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Journal of Dairy Science Vol. 18 No. 11 733-739
© 1935 by American Dairy Science Association ®
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Combination of Catalysts to Reduce Digestion Time in the Determination of Nitrogen

II. Dairy Products

Charles F. Poe and R. R. Schafer

Chemistry Department, University of Colorado, Boulder, Colorado

ABSTRACT

Conclusions:

  1. Hydrogen peroxide when used with copper, mercury, and selenium (separately or in combination) reduces somewhat the digestion time and does not impair the accuracy of the determination.
  2. The combination of the three catalysts (Cu, Hg, and Se) showed a reduction in digestion time from 105 to 13 minutes (averages) when compared to that of the Gunning method. When hydrogen peroxide was used with these three catalysts, the reduction in time was from 105 to 10.7 minutes (averages).






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Copyright © 1935 by the American Dairy Science Association ®.