FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (7): 398-401.

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Study on Determination of Content of Phenol in Kiwifruit by Folin Method

 WANG  An-Na, XU  Shan-Bao, LIU  Xiao-Yan, WU  Li-Gen   

  1. College of Grain and Food, Henan University of Technology, Zhengzhou 450052, China
  • Online:2008-07-15 Published:2011-07-28

Abstract: sing gallic acid as the standard, the optimized conditions for determining content of kiwifruit phenol by Folin method are as follows: volume ratio between Folin reagent and 10% Na2CO3 1:2 (V/V), volume of Folin 4 ml, reaction temperature 25 ℃,and reaction time 120 min. There is a good linearity between content of phenol and absorbance in the range of 1~6μg/ml. The average recovery rate of spiked phenol is 98.8%, and the RSD is 0.81%.

Key words: kiwifruit, phenol, Folin method