Mass spectrometric analysis of free fatty acids in infant milk powders by frozen pretreatment coupled with isotope‐labeling derivatization. Issue 5 (25th January 2016)

• Record Type: Journal Article
• Authors: Zhou, Tianxiao; Leng, Jiapeng; Peng, Yaoshan; Zhang, Lei; Guo, Yinlong
• Is Part Of: Journal of separation science. Volume 39:Issue 5(2016)
• Page Start: 873
• Page End: 879
• Publication Date: 2016-01-25
• Subjects: Free fatty acids -- Frozen pretreatment method -- Infant milk powder -- Mass spectrometry; Separation (Technology) -- Periodicals; Chromatographic analysis -- Periodicals; 543.089
• DOI: 10.1002/jssc.201501032
• Languages: English
• ISSNs: 1615-9306

Abstract

Abstract : In combination with frozen pretreatment and carboxyl group derivatization, a novel workflow was developed for the determination of free fatty acids in milk powder. The workflow showed a significantly enhanced performance for comprehensive free fatty acid analysis owing to a highly efficient frozen extraction method. In addition, the advantages of the workflow also involved high sensitivity and great tolerance to a complex matrix. Characteristic fragment ions of derivatization reagents also provide clear evidence for the qualitative analysis of free fatty acids. Fourteen types of free fatty acids in a number of domestic and overseas infant milk powders have been successfully detected. The content of free fatty acids in the different samples was different, which probably indicates the diverse quality of infant milk powder. The workflow is expected to be a pragmatic tool for the analysis of free fatty acids in intricate matrices.