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A method for extracting proanthocyanidins from roxburghii peel

A proanthocyanidin and prickly pear technology, which is applied in the directions of organic chemistry, food processing, etc., can solve the problems of unsolved waste of prickly pear peel residue, increase in extraction and purification cost, damage to the structure of active ingredients, etc., so as to improve the extrusion puffing effect, improve the Purification effect, the effect of improving the extraction rate

Active Publication Date: 2022-05-20
春归保健科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material in this scheme is Rosa roxburghii pulp, which has a wide range of sources and is cheap and easy to get; while Rosa roxburghii proanthocyanidins are prepared, various products such as Rosa roxburghii pulp juice are also produced, realizing the comprehensive utilization of Rosa roxburghii pulp; the equipment is simple, the reaction Mild conditions, energy saving, and safe production; but this invention does not solve the resource waste of prickly pear pomace residue, and the multiple pressing in this scheme is easy to destroy the active ingredient structure, while using ultrafiltration, resin adsorption, reverse osmosis and other processes Resulting in an increase in the cost of extraction and purification
Although the literature of "Extraction and Antioxidant Activity of Proanthocyanidins from Rosa roxburghii" (published by Zhang Xiaojuan et al. in 2018) mentioned the extraction of proanthocyanidins from rosa roxburghii peel, although the extraction method is simple to operate, but due to the high temperature resistance of proanthocyanidins and the active ingredients Instability makes extraction inefficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The present embodiment provides the method for extracting proanthocyanidins from Rosa roxburghii peel, specifically comprises the following steps:

[0046] S1 Adding starch and co-grinding: adding 3% starch by weight of Rosa roxburghii to Rosa roxburghii peel, and then grinding at a temperature of 5°C until the particle size of the mixture is ≥300 mesh, to obtain Rosa roxburghii powder mixed with starch;

[0047] S2 extruding and puffing: extruding and puffing the prickly pear skin powder obtained in step S1 at a rotating speed of 90 rpm and a temperature of 45°C;

[0048]S3 water extraction: put the extruded and expanded material in water 6 times its weight and at a temperature of 25°C for constant temperature extraction for 1 hour, and every 30 minutes during the extraction process, nitrogen gas is introduced for 30 seconds, and then oxygen is introduced for 60 seconds. 260mmol / min

[0049] S4 solid-liquid separation: the water extract is subjected to solid-liquid se...

Embodiment 2

[0053] The present embodiment provides the method for extracting proanthocyanidins from Rosa roxburghii peel, specifically comprises the following steps:

[0054] S1 Adding starch and co-grinding: adding 5% starch by weight of Rosa roxburghii to Rosa roxburghii peel, and then grinding at a temperature of 15°C until the particle size of the mixture is ≥300 mesh to obtain Rosa roxburghii powder mixed with starch;

[0055] S2 extruding and puffing: extruding and puffing the prickly pear skin powder obtained in step S1 at a rotating speed of 150 rpm and a temperature of 65°C;

[0056] S3 water extraction: put the extruded and expanded material in water 8 times its weight and at a temperature of 40°C for constant temperature extraction for 1.8 hours, and every 45 minutes during the extraction process, nitrogen gas is introduced for 45 seconds, and then oxygen is introduced for 90 seconds. The flow rate is 390mmol / min

[0057] S4 solid-liquid separation: the water extract is subjec...

Embodiment 3

[0061] The present embodiment provides the method for extracting proanthocyanidins from Rosa roxburghii peel, specifically comprises the following steps:

[0062] S1 Adding starch and co-grinding: adding 4% starch by weight of Rosa roxburghii to Rosa roxburghii peel, and then grinding at a temperature of 10°C until the particle size of the mixture is ≥300 mesh, to obtain Rosa roxburghii powder mixed with starch;

[0063] S2 extruding and puffing: extruding and puffing the prickly pear skin powder obtained in step S1 at a speed of 120 rpm and a temperature of 55°C;

[0064] S3 water extraction: place the extruded and expanded material in water 7 times its weight and at a temperature of 37°C for constant temperature extraction for 1.5 hours, and during the extraction process, every 30-45 minutes, pass nitrogen for 35 seconds, and then pass oxygen for 75 seconds , the gas flow rate is 330mmol / min

[0065] S4 solid-liquid separation: the water extract is subjected to solid-liquid...

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Abstract

The present invention relates to the extraction technology of natural active substances, in particular to a method for extracting proanthocyanidins from thorn pear skin, which is to add starch to the thorn pear skin and then grind it to obtain starch-mixed thorn pear skin powder with a particle size ≥ 300 mesh, and then extract the thorn pear skin powder The pear peel powder is extruded and puffed, extracted by organic solvent extraction or water extraction, and then subjected to solid-liquid separation, purification, and low-temperature drying to obtain thorn pear peel proanthocyanidins, realizing the reuse of thorn pear peel dregs, reducing Waste of resources, reduce the cost of proanthocyanidin extraction, and improve the extraction effect of proanthocyanidin.

Description

technical field [0001] The invention relates to a technology for extracting natural active substances, in particular to a method for extracting proanthocyanidins from roxburghii bark. Background technique [0002] Rosa roxburghii is a wild fruit tree that has been planted on a large scale in Guizhou Province in recent years. Rosa roxburghii is the waste produced in the process of brewing fruit wine or fruit juice. At present, most of it is used as feed, fertilizer, and even garbage treatment, which not only reduces its additional value, but also lead to waste of resources. [0003] Rosa roxburghii contains proanthocyanidins, which can be reused by reasonable extraction. Proanthocyanidins are bioflavonoids with special molecular structure composed of different amounts of catechin or epicatechin. It is currently internationally recognized as the most effective natural antioxidant for scavenging free radicals in the human body. It has the activities of scavenging free radicals...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/62
CPCC07D311/62Y02P60/87
Inventor 杨梦海刘建新廖德举刘倩倩谢煜
Owner 春归保健科技有限公司
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