公开(公告)号：DE19907933A1

公开(公告)日：2000-08-31

申请号：DE19907933

申请日：1999-02-24

Applicant: BASF AG

Inventor： FRANKE DIRK ,  BROECKEL ULRICH ,  WOLF HEIKO ,  GOESELE WALTER

IPC: B01D21/00 ,  B01D37/03 ,  B01J2/00 ,  B01D43/00

公开(公告)号：CA2034853A1

公开(公告)日：1991-07-26

申请号：CA2034853

申请日：1991-01-24

Applicant: FAUST TILLMANN ,  MEYER JOACHIM ,  WELLINGHOFF GEORG ,  GOESELE WALTER ,  MARTIN CHRISTOPH ,  GRIMMER JOHANNES ,  BASF AG

Inventor： FAUST TILLMANN ,  MEYER JOACHIM ,  WELLINGHOFF GEORG ,  GOESELE WALTER ,  MARTIN CHRISTOPH ,  GRIMMER JOHANNES

IPC: C07D475/14 ,  C12P17/18 ,  C12P25/00 ,  B01D21/26

Abstract: Riboflavin is removed from fermentation suspensions by them being heated at from 50 to 90.degree.C for from 1 to 3 hours, then cooled to from 0 to 30.degree.C over a period of from 1 to 5 hours, and subsequently being centrifuged to give a sediment fraction and liquid fraction in such a way that the sediment fraction contains predominantly riboflavin crystals as solid, and the liquid fraction contains virtually no crystalline riboflavin, and, where appropriate, resuspending the sediment fraction in from 0.5 to 2 parts by volume of water per part by volume of sediment fraction and repeating procedure c.