期刊
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
卷 84-6, 期 -, 页码 779-789出版社
HUMANA PRESS INC
DOI: 10.1385/ABAB:84-86:1-9:779
关键词
pellet formation; fumaric acid; Rhizopus oryzae
Factors in a cultivation medium affecting fungal growth morphology and fumaric acid production by Rhizopus ouyzae 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 X. ouyzae 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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