China National Food Standard GB 5009.5-2010 is a mandatory standard in which the determination of protein in foods is stipulated.
Contents:
1. Scopes
Method 1 Kjeldahl Determination
2. Normative references
3. Theories
4. Regents and materials
5. Apparatus and equipment
6. Analytical procedures
7. Description of the analytical results
8. Degree of precision
Method 2 Spectrophotometry
9. Theories
10. Regents and materials
11. Apparatus and equipment
12. Analytical procedures
13. Description of the analytical results
14. Degree of precision
Method 3 Combustion
15. Theories
16. Regents and materials
17. Apparatus and equipment
18. Analytical procedures
19. Description of the analytical results
20. Degree of precision