FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (2): 244-246.

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Study on Sudan in Chilli Products by Thin Layer Chromatography

 DING  Chang-He, QIAN  Lin, REN  Hui-Hua, LI  Li   

  1. College of Grain and Food , Henan University of Technology, Zhengzhou 450052, China
  • Online:2007-02-15 Published:2011-12-31

Abstract: A new method to detect Sudan I~IV in hot chilli products was studied in this paper. SudanⅠ could be extracted by ether from chilli powder, and detected by TLC to be spreaded on the solvent of ether/acetic ether/formic acid=80/20/1(V/V/ V) for qualitative assay. Sudan I~IV could be effectively adsorbed by activated clay from tabasco, then desorbed by ethyl alcohol, and finally detected by TLC with the silica gel plate.

Key words: Sudan I~IV, hot chilli products, TLC(thin layer chromatography), detection