Patent · US Expired

Method for the production of riboflavin of modification b/c in granular form

US7329748B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

BASF SE

Inventors

Dirk Franke · Birkenheide, DE
Friedrich Hill · Meckenheim, DE
Christoph Martin · Dietzenbach, DE
Thomas Knebel · Schifferstadt, DE

Key dates

Filing date	Apr 7, 2004
Grant date	Feb 12, 2008
Priority date	—
Expiry date	Nov 5, 2024

Classification

Technology area (CPC A)Human Necessities
CPC primaryA23L33/15
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to an improved process for preparing riboflavin of the B/C modification in granule form. Furthermore, the invention relates to the riboflavin preparation process wherein riboflavin of the A modification is (a) dissolved in aqueous mineral acid without treating the resulting riboflavin solution with activated carbon, (b) precipitated directly afterwards, steps (a) and (b) being carried out at a temperature in the range from 5 to 15° C., and (c) dried by fluidized bed granulation; and wherein the riboflavin does not come into contact with the aqueous mineral acid solvent for longer than on average 4 hours.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.