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Separation and extraction process of oligomer proanthocyanidin from pine bark

A technology of proanthocyanidins and oligomers, which is applied in the direction of organic chemistry, can solve the problems of inability to remove high-polymer proanthocyanidins, low content of functional ingredients OPC, high content of high-polymer proanthocyanidins, and achieve stable product quality indicators and product extraction yield. The effect of improving efficiency and quality, and high extraction rate

Inactive Publication Date: 2003-08-20
GUILIN NATURAL INGREDIENTS CORP
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Problems solved by technology

[0003] But for a long time, in the pine bark extraction process, the high polymer proanthocyanidins (PPC) in the proanthocyanidins has been unable to be removed, and the content of high polymer proanthocyanidins (ProcyanidcicPolymenrs for short PPC) in the pine bark extract is relatively high
At present, there are relatively few researches on pine bark extract technology in foreign countries. Other domestic manufacturers mainly adopt traditional solvent extraction methods and resin separation methods in the extraction technology. The content of OPC in the products produced by these methods is very low, usually Only about 40%, the content of PPC is too high, which directly affects the quality of the product and reduces the use effect of the product
And the yield of traditional solvent extraction is low

Method used

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Embodiment Construction

[0030] The following are non-limiting examples of the invention:

[0031] 1) Pre-treatment: Throw the pine bark into the extractor and wash it with deionized water.

[0032] 2) Extraction: add 8 times the amount of water, control the temperature at 80 degrees centigrade and dynamically extract twice, each time for 6 hours, and combine the filtrates.

[0033] 3) Concentrating and recovering the solvent: the extract is introduced into a concentrator for recovery under reduced pressure, the temperature is controlled at 70 degrees Celsius, the vacuum degree is controlled above 0.07, and the amount of the concentrated solution is controlled at a ratio of 1:2 to the raw material.

[0034] 4) Solid-liquid separation: The concentrated solution is subjected to solid-liquid separation with a high-speed centrifuge.

[0035] 5) Concentration: Concentrate the medicinal solution after centrifugation, control the temperature below 60 degrees Celsius and control the vacuum degree above 0.08,...

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Abstract

The separation and extraction process of oligomer proanthocyanidin from pine bark includes the steps of: pre-treatment, extraction, recovering solvent, concentration, solid-liquid separation, concentration, counter current extraction, concentration, drying, sterilizing and packing. During the extraction, water and ethyl acetate are used as solvent. The said process has high extraction rate, low cost, high product yield and quality, product OPC content as high as 95%. The product of the present inventino has high solubility in both water and alcohol, bright color and obvious curative effect.

Description

(1) Technical field: [0001] The invention relates to a method for extracting active ingredients from plants, in particular to a method for extracting oligomer proanthocyanidins from pine bark. (two) background technology: [0002] With the rise of natural medicines, the research on active ingredients in plants has become more and more in-depth, and the technology of plant extraction industry has gradually matured. Extracting high-value active ingredients from common plants has become one of the hotspots that people care about. In recent years, a new type of high-efficiency antioxidant, pine bark extract——oligomeric proanthocyanidins (OPC) has become popular in the European market and has become one of the top ten best-selling natural plant extracts in the United States. It is mainly used as a raw material for health food and directly made into capsules, etc. Dosage form or added to beverages and common foods as a natural functional ingredient with strong antioxidant properti...

Claims

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Application Information

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IPC IPC(8): C07D311/62
Inventor 宋云飞季永贤李文慧李杰文继承黄梦兰
Owner GUILIN NATURAL INGREDIENTS CORP
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