紫外分光光度法测定白千层枝和叶总三萜酸含量  

Ultra-violet Spectrophotometric Determination of Triterpenoidic Acid in the Stems and Leaves of Melaleuca leucadendra

作　　者：范超君[1,2] 鲍长余[1,2] 毕和平[1,2] 陈湛娟[1,2] 

机构地区：[1]海南师范大学省部共建热带药用植物化学教育部重点实验室 [2]化学与化工学院,海南海口571127

出　　处：《林产化学与工业》2011年第4期75-78,共4页Chemistry and Industry of Forest Products

基　　金：海南省自然科学基金项目(20804)

摘　　要：以5%香草醛-冰乙酸和高氯酸为显色剂,测定白千层枝和叶中三萜酸的总含量。熊果酸对照品在0.20～1.60 mg/L范围内呈良好线性关系,其回归方程为A=0.1548C+0.0286,r=0.999 3。结果表明白千层枝中三萜酸的总质量分数约为1.096%,叶中三萜酸的总质量分数约为1.017%。The total content of triterpenoidic acid in the stems and leaves of Melaleuca leucadendra Linn.was determined using 5 % vanillin-acetic acid and perchloric acid as color system.Ursolic acid had a better linear relationship in the range of 0.20-1.60 mg/L and its regression equation was A=0.154 8C＋0.028 6（r=0.999 3）.The results showed that the total mass fractions of triterpenoidic acid in the stems and leaves of M.leucadendra were 1.096 % and 1.017 % respectively.

关 键 词：白千层 三萜酸 紫外分光光度法 

分 类 号：TQ351[化学工程]