Sherman and Shalloway
Process for producing biotin-vitamers
 In a process which comprises cultivating a micro-organism having the ability to produce a biotin-vitamer in a culture medium in the presence of a biotin-vitamer precursor thereby to produce the biotin-vitamer and accumulate it in the culture medium, the improvement wherein the biotin-vitamer precursor is added to the culture medium after the microbial cells have been grown. 
Nippon Zeon Co., Ltd.
C
C12P
inventional
Hideaki Yoshikazu Yoshiki
Yamada Izumi Tani