Food and Fermentation Industries

Determination of 20 Water-soluble Pigments in Beverages and Candy by Polyamide

  • Gu Yu-xiang ,
  • Ge Yu ,
  • Yin Jie ,
  • Yu Cheng-hua ,
  • Lu Zhi-yun ,
  • Liu Meng-kun ,
  • Ma Xiao-fei
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Online published: 2012-01-25

Abstract

Research developed a polyamide absorption-HPLC method to determine 20 kinds of water-soluble pigments in beverages and candy.Samples were extracted with water,then absorbed-desorbed by polyamide,finally analyzed by Eclipse XDB C18 column(250 mm ×4.6 mm,5 μm).The mobile phase was: 0.02 mol/L ammonium acetate – methanol-acetonitrile;wavelength was 450nm,520 nm and 620nm,respectively.A good linear relationship was obtained from 2.00 μg/mL to 50.0 μg/mL.The R.S.D.of samples reproducibility(n=6) was 0.51%~7.8%;the recovery of the method was in the range of 71.4%~109.2%;the limit of detection was 0.03~0.3 mg/kg.The method was accurate and reproducible,it was suitable for analysis of several water-soluble pigments in beverages and candy simultaneously.

Cite this article

Gu Yu-xiang , Ge Yu , Yin Jie , Yu Cheng-hua , Lu Zhi-yun , Liu Meng-kun , Ma Xiao-fei . Determination of 20 Water-soluble Pigments in Beverages and Candy by Polyamide[J]. Food and Fermentation Industries, 2012 , 38(01) : 161 -164 . DOI: 10.13995/j.cnki.11-1802/ts.2012.01.045

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