Method for simultaneously separating and purifying punicalagin and gallic acid from pomegranate rind

A technology for the simultaneous separation of punicalagin, applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, preparation of sugar derivatives, etc.

Pending Publication Date: 2017-07-25
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the patent search and domestic and foreign papers review, there is no method and report for simultaneously extracting punicalagin and gallic acid from pomegranate peel raw materials. Therefore, in order to maximize the raw material value of pomegranate peel, it is necessary to develop a simultaneous Process for separating and purifying punicalagin and gallic acid from pomegranate peel

Method used

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  • Method for simultaneously separating and purifying punicalagin and gallic acid from pomegranate rind

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Yunnan Mengzi pomegranate peel raw material (the water content of the pomegranate peel raw material is less than 10%, the content of punicalagin is 5.2%, and the content of gallic acid is 1.1%) is pulverized by a grinder; 100 kg of the crushed pomegranate peel raw material is moved into 1 Add 500L of methanol with a concentration of 50% (V / V) to a cubic meter of ultrasonic extraction equipment, soak for 1 hour, heat to 60°C, and use 3KW ultrasonic power for ultrasonic reflux extraction for 2 hours to release the pomegranate peel extract; Concentrate the pomegranate peel extract under the conditions to obtain a relative density of 1.1g / cm 3 , the volume is the pomegranate peel concentrate of 120L, while reclaiming methanol; then in the pomegranate peel concentrate, add 1200L of deionized water, 0.5 kg of chitin flocculant, 5 kg of sugar with 303 gac, stir for 5 minutes and leave standstill for 8 Hours, the water decolorization liquid is filtered with a plate and frame fi...

Embodiment 2

[0042] Yunnan Mengzi pomegranate peel raw material (the water content of the pomegranate peel raw material is less than 10%, the content of punicalagin is 5.2%, and the content of gallic acid is 1.1%) is pulverized by a grinder; 100 kg of the crushed pomegranate peel raw material is moved into 1 Add 600L of ethanol with a concentration of 80% (V / V) to the ultrasonic extraction equipment of cubic meters, soak for 2 hours, heat to 70°C, and use 10KW ultrasonic power for ultrasonic reflux extraction for 1.5 hours to release the pomegranate peel extract; Concentrate the pomegranate peel extract under the conditions to obtain a relative density of 1.2g / cm 3 , volume is the pomegranate peel concentrated solution of 115L, reclaims ethanol simultaneously; Then in the pomegranate peel concentrated solution, add the deionized water of 1500L, 0.3 kilogram of chitin flocculant, 3 kilograms of sugar 303 active carbons, leave standstill 10 minutes after stirring 5 minutes Hours, the water d...

Embodiment 3

[0044] Yunnan Mengzi pomegranate peel raw material (the water content of the pomegranate peel raw material is less than 10%, the content of punicalagin is 5.2%, and the content of gallic acid is 1.1%) is pulverized by a pulverizer; Add 1400L of ethanol with a concentration of 65% (V / V) to a cubic meter of ultrasonic extraction equipment, soak for 0.5 hours, heat to 80°C, and use 30KW ultrasonic power for ultrasonic reflux extraction for 1 hour to release the pomegranate peel extract; Concentrate the pomegranate peel extract under the conditions to obtain a relative density of 1.3g / cm 3 , volume is the pomegranate peel concentrated solution of 212L, reclaims ethanol simultaneously; Then in the pomegranate peel concentrated solution, add the deionized water of 3000L, 0.4 kilogram of polyacrylic acid flocculants, 4 kilograms of sugar 303 gacs, leave standstill 12 after stirring for 5 minutes Hours, the water decolorization liquid is filtered by a plate and frame filter to remove ...

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Abstract

The invention provides a method for simultaneously separating and purifying punicalagin and gallic acid from pomegranate rind. The method comprises the following steps: raw material pretreatment, extraction, concentration, water precipitation decolorizing, resin adsorption, resin desorbing, desorbed solution extraction, and crystallization. The method realizes the simultaneous separation and purification of the punicalagin and the gallic acid from the pomegranate rind, the content of the separated and purified punicalagin is more than 98%, the content of gallic acid is more than 96%, the recovery rate of the punicalagin is more than 71%, and the recovery rate of the gallic acid is more than 68%.

Description

technical field [0001] The invention relates to the pomegranate peel extraction technology, in particular to a method for simultaneously extracting and separating punicalagin and gallic acid from the pomegranate peel. Background technique [0002] Pomegranate (Punica granatum L.) is a deciduous shrub or small tree plant of the genus Pomegranate in the Pomegranate family. my country has a cultivation history of nearly 2000 years. Compendium of Materia Medica records that pomegranate has the effect of "antidiarrheal dysentery, bleeding, anal prolapse, and metrorrhagia", and the pomegranate peel is rich in active ingredients such as gallic acid and punicalagin. Punicalagin, molecular formula C 48 h 28 o 30 , with a molecular weight of 1084.72, punicalagin has various pharmacological effects such as anti-oxidation, anti-cancer, antibacterial, anti-viral, anti-inflammatory, etc. In addition, after being absorbed by the human body, punicalagin can be decomposed into tannin Ell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H13/08C07H1/08C07C51/42C07C51/47C07C51/48C07C51/43C07C65/03
Inventor 冯建光
Owner SHENZHEN POLYTECHNIC
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