Kohki Kiyoshima
Mercian Corporation
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Publication
Featured researches published by Kohki Kiyoshima.
Journal of Chromatography A | 1983
Mitsuyasu Okabe; Kohki Kiyoshima; Ikuo Kojima; Rokuro Okamoto; Yasuo Fukagawa; Tomoyuki Ishikura
Abstract A one-dimensional silica gel thin-layer chromatographic method has been devised for qualitative and quantitative analysis of carbapenem antibiotics in fermentation broths. The antibiotics were extracted from the broth filtrate with a solvent mixture of 1-butanol and chloroform (1:1) and developed on a silica gel thin-layer plate with a mobile phase of acetonitrile—0.75% acetic acid (9:2). Carbapenem compounds on the thin-layer plate were visualized as reddish pink spots with the Ehrlich reagent and quantitated by densitometry.
The Journal of Antibiotics | 1980
Rokuro Okamoto; Masami Tsuchiya; Hideo Nomura; Hiroshi Iguchi; Kohki Kiyoshima; Senji Hori; Taiji Inui; Tsutomu Sawa; Tomio Takeuchi; Hamao Umezawa
The Journal of Antibiotics | 1981
Toshikazu Oki; Yasue Matsuzawa; Kohki Kiyoshima; Akihiro Yoshimoto; Hiroshi Naganawa; Tomio Takeuchi; Hamao Umezawa
The Journal of Antibiotics | 1980
Rokuro Okamoto; Tsumoru Fukumoto; Hideo Nomura; Kohki Kiyoshima; Kenji Nakamura; Akira Takamatsu; Hiroshi Naganawa; Tomio Takeuchi
The Journal of Antibiotics | 1982
Masami Tsuchiya; Masa Hamada; Tomio Takeuchi; Hamao Umezawa; Kenichi Yamamoto; Hiroshi Tanaka; Kohki Kiyoshima; Shunro Mori; Rokuro Okamoto
The Journal of Antibiotics | 1980
Norio Shibamoto; Akihiko Koki; Masayoshi Nishino; Kosumi Nakamura; Kohki Kiyoshima; Kazuhiko Okamura; Mitsuyasu Okabe; Rokuro Okamoto; Yasuo Fukagawa; Yasutaka Shimauchi; Tomoyuki Ishikura
The Journal of Antibiotics | 1982
Rokuro Okamoto; Kohki Kiyoshima; Masao Yamamoto; Kazuaki Takada; Tetsuo Ohnuki; Tomoyuki Ishikura; Hiroshi Naganawa; Kuniaki Tatsuta; Tomio Takeuchi; Hamao Umezawa
The Journal of Antibiotics | 1989
Kohki Kiyoshima; Michiko Sakamoto; Hideo Nomura; Takeo Yoshioka; Rokuro Okamoto; Tsutomu Sawa; Hiroshi Naganawa; Tomio Takeuchi
Chemical & Pharmaceutical Bulletin | 1989
Kohki Kiyoshima; Michiko Sakamoto; Tomoyuki Ishikura; Yasuo Fukagawa; Takeo Yoshioka; Hiroshi Naganawa; Tsutomu Sawa; Tomio Takeuchi
The Journal of Antibiotics | 1988
Takeo Yoshioka; Kohki Kiyoshima; Miharu Maeda; Michiko Sakamoto; Tomoyuki Ishikura; Yasuo Fukagawa; Tsutomu Sawa; Masa Hamada; Hiroshi Naganawa; Tomio Takeuchi
