Abstract:
Antioxidant capacities of Pluchea indica Less. Tea that obtained from Ban Tha Sorn community enterprise, Amphur Khlung , Chantaburi province were conducted by assays for radical scavenging against superoxide anion and hydroxyl radical as wall as the modulative effect of the extract on the activity of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione reductase (GR) was also determined. The results showed that P. indica tea extract (PITE) exhibited good free radical scavenging activity both on superoxide and hydroxyl radicals in a concentration dependent manner with EC50 = 266.72 and 196.38 µg/ml, respectively. In addition, PITE could efficiently activate SOD activity. Conversely, it did not affect to the other 3 antioxidant enzymes. This study makes us to know the biological mechanism of PITE on the activity of various enzymes that relate to the biotrandformation of reactive oxygen species (ROS.) PITE has beneficial effects in prevention or treatment various ROS-induced chronic degenerative diseases.