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Method for extracting apple polyphenol from apple pomace by supercritical CO2

A carbon dioxide and apple polyphenol technology, which is applied in the field of supercritical CO2 extraction of apple polyphenols from apple pomace, the extraction of natural plant active ingredients, can solve the problems of long extraction time and large consumption of organic solvents, and achieves a simple and reliable process. , the effect of stable operation

Inactive Publication Date: 2006-07-19
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention patent with the patent number 01120589.X discloses a production process of extracting apple polyphenols with apple pomace. The above-mentioned method is used. This method takes a long time to extract and consumes a lot of organic solvents.

Method used

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  • Method for extracting apple polyphenol from apple pomace by supercritical CO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, the apple pomace after drying is pulverized to 40 orders, weighs 100g and adds 100mL of 95% ethanol and fully stirs and makes muddy extract, puts into supercritical fluid extractor, turns on CO 2 The steel cylinder, after the gas passes through the purifier I, enters the condenser for liquefaction, then is pressurized by the plunger pump and then enters the purifier II for further liquefaction, and enters the bottom of the extractor through the pipeline. The extraction pressure of the extractor is set to 35MPa, the temperature is 55°C, and static extraction 1 hour, using CO 2 The high-pressure, high-osmotic power makes the apple pomace plant cell wall broken and the active ingredients are dissolved; then, start the entrainer pump and inject g5% ethanol at the same time, and extract dynamically for 1-2 hours. The flow rate of the entrainer is 0.1L / h, from two The product is obtained in the separator, the pressure of the separator I is set at 6MPa, and the t...

Embodiment 2

[0013] Example 2, set the extraction temperature to 60° C., the extraction pressure to 30 MPa, change the entrainer to absolute ethanol, and other preparation methods are the same as in Example 1. The total amount of polyphenols in the extract was determined by Folin-Ciocalteu method, and the yield of apple polyphenols was 0.12%-0.15%.

Embodiment 3

[0014] Embodiment 3, ethanol extraction apple polyphenol control test

[0015] Weigh 100 g of apple pomace powder crushed to 40 meshes, extract 3 times with 300 mL of ethanol at 80 °C for 2 hours each time, use the Folin-Ciocalteu method to determine the total amount of polyphenols in the extract, and the yield of apple polyphenols is 0.09%- 0.11%.

[0016] The yield of apple polyphenols measured by comparative examples 1, 2, and 3 illustrates that the use of supercritical CO 2 The yield of apple polyphenols extracted from apple pomace was higher than that extracted with organic solvents.

[0017] The supercritical CO of the present invention 2 The extraction equipment is selected from Jiangsu Nantong Huaan Supercritical Extraction Co., Ltd.; the source of the pomace is the Baoding branch of Huiyuan Juice Factory, and it is the leftovers after squeezing the juice.

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Abstract

The provided extraction method with hypercritical CO2 for malic polyphenol from apple fragments comprises: A. crushing the apple fragments into 40 items, adding 95% ethanol of 100ml for every 100g fragments, and stirring evenly; B. putting the apple fragments mud into the hypercritical fluid extraction tank, opening the CO2 steel bottle to extract for 2-4h by ethanol with flow ratio as 40-45kg / h as carrying agent on condition of 25-35MPa and 50-60Deg. This invention improves yield better than the method with organic solvent, has stable and simple process, and brings obvious economic benefit.

Description

technical field [0001] The invention relates to a method for extracting apple polyphenols from apple pomace, in particular to a supercritical CO 2 The invention discloses a method for extracting apple polyphenols from apple pomace, which belongs to the technical field of extraction methods of natural plant active ingredients. Background technique [0002] Apple polyphenols are a class of important biologically active substances naturally occurring in apples, which have many important physiological functions and great development and application value. It has strong antioxidant, anti-variogenic and anti-caries effects, and can be developed into health care products, natural antioxidants or functional food additives, and is one of the most concerned natural compounds at present. At present, the method for preparing apple extract is traditional organic solvent extraction at home and abroad, extracting apple polyphenol crude extract from immature apples, and separating and puri...

Claims

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Application Information

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IPC IPC(8): C07D311/62
CPCY02P20/54
Inventor 魏福祥曲恩超
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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