Method for preparing pectin by high static pressure technology

A high static pressure and pectin technology is applied in the field of preparing pectin by using high static pressure technology, which can solve the problems of poor pectin yield and quality, destruction of pectin molecular chains, and high extraction temperature, so as to ensure the yield and quality. , Improve market competitiveness and reduce the effect of extraction temperature

Inactive Publication Date: 2011-01-05
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (1) Long extraction time and low production efficiency: the existing traditional process adopts the method of direct heating under normal pressure, and the extraction time is as long as 60-90min
[0007] (2) The extraction temperature is high, the operating environment is dangerous, and the energy consumption is high: the existing traditional process is to heat the acid solution under normal pressure for extraction, and the temperature is 80-90°C. Due to the high extraction temperature, the energy consumption is high, resulting in increased production costs.
[0008] (3) The yield and quality of pectin are poor, and the product is not competitive: the extraction conditions of the existing traditional technology will destroy the molecular chain of pectin to a certain extent, resulting in poor quality and low yield of pectin

Method used

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  • Method for preparing pectin by high static pressure technology
  • Method for preparing pectin by high static pressure technology
  • Method for preparing pectin by high static pressure technology

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 1) Pretreatment of raw materials: fresh citrus peels were inactivated in a water bath at 90°C for 5 minutes, dried at 40°C, and then crushed to pass through a 60-mesh sieve; The aqueous solution is mixed according to the mass volume ratio of 1:20 (g / ml), and then vacuum-packed with a PAPE vacuum bag, and the vacuum degree in the package is 0.1MPa;

[0030] The acidic aqueous solution refers to adjusting pH=1.5 with hydrochloric acid in deionized water;

[0031] 2) Extraction of pectin under high static pressure: Preheat the high static pressure equipment until the outer wall temperature is 55°C (processing temperature), then put the above-mentioned vacuum-packed mixture into the high static pressure equipment, and the processing pressure is 500MPa. Processing temperature and processing pressure, high static pressure processing for 10 minutes, so as to achieve the purpose of pectin dissolution from raw materials;

[0032] 3) Post-treatment of pectin: after the high stat...

Embodiment 2

[0034] 1) Pretreatment of raw materials: inactivate fresh citrus peels in a water bath at 85°C for 10 minutes, dry them at 40°C, and then crush them through a 60-mesh sieve; press the crushed citrus peels with an extract of pH=1.5 The mass volume ratio is 1:20 (g / ml) and mixed, and then vacuum-packed with PAPE vacuum packaging bag, and the vacuum degree in the package is 0.1MPa;

[0035] The acidic aqueous solution refers to adjusting pH=1.5 with hydrochloric acid in deionized water;

[0036] 2) Extraction of pectin under high static pressure: Preheat the high static pressure equipment until the outer wall temperature is 55°C (processing temperature), then put the above-mentioned vacuum-packed citrus peels into the high static pressure equipment, the processing pressure is 400MPa, keep The treatment temperature and treatment pressure, high static pressure treatment for 10 minutes, so as to achieve the purpose of pectin dissolution from raw materials;

[0037] 3) Post-treatmen...

Embodiment 3

[0040] 1) Pretreatment of raw materials: inactivate fresh apple peel pomace in a water bath at 100°C for 3 minutes, dry at 40°C, and then pulverize until passing through a 60-mesh sieve; mix the crushed apple peel with pH=1.5 acidic The aqueous solution is mixed according to the mass volume ratio of 1:20 (g / ml), and then vacuum-packed with a PAPE vacuum packaging bag, and the vacuum degree in the packaging bag is 0.1MPa;

[0041] The acidic aqueous solution refers to adjusting pH=1.5 with hydrochloric acid in deionized water;

[0042] 2) Extraction of pectin under high static pressure: Preheat the high static pressure equipment until the outer wall temperature is 50°C (processing temperature), then put the above-mentioned vacuum-packed mixture into the high static pressure equipment, and the processing pressure is 300MPa, keep the Processing temperature and processing pressure, high static pressure processing for 15 minutes, so as to achieve the purpose of dissolving pectin fr...

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Abstract

The invention provides a method for preparing pectin by high static pressure technology. The method comprises the following steps of: 1) performing enzyme inactivation, drying and grinding on a pectin-rich raw material, mixing the treated raw material and acid aqueous solution with the pH of 1.5 and performing vacuum packaging on the mixture; and 2) putting a mixture vacuum-packed in the step 1) into high static pressure equipment, performing high static pressure treatment under the treatment pressure of between 300 and 600 MPa at the treatment temperature of between 20 and 55 DEG C for 5 to 15 minutes and separating and purifying to obtain the pectin. In the preparation method, the high static pressure technology is applied to the extraction of macromolecular pectin and a preferred parameter range is determined, so that the molecular chain of the pectin can be protected better and the yield and quality of the pectin are ensured. Moreover, the method of the invention has the advantages of shortening extraction time, lowering extraction temperature, increasing production yield and reducing production energy consumption, along with simple operation and contribution to the market competitiveness of a product.

Description

technical field [0001] The invention relates to a method for preparing pectin, in particular to a method for preparing pectin by using high static pressure technology. Background technique [0002] Pectin is an acidic polysaccharide substance in plants, with a molecular weight of about 50,000 to 300,000. It mainly exists in the cell wall and inner layer of plants, and is the support material of internal cells. Pectin is usually white to light yellow powder, slightly sour, water-soluble, can be separated in industry, used as gelling agent, thickener, stabilizer, suspending agent, emulsifier, flavor enhancer and synergist in food , can also be used in cosmetics, and has certain effects on protecting the skin, preventing ultraviolet radiation, healing wounds, and beautifying the skin. [0003] The traditional method of preparing pectin is to heat pectin-rich raw materials under acidic conditions, and then obtain it after separation and purification. The process flow is as foll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06
Inventor 吴继红韩冬梅廖小军胡小松郗胡平
Owner CHINA AGRI UNIV
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