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Separation and purification technology of pineapple peel flavone and flavone

A technology for separation, purification and peel, which is applied to the separation and purification method of flavonoids from pineapple peel and the field of flavonoids, and can solve the problems of low purity of flavonoids, affecting efficacy and the like

Inactive Publication Date: 2020-09-29
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many reports on the extraction of flavonoids at home and abroad. At present, there are mainly solvent extraction methods, microwave, ultrasonic, and enzyme extraction methods, but the flavones obtained by these methods are low in purity, which affects their efficacy.

Method used

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  • Separation and purification technology of pineapple peel flavone and flavone
  • Separation and purification technology of pineapple peel flavone and flavone
  • Separation and purification technology of pineapple peel flavone and flavone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for separating and purifying flavonoids from pineapple peel, comprising the steps of:

[0028] Step 1, preparation of pineapple peel powder

[0029] Wash the pineapple peel and put it into an oven for drying treatment at 60°C to 70°C. Take out the dried pineapple peel and crush it with a grinder, put the peel powder into a clean sealed bag, and store it in the refrigerator.

[0030] Step 2, the preparation of pineapple peel flavonoid crude extract

[0031] Accurately weigh a certain amount of dried pineapple peel powder in a 1000mL beaker, and degrease with petroleum ether with a solid-to-liquid ratio of 1:2 (w / v). After the petroleum ether is evaporated to dryness, the degreased pineapple peel is obtained. Solid-to-liquid ratio 1:30 (w / v) Soak in ethanol with a volume fraction of 70% for 4 to 6 hours, stir evenly, transfer to a 2000mL two-necked flat-bottomed flask, then extract under microwave power 600W for 10 minutes, suction filter while hot, transfer to...

Embodiment 2

[0037] Step 1, preparation of pineapple peel powder

[0038] Wash the pineapple peel and put it into an oven for drying treatment at 60°C to 70°C. Take out the dried pineapple peel and crush it with a grinder, put the peel powder into a clean sealed bag, and store it in the refrigerator.

[0039] Step 2, the preparation of pineapple peel flavonoid crude extract

[0040] Accurately weigh a certain amount of dried pineapple peel powder in a 1000mL beaker, and degrease with petroleum ether with a solid-to-liquid ratio of 1:2 (w / v). After the petroleum ether is evaporated to dryness, the degreased pineapple peel is obtained. Solid-to-liquid ratio 1:30 (w / v) Soak in ethanol with a volume fraction of 70% for 4 to 6 hours, stir evenly, transfer to a 2000mL two-necked flat-bottomed flask, then extract under microwave power 600w for 10min, suction filter while hot, transfer to Evaporate and concentrate in a rotary evaporator until there is no ethanol, and store for future use.

[00...

Embodiment 3

[0046] Step 1, preparation of pineapple peel powder

[0047] Wash the pineapple peel and put it into an oven for drying treatment at 60°C to 70°C. Take out the dried pineapple peel and crush it with a grinder, put the peel powder into a clean sealed bag, and store it in the refrigerator.

[0048] Step 2, the preparation of pineapple peel flavonoid crude extract

[0049] Accurately weigh a certain amount of dried pineapple peel powder in a 1000mL beaker, and degrease with petroleum ether with a solid-to-liquid ratio of 1:2 (w / v). After the petroleum ether is evaporated to dryness, the degreased pineapple peel is obtained. Solid-to-liquid ratio 1:30 (w / v) Soak in ethanol with a volume fraction of 70% for 4 to 6 hours, stir evenly, transfer to a 2000mL two-necked flat-bottomed flask, then extract under microwave power 600w for 10min, suction filter while hot, transfer to Evaporate and concentrate in a rotary evaporator until there is no ethanol, and store for future use.

[00...

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Abstract

The invention belongs to a separation and purification technology of pineapple peel flavone, and particularly relates to a process for separating and purifying the pineapple peel flavone by using macroporous resin adsorption. The process comprises the following steps of degreasing pineapple peels by using a degreasing agent, performing extraction by using ethanol, and purifying obtained flavone crude extraction liquid by using an optimal scheme. According to the process, an optimal separation and purification method is found, and macroporous resin D101 is adopted for separation and purification, so that the flavone with relatively high purity is obtained. The recovery rate of the flavone obtained by separating and purifying the pineapple peels can reach 60.16%, and the purity reaches 86.72%. The antioxidant activity of the purified pineapple peel flavone is higher than that of unpurified flavone and BHT. Therefore, the obtained pineapple flavone product with relatively high purity andstrong oxidation resistance provides a scientific basis for further carrying out pineapple peel flavone industrial production and improving the utilization value of the pineapple peels in the future.

Description

technical field [0001] The invention belongs to the separation and purification technology of pineapple peel flavonoids, and in particular relates to a separation and purification method of pineapple peel flavonoids and flavonoids. Background technique [0002] Pineapple is commonly known as pineapple, also known as pineapple and pineapple. It is a herbaceous fruit tree of the bromeliaceae genus Pineapple. Its fruit is an aggregate fruit composed of many small fruits. Pineapple peel dregs account for 50% to 60% of the whole fruit weight, of which the peel accounts for about 30%. No matter in daily life or in factory production, people often directly abandon the pineapple peel and only take the pulp for utilization. According to reports, the nutrients of pineapple peel and pulp are similar, and discarding pineapple peel will cause a great waste of resources. Studies have shown that pineapple peel is rich in flavonoids. Flavonoids are a class of chemical substances with many...

Claims

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Application Information

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IPC IPC(8): A61K36/88A61P39/06A61K131/00
CPCA61K36/88A61K2236/33A61K2236/333A61K2236/35A61K2236/55A61P39/06
Inventor 顾采琴周琪琴朱冬雪
Owner GUANGZHOU UNIVERSITY
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