Literature DB >> 8673011

The specificity and product of quenching singlet oxygen by 2,2,6,6-tetramethylpiperidine.

L Y Zang1, F J van Kuijk, B R Misra, H P Misra.   

Abstract

The specificity of 2,2,6,6-tetramethylpiperidine to singlet oxygen was shown using Rose Bengal as a singlet oxygen generator, and Xanthine-Xanthine Oxidase and KO2 as the sources for the superoxide radical. The highest concentration of produced-singlet oxygen occurred at 25% of O2 by Rose Bengal photosensitization. The linewidth of the EPR signal for photosensitized nitroxyl radical, increasing solvent polarity. Deuterated solvents enlarge the EPR signal intensity in a dose-dependent manner. No EPR signal increase was observed in xanthine-xanthine oxidase reaction or KO2 systems, indicating that TEMP does not react with the superoxide anion. Thus, reaction of TEMP with 1O2 is highly specific.

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Year:  1995        PMID： 8673011

Source DB:  PubMed          Journal:  Biochem Mol Biol Int        ISSN： 1039-9712


  8 in total

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2.  Scavenging of superoxide anion radical by chaparral.

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6.  Activated toxicity of diesel particulate extract by ultraviolet a radiation in mammalian cells: role of singlet oxygen.

Authors:  Lingzhi Bao; An Xu; Liping Tong; Shaopeng Chen; Lingyan Zhu; Ye Zhao; Guoping Zhao; Erkang Jiang; Jun Wang; Lijun Wu
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7.  Multiple free-radical scavenging capacity in serum.

Authors:  Shigeru Oowada; Nobuyuki Endo; Hiromi Kameya; Masashi Shimmei; Yashige Kotake
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8.  Singlet oxygen scavenging activity and cytotoxicity of essential oils from rutaceae.

Authors:  Yoko Ao; Kazue Satoh; Katsushige Shibano; Yukari Kawahito; Seiji Shioda
Journal:  J Clin Biochem Nutr       Date:  2008-07       Impact factor: 3.114
  8 in total

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