摘要：The antioxidant enzymatic activities of Dendrocalamopsis oldhami bamboo-leaf extracts (BLE) in cholesterol-fed rats and an index of lipid peroxidation were determined. In the BLE groups, compared with the control group, significant decrease was observed in superoxide dismutase (SOD) activity in the livers and kidneys, catalase (CAT) activity in the kidneys, and glutathione peroxidase (GSH-Px) activity in the liver and kidneys. Also, significant decrease was observed in the quantities of thiobarbituric acid reactive substances (TBARS) in the liver and kidneys of the BLE groups. A battery of test methods was used to assess the in vitro antioxidant activities of the extracts. The half maximal inhibitory concentration (IC50) value was found to be 2.36 mg/g by determining the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities. The total antioxidant activity was 84 mg vitamin C equivalent in per gram BLE (mg VCE/g BLE), and the reducing power was 74 mg quercetin equivalent in per gram BLE (mg QE/g BLE). It was concluded that sugars, proteins, and flavonoids, which made up 18, 16, and 3.7% of the extract, respectively, could have contributed to the production of the antioxidant benefits.
