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Method for extracting phytic acid

A technology of phytic acid and plant raw materials, applied in the field of chemical industry, can solve the problem of high content of inorganic phosphorus in phytic acid, and achieve the effect of less process, high product purity and simple process operation.

Inactive Publication Date: 2011-09-14
COFCO BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Experimental program
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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 in SO 2 The gas is adjusted to pH 3.0, and after soaking at a temperature of 50°C for 48 hours, the liquid obtained after separating the solids is the extraction raw corn soaking water.

[0034] (2) Add 1‰ cationic polyacrylamide to 200L corn soaking water for flocculation, filter and precipitate to obtain filtrate for use, 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 pass the filtrate at a speed of 30L / h with a volume of 100L containing 50Kg polyacrylic acid D318 anion exchange resin (produced by Jiangsu Suqing Water Treatment Engineering Group Co., Ltd.) to adsorb phytic acid in it, and flow out The liquid is returned to the branch for reuse. After testing, the adsorption rate of organic phosphorus in the corn soaking water can reach 90%.

[0036] (4) Wash the polyacrylic acid D318 ani...

Embodiment 2

[0045] (1) After removing impurities from the bran, mix it with water at a weight ratio of 1:2 and add hydrochloric acid to adjust the pH to 5.0. After soaking at a temperature of 45°C for 72 hours, the liquid obtained after separating the solids is the original extraction solution. The filter residue can be used for feed processing.

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

[0047] (3) Add hydrochloric acid to adjust the pH of the filtrate to 5.0, and pass the filtrate at a speed of 40L / h with a volume of 100L containing 50Kg of polyacrylic acid D318 anion exchange resin (produced by Jiangsu Suqing Water Treatment Engineering Group Co., Ltd.) to adsorb phytic acid in it, and flow out The liquid is returned to the branch for reuse. After testing, the adsorption rate of organic phosphorus in this step can reach 75%. ...

Embodiment 3

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

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

[0056] (3) Add hydrochloric acid to adjust the pH of the filtrate to 2.8, and pass the filtrate at a speed of 35L / h with a volume of 100L containing 50Kg of polyacrylic acid D318 anion exchange resin produced by Jiangsu Suqing Water Treatment Engineering Group Co., Ltd. to adsorb phytic acid in it, and the effluent Return to the branch for reuse. After testing, the adsorption rate of organic phosphorus in this step can reach 80%.

[0057] (4) The above-mentioned polyacrylic...

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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 ofthe 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 engineering, in particular to a method for extracting phytic acid. Background technique [0002] Phytic acid is a versatile organic acid, its chemical name is phytic acid, and its 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., hardly soluble in ether, benzene, chloroform, and easy to decompose when heated (120°C). It is mainly used as organic phosphorus additives, chelating agents, antioxidants, preservatives, water softeners, fermentation promoters, metal preservatives, etc. [0003] Phytic acid has a strong complexing ability for most metal ions, and metal salts of phytic acid with two or more valence can be qualitatively precipitated. Each phytic acid molecule can provide six pairs of hydrogen atoms to form a stable structure of free radical electrons. It is widely used in da...

Claims

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Application Information

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Patent Type & Authority Patents(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