Novel Characteristics of Bifidobacterium bifidum in Solid State Fermentation System |
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| Authors: | Runlin Han C Edward Ebert Zhihong Zhao Liming Li Heping Zhang Ruihua Tian |
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| Institution: | (1) Department of Microbiology and Immunology, Health Science College, West Virginia University, Morgantown, WV 26505, USA;(2) College of Bioengineering, Nei Monggol Agricultural University, Huhhot, 010018, P.R. China |
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| Abstract: | Summary The characteristics of Bifidobacterium bifidum grown in solid state fermentation (SSF) system (water content of media 54.5 and 68.8%) was compared with the submerged fermentation
(SmF) system (water content of medium: 89.8%). Besides lactic acid (lactate) and acetic acid (acetate), the bacterium was
able to secrete propionic acid (propionate) and butyric acid (butyrate) under SSF conditions. However, it only produced lactate
and acetate under SmF conditions. The ratio of lactate to acetate was 1.26–1.62:1 in SSF but it was 1:2 in SmF. A higher content
of C16:0 and C18:1 as well as a lower content of C18:0 cell membrane fatty acids were observed in SSF than in SmF. There was
a lower growth rate, a lower viable count and a longer logarithmic growth phase for B. bifidum cultivated in SSF than in SmF. |
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| Keywords: | Bifidobacterium bifidum butyric acid membrane fatty acid propionic acid solid state fermentation |
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