6Nandakumar K, Yoshimune K, Wakayama M, et al. Mi- crobial glutaminase biochemistry, molecular approaches and applications in food industry[J]. Journal of Molecular Ca- talysis B: Enzyrnatic,2003,23(2) :87-100.
7Wakayma M, Nagano Y, Renu N, et aL Characterization of salt tolerant glutaminase from Stenotrophomonas malto- phila NYW-81 and its application in Japanese soy sauce fer-mentation[J]. Journal of Industrial Microbiology and Bio- technology, 2005,32(9) : 383-390.
8Ye M, Liu X, Zhao L Y. Production of a novel salt-tolerant L-glutaminase from Bacillus amyloliquefaciens using agro- industrial residues and its application in Chinese soy sauce fermentation[J]. Biotechnology, 2013,12 (1) : 25-35.