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Method for extracting pomelo polyphenols from pomelo peel

A technology of pomelo peel and pomelo, applied in the field of preparation of pomelo peel extract, can solve the problems such as no research report on pomelo polyphenols found, unavailability of peel, waste of resources and the like

Inactive Publication Date: 2014-08-06
GUILIN JUNGONG BIOCHEM TECH DEVCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the edible pulp, there are still 20% to 30% of the fresh weight of the peel that cannot be used
The degradation of these agricultural wastes, on the one hand, creates a huge pressure on the stability of the ecosystem, on the other hand, it wastes a lot of resources (such as flavonoids, pectin, dietary fiber, etc.)
[0004] After patent search, there is no relevant research report on the extraction of grapefruit polyphenols from grapefruit peel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] A method for extracting pomelo polyphenols from pomelo peel, the steps are as follows:

[0081] (1) choose fresh pomelo peels that are not moldy or rotten, and crush them;

[0082] (2) Mix the raw materials and deionized water at a ratio of 1:3 and put them into an extraction tank, heat to 90°C and reflux for 3 hours to collect the extract;

[0083] (3) Import the collected extract into a concentrator for concentration under reduced pressure at a temperature of 25°C and a vacuum of 1.0Mpa, and concentrate to 1 / 4 of the volume of the original extract;

[0084] (4) The concentrated extract is centrifuged by a horizontal centrifuge, and the rotating speed is 4800r / min;

[0085] (5) The extract after centrifugation directly enters the D101 macroporous resin column with a flow rate of 1.5BV / hr, washes the column with ethanol with a mass concentration of 70% until the effluent is clear for 2 hours, and collects from the macroporous resin column The clear, transparent, sligh...

Embodiment 2

[0090] A method for extracting pomelo polyphenols from pomelo peel, the steps are as follows:

[0091] (1) choose fresh pomelo peels that are not moldy or rotten, and crush them;

[0092] (2) Mix the raw material and ethanol with a mass concentration of 65% in a ratio of 1:7 and put it into an extraction tank, heat it to 95°C and then reflux for extraction for 2 hours, collect the first extraction, and add 5 times the weight of the raw material for the second time Ethanol with a mass concentration of 65% was refluxed for 1 hour, the second extract was collected, and the extracts were combined:

[0093] (3) Pump the medicinal liquid in the extraction tank into the concentration tank for concentration at a reduced price, recover ethanol, control the temperature at 45°C, and vacuum degree of 0.08Mpa, and pump the medicinal liquid into the liquid storage tank after recovery until there is no alcohol smell;

[0094] (4) add water, leave standstill, cool: the ethanol liquid medicin...

Embodiment 3

[0102] (1) choose fresh pomelo peels that are not moldy or rotten, and crush them;

[0103] (2) Mix the raw material and ethanol with a mass concentration of 60% at a ratio of 1:10 and put it into an extraction tank, heat it to 100°C and extract it under reflux for 3 hours, collect the first extraction, and add 8 times the weight of the raw material for the second time Ethanol with a mass concentration of 60% was refluxed for 2 hours, and the extract was collected for the second time, and 5 times the weight of the raw material was added for the third time, and ethanol with a mass concentration of 60% was refluxed for 1 hour, and the extracts were combined:

[0104] (3) Pump the medicinal liquid in the extraction tank into the concentration tank for reduced price concentration, recover ethanol, the temperature is 60°C, and the vacuum degree is 0.06Mpa. After recovering to no alcohol smell, the medicinal liquid is pumped into the liquid storage tank;

[0105] (4) add water, leav...

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PUM

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Abstract

The invention relates to a preparation method for pomelo peel extractive, and particularly relates to a method for extracting pomelo polyphenols from pomelo peel. The method adopts the pomelo peel as a raw material, extracts the pomelo polyphenol through the steps of extraction by an extracting solvent, concentration, and separation and purification, adopts water or ethyl alcohol heating to extract, and can also adopt ultrasonic extraction or microwave extraction; the separation and purification adopt column chromatography separation and purification. Weight content of pomelo polyphenol in the extractive is above 65%; oxidation resistance indexes TEAC and ORAC of the pomelo polyphenol in the extractive show that the pomelo polyphenol is provided with excellent oxidation resistance activity, and can remove oxidation materials effectively; the method is high in content of pomelo polyphenol, avoids loss of active ingredients, improves producing technologies, and shortens a producing period.

Description

technical field [0001] The invention relates to a preparation method of grapefruit peel extract, in particular to a method for extracting grapefruit polyphenols from grapefruit peel. Background technique [0002] Grapefruit is the fruit of the pomelo tree, a citrus plant in the family Rutaceae. It has a long history of cultivation in my country, and it was planted as far back as the Zhou and Qin Dynasties BC. Its peel is rich in active ingredients such as polyphenols (flavonoids), pectin and dietary fiber. It is not only an important raw material in the food industry, but also an ideal object for phytochemical research. Grapefruit polyphenols have good antioxidant capacity and can effectively prevent cardiovascular diseases. In addition, it can also protect the template plasmid DNA from ultraviolet damage, inhibit the proliferation of tumor cells and the spread of cancer cells. [0003] As an important economic crop in southern my country, the annual output of pomelo is as...

Claims

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Application Information

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IPC IPC(8): A61K36/752A61P39/06
Inventor 周冠旻
Owner GUILIN JUNGONG BIOCHEM TECH DEVCO
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