Method for producing phytin
AssigneeDso "Uharmachim"
InventorLyubomir Alexandrov Kolchev
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Abstract
Protein and phosphorous free phytin is recovered from raw materials containing phytin by a process whereby the raw material is treated with an aqueous acid solution having a pH of about 1 to obtain a filtrate from which the phytin is precipitated by adding sufficient of a solution of bicarbonate ions to produce a pH of 7-8. In this way, phosphorous ions remain in solution while the phytin is precipitated out. The subsequently recovered precipitated phytin is again dissolved in a mineral acid and then saturated with a denaturating agent such as sulfur dioxide, ether or formaldehyde to thereby eliminate protein from the solution. Upon the addition of sufficient alkaline agent, the phytin is again precipitated and recovered in its purified form.
Claims3
A method for the production of inorganic phosphorus and protein free phytin from groats and rice brans containing phytin which comprises the steps of:
- a. forming a suspension of said raw materials and an aqueous solution of an acid selected from the group consisting of hydrochloric and nitric acid having a pH of about 1;
- b. filtering the suspension to obtain an acidified filtrate extract containing said phytin;
- c. adding an aqueous solution containing bicarbonate ions to said extract in an amount sufficient to produce a pH of 7-8 whereby phytin is precipitated;
- d. recovering the precipitated phytin;
- e. dissolving the recovered phytin in hydrochloric or nitric acid solution of pH 1;
- f. saturing the solution of phytin with a denaturing agent selected from the group consisting of sulfur dioxide, ether and formaldehyde;
- g. filtering the denatured solution to recover a solution of purified phytin free from protein;
- and
- h. precipitating the purified phytin by adding an aqueous bicarbonate solution to the solution thereof.
Dependencies are inferred from the claim text.