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:
Aug. 20, 1985
Filed:
Aug. 01, 1983
Applicant:
Inventors:
Assignee:
SIRAC Spa, Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C13K / ;
U.S. Cl.
CPC ...
127 30 ; 127 462 ; 536125 ; 536127 ;
Abstract
A process for preparing lactulose from lactose, in the form of a concentrated syrup or high purity crystals, for pharmaceutical use or for use as a sweetener. The process is characterized by using as the lactose epimerizing agent a mixture of equal parts of MgO and sodium hydrosulphite, each component being used to the extent of between 0.05 and 0.2% by weight with respect to the lactulose, at a temperature of about 100.degree. C. The epimerization is complete in a few minutes. The crystalline lactulose is obtained by crystallization from ethanol.