【摘要】 目的测定丹参糖蛋白4种浓度的乙醇分级沉淀物对自由基的清除作用。方法用可见分光光度法测定。结果丹参糖蛋白的4种乙醇分级沉淀物对DPPH,.OH,O2-.自由基均有明显的清除作用,清除率可达到15.3%～86.9%,且量效关系明显。结论丹参糖蛋白是一种良好的自由基清除剂。更多还原

【Abstract】 Objective To determine the free radicals scavenging activities of glycoproteins from Salvia miltiorrhiza Bunge fractionally precipitated with the different concentrations of ethanol.Methods Visual spectrophotometry was adopted.Results Four glycoproteins fractionally precipitated all had noticeable elimination effects on three free radicals of DPPH,.OH,O2-.and existed an obvious dose-effect relationship.The elimination rate was between 15.3% and 86.9%.Conclusion Glycoproteins from Salvia miltiorrhiza Bunge is a favorable free radical scavenger.更多还原