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:
Nov. 28, 2006
Filed:
Dec. 27, 2002
Manabu Sato, Ibaraki, JP;
Masami Shimizu, Ibaraki, JP;
Jun Kohori, Ibaraki, JP;
Minoru Kase, Ibaraki, JP;
Takaaki Watanabe, Ibaraki, JP;
Kazuhiro Onozuka, Ibaraki, JP;
Manabu Sato, Ibaraki, JP;
Masami Shimizu, Ibaraki, JP;
Jun Kohori, Ibaraki, JP;
Minoru Kase, Ibaraki, JP;
Takaaki Watanabe, Ibaraki, JP;
Kazuhiro Onozuka, Ibaraki, JP;
Kao Corporation, Tokyo, JP;
Abstract
Provided is a preparation process of diglycerides which comprises reacting a fatty acid or lower alkyl ester thereof with glycerin in the presence of an immobilized partial glyceride lipase while removing water, which is generated upon reaction, out of the system. The reaction is preferably terminated when the acid value (AV) of the reaction mixture satisfies the following range: 50R-60>AV>70R-150 (with the proviso that AV>0). The present process makes it possible to efficiently prepare a high purity of diglycerides without impairing lipase activity even under reduced pressure. The present process is effective without being influenced by variations in reaction conditions such as fatty acid/glycerin ratio, reaction temperature or enzyme concentration. Particularly, even when the fatty acid/glycerin ratio is high, a high purity of diglycerides can be produced at a high reaction yield.