检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:周先丽[1] 李映新[1] 温庆伟[1] 林兴[1] 黄仁彬[1]
出 处:《中国实验方剂学杂志》2013年第7期200-202,共3页Chinese Journal of Experimental Traditional Medical Formulae
基 金:广西科学研究与技术开发计划项目(桂科攻10124008-6;桂科攻0992003A-2);广西重点实验室基金(KFJJ2010-22);广西科技基础条件平台建设(12-97-20)
摘 要:目的:研究六月青一种木脂素苷(6R,7S,8S)-7α-[(β-glucopyranosyl)oxy]lyoniresinol的抗氧化活性。方法:采用酶标仪微量法和紫外-可见光分光光度法,以维生素C为阳性对照,分别测定(6R,7S,8S)-7α-[(β-glucopyranosyl)oxy]lyoniresinol对1-二苯基-2-三硝基苯肼(DPPH.)自由基、羟基自由基(.OH)和超氧阴离子自由基(O2-.)的清除能力。结果:(6R,7S,8S)-7α-[(β-glucopyranosyl)oxy]lyoniresinol对DPPH.(半数清除率IC50 8.11 mg.L-1),.OH(IC50 21.61 mg.L-1)和O2-.(IC5010.30 mg.L-1)均具有清除作用,且呈明显的量效关系。结论:(6R,7S,8S)-7α-[(β-glucopyranosyl)oxy]lyoniresinol在体外有明显的抗氧化作用。Objective: To study the antioxidant activity of (6R, 7S, 8S) -7a- [ (β-glucopyranosyl) oxy ] lyoniresinol from Tarphochlamys affinis. Method: With microtitration assay and ultra-violet-visible (UV-Vis) spectrophotometry, effect of (6R, 7S, 8S) -7a- [ (β-glucopyranosyl) oxy] lyoniresinol on clearance rate of 1, 1-diphenyl-2-picrylhydrazyl radical 2, 2-diphenyl-1- (2, 4, 6 trinitrophenyl)hydrazyl (DPPH·), hydroxyl radical -OH and superoxide anion O2- were determined with Vitamin C(Vc) as positive control. Result: (6R, 7S, 8S) -7a- [ (β-glucopyranosyl) oxy] lyoniresinol had scavenging capability against DPPH ,(half clearance rate concentration IC50 8.11 mg·L-l), .OH(IC50 21.61 mg·L-1) and O2-·( IC50 10.30 mg .L-1) radicals and has a good dose-responses with the concentration. Conclusion: (6R, 7S, 8S) -7a- [ (fl-glucopyranosyl) oxy] lyoniresinol has the stronger antioxidant activity.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.30