期刊
JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY
卷 31, 期 5, 页码 204-208出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10295-004-0135-8
关键词
Tetrahymena thermophila; statistical experimental design; fermentation; enzyme production
A fractional factorial design with eight trials was applied to select and model the effects of major factors, individually and in combination, on improving Tetrahymena thermophila growth and enzyme production. Regulated pH at 6.8 and olive oil at 0.5% (v/v) showed positive effects on fermentation, and increased cell growth parameters including generation time and maximal population formation. Lipase and protease production were also improved by these factors and were favoured by cultivation of Tetrahymena in darkness. This statistical experiment offers a beneficial and rapid screening procedure to select the most effective combination of factors influencing fermentation processes.
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