FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (11): 408-411.

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Study on Determination of Acid Value of Oils by Colorimetric Method

   Yan-Mei-Rong,   Li-Li-Si   

  1. Jiangsu Province Key Laboratory of Grain and Oil Quality Control and Deep Processing,Nanjing University of Finance and Economics,Nanjing 210003,China
  • Online:2006-11-15 Published:2011-11-28

Abstract: The determination of acid value of oils by colorimetric method was studied. To avoid the use of expensive surfactant bis(2-ethylhexyl) sulfosuccinate,vortex and centrifugation were used. By comparison between the nation standard method and the colorimetric methods for the determination of acid value of safflower oil,sunflower oil and corn oil,it is clear that the two methods had similar precision and the relative error between them was 30.0%,15.3% and 9.1% respectively.

Key words: colorimetric method, oil, acid value, centrifugation