Method for extracting myricetin by hovenia dulcis thunb

A technology of hovenia dulcis and myricetin, applied in the direction of organic chemistry, etc., can solve the problems of low extraction rate, low purity, increasing myricetin, etc.

Active Publication Date: 2014-09-03
陕西功能食品工程中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to increase the source of extracting myricetin from natural plants, solve

Method used

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  • Method for extracting myricetin by hovenia dulcis thunb
  • Method for extracting myricetin by hovenia dulcis thunb
  • Method for extracting myricetin by hovenia dulcis thunb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Example 1: Extracting myricetin from Hovenia dulcis

[0098] The implementation steps of this embodiment are as follows:

[0099] A. Hovenia dulcis seed extract

[0100] The Fructus Hoveniae Fructus sold by Bozhou Baohua Pharmaceutical Co., Ltd. is cleaned, dried, crushed and sieved again to obtain 80 mesh Fructus Fructus Fructus Hoveniae Fructus powder, and then according to the weight ratio of Fructus Fructus Fructus Fructus Fructus Fructus and monohydric alcohol aqueous solution 1:6, in Concentration is in the methanol monohydric alcohol aqueous solution of 60% by volume, soak 40min at room temperature, then in the microwave equipment that is sold by Shanghai Longyu Microwave Equipment Co., Ltd. under the trade name LY3-10L Microwave Extraction Tester at a temperature of 75 ℃ and microwave Microwave extraction under the condition of power 300W 3 times, 10min each time, thus obtain a Hovenia dulcis fruit extract;

[0101] B. Concentration of the extract

[0102] Le...

Embodiment 2

[0111] Example 2: Extracting myricetin from Hovenia dulcis

[0112] The implementation steps of this embodiment are as follows:

[0113] A. Hovenia dulcis seed extract

[0114] Wash and dry Hovenia dulcis seeds sold by Bozhou Baohua Pharmaceutical Co., Ltd., then crush and sieve to obtain 80-100 mesh Hovenia dulcis seeds powder, and then according to the weight ratio of Hovenia dulcis seeds powder to monohydric alcohol aqueous solution 1:12 , soaking at room temperature for 50 min at a concentration of 40% by volume in ethanol aqueous solution, and then in a microwave equipment sold under the trade name PZ-TQ1 microwave extractor by Shanghai Pangzhe Microwave Equipment Co., Ltd. at a temperature of 60 ° C and microwave Under the condition of power 200W, microwave extraction was carried out 4 times, each time for 5 minutes, so that an extract of Hovenia dulcis was obtained;

[0115] B. Concentration of the extract

[0116] Let the Hovenia dulcis fruit extract obtained in ste...

Embodiment 3

[0125] Example 3: Extracting myricetin from Hovenia dulcis

[0126] The implementation steps of this embodiment are as follows:

[0127] A. Hovenia dulcis seed extract

[0128] Wash and dry Hovenia dulcis seeds sold by Bozhou Baohua Pharmaceutical Co., Ltd., then crush and sieve to obtain 80-100 mesh Hovenia dulcis seeds powder, and then according to the weight ratio of Hovenia dulcis seeds powder to monohydric alcohol aqueous solution 1:8 , soaking at room temperature for 30 min in a 50% propanol aqueous solution by volume, and then at a temperature of 80° C. Under the condition of microwave power 400W, microwave extraction was carried out twice, each time for 20 minutes, so that an extract of Hovenia dulcis was obtained;

[0129] B. Concentration of the extract

[0130] Let the Hovenia dulcis fruit extract obtained in step A be concentrated under reduced pressure at a pressure of -0.06 MPa and a temperature of 45° C. to obtain a concentrated solution with a density of 1.1...

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Abstract

The invention relates to a method extracting myricetin by hovenia dulcis thumb, which comprises the steps of hovenia dulcis thunb extraction, extract concentration, resin adsorption and separation, silica gel column purification and recrystallization. Compared with prior art, the extraction method is carried out by medicinal material pretreatment, microwave extraction, the extraction rate by the microwave extraction is obvious higher than that of other extraction methods, and the myricetin with high purity (purity is greater than or equal to 99.8%) can be finally obtained through resin separation and the silica gel column purification, and the extraction rate can reach 95%. The invention provides the effective method for extracting a lot of myricetin by hovenia dulcis thumb.

Description

【Technical field】 [0001] The invention relates to the technical field of traditional Chinese medicine. More specifically, the present invention relates to a method for extracting myricetin from Hovenia dulcis. 【Background technique】 [0002] Hovenia acerba Lindl. is the dry and mature seed of Hovenia acerba Lindl. in the Rhamnaceae family. Hovenia acerba Lindl. Longevity fruit, orange twister, etc. are mainly distributed in China, North Korea, Japan and India, and are scattered in most provinces of my country. Hovenia dulcis is sweet in nature and has the effects of protecting the liver and relieving alcohol, clearing away heat and diuresis, quenching thirst and relieving restlessness. It is commonly used in the folks to treat alcoholism, restlessness, thirst, vomiting, and constipation. It is often used at home and abroad as a remedy Alcoholic drinks and health food to prevent hepatitis. At present, there are few studies on the chemical constituents of Hovenia dulcis Fruc...

Claims

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Application Information

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IPC IPC(8): C07D311/30C07D311/40
CPCC07D311/30C07D311/40
Inventor 孟永宏赵华国魏丽娜牛永洁杨敏
Owner 陕西功能食品工程中心有限公司
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