Comparison of antioxidant activity in enzyme-independent system of six Stachys species

The antioxidant activity of six Stachys species native to Hungary in an enzyme-independent lipid-peroxidation system was examined. The methanolic extracts were found to be more effective than the controls a-tocopherol succinate and ascorbic acid. The following components were determined by spectrophotometric analysis: hydroxycinnamic acid derivatives, phenols content and flavonoids. (c) 2006 Elsevier B.V. All rights reserved.