Antioxidant activities of Physalis peruviana.
Physalis peruviana (PP) is a widely used medicinal herb for treating cancer, malaria, asthma, hepatitis, dermatitis and rheumatism. In this study, the hot water extract (HWEPP) and extracts prepared from different concentrations of ethanol (20, 40, 60, 80 and 95% EtOH) from the whole plant were evaluated for antioxidant activities. Results displayed that at 100 mug/ml, the extract prepared from 95% EtOH exhibited the most potent inhibition rate (82.3%) on FeCl2-ascorbic acid induced lipid peroxidation in rat liver homogenate. At concentrations 10-100 microg/ml, this extract also demonstrated the strongest superoxide anion scavenging and inhibitory effect on xanthine oxidase activities. In general, the ethanol extracts revealed a stronger antioxidant activity than alpha-tocopherol and HWEPP. Compared to alpha-tocopherol, the IC50 value of 95% EtOH PP extract was lower in thiobarbituric acid test (IC50=23.74 microg/ml vs. 26.71 microg/ml), in cytochrome c test (IC50=10.40 microg/ml vs. 13.39 microg/ml) and in xanthine oxidase inhibition test (IC50=8.97 microg/ml vs. 20.68 microg/ml). The present study concludes that ethanol extracts of PP possess good antioxidant activities, and the highest antioxidant properties were obtained from the 95% EtOH PP.
Wu
Sue-Jing
SJ
Graduate Institute of Natural Products, Kaohsiung Medical University, Taiwan.
Ng
Lean-Teik
LT
Huang
Yuan-Man
YM
Lin
Doung-Liang
DL
Wang
Shyh-Shyan
SS
Huang
Shan-Ney
SN
Lin
Chun-Ching
CC
D000818:Animals; D000975:Antioxidants / Q000302:isolation & purification / Q000494:pharmacology*; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D032321:Physalis; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology; D018514:Plant Structures; D051381:Rats; D017208:Rats, Wistar
D000975:Antioxidants; D010936:Plant Extracts