Process for preparing colorless methionine

Details Process for preparing colorless methionine Process for preparing colorless methionine

1979-03-27

1980-11-11

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C07C149247

Patent

active

042334616

ABSTRACT:
Methionine devoid of a coloring matter can be obtained from the aqueous solution of alkali salts of methionine prepared by hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin with an alkali by decolorizing the said solution with reducing sulfur compound and thereafter collecting methionine as colorless crystals.

REFERENCES:
patent: 2557913 (1951-06-01), Livak
patent: 2557920 (1951-06-01), White
patent: 3917683 (1975-11-01), Ouchi
patent: 3931307 (1976-01-01), Eikelmann
Kirk-Othmer, "Encyclopedia of Chemical Technology," 2nd Ed., vol. 3, pp. 550-567 (1964).

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