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A kind of method for extracting proanthocyanidins from pitaya peel, obtained proanthocyanidins and uses

A technology of pitaya peel and proanthocyanidins, which is applied in the directions of pharmaceutical formulations, cosmetic preparations, dressing preparations, etc., can solve the side effects of pitaya peel proanthocyanidins and the product has a low extraction rate, and is not suitable for use in medicine, food, cosmetics, and is difficult Eliminate problems such as spore formation by microorganisms, and achieve the effect of easy operation, low pollution and easy removal

Inactive Publication Date: 2020-06-19
吴?基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The prior art has the following problems: the method for purifying pitaya peel proanthocyanidins by using various organic solvents will produce extremely toxic and side effects and the product extraction rate is low, which is not suitable for use in medicine, food, and cosmetics; the economic cost of the supercritical extraction method is relatively high; The fermentation extraction method is difficult to remove the microorganisms to form spores after fermentation, causing the risk of secondary pollution; the ultra-high pressure extraction method requires higher requirements and other defects

Method used

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  • A kind of method for extracting proanthocyanidins from pitaya peel, obtained proanthocyanidins and uses
  • A kind of method for extracting proanthocyanidins from pitaya peel, obtained proanthocyanidins and uses
  • A kind of method for extracting proanthocyanidins from pitaya peel, obtained proanthocyanidins and uses

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preparation example Construction

[0029] Preparation of pitaya peel powder: take dragon fruit and peel off the pitaya peel, wash and cut into pieces, dry the pitaya peel in an oven at 60°C until constant weight and crush, pass through a 100-mesh sieve to obtain the pitaya peel powder.

[0030] The decompression and vacuum rotary evaporation concentration process of the effluent liquid is as follows: inject the final effluent liquid into a rotary evaporator, and spin the liquid into an extract to constant weight under the conditions of a vacuum degree of 20 MPa and a temperature of 60 °C.

Embodiment 1

[0032] Weigh 20g of pitaya peel powder, use 200ml of glacial acetic acid solution with a mass percentage concentration of 5% as the extraction solvent, mix and shake evenly, and ultrasonically extract the pitaya peel powder solution for 30min at a temperature of 50°C, and centrifuge the crude extract at 4000r / min 20min, retain the supernatant; inject the supernatant into a chromatographic column equipped with a strong basic anion exchange resin at a flow rate of 1ml / min, remove part of the anthocyanins produced by acetic acid and proanthocyanidins under hot acid treatment, and then pass through 200ml The mass percent concentration is 50% ethanol for elution, and the effluent is collected at the bottom of the column; the effluent is injected into a chromatographic column equipped with a macroporous adsorption resin at a flow rate of 1ml / min for dynamic adsorption to remove impurities such as plant polysaccharides and proteins. The effluent was collected at the bottom of the colu...

Embodiment 2

[0034] Weigh 20g of pitaya peel powder, use 200ml of glacial acetic acid solution with a mass percentage concentration of 15% as the extraction solvent, mix and shake evenly, and at a temperature of 40°C, ultrasonically extract the pitaya peel powder solution for 25min, and centrifuge the crude extract at 4000r / min 20min, retain the supernatant; inject the supernatant into a chromatographic column equipped with a strong basic anion exchange resin at a flow rate of 1ml / min, remove part of the anthocyanins produced by acetic acid and proanthocyanidins under hot acid treatment, and then pass through 200ml The mass percent concentration is 30% ethanol for elution, and the effluent is collected at the bottom of the column; the effluent is injected into a chromatographic column equipped with a macroporous adsorption resin at a flow rate of 1ml / min for dynamic adsorption to remove impurities such as plant polysaccharides and proteins. The effluent was collected at the bottom of the co...

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Abstract

The invention discloses a method for extracting procyanidine from dragon fruit peels, procyanidine and an application. Acetic acid is adopted for extracting procyanidine, the ultrasonic-assisted extraction is also adopted and the cell permeability of dragon fruit peels is promoted, so that the speed of a crude procyanidine extract dispersing from serous fluid of dragon fruit peels to a solvent isincreased, the digestion time is shortened and the extraction ratio of active ingredients is increased. The method has the advantages of simple process, easiness in operation, high extraction efficiency, less pollution, and the like. The procyanidine used as an active ingredient of fungicide can be applied to the fields of medicines, food and cosmetics.

Description

technical field [0001] The invention relates to a method for extracting fruit and vegetable wastes, in particular to a method for extracting proanthocyanidins from dragon fruit peels, and the obtained proanthocyanidins and uses. Background technique [0002] Dragon fruit (Hylocereus undulatus Britt) is a plant of the genus Cactaceae. The optimum temperature for the growth of dragon fruit is 25°C-35°C, which belongs to tropical and subtropical fruits. At present, it is mostly produced in Hainan, Guangdong, Guangxi, Fujian, Yunnan and other provinces and regions of China. Dragon fruit not only has high nutritional value, but also has few pests and diseases during the growth process, and can grow normally without using any pesticides. Its peel contains very precious nutrients - proanthocyanidins. Therefore, dragon fruit is a kind of green, environmental protection fruit and health food with good efficacy. [0003] Pitaya peel extract proanthocyanidin is a polyphenolic compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/62A61P31/04A23L33/105A61K8/49
Inventor 王俊斌王海凤王巧巧李艳艳刘峰峄
Owner 吴?基
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