Determination of Nitrite Content in Cereal Complementary Foods for Infants and Young Children
Due to the presence of starchy substances in cereal supplements for infants and young children,the sample solution becomes turbid during the pre-treatment stage,which affects the accurate determination of nitrite.This article establishes an accurate method for determining the nitrite content in infant cereal supplements by optimizing the enzymatic hydrolysis process and verifying the methodology.The results showed that selecting alpha amylase for enzymatic hydrolysis at 70℃for 14 min can effectively solve the problem of turbidity in the sample filtrate.The nitrite had a good linear relationship between 0～12.5 μg,the regression equation y=0.014 2x-0.000 1,the correlation coefficient r=0.999 8,and the recovery rate was 91.0%～98.2% .This indicates that the method is simple to operate,accurate in results,and can be used for the determination of nitrite content in infant cereal supplements.
cereal supplementary food for infants and young childrennitriteamylase
万方数据
维普
