TY  - JOUR 
T1  - Enhanced Production of Vitamin K<sub>2</sub> from   <i>Bacillus subtilis (natto)  </i>by Mutation and Optimization of the Fermentation Medium
JO  - Brazilian Archives of Biology and Technology
A1  - Song, Junying
A1  - Liu, Hongxia
A1  - Wang, Li
A1  - Dai, Jun
A1  - Liu, Yan
A1  - Liu, Hui
A1  - Zhao, Genhai
A1  - Wang, Peng
A1  - Zheng, Zhiming
SN  - 1516-8913
UL  - 10.1590/S1516-8913201402126
VL  - 57 
Y1  - 2014
PB  - Brasil 
ER  -