Method for extracting amygdalin from loquat cores by adopting supercritical CO2 extraction

A carbon dioxide, amygdalin technology, applied in chemical instruments and methods, organic chemistry, bulk chemical production, etc., to achieve the effect of short time, reduced cost and good quality

Inactive Publication Date: 2014-11-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the low extraction efficiency of amygdalin in the loquat core extracted by the prior art, the extraction product has low purity and the shortcomings of harmful solvent residues, the invention provides a supercritical Method for carbon dioxide extraction of amygdalin in loquat core

Method used

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  • Method for extracting amygdalin from loquat cores by adopting supercritical CO2 extraction
  • Method for extracting amygdalin from loquat cores by adopting supercritical CO2 extraction

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Embodiment

[0027] The loquat cores are selected to remove impurities, washed with water, dried, crushed, passed through a 10-30 mesh sieve, and the powder is taken.

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Abstract

The invention relates to a method for extracting amygdalin from loquat cores by adopting supercritical CO2 extraction. The method comprises the following specific steps: grinding the loquat cores into loquat core powder; and performing supercritical CO2 extraction by taking absolute ethanol as an entrainer, wherein the amygdalin yield reaches more than 2.68% under the optimized conditions. Due to absolute ethanol taken as the entrainer, the selectivity and solubility of the amygdalin in the loquat cores in a supercritical fluid can be influenced; by virtue of the solubility difference of amygdalin and impurities such as protein and polysaccharide in the loquat cores in the ethanol entrainer, the alcohol-soluble amygdalin is pointedly extracted out and the extraction efficiency is high; an obtained amygdalin product is high in purity, free of harmful solvent residues and good in quality. The method is simple in process, low in cost and easy for industrial production.

Description

technical field [0001] The invention belongs to the field of natural product extraction, in particular to a method for extracting amygdalin from loquat kernels. Background of the invention [0002] Amygdalin is a cyanogenic glycoside, which consists of 2 units of glucose, 1 unit of oxycyanic acid and 1 unit of benzoic acid, and its molecular formula is C 2 h 27 NO 11 , is the main component of traditional Chinese medicine bitter almond, and widely exists in bitter almond, peach, nectarine, loquat, plum, apple, black cherry and other nuts and leaves. In recent years, studies have found that amygdalin can be used to treat a variety of diseases, including anti-tumor, kidney disease, cough and asthma, etc. Laetrile has great application potential in medicine. [0003] Laetrile is one of the main medicinal ingredients in loquat fruit. The content of amygdalin in the loquat fruit is highest in the seed kernel, which is significantly higher than that in the seed coat, fruit st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/18C07H1/08
CPCY02P20/54
Inventor 庞敏何曙剑操丽丽姜绍通
Owner HEFEI UNIV OF TECH
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