Method for extracting proanthocyanidin from pine bark by taking water as solvent

A technology of proanthocyanidins and pine bark, applied in the direction of organic chemistry, etc., can solve the problems of poor product safety, high production cost, complicated extraction process, etc., and achieve the effects of less loss, no chemical residue, and high extraction efficiency.
CN101701013AInactive Publication Date: 2010-05-05INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Publication Date
2010-05-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for extracting proanthocyanidin from pine bark by taking water as solvent. The method takes the pine bark as raw material and water as extraction solvent, utilizes ultrasonic wave technology for enhanced extraction to obtain proanthocyanidin leach liquor, uses the membrane separation technology of microfiltration for removing impurities, ultrafiltration purification and nanofiltration concentration for processing to obtain concentrated proanthocyanidin liquid, and finally obtains the proanthocyanidin product by vacuum or freeze drying. The method only takes the water as the extraction solvent, and utilizes the ultrasonic wave extraction technology and the membrane separation technology, so as to lead the whole technical process to be operated under the low temperature condition, thus not only effectively improving the extraction yield of active ingredients and ensuring bioactive substances not to be damaged, but also being safe and environment-friendly in production and having no residual chemical solvent on the product. Therefore, the proanthocyanidin is a natural and green product in the true sense, and the production method is very environment-friendly.
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Description

technical field

[0001] The invention relates to a method for extracting proanthocyanidins from pine bark, in particular to a method for extracting and separating proanthocyanidins from pine bark by using ultrasonic extraction technology and membrane separation technology, belonging to the technical field of natural product extraction. technical background

[0002] Proanthocyanidins are polyphenolic compounds widely present in the plant kingdom, and are flavan-3-ol polymers formed by catechin or epicatechin through C-C bonds. Proanthocyanidin is a new type of high-efficiency antioxidant. Its antioxidant activity is 20 times that of vitamin C and 50 times that of vitamin E. It is the most powerful free radical scavenger found so far. It has direct or indirect effects on more than 70 diseases. It has a wide range of uses in medicine, food, health care, cosmetics and other fields. Pine bark is an important resource of proanthocyanidins, the source of raw materials is abundant, ...

Claims

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