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Low temperature proanthocyanidin extracting process from grape seed

An extraction method, grape seed technology, applied in the field of extraction of proanthocyanidins in plants, can solve the problems of high cost and poor safety of the extraction process, and achieve the effects of low cost, easy industrial production, and good yield

Inactive Publication Date: 2004-06-23
沈阳中科药业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various functional foods and medicines have been developed abroad. The extraction methods use ethyl acetate method, ethanol extraction method, etc. The disadvantages are that the extraction process is poor in safety and high in cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0013] Take 1000g of grape seeds, use methanol, n-butanol, and hydrochloric acid mixed solution 1000ml to extract three times respectively, filter, recover the filtrate, extract with chloroform n-butanol mixed solution, recover methanol and n-butanol, settle the water liquid at low temperature, dry, and obtain the finished product of proanthocyanidins; The experimental conditions and results are shown in Table 1 below.

[0014] Preface

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PUM

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Abstract

The present invention relates to the extraction of proanthocyanidin from plant material, and is especially the low temperature extraction of proanthocyanidin from grape seed. Grape seed as material is extracted with the mixed solution of methanol, normal butyl alcohol and hydrochloric acid; concentrated hydrochloric acid is added to reach the acid concentration of 0.1-0.8 wt%; and through filtering, recovering methanol and normal butyl alcohol, extraction with chloroform and normal butyl alcohol, recovering chloroform and normal butyl alcohol, low temperature deposition of the water solution at -20 deg.c to 0 deg.c and drying, the product is obtained. The present invention has the advantages of low organic solvent consumption, low cost, high safety, high product purity and yield, and simple technological process suitable for industrial production.

Description

technical field [0001] The invention relates to the extraction of proanthocyanidins in plants, in particular to a low-temperature extraction method for proanthocyanidins in grape seeds. Background technique [0002] Proanthocyanidins are polymers of flavonoids such as flavan-3,4 diols and flavanols, and most plants contain proanthocyanidins. However, plants such as pine bark, grape seed, and lemon bark contain more; these compounds, especially oligomeric proanthocyanidins (opc), can significantly improve the anti-aging ability of the body and improve heart function by removing excess free radicals in the body. Enhance the ability of the human body to resist allergies; pharmacological experiments show that it has a strong inhibitory effect on diseases such as arteriosclerosis, gastric ulcer, colon cancer, cataract, and diabetes complications; the antioxidant capacity of proanthocyanidins is 200 times that of vitamin C, and that of vitamin E 50 times, it is the natural antiox...

Claims

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Application Information

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IPC IPC(8): C07D311/62C07D493/18
Inventor 傅星王世成
Owner 沈阳中科药业有限责任公司
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