Production of extracellular 5-aminolevulinic acid byClostridium thermoaceticum grown in minimal medium |
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Authors: | Koesnandar Shoji Ago Naomichi Nishio Shiro Nagai |
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Affiliation: | (1) Department of Fermentation Technology, Faculty of Engineering, Hiroshima University, Saijo-cho, 724 Higashi Hiroshima-shi, Japan |
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Abstract: | Summary A growth associated formation of extracellular 5-aminolevulinic acid (ALA) was found in the homoacetogenesis of glucose byClostridiumthermoaceticum grown in minimal defined medium. The growth and ALA production was enhanced by L-cysteine HCl both in complex medium (UM) and minimal defined medium (MDM). The amount of ALA produced extracellularly in MDM wasca. 15 mg/L after 90-h anaerobic cultivation (cell-mass: 1.5 g/l; glucose consumed: 20 g/l). |
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