Foreword

This standard replaces GB/T 5009.89-2003 “Determination of niacin in foods”, GB 5413.15-2010 “National food safety standard Determination of vitamin niacin and niacinamide in foods for infants and young children, milk and milk products” and GB/T 9695.25-2008 “Meat and meat products-Determination of vitamin PP content”.

Compared with GB 5413.15-2010, the major changes of this standard are as follows:

——the Chinese name of standard has been revised to “National food safety standard Determination of niacin and niacinamide in foods”.

——the reagent order and format have been adjusted;

——the pretreatment method for different food categories has been revised and detailed (Method I);

——the method for concentration correction of standard solution has been added (Method II);

——the limit of detection has been re-evaluated and the limit of quantitation has been added.