吉首大学学报(自然科学版)

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紫外-可见光分光光度法测定八月瓜果皮齐墩果酸

符智荣,李雪峰,张晓旭,欧阳玉祝,吴梦媛   

  1. (1.吉首大学师范学院,湖南 吉首 416000;2.吉首大学化学化工学院,湖南 吉首 416000)
  • 出版日期:2019-01-25 发布日期:2019-01-26
  • 通讯作者: 欧阳玉祝(1956—),男,吉首大学化学化工学院教授,硕士,主要从事天然产物化学研究.E-mail:ouyanghxhg@163.com.
  • 基金资助:

    湖南省湘西自治州科技计划项目(州财企函[2013]7号)

Content Measurement of Oleanolic Acid in Akebia Trifoliata Pericarp by Ultraviolet-Visible Spectrophotometry

FU Zhirong,LI Xuefeng,ZHANG Xiaoxu,OUYANG Yuzhu,WU Mengyuan   

  1. (1.Normal College,Jishou Univeristy,Jishou 416000,Hunan China;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2019-01-25 Published:2019-01-26

摘要:

为了建立齐墩果酸的紫外光谱分析方法,以香草醛-冰醋酸为显色剂,545 nm为测定波长,用标准比较法考察了齐墩果酸含量的紫外光谱分析条件.结果表明,用0.3 mL 5%香草醛-冰醋酸做显色剂,70 ℃下恒温显色15 min,8.00 mg/L齐墩果酸标准溶液的实验测定值为8.02 mg/L;齐墩果酸在2.00~16.00 mg/L范围内线性关系良好,相关系数为0.999 8.以质量比计,用本方法测定的八月瓜果皮中齐墩果酸含量为3.70 mg/g,平均加标回收率为101.06%,RSD为1.22%;精密度、重复性和稳定性实验的RSD分别为0.02%,0.29%,0.29%.

关键词: 紫外-可见光分光光度法, 八月瓜, 齐墩果酸

Abstract:

In order to establish a spectrographic method of measuring oleanolic acid,conditions of UV-spectrophotometry analysis was investigated with vanillin-glacial acetic acid as chromogenic reagent and 545 nm as the determination wavelength.The results showed that the measured concentration value of 8.00 mg/L oleanolic acid standard solution was 8.02 mg/L with 0.3 mL vanillin-glacial acetic acid as chromogenic agent,duration was 15 min under 70 ℃,linear relation of the oleanolic acid was good in 2.00~16.00 mg/L,and the correlation coefficientwas 0.999 8.Content of oleanolic acid in Akebia trifoliata pericarp was 3.70 mg/g by this analysis method.Standard addition recovery rate was 101.06%,and its relative standard deviation (RSD) was 1.22%.RSD of precision,repeatability and stability was 0.02%,0.29% and 1.29%,respectively.

Key words: UV-Spectrophotometry, Akebia trifoliata, oleanolic acid

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