This standard specifies method for determination of protein content in foods.
The first method and the second method of this standard is applicable to protein determination of all kinds of foods, the third method is applicable to screening determination of solid samples such as grains, peas, milk powder, rice flour and protein powder, the protein content of which is above 10g/100g.
This standard is not applicable to the determination of foods containing inorganic nitrogenous substance and organic non-protein nitrogenous substance.
Foreword I
1 Scope
2 Normative References
3 Principles
4 Reagents and Materials
5 Instruments and Equipments
6 Analytical Procedure
7 Expression of Analytic Result
8 Precision
9 Principles
10 Reagents and Materials
11 Instruments and Equipments
12 Analytical Procedure
13 Calculation (expression) of Analytic Result
14 Precision
15 Principles
16 Instruments and Equipments
17 Analytical Procedures
18 Expression of Analysis Results
19 Precision
20 Others
