Process for the stabilization of methionine

US3931307A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Gerd Eikelmann
• Rudolf Fahnenstich
• Theodor Lussling · Überlingen, DE
• Sven-Peter Mannsfeld
• Gerhard Pohl · St. Georgen, DE
• Herbert Tanner
• Hans Wagner

Key dates

• Filing date: Nov 30, 1973
• Grant date: Jan 6, 1976
• Expiry date: Nov 30, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C227/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Methionine is stabilized by adjusting the pH to the range from 3 to <5. The source of the hydantoin is preferably 5-(beta-methylmercaptoethyl)-hydantoin.