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• W2095388939 abstract "Two headspace techniques based on mass spectrometry detection (MS), electronic nose, and solid phase microextraction coupled to gas chromatography−mass spectrometry (SPME-GC/MS) were evaluated for their ability to differentiate various infant formula powders based on changes of their volatiles upon storage. The electronic nose gave unresolved MS fingerprints of the samples gas phases that were further submitted to principal component analysis (PCA). Such direct MS recording combined to multivariate treatment enabled a rapid differentiation of the infant formulas over a 4 week storage test. Although MS-based electronic nose advantages are its easy-to-use aspect and its meaningful data interpretation obtained with a high throughput (100 samples per 24 h), its greatest disadvantage is that the present compounds could not be identified and quantified. For these reasons, a SPME-GC/MS measurement was also investigated. This technique allowed the identification of saturated aldehydes as the main volatiles present in the headspace of infant milk powders. An isotope dilution assay was further developed to quantitate hexanal as a potential indicator of infant milk powder oxidation. Thus, hexanal content was found to vary from roughly 500 and 3500 μg/kg for relatively non-oxidized and oxidized infant formulas, respectively. Keywords: Infant formulas; volatiles; electronic nose; hexanal; solid phase microextraction; mass spectrometry; isotope dilution assay" @default.
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• W2095388939 date "2003-03-29" @default.
• W2095388939 modified "2023-10-12" @default.
• W2095388939 title "Comparison of Mass Spectrometry-Based Electronic Nose and Solid Phase MicroExtraction Gas ChromatographyMass Spectrometry Technique to Assess Infant Formula Oxidation" @default.
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• W2095388939 doi "https://doi.org/10.1021/jf026131w" @default.
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