Retention time (min)[
Abundance
Fig. 1. (A) Total ion chromatogram of the volatile compounds extracted from structured-lipid based infant formula after 4-week storage at 37 °C by dynamic headspace GC–
MS. Peak numbers correspond to the compounds listed in Table 1; (B) chromatogram of a matrix-matched standard solution spiked with hexanal at 0.01 lg/ml analyzed by
SPME-GC.