FOOD SCIENCE ›› 2003, Vol. 24 ›› Issue (11): 108-110.

Previous Articles     Next Articles

Determination of Microamouts of Ammorua in Meat by Salicylic Acid and Sodium Hypochlorite Spectrophotometry

 SANG  Hong-Qing, ZHONG  Yong-Hai, LIU  Xiao-Ji   

  1. 1.Anhui Technical Teacher’s College;2.Anhui Fuyang Chahua Middle School
  • Online:2003-11-15 Published:2011-12-13

Abstract: A new method for the determination of the crude ammonia in meat was presented in this paper.The method was basedon the color reaction of ammonia-salicylic acid-sodium hypochlorite with the presence of sodium nitroprusside in basic medium.It showed that the apparent molar absorptivity was 1.84×104L/mol•cm with the wavelength at 660nm.Beer’s law was obeyedfor the nitrogen of ammonia in the range of 0~5μg/10ml. The correlation coefficient is 0.9999. The recoveries were between96%~103.3%.The method has been applied satisfactorily to the determination of the crude ammonia in meat samples.

Key words: salicylic acid, sodium hypochlorite, crude ammonia, spectrophotometry, meat