Method for extracting proanthocyanidin from peanut coats

A technology of peanut clothing and anthocyanin, applied in chemical/physical/physicochemical processes of applied energy, anti-toxins, cardiovascular system diseases, etc., can solve the problems of high maintenance costs, long extraction time, pollution of the environment, etc., and achieve warming Uniform speed, short extraction time, and improved yield

Inactive Publication Date: 2010-01-13
QINGDAO BAOQUAN PEANUTS PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the extraction of proanthocyanidins by organic solvents has the following disadvantages: long extraction time, easily destroyed thermally unstable components, high impurity content and difficult purification, large consumption of extraction solvents, and environmental pollution, etc.
Supercritical extraction technology has the advantages of short extraction time, high purity of the obtained product, and no pollution to the environment. However, this technology has disadvantages such as large one-time investment in equipment and high maintenance costs in production and application.

Method used

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  • Method for extracting proanthocyanidin from peanut coats
  • Method for extracting proanthocyanidin from peanut coats
  • Method for extracting proanthocyanidin from peanut coats

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crush the peanut shells in a grinder, pass through a 40-mesh sieve, add petroleum ether at a ratio of 1:20 (m / v), degrease at 30°C for 5 hours, filter with suction, and remove the residual petroleum ether in the filter residue in a fume hood to obtain degreased Peanut coats, stored in a desiccator for later use. Add the obtained defatted peanut shells to distilled water, the ratio of solid to liquid is 1:10, the microwave power is 200W, the extraction temperature is 20°C, and the extraction time is 30s to extract the proanthocyanidin; then the liquid-material mixture is conventionally vacuum filtered to obtain the extract , the extract is concentrated by vacuum rotary evaporation, ethanol is recovered, and the concentrate is freeze-dried to obtain the obtained product.

Embodiment 2

[0029] Crush the peanut shells in a grinder, pass through a 40-mesh sieve, add petroleum ether at a ratio of 1:20 (m / v), degrease at 30°C for 5 hours, filter with suction, and remove the residual petroleum ether in the filter residue in a fume hood to obtain degreased Peanut coats, stored in a desiccator for later use. Add 20% ethanol to the obtained defatted peanut shells, the ratio of solid to liquid is 1:15, the microwave power is 400W, the extraction temperature is 40°C, and the extraction time is 60s to extract proanthocyanidin; then the liquid-material mixture is conventionally vacuum-filtered to obtain The extract is concentrated by vacuum rotary evaporation, ethanol is recovered, and the concentrate is freeze-dried to obtain the product.

Embodiment 3

[0031] Crush the peanut shells in a grinder, pass through a 40-mesh sieve, add petroleum ether at a ratio of 1:20 (m / v), degrease at 30°C for 5 hours, filter with suction, and remove the residual petroleum ether in the filter residue in a fume hood to obtain degreased Peanut coats, stored in a desiccator for later use. Add 40% ethanol to the obtained defatted peanut shells, the ratio of solid to liquid is 1:20, the microwave power is 600W, the extraction temperature is 40°C, and the extraction time is 120s to extract proanthocyanidin; then the liquid-material mixture is conventionally vacuum filtered to obtain The extract is concentrated by vacuum rotary evaporation, ethanol is recovered, and the concentrate is freeze-dried to obtain the product.

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Abstract

The invention discloses a method for extracting proanthocyanidin from peanut coats, comprising the following steps: heating a solvent and a substrate by using a polarization rotation function of microwaves; and extracting proanthocyanidin from peanut coats. The method for extracting proanthocyanidin from peanut coats uses a modern high and new technology, namely a microwave extracting technology to replace the traditional water bath heating extraction, thereby greatly reducing extracting time, increasing extraction efficiency, achieving high speed, high efficiency and safety and becoming more suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a method for extracting proanthocyanidins from peanut coats, in particular, a method for extracting proanthocyanidins from peanut coats by using a microwave extraction technique, and belongs to the field of traditional Chinese medicines. Background technique [0002] Proanthocyanidins (Proanthocyanidins) is a large class of polyphenolic compounds that widely exist in the plant kingdom, and is a general term for flavan-3-ol derivatives. It is composed of catechin and epicatechin, including dimers, trimers, tetramers, and even decamers. Proanthocyanidins have strong biological activity, can remove excess free radicals in the human body, and have strong antioxidant capacity. grown and used as a safe and non-toxic new natural antioxidant and preservative. [0003] Natural proanthocyanidins widely exist in various plants, such as grapes, hawthorn, ginkgo, rapeseed, peanuts, seabuckthorn, etc., mainly distributed in cores, skins or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62B01J19/12A61P39/06A61P35/00A61P9/00A61P31/00
Inventor 杨庆利张初署禹山林朱凤刘阳潘丽娟
Owner QINGDAO BAOQUAN PEANUTS PRODS
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