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白及多糖琥珀酸酯的抗氧化活性研究
引用本文:王虎成,孙燕,俞樱露,刘江云,蔡培烈,杨世林.白及多糖琥珀酸酯的抗氧化活性研究[J].苏州大学学报(自然科学版),2012(5):597-599,618.
作者姓名:王虎成  孙燕  俞樱露  刘江云  蔡培烈  杨世林
作者单位:苏州大学医学部药学院,江苏苏州215123
基金项目:国家“十一五”科技支撑计划项目(2009BA174B02); 江苏高校优势学科建设工程资助项目(PAPD)R961.1
摘    要:目的研究琥珀酸酯改性白及多糖的抗氧化活性。方法分别采用Fenton法和邻苯三酚自氧化法测定不同取代度(DS)白及多糖琥珀酸酯BT-2(DS=0.38)、BT-3(DS=0.69)、BT-4(DS=0.85)对OH.和O2-.的抗氧化活性。结果白及多糖琥珀酸酯对OH.的半数清除率浓度(mg/ml)依次为1.48±0.01(BT-4)、2.65±0.01(BT-3)、2.79±0.02(BT-2);对O2-.的半数清除率浓度(mg/ml)依次为1.38±0.06(BT-4)、6.44±0.02(BT-3)、21.33±0.13(BT-2)。结果显示,不同取代度白及多糖琥珀酸酯对OH.和O2-.的清除能力大小依次为BT-4〉BT-3〉BT-2(P〈0.05)结论白及多糖琥珀酸酯的抗OH.和O2-.活性随取代度增大而显著增强。

关 键 词:白及  白及多糖琥珀酸酯  取代度  抗氧化活性

Study on the antioxidant activities of succinated glucomannans from Bletilla striata
WANG Hu-cheng,SUN Yan,YU Ying-lu,LIU Jiang-yun,CAI Pei-lie,YANG Shi-lin.Study on the antioxidant activities of succinated glucomannans from Bletilla striata[J].Suzhou University Journal of Medical Science,2012(5):597-599,618.
Authors:WANG Hu-cheng  SUN Yan  YU Ying-lu  LIU Jiang-yun  CAI Pei-lie  YANG Shi-lin
Institution:(School of Pharmaceutical Sciences,Medical College,Soochow University,Jiangsu Suzhou 215123,China)
Abstract:Objective To study the antioxidant activities of succinated glucomannan from Bletilla striata.Methods Antioxidant activities of succinated glucomannan with different degree of dubstitution(DS) including BT-2(DS=0.38),BT-3(DS=0.69) and BT-4(DS=0.85) against OH·and O-2·were measured by Fenton reaction and autoxibation of pyrogallic acid.Results The IC50(mg/ml) of succinated glucomannans against OH· was measured to be 1.48±0.01(BT-4),2.65±0.01(BT-3),2.79±0.02(BT-2);while their IC50(mg/ml) against O-2·was determined to be 1.38±0.06(BT-4),6.44±0.02(BT-3),21.33±0.13(BT-2),respectively.Conclusion The antioxidant activities of succinated glucomannans against OH·and O-2· were increased apparently with increasing DS.
Keywords:Bletilla striata  succinated glucomannan  degrees of substitution  antioxidant activities
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