树上虾丙酮提取物抗氧化活性和还原能力研究

Antioxidant Activity and Reducing Power of Acetone Extract of Pholidota Cantonensis Rolfe

本论文以丙酮为溶剂得到树上虾丙酮提取物,选择ABTS体系来评估其抗氧化能力并测定其还原能力。树上虾丙酮提取物对ABTS自由基清除率与药液浓度有关,在最高药液浓度2.0 mg/mL时,提取物对ABTS自由基的清除率达到了98.3%。值得注意的是,在很低浓度时树上虾丙酮提取物表现出了很好的清除率。同时,树上虾丙酮提取物对ABTS自由基的清除率与时间有关。树上虾丙酮提取物在不同药液浓度时的还原能力测定结果表明,树上虾丙酮提取物的还原能力与药液浓度有关,具有很好的还原能力。

The acetone extract of Pholidota cantonensis Rolfe was obtained using acetone as solvent.The ABTS system was chosen to evaluate the antioxidant ability of the extract,and the reducing power of the extract was determined.There is relationship between the clearance rate of the extract against the ABTS radicals and the concentration of the extract.At a high concentration of 2.0 mg/mL,the extract shows a high clearance rate of 98.3%.Especially,the acetone extract of Pholidota cantonensis Rolfe shows good ABTS radical clearance rate at a low concentration of extract.Meanwhile,relationship is also found between the clearance rate of the extract against the ABTS radicals and the reaction time.The reducing power results suggest that,the concentration of the extract has effecs on the extract's reducing power.The acetone extract of Pholidota cantonensis Rolfe shows excellent reducing power.