This Standard specifies the method for determination of protein in foods. This Standard is applicable to the determination of protein in foods. Method I Kjeldahl Method
Basic Data
Standard ID
GB 5009.5-2025 (GB5009.5-2025)
Description (Translated English)
National food safety standard - Determination of protein in food
Sector / Industry
National Standard
Classification of Chinese Standard
X09
Word Count Estimation
15,120
Date of Issue
2025-03-16
Date of Implementation
2025-09-16
Issuing agency(ies)
National Health Commission of the People's Republic of China, State Administration for Market Regulation
