Determination of DHA and Linoleic Acid Contents in Infant Formula Milk Powder by GC-MS

doi:10.7506/spkx1002-6630-201114056

Abstract

Abstract: A method to determine docosahexaenoic acid (DHA) and linoleic acid contents in infant formula milk powder by gas chromatography-mass spectrometry (GC-MS) was developed. Samples were methylesterized with acetyl chloride-MeOH, followed by extraction with toluene before GC-MS analysis. The external standard method was used for quantification. The average spike recoveries for DHA and linoleic acid in a commercial sample were 96%－110%. The developed method proved simple, precise, accurate and reliable, thereby being suitable for the determination of DHA and linoleic acid contents in infant formula milk powder.

Key words: docosahexaenoic acid (DHA), linoleic acid, infant formula milk powder, gas chromatography-mass spectrometry (GC-MS)

CLC Number:

TS207.3

PENG Fei-jin，YANG Wei-hua. Determination of DHA and Linoleic Acid Contents in Infant Formula Milk Powder by GC-MS[J]. FOOD SCIENCE, 2011, 32(14): 261-263.

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Determination of DHA and Linoleic Acid Contents in Infant Formula Milk Powder by GC-MS

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