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NCUEIR > College of Science > biotech > Periodical Articles >  Item 987654321/13203

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/13203

Title: Antioxidant Effects of Dopamine and Related Compounds
Authors: Yen, Gow-Chin;Hsieh, Chiu-Lan
Contributors: 生物技術研究所
Keywords: Antioxidant;Dopamine;Tyramine;Noradrenaline;Reactive oxygen species
Date: 1997-10
Issue Date: 2012-08-07T06:56:27Z
Publisher: Japan Society for Bioscience, Biotechnology, and Agrochemistry
Abstract: The antioxidant and free radical scavenging effects of dopamine, noradrenaline, tyramine, and tyrosine were investigated and compared with alpha-tocopherol. The antioxidant effect of dopamine and its related compounds on peroxidation of linoleic acid were in the order of dopamine > alpha-tocopherol = tyramine > tyrosine > noradrenaline as measured by the thiocyanate method. These amine compounds had reducing power, and a scavenging effect on reactive oxygen species, i.e., superoxide anion and hydroxyl radical. The results for reducing power and scavenging effect of these amine compounds had a similar trend as their inhibition of linoleic acid peroxidation. The antioxidant activity of these amine compounds in soybean oil was also evaluated by the Rancimat method. The induction time to reach 100 meq/kg peroxide value (POV) of soybean oil for dopamine, alpha-tocopherol, tyramine, tyrosine, noradrenaline, and control were 9.0, 8.2, 8.0, 6.4, 4.6, and 4.3 h, respectively. The antioxidant efficacy of amine compounds seems to be correlated with the numbers of hydroxy groups and their position on the phenolic ring.
Relation: Bioscience, Biotechnology, and Biochemistry, 61(10): 1646-1649
Appears in Collections:[biotech] Periodical Articles

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