GB 5009.5-2016: National food safety standard - Determination of protein in foods

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Scope

This standard specifies the determination of protein in foods.
The method I and the method II of this standard are applicable to the
determination of protein in various foods. The method III is applicable to the
determination of grain, milk powder, rice flour, protein powder and other solid
sample containing protein of more than 10 g/100 g.
This standard does not apply to the determination of foods containing inorganic
nitrogenous substances, organic non-protein nitrogenous substances.
Method I. Kjeldahl method

Basic Data

Standard ID	GB 5009.5-2016 (GB5009.5-2016)
Description (Translated English)	National food safety standard - Determination of protein in foods
Sector / Industry	National Standard
Classification of Chinese Standard	C53
Classification of International Standard	67.040
Word Count Estimation	9,996
Date of Issue	2016-12-23
Date of Implementation	2017-06-23
Older Standard (superseded by this standard)	GB 5009.5-2010; GB/T 14489.2-2008; GB/T 15673-2009; GB/T 5511-2008; GB/T 9695.11-2008; GB/T 9823-2008
Regulation (derived from)	National Health and Family Planning Commission Notice No.17 of 2016
Issuing agency(ies)	National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration
Summary	This standard specifies the determination of protein in food. The first method and the second law of this standard are applicable to the determination of protein in various foods. The third method is applicable to the determination of solid samples such as grain, soybean milk powder, rice flour and protein powder with protein content above 10g / 100g. This standard does not apply to the determination of foods containing inorganic nitrogenous substances and organic non-protein nitrogenous substances.