Scavenging Effect of Various Tea Extracts on Superoxide Derived from the Metabolism of Mutagens.
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- YEN Gow-Chin
- Department of Food Science, National Chung Hsing University
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- CHEN Hui-Yin
- Department of Food Science, National Chung Hsing University
Bibliographic Information
- Other Title
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- Scavenging Effect of Various Tea Extrac
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Abstract
We determine the superoxide formed in the self-degradation of mutagens activated by cytochrome enzymes and evaluated the scavenging effect of various tea extracts. Benzo[a]pyrene (B[a]P) and 2-amino-6-methyldipyrido(1,2-a:3′,2′-d)imidazole (Glu-P-1) each produced a large amount of superoxide after activation by cytochrome enzymes. However, 2-amino-3-methyl-imidazo(4,5-f)quinoline (IQ), 3-amino-1,4-dimethyl-5H-pyridol(4,3-b)indole (Trp-P-1) and alfatoxin B1 (AFB1) failed to generate a significant amount of superoxide. The addition of a tea extract to the reaction system marked inhibited the derivation of superoxide from Glu-P-1. However, the tea extracts showed weaker inhibition of the B[a]P-mediated formation of superoxide. Among the four teas tested, the oolong tea extract tended to exhibit the strongest inhibitory effect. Our results suggest that the chemopreventive efficacy of a tea extract is partly associated with its antioxidative activity.<br>
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 62 (9), 1768-1770, 1998
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390001206470925568
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- NII Article ID
- 110002679314
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- NII Book ID
- AA10824164
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- COI
- 1:CAS:528:DyaK1cXms1emsbk%3D
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- ISSN
- 13476947
- 09168451
- http://id.crossref.org/issn/09168451
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- NDL BIB ID
- 4576130
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- PubMed
- 9805379
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed