APP下载

天兰草茎、叶、果粗提物中马缨丹烯A含量测定与抗菌活性研究

2014-06-28朱峰,卢卫红

湖北农业科学 2014年7期

朱峰,卢卫红(等)

摘要:从天兰草(Lantana camara L.)分离纯化得到马缨丹烯A(Lantadene A,LA),通过1H NMR谱对其结构进行了鉴定。以LA为标准品,采用紫外分光光度法测定了天兰草茎、叶和果中LA的含量。结果表明,天兰草茎、叶和果干粉中LA含量分别为1.49、3.43和2.74 mg/g。纸片琼脂扩散法抗菌试验结果表明,天兰草茎、叶和果粗提物均对金黄色葡萄球菌表现出一定程度的抑菌活性,其抑菌活性与LA含量呈正比关系。

关键词:天兰草(Lantana camara L.);马缨丹烯A;含量测定;紫外分光光度法;抗菌活性

中图分类号:Q949.95,S58 文献标识码:A 文章编号:0439-8114(2014)07-1657-03

Determination of Lantadene A and Antibacterial Activity of the Crude Extracts of the Stems,Leaves and Fruits of Lantana camara L.

ZHU Fenga,LU Wei-hongb,HUANG Mei-zhena,WU Jing-shua,CHEN Xina

(Foshan University, a.Department of Chemistry and Chemical Engineering;

b.School of Life Science,Foshan 528231,Guangdong, China )

Abstract:Pure lantadene A(LA) was isolated from the leaves of Lantana camara L., and its structure was identified by 1H NMR. The content of LA in the stem, leave and fruit were determined by ultraviolet spectrophotometry with LA as standard sample. The contents of LA in the stem, leave and fruit of Lantana camara L. were 1.49,3.43 and 2.74 mg/g, respectively. In the antibacterial assay by agar diffusion method, the crude extracts of the stem, leave and fruit of Lantana camara L. showed moderate activity against staphylococcus aureus. The results indicated that the antibacterial activity was positively correlated with the content of LA in the crude extracts of the stem, leave and fruit of Lantana camara L.

Key words: Lantana camara L.; lantadene A; content determination; ultraviolet spectrophotometry; antibacterial activity

长期以来,抗生素作为临床用药在治疗人类的疾病中起着重要作用,但抗生素的滥用导致的病原菌的耐药性以及新病原菌的泛滥,已被认为是威胁人类健康的全球性问题。金黄色葡萄球菌(Staphylococcus aureus)是人类的一种重要病原菌,已产生了耐药性,新出现的耐甲氧西林金黄色葡萄球菌(MRSA)被称为超级细菌,几乎能抵抗人类现在所有的药物,现在仅有万古霉素对它有效。因此,人类迫切需要从自然界中寻找到具有特殊疗效的新药。

天兰草(Lantana camara L.)学名五色梅,马鞭草科马缨丹属,是一种生长于热带和亚热带的灌木,又名臭草,原产美洲热带,我国南北都有引种栽培,以广东、福建、台湾、浙江、云南、四川等省区为多,华南地区的荒郊野外多有大片野生分布,其根、茎、叶、花可作药用,具有清热解毒、散解止痛、祛风止痒之功效,能治感冒高热、久热不退、痢疾、肺结核、哮喘性支气管扩张、高血压等病症。茎叶煎汤洗治湿疹、疥癞毒疮、皮炎、皮肤痒、臃肿,捣烂敷患处能治跌打筋伤[1]。……

登录APP查看全文