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Reactive oxygen species (ROS) and reactive nitrogen species (RNS, e.g. nitric oxide, NO(*)) are well recognised for playing a… Expand Oxygen-free radicals, more generally known as reactive oxygen species (ROS) along with reactive nitrogen species (RNS) are well… Expand Traditionally, reactive oxygen intermediates (ROIs) were considered to be toxic by-products of aerobic metabolism, which were… Expand A method for the screening of antioxidant activity is reported as a decolorization assay applicable to both lipophilic and… Expand An imbalance between oxidants and antioxidants in favour of the oxidants, potentially leading to damage, is termed ‘oxidative… Expand The recent explosion of interest in the bioactivity of the flavonoids of higher plants is due, at least in part, to the potential… Expand A simple, automated test measuring the ferric reducing ability of plasma, the FRAP assay, is presented as a novel method for… Expand The antiradical activities of various antioxidants were determined using the free radical, 2,2-Diphenyl-1-picrylhydrazyl (DPPH… Expand Metabolism, like other aspects of life, involves tradeoffs. Oxidant by-products of normal metabolism cause extensive damage to… Expand METHODS for measuring antioxidants and appraising antioxidant activity appear to be of two general types. If the chemical nature… Expand