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A production process 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: 2016-04-06
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

[0016] Take fresh Polygonum cuspidatum and dry it until the moisture content is 30%, then crush it. Weigh 800 kg into a multifunctional extraction tank, add 2000L of 95% (V / V) ethanol, and extract twice with dynamic stirring at 50°C, each time taking 2 hours. The extract was concentrated to 400L, cooled to room temperature and filtered with a 400 mesh filter cloth. The filtrate was passed through a neutral alumina column of diameter: height=60cm:90cm to remove impurities by adsorption, and the effluent from the upper column was collected and concentrated to alcohol-free After the taste, it was allowed to cool to room temperature to crystallize, and 11.3 kg of flake or powdered polydatin was obtained. 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 they are completely dissolved, filter with suction, and let the filtrate cool to room temperature to crystallize for 4 hours and filter with suction. A...

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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 new spruce glycoside, resveratrol glycoside. It is mainly derived from the rhizomes and roots of Polygonum cuspidatum. It is white needle-like crystal or powder, soluble in methanol and ethanol, slightly soluble in water and ethyl acetate. It can be antibacterial, scavenge free radicals, regulate blood lipids, lower 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. Summary of the invention [0004] The purpose of the present invention is to provide a production process for extracting and purifying polydatin from Polygonum cuspidatum rhizome wit...

Claims

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Application Information

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Patent Type & Authority Patents(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