摘要
金花茶叶含有丰富的黄酮类化合物。以70%乙醇为提取溶剂,对14种金花茶叶中的黄酮进行超声波提取,并以芦丁为对照品,采用紫外分光光度法于273 nm处测定吸光度,得出各种金花茶叶总黄酮的含量并进行了比较。结果表明:不同种金花茶叶黄酮的含量差异较大,平果金花茶中新叶的总黄酮含量(22.011%)最高,而东兴金花茶中一年叶龄叶子总黄酮含量(1.518%)最低;同种而不同叶龄的金花茶叶总黄酮含量变化较大。新叶的总黄酮含量较一年生叶和二年生叶的含量高。平果金花茶和柠檬黄金花茶叶中黄酮含量较高,具有潜在的研究与开发价值。
There are rich flavonoids in leaves of Camellia sect.Chrysantha.The total flavonoids content in leaves of 14 species of Camellia sect.Chrysantha were extracted using 70% ethanol as extracting solvent by ultrasonic wave and were determined by ultraviolet spectrophotometry in this study,with rutin as a standard sample at 273nm.The content differences among species were analyzed.The results showed that the total flavonoids content in new leaves of C.pingguoensis（22.011%）was highest and the lowest was the one-year-old leaves of C.tunghinensis（1.518%）.There were significant differences of the total flavonoids in different leaf ages of the same species.The total flavonoids content in new leaves is higher than that in one-year-old or two-year-old leaves.C.pingguoensis and C.limonia had the potential value of research and exploit with higher total flavonoids content.
出处
《广西植物》
CAS
CSCD
北大核心
2011年第2期281-284,共4页
Guihaia
基金
国家自然科学基金(31040014)
广西留学回国人员科学基金(桂科基0575008)
广西科技攻关项目(桂科攻0992003B-36)
中国科学院知识创新工程重要方向项目(KSCX2-YW-Z-0913)~~
关键词
金花茶组
超声波提取
紫外分光光度法
不同叶龄
总黄酮
含量测定
Camellia sect.Chrysantha
ultrasonic extraction
ultraviolet spectrophotometry
different leaf age
total flavonoids
content determination
