食品科学 ›› 2006, Vol. 27 ›› Issue (6): 187-189.

• 分析检测 • 上一篇    下一篇

阳极溶出伏安法间接测定大蒜中的大蒜辣素

 崔钢, 裘爱泳, 胥传来   

  1. 江南大学食品学院; 盐城工学院
  • 出版日期:2006-06-15 发布日期:2011-09-22

Indirect Determination of Allicin in Garlic by Anodic Striping Voltammetry

 CUI  Gang, QIU  Ai-Yong, XU  Chuan-Lai   

  1. 1.College of Food Science, Southern Yangtze University, Wuxi 214036, China; 2.Yancheng Institute of Technology, Yancheng 224003, China
  • Online:2006-06-15 Published:2011-09-22

摘要: 报道了大蒜中大蒜辣素含量的阳极溶出伏安测定新方法。在pH5~6的50%乙醇体系中,用过量硝酸铅沉淀大蒜样品氧化产物中的SO42-,直接移取上清夜,在电化学分析仪上用阳极溶出伏安法测定过量的Pb2+浓度,从而间接测定大蒜辣素含量。结果表明:本法测得大蒜中大蒜辣素含量为0.38%,方法的相对标准偏差(RSD)为1.42%~2.39%,方法与重量法结果对照,简单快速,可用于实际样品分析。

关键词: 大蒜辣素, 阳极溶出伏安法, 测定

Abstract: Indirect determination of allici by anodic stripping voltammetry(ASV) in garlic sample was described. In the medium of 50% alcohol(V/V, pH5~6), allicin was oxided into SO42- with oxidizing agent HNO3, and after precipitation of PbSO4, the surplus amount of Pb2+ in the solution was determined by ASV in an electrochemical analysis instrument. It was used for real sample analyses. The results showed that the content of allicin in garlic is 0.38%, the relative standard derivation (RSD, n=6) is 1.42%~2.39%.This method is also faster and more accurate compared with gravimetric method, is fit for real samplea nalyses.

Key words:  , allicin; anodic stripping voltammetry; determination;