刘霞 李伟 范小娜
摘要:加入不同浓度的脐橙(Citrus sinensis Osbeck)黄酮,研究脐橙黄酮体外清除活性氧自由基邻苯三酚的作用,并与维生素C、体积分数为50%的乙醇的作用进行比较。结果表明,脐橙黄酮浓度为3.01 mg/mL时对邻苯三酚的清除率与1 mg/mL维生素C相比无显著差异(P>0.05),与体积分数为50%的乙醇及去离子水相比差异极显著(P<0.01)。脐橙黄酮具有较强地清除体外活性氧自由基的作用。
关键词:脐橙(Citrus sinensis Osbeck);黄酮;抗氧化;活性氧自由基
中图分类号:S666.4文献标识码:A文章编号:0439-8114(2012)14-3050-02
Study on in vitro Antioxidation of Navel Orange Flavonoids
LIU Xiaa,LI Weib,FAN Xiao-nac
(a. College of Pharmacy;b. Rehabilitation Institute;c. Scientific Research Department,Gannan Medical University,Ganzhou 341000,
Jiangxi,China)
Abstract: The in vitro reactive oxygen species scavenging activity of navel orange(Citrus sinensis Osbeck) flavonoids was studied by determining the autoxidation rate of pyrogallol after different concentration of navel oranges flavonoids was added. Vitamin C and 50% alcohol was used as compare. The results revealed no significant difference (P>0.05) between the antioxidation of 1 mg/mL vitamin C and 3.01 mg/mL navel oranges flavonoids; however, the antioxidation of navel oranges flavonoids was very significantly different(P<0.01) from that of 50% ethanol and CK, indicating that navel oranges flavonoids had strong in vitro ability in scavenging reactive oxygen species.
Key words: navel oranges; flavonoids; antioxidation; superoxide radical
赣南脐橙(Citrus sinensis Osbeck)营养丰富,含有人体所必需的各类营养成分。赣南气候温暖,雨水充沛,昼夜温差大,具有得天独厚的气候资源优势,非常适宜种植脐橙,脐橙皮中含有丰富的天然黄酮类化合物[1]。研究表明黄酮类化合物具有降脂、抗血栓、抗氧化、抗衰老、抗心率失常等作用,因而广泛用于医药、食品等行业,具有极广的开发应用前景[2-4]。研究通过比较维生素C、乙醇和脐橙黄酮对邻苯三酚的清除率,并研究不同浓度脐橙黄酮清除活性氧自由基的作用,旨在为更加深入地研究脐橙黄酮的作用提供一定的依据。
1材料与方法
1.1材料
1.1.1主要仪器UV-1601紫外可见分光光度计购自日本岛津公司,EYELAN-1001旋转蒸发仪购自上海爱明仪器有限公司,SHZ-JIIA型循环水式真空泵购自西安波意尔精密仪器有限公司。
1.1.2原料与试剂橙皮粉为市售赣南脐橙果皮在50 ℃恒温烘干后粉碎过50目筛所得,纯度为99.0%的橙皮苷标准品购于中国药品生物制品检定所,三羟甲基氨基甲烷(Tris)、乙二胺四乙酸(EDTA)、邻苯三酚、维生素C、无水乙醇、NaOH、HCl均为分析纯。……