食品科学 ›› 2007, Vol. 28 ›› Issue (4): 292-295.

• 分析检测 • 上一篇    下一篇

番石榴中VC的高效液相色谱分析

 刘胜辉, 臧小平, 魏长宾   

  1. 中国热带农科院南亚热带作物研究所; 中国热带农科院南亚热带作物研究所 广东 湛江 524091; 广东 湛江 524091;
  • 出版日期:2007-04-15 发布日期:2011-12-31

Assay Study on VC in Guava Fruits by High Performance Liquid Chromatography

 LIU  Sheng-Hui, ZANG  Xiao-Ping, WEI  Chang-Bin   

  1. South Subtropical Crops Research Institute of Scutas,Chinese Acadenny of Tropic Agricultural Sciences,Zhanjiang 524091,China
  • Online:2007-04-15 Published:2011-12-31

摘要: 采用高效液相色谱法,以0.1%的磷酸作为流动相,采用三种不同的提取液(3%的偏磷酸、3%的偏磷酸+8%乙酸、0.1%的草酸)对番石榴不同的果实部位的VC(L-抗坏血酸)含量进行了测定,结果表明:3%的偏磷酸+8%乙酸作为浸提液效果最好,对于三次取样的结果相对标准偏差最低(RSD=1.6%),回收率最高为98.5%;3%的偏磷酸提取效果次之;0.1%的草酸溶液提取效果最差,RSD=28.4%,回收率也很低(72.5%)。此外,不同部位的番石榴果肉VC含量也不一致,以靠近果皮的果肉含量最高,其次为果心,中部果肉含量最低。

关键词: 番石榴, VC, 高效液相色谱

Abstract: Determination of vitamin C(V/C)in guava fruits by HPLC with 0.1% orthophosphoric acid as the mobile phase was studied.Three different solutions were used to extract the VC.The method with 3% metaphosphoric acid-8% acetic acid showed high mean recoveries(98.5 %),while the LC-extraction method with 0.1% oxalic acid was proved to be unacceptable in some cases with mean recoveries as low as 72.5%.The good precision(RSD=1.6%)is achieved with the metaphosphoric acid-acetic acid LC--extraction method for determining VC in guava fruits with recovery as high as 98.5%,as a perfect routine analysis method.The content of VC in the fruit varied with different parts.The pulp close with the pericarp contained the higest content as 220.4mg/100g,while the middle part the lowest with only 85.78mg/100g.

Key words: guava fruits, vitamin C, HPLC(high performance liquid chromatography)