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. 14, 1995
Filed:
Jul. 12, 1993
Francis Devos, Morbecques, FR;
Roquette Freres, Lestrem, FR;
Abstract
A process for the manufacture of mannitol in which: in a first step, a fructose syrup containing less than 15% glucose is subjected to an enzymatic isomerization using at least one enzyme capable of interconverting fructose and mannose, the enzymatic isomerization resulting in the production of a mixture of fructose and mannose containing at least 15% mannose, in a second step, the mixture of fructose and mannose is subjected to a chromatographic separation treatment so as to obtain at least two fractions one of which (fraction X1) is highly enriched with mannose and the other of which (fraction X2) is highly enriched with fructose, in a third step, fraction X2 is at least partially recycled to the top of the enzymatic isomerization step, in a fourth step, fraction X1, highly enriched with mannose, is hydrogenated so as to obtain a mannitol-rich syrup.