摘要
采用丙酮为溶剂,通过浸泡龙眼叶的方法得到龙眼叶丙酮提取物。以没食子酸为对照品测定该提取物的总酚含量,并采用ABTS体系评价眼叶丙酮提取物的抗氧化活性,探讨抗氧化活性和总酚含量之间的关系。龙眼叶丙酮提取物在较低药液浓度时即对ABTS自由基表现出一定的清除能力,且该清除能力与药液浓度呈正相关的关系。在最高药液浓度时,龙眼叶丙酮提取物对ABTS自由基的清除率达到74. 94%。此外,龙眼叶丙酮提取物具有良好的还原能力。
The acetone extract of leaf of Dimocarpus longan Lour. was obtained by using acetone as solvent. The total phenolics content was determined with gallic acid as reference substance. The ABTS system was chosen to evaluate the antioxidant activity of the extract, and the relationship between the antioxidant activity and total phenolics content was discussed. The extract exhibited a good scavenging activity for ABTS radicals, and a direct correlation was found between the scavenging activity and concentration of the extract. At the highest concentration of extract, the extract exhibited a scavenging activity for ABTS radicals as high as 74.94%. Besides, acetone extract of leaf of Dimocarpus longan Lour. showed potent reducing power.
作者
李培源
霍丽妮
贾智若
莫媛媛
黄晓东
LI Pei-yuan;HUO Li-ni;JIA Zhi-ruo;MO Yuan-yuan;HUANG Xiao-dong(College of Pharmacy,Guangxi University of Chinese Medicine,Guangxi Nanning 530001;The 56^th Middle School,Guangxi Nanning 530001,China)
出处
《广州化工》
CAS
2019年第3期39-40,59,共3页
GuangZhou Chemical Industry
基金
广西自然科学基金(2017GXNSFAA198335)
壮瑶药协同创新中心(桂教科研[2013]20号)
广西壮瑶药重点实验室(桂科基字[2014]32号)
广西重点学科壮药学(桂教科研[2013]16号)
广西八桂学者中药创新理论与药效研究(J13162)
广西中医药大学校级课题(2017JQ001)
广西中医药大学中药学优势学科建设专项课题(ZYX2017003)
杨世林教授团队人才培养建设项目(YSL17004)
关键词
龙眼叶
ABTS
还原能力
总酚含量
Dimocarpus longan Lour. leaf
ABTS
reducing power
total phenolics
