Catalase-like activity of anion-exchange resin modified with metalloporphyrin in the oxidation of methyl alcohol and its application to the determination of hydrogen peroxide.

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概要

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• The catalase-like activity of anion-exchange resins (Amberlite IRA 900) modified with various metalloporphyrins in the acceleration of reaction (1) was evaluated by efficiency in color reaction (2) based on dye formation:<BR>H<SUB>2</SUB>O<SUB>2</SUB>+CH<SUB>3</SUB>OH\oversetcatalase\rightharpoonup2H<SUB>2</SUB>O+HCHO (1)<BR>HCHO+4-amino-3-hydrazino-5-mercapto-1,2,4-triazole+KIO<SUB>4</SUB>\oversetOH<SUP>−</SUP>\rightharpoonupDye(λ<SUB>max</SUB>=550 nm). (2)<BR>Amberlite IRA 900 modified with Mn<SUP>3+</SUP>–tetrakis(sulfophenyl)porphine (MnTPPS<SUB>r</SUB>) was found to exhibit the highest catalase-like activity among the resins tested and was applied as a mimesis of catalase to the determination of hydrogen peroxide by the use of reactions (1) and (2). The molar absorption coefficient for hydrogen peroxide was found to be 2.37×10<SUP>4</SUP> mol<SUP>−1</SUP> dm<SUP>3</SUP> cm<SUP>−1</SUP>, which is larger than twice that in the control catalase method (0.97×10<SUP>4</SUP> mol<SUP>−1</SUP> dm<SUP>3</SUP>cm<SUP>−1</SUP>). Interferences by common foreign substances tested were found to be small. MnTPPS<SUB>r</SUB> gave a better result than catalase in the determination of hydrogen peroxide.

• 公益社団法人 日本化学会の論文

著者

• Odo Junichi

  Faculty Of Pharmaceutical Sciences Okayama University

• TANAKA YOSHIMASA

  Faculty of Pharmaceutical Sciences, Okayama University

• Tanaka Yoshimasa

  Faculty Of Pharmaceutical Sciences Okayama University

• Mifune Masaki

  Faculty Of Pharmaceutical Sciences Okayama University

• Saito Yutaka

  Faculty Of Engineering Kanazawa University

• Tanaka Hisashi

  Faculty Of Engineering University Of Miyazaki

• Chikuma Masahiko

  Osaka College of Pharmacy

• Satouchi Mitsuko

  Faculty of Pharmaceutical Sciences, Okayama University

• Tai Takaaki

  Faculty of Pharmaceutical Sciences, Okayama University

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