Reagents
supplied by Tianjin Kaitong Chemical Reagent Co.,
Ltd., China; (total antioxidant case),
(superoxide anion radical scavenging case),
(active oxygen scavenging case): supplied by Nanjing
Jiancheng Bio-project Institute, China; DPPH: SigmaAldrich
Chemie GmbH, Riedstr 2, D-89555 Steinheim,
Germany.