Thiagarajan G, Chandani S, Sundari C S, Rao S H, Kulkarni A V, Balasubramanian D
Hyderabad Eye Research Foundation, L. V. Prasad Eye Institute, Hyderabad 500 034, India.
Exp Eye Res. 2001 Sep;73(3):393-401. doi: 10.1006/exer.2001.1049.
Aqueous extracts of green and black tea are shown to quench reactive oxygen species such as singlet oxygen, superoxide and hydroxyl radicals, prevent the oxidative cross-linking of test proteins and inhibit single strand breakage of DNA in whole cells. They are also seen to be able to counteract the oxidative insult mounted by cigarette smoke. In rats in which cataract was induced by subcutaneous injection of selenite, administration of green or black tea extracts led to a retardation of the progression of lens opacity, suggesting the potential cataracto-static ability of tea.
绿茶和红茶的水提取物已显示出能淬灭活性氧，如单线态氧、超氧阴离子和羟基自由基，防止受试蛋白质的氧化交联，并抑制全细胞中DNA的单链断裂。它们还被认为能够抵消香烟烟雾造成的氧化损伤。在通过皮下注射亚硒酸盐诱导白内障的大鼠中，给予绿茶或红茶提取物可延缓晶状体混浊的进展，表明茶具有潜在的抗白内障能力。
