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AACC International Approved Methods - AACC Method 46-16.01. Crude Protein -- Improved Kjeldahl Method, Copper-Titanium Dioxide Catalyst Modification

AACC International Approved Methods

Nitrogen

AACCI Method 46-16.01
Crude Protein -- Improved Kjeldahl Method, Copper-Titanium Dioxide Catalyst Modification

VIEW METHOD

Objective
This is a modified Kjeldahl method in which CuSO4/TiO2 is used as catalyst. The method determines total nitrogen in nitrate-free material, wheat flour and grain, cereal adjuncts, yeast foods, and animal feeds. The sample is digested in H2SO4, and N is converted to NH3, which is distilled and titrated.