Isolation and optimization of Bacillus subtilis SH21 for low purine and high nattokinase activity
PANG Yuanxiang, XIE Yuanhong, JIN Junhua, LIU Hui, ZHANG Hongxing
Food and Fermentation Industries . 2021, (11): 194 -199 .  DOI: 10.13995/j.cnki.11-1802/ts.026039