AACC International Approved Methods - AACC Method 46-11.02. Crude Protein -- Improved Kjeldahl Method, Copper Catalyst Modification
AACC International Approved Methods
Nitrogen
AACCI Method 46-11.02
Crude Protein -- Improved Kjeldahl Method, Copper Catalyst Modification
VIEW METHOD
Objective
This is a modified Kjeldahl method in which CuSO4 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.
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