The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2000
Filed:
Jan. 07, 1997
Egge Aart Rosing, Schiedam, NL;
Hessel Turksma, Delft, NL;
Lipton, Inc., Englewood Cliffs, NJ (US);
Abstract
A process for preparing a savory flavor, the process comprising reacting a compound of general formula X with hydrogen sulphide and/or cystein, wherein ##STR1## in which R.sup.1 represents an alkyl group having 1 or 2 carbon atoms or hydrogen, R.sup.2 represents an alkyl group having from 1 to 4 carbon atoms or hydrogen, R.sup.3 represents an alkyl group having from 1 to 5 carbon atoms or hydrogen and R.sup.4 represents hydrogen or an organic radical consisting of from 1 to 6 carbon atoms, hydrogen and from 0 to 2 oxygen atoms. X is preferably 4-hydroxy-2,5-dimethyl-2-(2-hydroxy-3-oxo-2-butyl)-3(2H)-furanone, and is formed from the reaction of 4-hydroxy-2,5-dimethyl-3(2H)-furanone and diacetyl. 2,5-dimethyl-4-mercapto-3(2H)-furanone is a flavor compound obtainable by this process.