Application of Maxblend Fementor^<[○!R]> for Microbial Processes
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概要
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Applied of the Maxblend^<[○!R]> impeller (which was originally developed for mixing high viscous liquids during chemical reactions) to a bioreactor (Maxblend Fermentor^<[○!R]> [MBF]) was investigated. In comparison with turbine impeller fermentor (TBN), the MBF showed higher mixing capacity for high viscous liquid and consequently, the mixing time (θ m) was less than 50% of that observed with the TBN. Furthermore, by combining the Maxblend^<[○!R]> impeller with a spiral sparger, the k_La was much higher than of the TBN with a ring sparger.During the fermentative production of hyaluronic acid (a biopolymer) in TBN, there was a nonhomogeneous pH distribution inside the fermentor when the viscosity of the broth was high. Consequently, the pH in some parts of the fermentor was lower than the optimum pH for hyaluronic acid production. On the other hand, when MBF with spiral sparger was used, the pH distribution inside the fermentor was homogeneous throughout the cultivation, resulting to about 20% increase in the hyaluronic acid productivity compared with a TBN. In the case of γ-linolenic acid (GLA) production by Mortierella ramanniana, although the power consumption for liquid agitation was lower in the MBF equipped with a spiral sparger than in the TBN, small har pellets were formed in former and this resulted in a higher GLA content of the lipid. Furthermore, in contrast with the pellets of various sizes formed in the TBN, the sizes of the pellets formed in the MBF were uniform. This was because the shear stress distribution was more uniform inside the MBF than in the TBN under the same agitation conditions.
- 社団法人日本生物工学会の論文
- 1997-01-25
著者
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Hiruta O
Parmaceutical Technology Laboratories Meiji Seika Kaisha Ltd.
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Hiruta O
Meiji Seika Kaisha Ltd. Kanagawa Jpn
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Hiruta Osamu
Parmaceutical Technology Laboratories Meiji Seika Kaisha Ltd.
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Tanaka Hideo
Institute Of Life Science And Bioengineering Graduate School Of Life And Environmental Science Unive
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YAMAMURA KENJI
Research and Development Cneter, Sumitomo Heavy Industries Ltd.,
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TAKEBE HIDEHI
Pharmaceutical Technology Laboratories, Meiji Seika Kaisha Ltd.,
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FUTAMURA TAKAFUMI
Parmaceutical Technology Laboratories, Meiji Seika Kaisha Ltd.,
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IINUMA KATSUHARU
Parmaceutical Technology Laboratories, Meiji Seika Kaisha Ltd.,
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Takebe Hidehi
Pharmaceutical Technology Laboratories Meiji Seika Kaisha Ltd.
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Yamamura K
Osaka Univ. Osaka Jpn
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Yamamura Kenji
Research And Development Cneter Sumitomo Heavy Industries Ltd.
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FUTAMURA TAKAFUMI
United Graduate School of Agricultural Science, Gifu University
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Futamura Takafumi
United Graduate School Of Agricultural Science Gifu University
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Iinuma Katsuharu
Parmaceutical Technology Laboratories Meiji Seika Kaisha Ltd.
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Tanaka Hideo
Institute For Biological Resources And Functions National Institute Of Advanced Industrial Science A
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