Oxidative Depolymerization of Chitosan by Hydroxyl Radical

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概要

• 論文の詳細を見る

• Oxidative depolymerization of chitosan induced by oxygen radical-generating systems was studied. Chitosan, but not chitin, was susceptible to oxidative depolymerization by hydroxyl radical generated through Cu(II)-ascorbate and ultraviolet-H_2O_2 systems in time- and concentration-dependent manners. Superoxide, H_2O_2, and singlet oxygen did not cause depolymerization. Metal ion chelators inhibited depolymerization by Cu(II)-ascorbate system, suggesting that the formation of chitosan-copper ion complex is important in the oxidative depolymerization. The molecular weight of the initial product during depolymerization was similar to that of glucosamine. The results suggest that copper ion could tend to coordinate to the NH_2-groups at the terminal of chitosan and hydroxyl radical generated at its binding site cut off chitosan at the near position.

• 社団法人日本農芸化学会の論文
• 1996-12-23

著者

• Irie Takao

  Department Of Life Science And Biotechnology Faculty Of Life And Environmental Science Shimane Unive

• TANAKA Yoshinori

  Wireless Communication Systems Lab. (L41), FUJlTSU LABORATORIES LTD.

• Tanaka Yoshinori

  Department of Medicine, Yamaguchi Prefectural Medical Center

• KONO Yasuhisa

  Department of Life Science and Biotechnology, Faculty of Life and Environmental Science, Shimane Uni

• SHIBATA Hitoshi

  Department of Life Science and Biotechnology, Faculty of Life and Environmental Science, Shimane Uni

• Kono Yasuhisa

  Department Of Bacteriology Faculty Of Medicine Tottori University

• TANIGAWA Takahiko

  Department of Surgery Minoh City Hospital

• SAWA Yoshihiro

  Department of Life Science and Biotechnology, Faculty of Life and Environmental Science, Shimane Uni

• MATSUI Yoshihisa

  Department of Life Science and Biotechnology Faculty of Life and Environmental Science Shimane Unive

• Tanigawa Takahiko

  Department Of Bacteriology Faculty Of Medicine Tottori University

• Shibata H

  Dept. Life Environ. Sci. Shimane Univ.

• Sawa Yoshihiro

  Dept. Life Environ. Sci. Shimane Univ.

• Sawa Yoshihiro

  Department Of Life Science And Biotechnology Shimane University

• Kono Y

  Department Of Life Science And Biotechnology Faculty Of Life And Environmental Science Shimane Unive

• Tanaka Y

  Fujitsu Lab. Ltd. Kawasaki‐shi Jpn

• Tanaka Yoshinori

  Department Of Bacteriology Faculty Of Medicine Tottori University

• Sawa Yoshihiro

  Dept. Appl. Biosci. And Biotech. Fac. Life And Environ. Sci. Shimane Univ.

• TANIOKA Shinichiro

  Department of Bacteriology, Faculty of Medicine, Tottori University

• Sakamoto Yoko

  Department Of Food Science And Technology College Of Bioresouce Sciences Nihon University

• Shibata Hitoshi

  Department Of Applied Biological Science Faculty Of Agriculture Shimane University

• Matsui Y

  Department Of Life Science And Biotechnology Faculty Of Life And Environmental Science Shimane Unive

• Sawa Yoshihiro

  Department Of Life Science And Biotechnology Faculty Of Life And Environmental Science Shimane Unive

• Tanioka Shinichiro

  Department Of Bacteriology Faculty Of Medicine Tottori University

• Sawa Yoshihiro

  Department Of Applied Bioscience And Biotechnology Faculty Of Life And Environmental Science Shimane University

• TANIGAWA Takahiko

  Department of Bacteriology, Faculty of Medicine, Tottori University

• SHIBATA Hitoshi

  Department of Agricultural Chemistry, Faculty of Agriculture, Shinshu University

• Matsui Yoshihisa

  Department of Agricultural Chemistry, Faculty of Agriculture, Shimane University

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