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Method for extracting and purifying polyphenol from choerospondias axillaris peel

A technology of jujube and extract, which is applied in the direction of medical formula, medical preparations containing active ingredients, anti-toxins, etc., can solve the problems of poor taste of raw food, waste of resources, environmental pollution, etc., and achieve low environmental pollution and recyclable price , the effect of reducing production costs

Inactive Publication Date: 2013-06-12
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fresh fruit of Southern jujube is sour and astringent. Because of its poor taste when eaten raw, the pulp is generally processed into jujube cakes, fruit juice drinks and other products before eating, and the by-product of processing—the peel, is directly consumed because it cannot be effectively used. are discarded, which not only causes a waste of resources, but also pollutes the environment

Method used

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  • Method for extracting and purifying polyphenol from choerospondias axillaris peel

Examples

Experimental program
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Effect test

Embodiment 1

[0012] Pretreatment: drying the fresh jujube bark in an oven at 50°C, pulverizing it with a pulverizer and passing it through a 60-mesh sieve to obtain the bark bark powder.

[0013] Extraction: Weigh 1 kg of the above-mentioned southern jujube peel powder, and use the ethanol reflux extraction method to extract it, specifically: add 35 L of 55% ethanol aqueous solution, reflux extraction 3 times, the extraction temperature is 60 degrees Celsius, 1 hour each time, and combine after the extraction is completed extract solution, recover the ethanol in the extract solution by rotary evaporation, then use n-hexane extraction to remove non-polar substances in the extract solution, continue rotary evaporation to remove residual n-hexane, centrifuge, and take the supernatant, which is the southern jujube bark Phenol concentrate.

[0014] Purification: adopt HP2MGL type macroporous adsorption resin to purify the concentrated solution of the southern jujube bark obtained above, specifi...

Embodiment 2

[0016] Pretreatment: drying the fresh jujube bark in an oven at 50°C, pulverizing it with a pulverizer and passing it through a 60-mesh sieve to obtain the bark bark powder.

[0017] Extraction: Weigh 1 kg of the above-mentioned southern jujube peel powder, and extract it by ethanol reflux extraction method, specifically: add 30 L of 60% ethanol aqueous solution, reflux extraction 3 times, the extraction temperature is 40 degrees Celsius, 1 hour each time, and combine after the extraction is completed The extract solution is recovered by rotary evaporation to recover the ethanol in the extract solution, and then extracted with n-hexane to remove the non-polar substances in the extract solution. After continuing the rotary evaporation to remove the residual n-hexane, centrifuge and take the supernatant, which is the southern jujube bark. Phenol concentrate.

[0018] Purification: adopt HP2MGL type macroporous adsorption resin to purify the concentrated solution of polyphenols f...

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Abstract

The invention provides a method for extracting and purifying polyphenol from choerospondias axillaris peel, which comprises the following steps: extracting choerospondias axillaris peel polyphenol with ethanol under reflux; after recovering the ethanol from the extracting solution, extracting the obtained choerospondias axillaris peel polyphenol crude extract with n-hexane; removing nonpolar substances in the extracting solution, carrying out rotary evaporation to remove the n-hexane, centrifuging, and purifying the supernatant with an HP2MGL macroporous adsorbent resin; and after feeding the sample, washing with distilled water until the effluent liquid is not turbid, eluting with an ethanol water solution, collecting the eluate, concentrating, and carrying out freeze-drying to obtain the choerospondias axillaris peel polyphenol refined product. The invention has the advantages of simple technique, low cost, small environmental pollution, and high content of the purified choerospondias axillaris peel polyphenol, can easily implement industrial production, reduces the loss of active components, changes the waste choerospondias axillaris peel into valuable substances, and greatly increases the added value and comprehensive utilization ratio of the agricultural product.

Description

technical field [0001] The invention belongs to a method for extracting polyphenols, in particular to a method for extracting and purifying polyphenols with jujube bark dregs. Background technique [0002] Sour jujube is a plant of the genus Sour jujube in the family Anacardiaceae [ Choerospondias axillaris (Roxb. ) Burttet Hill], also known as five-eyed fruit, mountain jujube, mountain vinegar and human face. It is mainly distributed in Hubei, Guangdong, Guangxi, Jiangxi, Fujian and other places. Southern jujube is also distributed in some countries and regions such as India and Indochina Peninsula. Mongolian medicine believes that South Suanzao has the functions of promoting qi and blood circulation, nourishing the heart and calming the nerves, and is used to treat qi stagnation and blood stasis, chest pain, palpitations, shortness of breath, and restlessness. Modern pharmacological studies have proved that Suanzao has a variety of physiological activities, especially o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/22A61P39/06A61P9/06A61P9/10A61P7/02A61P37/04A61P35/00A61K131/00
Inventor 李俶李倩刘成梅刘伟
Owner NANCHANG UNIV
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