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Method for extracting pectin by utilizing potato scraps

A potato and potato residue technology, applied in the field of potato pectin extraction, can solve the problems of not meeting the requirements of pectin quality and purity, high impurity macromolecular carbohydrate content, large aluminum residue, etc. The effect of lowering blood sugar and blood lipids and a large amount of raw materials

Inactive Publication Date: 2012-03-14
黑龙江北大荒斯达奇生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a new method for extracting pectin by using potato dregs to solve the problems of low pectin purity, high impurity macromolecular carbohydrate content, low yield, and inability to extract pectin in known methods for extracting pectin from potato dregs. Meet the requirements for the quality and purity of pectin; and the aluminum residue is serious, the aluminum residue is large, and the equipment corrosion is serious in the production process

Method used

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specific Embodiment approach 1

[0010] Specific embodiment one: utilize the method for extracting pectin from potato residues in the present embodiment to carry out according to the following steps:

[0011] 1. Mix fresh potato residue and ultrapure water, wherein the mass ratio of fresh potato residue and pure water is 1:3, then add it into a homogenizer, and perform homogenization treatment at a speed of 10000r / min for 5 minutes to obtain potato residue The particle size of the potato residue in the potato residue slurry is 2-50 μm;

[0012] 2. Stir the potato slurry at a speed of 100~150r / min, adjust the pH value to 8~8.5, then add protease, react at 50~55°C for 3h, and heat at 0.4~0.6MPa steam pressure for 15~30min (full paste liquefaction), then add high temperature resistant α-amylase, adjust the pH value to 5.5~7, act at 90~95°C for 0.5h (to fully liquefy the starch), cool to 60°C, and then add α-1,4- Glucose hydrolase, adjust the pH value to 4~4.5, saccharify and hydrolyze at 60°C for 2 hours (so th...

specific Embodiment approach 2

[0015] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the acid-base used for adjusting pH in step 2 is an inorganic acid-base, and the alkali is sodium hydroxide or sodium carbonate, and the acid is sulfuric acid or hydrochloric acid, and the concentration of the alkali is is 1 mol / L, and the acid concentration is 1 mol / L. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment 3: This embodiment differs from specific embodiment 1 or 2 in that: the enzymatic activity of the protease described in step 2 is 200,000 U / g. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a method for extracting pectin by utilizing potato scraps, belonging to a pectin extracting method and aiming at solving the problems that the known method for extracting the pectin by using the potato scraps results in lower pectin purity, higher content of impurities of macromolecule carbohydrates, lower pectin yield, serious and a large amount of aluminum residue and serious equipment corrosion in the production process and cannot meet the requirements on the quality and the purity of the pectin. The method comprises the following steps of: removing protein and starch through an enzyme process; carrying out acid extraction; precipitating through alcohol and washing; and drying and pulverizing to obtain the pectin. The prepared pectin has high purity, high yield,no aluminum residue and lower content of the macromolecule carbohydrates.

Description

technical field [0001] The invention relates to a method for extracting potato pectin. Background technique [0002] Pectin is mainly used as food additives, such as thickeners, gelling agents, stabilizers, fat substitutes, emulsifiers, etc.; its application in the pharmaceutical and cosmetic industries also shows an increasing trend, and pectin itself is a water-soluble dietary fiber. It can reduce blood sugar and blood lipids, promote vitamin absorption, prevent lead poisoning, prevent arteriosclerosis, and treat AIDS. The demand is on the rise. [0003] At present, the main raw materials for producing pectin are still citrus peels and apple pomace, and the raw materials used are scattered and difficult to collect and process. my country's pectin processing technology and production are relatively backward, and domestic pectin production is limited, so a large amount of pectin needs to be imported. Potato residues are rich in pectin, which cannot be obtained by tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/06C12S3/02
Inventor 李智广高金波姜海花王丽丽徐明亮崔媛邹勤熙
Owner 黑龙江北大荒斯达奇生物科技有限公司
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