This standard specifies the determination method of L-carnitine in foods. Method I, the spectrophotometric method, is applicable to the determination of L- carnitine in infant foods (excluding partially hydrolyzed milk protein formula, deeply hydrolyzed milk protein formula and amino acid formula in infant formula foods for special medical purposes) and dairy products. Method II, the pre-column derivatization-high performance liquid chromatography, is suitable for the determination of L-carnitine in foods (excluding infant formula foods for special medical purposes and formula foods for special medical purposes). Method III, the liquid chromatography-tandem mass spectrometry, is suitable for the determination of L-carnitine in infant formula foods and formula foods for special medical purposes. Method I. Spectrophotometric method
Basic Data
Standard ID
GB 5009.300-2025 (GB5009.300-2025)
Description (Translated English)
National food safety standard - Determination of L-carnitine in the foods
Sector / Industry
National Standard
Classification of Chinese Standard
X09
Word Count Estimation
15,146
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
