Method for continuous extraction of polyphenol and amygdalin in loquat nuts

The technology of loquat pit and amygdalin is applied in the directions of chemical instruments and methods, pharmaceutical formulations, non-central pain relievers, etc., and can solve the problems of cumbersome process, long time consumption, etc., and achieve the effect of simple process

Inactive Publication Date: 2016-11-16
FUJIAN NORMAL UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the existing methods for extracting biologically active substances in loquat stones that only extract one type of substance, and the extraction and separation are time-consuming and cumbersome, the purpose of the present invention is to provide a kind of polyphenols and bitter almonds in loquat stones. The continuous extraction method of glycosides integrates separation and purification, and simultaneously obtains high-purity polyphenols and amygdalin

Method used

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  • Method for continuous extraction of polyphenol and amygdalin in loquat nuts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 :

[0031] 1) Add 100 g of 100-200 mesh silica gel in the separation and purification chamber 6 of the extraction device;

[0032] 2) Take the fresh loquat stone produced in Yunxiao, Zhangzhou as raw material, wash with water, air-dry, and crush to get the loquat stone powder through a 20-30 mesh sieve, and place 100 g of the loquat stone powder in the component extraction reaction chamber 4 of the extraction device ;

[0033] 3) Inject 500g of dimethyl carbonate and ethanol mixture (weight ratio 1:1) into the solvent pool 14 through the solvent addition pipe 11, feed steam to heat the water bath heating pool 13 to reflux, stir, and start to extract polyphenols Substances; heating and circulating under reflux for extraction for 3 hours, and then releasing the extract from the solvent pool 14 to obtain polyphenol extracts;

[0034] 4) Inject 500 g of 60% ethanol aqueous solution into the solvent pool 14 through the solvent addition pipe 11, heat and circu...

Embodiment 2

[0038] see figure 1 :

[0039] 1) Add 200g of 100-200 mesh silica gel in the separation and purification chamber 6 of the extraction device;

[0040] 2) Take the fresh loquat stone produced in Yunxiao, Zhangzhou as raw material, wash, air-dry, and crush to obtain loquat stone powder through a 20-30 mesh sieve, and place 300 g of loquat stone powder in the component extraction reaction chamber 4 of the extraction device ;

[0041]3) Inject 500g of dimethyl carbonate and ethanol mixture (weight ratio 9:1) into the solvent pool 14 through the solvent addition pipe 11, feed steam to heat the water bath heating pool 13 to reflux, stir, and start to extract polyphenols Substance; after heating and circulating reflux for extraction for 1 hour, add 50 g of ethanol to the solvent pool, continue to heat and reflux for 2.5 hours, then release the extract from the solvent pool 14 to obtain a polyphenol extract;

[0042] 4) Inject 1200 g of 50% ethanol aqueous solution into the solvent ...

Embodiment 3

[0046] 1) Add 200g of 100-200 mesh silica gel in the separation and purification chamber 6 of the extraction device;

[0047] 2) Take the fresh loquat stone produced in Yunxiao, Zhangzhou as raw material, wash, air-dry, and crush to obtain loquat stone powder through a 20-30 mesh sieve, and place 300 g of loquat stone powder in the component extraction reaction chamber 4 of the extraction device ; 2a) Inject 400g of petroleum ether into the solvent pool 14 through the solvent addition pipe 11, and after reflux and stirring for 2 hours, discard the extract in the solvent pool;

[0048] 3) Inject 500g of dimethyl carbonate and ethanol mixture (weight ratio 9:1) into the solvent pool 14 through the solvent addition pipe 11, feed steam to heat the water bath heating pool 13 to reflux, stir, and start to extract polyphenols Substance; after heating and circulating reflux for extraction for 1 hour, add 50 g of ethanol to the solvent pool, continue to heat and reflux for 2.5 hours, t...

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Abstract

The invention discloses a method for continuous extraction of polyphenol and amygdalin in loquat nuts and relates to the field of extraction and separation of natural products. The method comprises the steps of adding silica gel into a separation and purification chamber of an extraction device in advance; placing loquat nut powder in a component extraction reaction chamber, adding a dimethyl carbonate and ethyl alcohol mixed solvent into a solvent tank, and conducting heating and stirring backflow so as to achieve polyphenol extraction, wherein the weight of the mixed solvent is 4-8 times that of the loquat nut powder; discharging extracting solution out of the solvent tank to obtain polyphenol extracting solution; injecting 40-90% ethanol water into the solvent tank, and continuing heating and stirring backflow so as to achieve amygdalin extraction, wherein the weight of the ethanol water is 3-9 times that of the loquat nut powder; discharging extracting solution out of the solvent tank to obtain amygdalin extracting solution. Polyphenol extraction and amygdalin extraction are conducted in sequence, separation and purification are integrated, technology is simple, and purify is high.

Description

technical field [0001] The invention relates to the field of extraction and separation of natural products, in particular to a continuous extraction method for polyphenols and amygdalin in loquat fruit cores. Background technique [0002] Loquat, also known as Luju, Jinwan, and Luzhi, is a genus of the subfamily of Apple in the Rosaceae. It is an evergreen small tree. It is named for its fruit shaped like a pipa. "The crown of fruit". Loquat has rich nutritional value and high medical value. The fruit, seeds, flowers and leaves of loquat can be used as medicine. China is the most important producer of loquat. The main producing areas are Jiangsu, Fujian and Zhejiang. The cultivated area and output account for more than 2 / 3 of the world. After the pulp is eaten fresh or processed, the core is generally thrown away as waste. , and the loquat core accounts for about 20% of the fresh weight of the whole loquat, so the discarding of the loquat core is a waste of resources. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/18C07H1/08C07G99/00A61K36/73A61P37/02A61P29/00A61P39/06A61P3/10
CPCA61K36/73C07H1/08C07H15/18C07G99/00
Inventor 杨发福郭红玉朱明光张筱逸李勇军
Owner FUJIAN NORMAL UNIV
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