Objective To compare the results of 2 commercial kits for determination of folic acid in infant formula milk powder. Methods The two standard kits were compared by making standard curves, the addition standard recovery tests and repeating the sample tests. Results The results showed that the folic acid standard curve correlation coefficients of the two kits were above 0.999. The recoveries of the samples were between 90% and 100%, which were in line with the standard recovery requirements of the kit. The relative standard deviations of the sample repeatability test results were less than 5%. Conclusion The 2 commercial folic acid kits have the characteristics of simple operation, short experimental period and good repeatability, and can quickly detect the content of folic acid in infant formula milk powder.
标题：2种微生物试剂盒法快速检测乳粉中叶酸含量
英文标题：Rapid determination of the content of folic acid in milk power by two rapid microbiological kit methods
