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Method for extracting fresh ginger polyphenol from fresh ginger

A technology of crushing and extracting ginger, which is applied in the direction of medical formulas, medical preparations containing active ingredients, plant raw materials, etc., can solve the problems of polyphenol activity loss, short storage period, and long preparation process, so as to achieve no harmful substance residue, The effect of stable quality and simple process

Inactive Publication Date: 2013-12-11
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the extraction temperature of the reflux method is too high, because polyphenols are thermally unstable components, which will cause the loss of polyphenol activity; the products extracted by the pressing method are unstable and have a short shelf life; the supercritical extraction method can simultaneously obtain the volatile components of ginger. And gingerol, the composition is relatively complex, the content of gingerol is not high, it is not conducive to the subsequent separation, and the popularization is limited due to expensive equipment
In summary, the existing preparation process has long preparation process, cumbersome operation, low product yield, and is not suitable for large-scale industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: take fresh ginger as raw material, clean with warm water, cut into fragments of 1.0mm and pulverize with plant tissue fragmentation extraction method, wherein add 75% ethanol solution of 3 times of weight ratio of ginger, extraction time is 1.0min, rotating speed is 2000r / min; add 75% ethanol with 18 times the weight ratio of ginger to the above mixture, ultrasonically extract for 90min, and the extraction temperature is 70°C; centrifuge to take the supernatant, and use 4BV of macroporous adsorption resin to absorb, first use 4BV of Eluted with water, and then eluted with 6BV of 75% ethanol; the eluate was concentrated and dried to obtain a powdered extract containing 88.4% gingerols.

Embodiment 2

[0015] Embodiment 2: take fresh ginger as raw material, clean with warm water, cut into 2.0mm pieces and pulverize with plant tissue fragmentation extraction method, wherein add 80% ethanol solution of 4 times of weight ratio of ginger, extraction time is 1.5min, rotating speed is 1500r / min; Add ginger 15 times the weight ratio of 70% ethanol to the above mixture, ultrasonically extract for 80min, the extraction temperature is 65°C; centrifuge to take the supernatant, use 3BV macroporous adsorption resin to absorb, first use 5BV Eluted with water, and then eluted with 4BV of 80% ethanol; the eluate was concentrated and dried to obtain a powdered extract containing 85.6% gingerols.

Embodiment 3

[0016] Embodiment 3: take fresh ginger as raw material, clean with warm water, cut into fragments of 0.5mm and pulverize with plant tissue fragmentation extraction method, wherein add 70% ethanol solution of 2 times of weight ratio of ginger, extraction time is 0.5min, rotating speed is 2500r / min; add 80% ethanol with 16 times the weight ratio of ginger to the above mixture, ultrasonically extract for 60min, and the extraction temperature is 75°C; centrifuge to take the supernatant, and use 2BV of macroporous adsorption resin for adsorption, first use 6BV of Eluted with water, and then eluted with 5BV of 70% ethanol; the eluate was concentrated and dried to obtain a powdered extract containing 86.2% gingerols.

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Abstract

The invention relates to a method for extracting fresh ginger polyphenol from fresh ginger, and specifically relates to a method for extracting fresh ginger polyphenol from fresh ginger by ultrasonic wave. The method comprises the following steps: crushing fresh ginger by a plant tissue breaking method; extracting by an ultrasonic wave method; purifying by macroporous resin; and concentrating and drying. The extraction rate and purity of fresh ginger polyphenol in fresh ginger are improved by the combined steps which are mild in treatment condition and less in loss on effective components, and the novel method is simple and convenient, easy to operate and low in cost, and is suitable for industrial production on a large scale.

Description

technical field [0001] The invention relates to an extraction technology of active ingredients in natural medicinal plants, in particular to a method combining plant tissue crushing and ultrasonic extraction. Background technique [0002] Ginger is a perennial herb of Zingiberaceae Zingiberaceae. It is an important spice seasoning in the world and a traditional medicinal and edible plant in Asia. And stomach anti-vomiting and other effects. Modern pharmacological research shows that ginger has the functions of promoting the secretion of digestive juice, protecting the liver and gallbladder, lowering blood sugar, lowering blood fat, anti-oxidation, anti-aging, anti-tumor, anti-inflammatory, anti-microbial, anti-radiation, and cardiovascular protection. It is by far the most important rhizome spice in international trade. The world trade volume exceeds 20,000 tons, and my country's annual export volume accounts for more than 40% of the world's total export volume. Its main a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/9068A61K125/00
Inventor 苏刘花
Owner NANJING ZELANG AGRI DEV
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