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Method for extracting phytic acid

A phytic acid and extraction technology, applied in the chemical industry, can solve the problem of high content of inorganic phosphorus in phytic acid, and achieve the effect of less process, wide industrial application prospect and high product purity

Inactive Publication Date: 2009-12-16
COFCO BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In order to solve the defect of high content of inorganic phosphorus in phytic acid prepared by the existing preparation process, the present invention provides a method for extracting phytic acid, which uses the difference in solubility to effectively remove inorganic phosphate impurities in phytic acid, and the prepared phytic acid solution Organic phosphorus content accounts for more than 90% of the total phosphorus content

Method used

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  • Method for extracting phytic acid

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Effect test

Embodiment 1

[0033] (1) After removing impurities from the corn, mix it with water at a weight ratio of 1:3, and then pass SO 2 The gas adjusts the pH to 3.0. After soaking at a temperature of 50°C for 48 hours, the liquid obtained after separating the solids is the extraction stock solution corn soaking water.

[0034] (2) Add 1‰ cationic polyacrylamide to 200L corn soaking water for flocculation, and obtain the filtrate after filtering the precipitate, and the filter residue can be used for feed processing.

[0035] (3) Add hydrochloric acid to adjust the pH of the filtrate to 2.5, and the filtrate is passed through at a speed of 30L / h. It is that 100L is equipped with 50Kg polyacrylic acid D318 anion exchange resin (produced by Jiangsu Suqing Water Treatment Engineering Group Co., Ltd.) to absorb the phytic acid therein, and flow out The liquid is returned to the branch factory for reuse. After testing, the adsorption rate of organic phosphorus in corn soaking water can reach 90%.

[0...

Embodiment 2

[0045] (1) After removing impurities from the bran, mix it with water at a weight ratio of 1:2, add hydrochloric acid to adjust the pH to 5.0, soak it at a temperature of 45°C for 72 hours, separate the solid and obtain the liquid as the extraction stock solution for later use. The filter residue can be used for feed processing.

[0046] (2) Add 0.1‰ non-ionic organic polymer flocculant to 200L of the extraction stock solution obtained in step (1) for flocculation, and filter the precipitate to obtain the filtrate for later use.

[0047] (3) Add hydrochloric acid to adjust the pH of the filtrate to 5.0, and the filtrate is passed through at a speed of 40L / h. It is that 100L is equipped with 50Kg polyacrylic acid D318 anion exchange resin (produced by Jiangsu Suqing Water Treatment Engineering Group Co., Ltd.) to absorb the phytic acid therein, and flow out The liquid is returned to the branch factory for reuse. After testing, the adsorption rate of organic phosphorus in this s...

Embodiment 3

[0054] (1) After removing impurities from the rice bran, mix it with water at a weight ratio of 1:5, and then pass through SO 2 The gas is adjusted to pH 4.5, and after soaking at a temperature of 30°C for 70 hours, the solid is separated to obtain an extraction stock solution for later use, and the filter residue can be used for feed processing.

[0055] (2) Add 0.5‰ anionic polyacrylamide to 200L of the extraction stock solution obtained in step (1) for flocculation, and filter the precipitate to obtain the filtrate for later use.

[0056] (3) Add hydrochloric acid to adjust the pH of the filtrate to 2.8, and the filtrate is passed through at a speed of 35L / h. It is that the polyacrylic acid D318 anion exchange resin produced by 50Kg Jiangsu Su Qing Water Treatment Engineering Group Co., Ltd. is installed in a volume of 100L to absorb the phytic acid therein, and the effluent Return to the branch factory for reuse. After testing, the adsorption rate of organic phosphorus in ...

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Abstract

The invention discloses a method for extracting a phytic acid, which is prepared by the following seven steps of extraction, flocculation, adsorption, edulcoration, desorption, concentration and crystallization, and hydrolysis and chain scission. The method uses the solubility difference to effectively remove inorganic phosphate impurities in the phytic acid, and the organic phosphorus content of the prepared phytic acid solution can reach over 90 percent of the total phosphorus content. The method is simple in process and less in raw material consumption, reduces the environmental pollution, and has wide industrial application prospect.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for extracting phytic acid. Background technique [0002] Phytic acid is a versatile organic acid whose chemical name is phytic acid and whose molecular formula is C 6 h 18 o 24 P 6 , Molecular weight: 660.08, light yellow or reddish brown transparent syrupy liquid, easily soluble in water, propylene glycol, glycerin, etc., insoluble in ether, benzene, chloroform, easy to decompose when heated (120°C). It is mainly used as organic phosphorus additive, chelating agent, antioxidant, preservative, water softener, fermentation accelerator, metal preservative, etc. [0003] Phytic acid has a very strong complexing ability for most metal ions, and metal salts with more than two valences of phytic acid can qualitatively precipitate. Each phytic acid molecule can provide six pairs of hydrogen atoms to form a stable structure for free radical electrons. It is widely used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/117
Inventor 周永生胡富贵周勇熊结青王建国
Owner COFCO BIOTECHNOLOGY CO LTD
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