ISSN:
1432-0614
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary The growth parameters of Acinetobacter calcoaceticus, relevant to its mass cultivation on acetate and ethanol, were determined in batch and continuous culture experiments. Acetic acid exhibited a more powerful inhibitory effect on the growth rate than ethanol. In batch culture, the acetate component of an acetate-ethanol substrate pair was preferentially utilized, but diauxic growth as such was not evident. The temperature optimum for growth was in the region of 29°–36°C, and the cell yield did not change appreciably over this temperature range. In carbon-limited chemostat cultures, the maximum specific growth rates on acetate and ethanol were 1.22 h−1 and 0.96 h−1 respectively, and the respective yield coefficients were 0.4 and 0.75. A high maintenance energy requirement was exhibited, especially during acetate-limited growth. The respiratory quotient was dependent on the growth rate, the significance of which is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00505341
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