Degree of Polymerization of Cellulose from Acetobacter xylinum BPR2001 Decreased by Cellulase Produced by the Strain
スポンサーリンク
概要
- 論文の詳細を見る
Acetobacter xylinum produces both cellulase and bacterial cellulose, but some report believed that this cellulase activity does not decrease the degree of polymerization (DP) of bacterial cellulose during cultivation. A. xylinum subsp. sucrofermentans BPR2001 produces two enzymes that hydrolyze CM-cellulose and cellotriose, respectively. We examined the effect of the two cellulase activities on the DP of bacterial cellulose when bacterial cells were cultured with agitation at pH 4, where little cellulase is produced, and at pH 5, where much cellulase is produced. The weight-average degree of polymerization (DP_w) of bacterial cellulose remained in the range of 14,000 of 16,000 during cultivation at pH 4, but at pH 5, the DP_w decreased from 16,800 to 11,000. The mechanical strength of a sheet prepared from the bacterial cellulose produced at pH 4 was higher than those of BC produced at pH 5. These results suggest that the two cellulase activities cause the decrease in DP and deterioration of physical properties of bacterial cellulose seen during cultibation.
- 社団法人日本農芸化学会の論文
- 1997-11-23
著者
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Tahara N
Wood Research Institute Kyoto University
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Nakai Tomonori
Wood Research Inst. Kyoto Univ.
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Watanabe K
Faculty Of Pharmaceutical Science School Of Medicine Fukuoka University
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MORINAGA Yasushi
Institute of Life Sciences, Ajinomoto Co. , Inc.
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YANO HISATO
Bio-Polymer Research Co. Ltd.,
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YOSHINAGA FUMIHIRO
Bio-Polymer Research Co. Ltd.,
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TAHARA NAOKI
Bio-Polymer Research Co., Ltd.
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Watanabe Katsunori
Department Of Bioresources Chemistry Faculty Of Horticulture Chiba University
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WATANABE Kunihiko
Bio-Polymer Research Co., Ltd.
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TABUCHI Mari
Bio-Polymer Research Co., Ltd.
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MORINAGA Yasushi
Bio-Polymer Research Co., Ltd.
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Watanabe K
Department Of Agriculture Tokyo University Of Agriculture
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Yano Hisato
Bio-polymer Research Co. Ltd. Ksp R&d Business-park Bldg
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Tabuchi Mitsuaki
Yonezawa Women's College Of Yamagata Prefecture
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Watanabe K
Research Institute For Food Science Kyoto University:(present Address)department Of Agricultural Che
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Watanabe K
Department Of Applied Biological Sciences Faculty Of Agriculture Saga University
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Watanabe K
Marine Biotechnol. Inst. Iwate Jpn
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Morinaga Y
Institute Of Life Sciences Ajinomoto Co. Inc.
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Yoshinaga F
Bio-polymer Research Co. Ltd.
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Yoshinaga Fumihiro
Bio-polymer Research Co. Ltd.
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Watanabe Kunihiko
Bio-polymer Research Co. Ltd.
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Yano Hisato
Bio-Polymer Research Co. Ltd. , KSP R&D Business-Park Bldg
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