Mycelial pellet formation by Rhizopus oryzae ATCC 20344 |
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Authors: | Zhou Ying Du Jianxin Tsao George T |
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Institution: | (1) Laboratory of Renewable Resources of Engineering, Purdue University, 47907 West Lafayette, IN;(2) Present address: Biomass Processing Technology, Inc., 6877 Vista Parkway, North West, 33413 Palm Beach, FL |
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Abstract: | Factors in a cultivation medium affecting fungal growth morphology and funmaric acid production by Rhizopus oryzae ATCC 20344 were investigated. These factors included the initial pH value and trace metals such as zinc, magnesium, iron,
and manganese in the cultivation medium. It was found that a significant change in the growth morphology of R. oryzae ATCC 20344 occurs when the initial pH value is varied. A lower initial pH value in the cultivation medium was inhibitory
to fungal growth, and fast growth in the cultivation medium at a higher initial pH value promoted, the formation of large
pellets or filamentous forms. Trace metals in the cultivation media also had significant effects on pellet formation and fumaric
acid fermentation. |
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Keywords: | Pellet formation fumaric acid Rhizopus oryzae |
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