Molecular design of antibrowning agents: antioxidative tyrosinase inhibitors

被引:115
作者
Kubo, I [1 ]
Chen, QX [1 ]
Nihei, K [1 ]
机构
[1] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA
关键词
antibrowning; tyrosinase inhibitory activity; dodecyl gallate;
D O I
10.1016/S0308-8146(02)00418-1
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Dodecyl (C-12) gallate (3,4,5-trihydroxybenzoate) was found to inhibit the oxidation of L-3,4-dihydroxyphenylalanine (L-DOPA) catalyzed by tyrosinase. This inhibition is a slow and reversible reaction with residual enzyme activity. The inhibition kinetics analyzed by Lineweaver-Burk plots revealed that dodecyl (lauryl) gallate is an uncompetitive inhibitor (K-IS=0.636 mM). Gallic acid, the parent compound of dodecyl gallate, acts as a reducing agent for o-quinone produced by the enzymic oxidation. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:241 / 247
页数:7
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