Yong Soo Park1, Hisao Ohtake1, Masahiro Fukaya2, Hajime Okumura2, Yoshiya Kawamura2, Kiyoshi Toda1
1Institute of Applied Microbiology, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113, Japan
2Nakano Biochemical Research Institute, Nakano Vinegar Co., Ltd., Handa-shi, Aichi 474, Japan