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New method for picking-up purified resveratrol from giant knotweed

A technology of resveratrol and a new method, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as large amount of organic solvent, existence of industrialized production, complicated operation conditions, etc., and achieve simple equipment, The effect of improving the utilization rate and simple process

Inactive Publication Date: 2007-06-20
洪立芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above, it can be seen that the existing process for extracting resveratrol has problems such as high preparation cost, high requirements for equipment, complicated operating conditions, large amount of organic solvent in some methods, and potential safety hazards in industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Get dry Polygonum cuspidatum medicinal material, pulverize, sieve, take by weighing 500g, add appropriate amount of water and warm soak (temperature is controlled at 25 ℃) 18 hours, filter, add water to 2500ml in filtrate, filter residue reflux extraction 6 hours, filter; Add 1000ml of water to reflux and extract for 4 hours, filter; add 500ml of water to extract for 2 hours, combine the filtrate, add 2% dilute acid and hydrolyze for 5 hours at 40°C, cool; The pre-treated macroporous adsorption resin column is used for adsorption and separation, then eluted with water, and then gradient eluted with water and ethanol system, followed by thin-layer chromatography for detection, and the eluate from the resveratrol section is collected, concentrated and removed under reduced pressure. Add ethanol, add 0.05g of activated carbon to extract under reflux for 20 minutes, filter with suction, dry in vacuum for 5 hours, and pulverize to obtain 0.39g of the target prod...

Embodiment 2

[0012] Embodiment 2: Get the dry Polygonum cuspidatum medicinal material, pulverize, sieve, take by weighing 500g, add appropriate amount of water and soak (temperature is controlled at 30 ℃) for 36 hours, filter, add water to the filtrate to 3500ml, reflux and extract the filter residue for 6 hours, filter; Add 2000ml of water to reflux and extract for 4 hours, filter; add 1500ml of water to extract for 2 hours, combine the filtrate, add 2% dilute acid, hydrolyze at 40°C for 7 hours, cool; the hydrolyzate is 1.5BV / h Adsorbed and separated on a pre-treated macroporous adsorption resin column, then eluted with water, and then carried out gradient elution with water and ethanol system, tracked and detected by thin-layer chromatography, collected the eluate from the resveratrol segment, concentrated under reduced pressure Remove ethanol, add 0.10 g of activated carbon to extract under reflux for 20 minutes, filter with suction, dry in vacuum for 5 hours, and pulverize to obtain 0....

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PUM

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Abstract

A process for extracting purified resveratrol from giant knotweed rhizome includes such steps as extracting resveratrol aglycon, concentrating by acid-catalytic hydrolyzing reaction, purifying by macroreticular resin column, eluting by water and alcohol, and examining by thin-layer chromatography.

Description

technical field [0001] The invention relates to a new method for extracting and purifying resveratrol from Polygonum cuspidatum. Background technique [0002] Resveratrol (Res for short), the chemical name is 3,4',5-trihydroxystilbene, has important physiological activities such as anti-cancer, anti-aging, and anti-platelet aggregation. Mainly found in grapes, knotweed, hellebore and other plants. Studies have found that the content of resveratrol and its resveratrol glycosides in Polygonum cuspidatum and grapes is the highest. [0003] At present, the methods for extracting resveratrol from Polygonum cuspidatum contained in reports mainly include organic solvent extraction, compound enzyme extraction and supercritical CO 2 Extract etc. The technical scheme disclosed in the patent with the publication number CN1621401A titled "A Method for Extracting High-Purity Resveratrol from Polygonum cuspidatum" is: add a certain amount of organic solvent to reflux the pretreated rhi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C37/68C07C39/21A61P35/00A61P7/02
Inventor 余淑娴郑湘娟洪三国罗冬梅陈丽萍
Owner 洪立芝
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