Method for extracting phytic acid

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 ...

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