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Chromatographic determination of phenolic compounds (A) and their corresponding anti-oxidant activities (B) in extracts from thiamine-treated grapevine plants. Detection was done at 280 nm for phenolic compounds (LC-UV) and at 412 nm for their respective antioxidant activities after post-column reaction with (ABTS[*][+]) (LC-AOx). The whole experiment was repeated 3 times with similar results.
