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Extraction method of coffee peel polyphenol

An extraction method and fruit peel technology, which are applied in the field of natural product extraction and processing, can solve problems such as extraction of undisclosed polyphenols, and achieve the effects of shortening extraction time, improving yield and reducing pollution.

Inactive Publication Date: 2021-01-05
青岛咖果巨能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the above raw materials are crushed, sieved, and then extracted with the above-mentioned extract, ultrasonic or microwave treatment can be carried out during the extraction process, and the residue is removed by centrifugation to obtain an extract containing plant polyphenols; Extraction of Polyphenols from Undisclosed Coffee Peel

Method used

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  • Extraction method of coffee peel polyphenol
  • Extraction method of coffee peel polyphenol
  • Extraction method of coffee peel polyphenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present embodiment relates to the extraction method of coffee peel polyphenols, comprising the following steps:

[0020] S1. Raw material pretreatment: take the dried coffee peel, put it into a high-speed multifunctional pulverizer, grind it into powder, and pass through a 50-mesh sieve to obtain coffee peel powder;

[0021] S2, using ultrasonic waves to assist microwave extraction method extraction: accurately weigh 30.0 grams of coffee peel powder, and add it to the ethanol aqueous solution with a volume concentration of 40%, the mass-volume ratio (solid-liquid ratio) of coffee peel powder and ethanol aqueous solution 1g: 20mL, then add 5 grams of citric acid, stir evenly; then put it in an ultrasonic cleaning machine for ultrasonic extraction for 15 minutes, the ultrasonic power is 200W, and the ultrasonic frequency is 40KHz; then put it in a microwave oven for extraction, and the microwave gear is set to high heat , the microwave time is 6 minutes, the microwave...

Embodiment 2

[0029] This embodiment is a comparison test between the method for extracting polyphenols from coffee peels of Example 1 and the water-bath method and microwave extraction method.

[0030] The water bath method is different from Example 1 in that: the mixed solution of coffee peel powder, ethanol aqueous solution and citric acid is extracted by water bath method, the extraction temperature is 70°C, the extraction time is 90min, centrifuged, and the extract containing coffee peel polyphenols is obtained .

[0031] The microwave extraction method is different from Example 1 in that: the mixed solution of coffee peel powder, ethanol aqueous solution and citric acid is extracted by microwave extraction, the extraction time is 6 minutes, the microwave gear is high fire, and the microwave power is 800W. Centrifuge to obtain the extract containing coffee peel polyphenols.

[0032] Step S3 of Example 1 was used to measure the polyphenol content in the extract obtained by the water ba...

Embodiment 3

[0034] The present embodiment relates to the extraction method of coffee peel polyphenols, comprising the following steps:

[0035] S1. Raw material pretreatment: take the dried coffee peel, put it into a high-speed multifunctional pulverizer, grind it into powder, and pass through a 50-mesh sieve to obtain coffee peel powder;

[0036]S2, using ultrasonic wave to assist microwave extraction method extraction: accurately weigh 30.0 grams of coffee peel powder, add it to the ethanol aqueous solution whose volume concentration percentage is 30%, the mass volume ratio (solid-liquid ratio) of coffee peel powder and ethanol aqueous solution 2g: 20mL, then add 4 grams of citric acid, stir evenly; then place it in an ultrasonic cleaning machine for ultrasonic extraction for 20 minutes, the ultrasonic power is 200W, and the ultrasonic frequency is 40KHz; then place it in a microwave oven for extraction, and the microwave gear is set to high heat , the microwave time is 6 minutes, the m...

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Abstract

The invention belongs to the technical field of natural product extraction and processing, and relates to an extraction method of coffee peel polyphenol. The method comprises the specific steps of carrying out raw material pretreatment, performing extraction by using an ultrasonic assisted microwave extraction method, weighing coffee peel powder, adding the coffee peel powder to an ethanol aqueoussolution with the volume concentration percentage of 30-50%, adding 4-6 g of citric acid, and performing uniform stirring; then performing ultrasonic extraction in an ultrasonic cleaning machine for10-25 minutes, and then performing extraction in a microwave oven; and then performing centrifugation, and taking a supernatant, namely obtaining an extracting solution containing the coffee peel polyphenol. The ultrasonic-assisted microwave extraction can form a high-temperature and high-pressure environment along with strong impact waves, so that cell structures are destroyed and broken, dissolution of anthocyanin in plants is facilitated, and the yield is increased; the method has the advantages of shortened extraction time, high extraction rate, low cost, low pollution and the like; the polyphenol is extracted from coffee peel for the first time; and the method is simple, high in polyphenol extraction rate and wide in market prospect.

Description

Technical field: [0001] The invention belongs to the technical field of extraction and processing of natural products, and relates to a method for extracting polyphenols from coffee peels. For the first time, plant polyphenols are extracted from coffee peels. The method is simple and the extraction rate is high. Background technique: [0002] Coffee, tea, and cocoa are the three major beverage crops in the world, among which coffee is one of the most popular beverages in the world and is widely grown around the world. Coffee peel is a by-product of the primary coffee processing process, accounting for about 29% of the dry weight of coffee. For every 1 ton of coffee beans produced, about 1 ton of coffee peel is produced. In the process of coffee processing, coffee peels are mostly thrown away directly as waste, causing serious waste of resources and environmental pollution. Even if stack retting fermentation is returned to the field as fertilizer, the utilization value is ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/74A61K131/00
CPCA61K36/74A61K2236/333
Inventor 郭晓飞高田林傅刚
Owner 青岛咖果巨能科技有限公司