of drying and crushing fresh polygonum cuspidatum roots and stems, carrying out warm immersion extraction with ethanol, and concentrating an extracting solution to one tenth of the original volume; cooling a concentrate to room temperature and then filtering solid impurities; enabling filtrate to flow through a neutral alumina short and thick column, collecting upper-column effluent, concentrating to be alcohol-free, chilling to room temperature and crystallizing, carrying out suction filtration to obtain macro polydatin crystal; crystallizing the macro polydatin crystal with a proper amount of ethanol, crystallizing and drying to obtain the polydatin. The production technology is simple and convenient to operate, and high in the purity of the extract.

Description

technical field [0001] The invention relates to a production process for extracting and purifying polydatin from Polygonum cuspidatum. Background technique [0002] Polydatin (Polydatin) is also known as spruce new glycoside, resveratrol glycoside. It mainly comes from the rhizome and root of Polygonum cuspidatum. It is white needle crystal or powder, easily soluble in methanol and ethanol, slightly soluble in water and ethyl acetate. Antibacterial, scavenging free radicals, regulating blood lipids, lowering cholesterol, and can treat myocardial ischemia, cerebral ischemia, shock and other cardiovascular and cerebrovascular diseases. [0003] The existing production process for extracting and purifying polydatin from Polygonum cuspidatum has complicated procedures or low purity and high cost. Contents of the invention [0004] The object of the present invention is to provide a production process for extracting and purifying polydatin from Polygonum cuspidatum rhizomes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/203C07H1/08
Inventor 胡灿华李灵玉
Owner 湘西自治州奥瑞克医药化工有限责任公司
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