期刊
FOODS
卷 12, 期 14, 页码 -出版社
MDPI
DOI: 10.3390/foods12142782
关键词
VOCs; Staphylococcus aureus; HS-GC-IMS; HS-SPME-GC-MS; chicken
Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry and headspace gas chromatography-ion mobility spectrometry were used to analyze the volatile organic compounds from chilled chicken contaminated with Staphylococcus aureus during early storage. Differential metabolites and their possible biotransformation pathways were analyzed using the KEGG database. Orthogonal partial least squares discriminant analysis was applied to identify biomarkers associated with the early stage of chicken meat contamination with S. aureus.
To address the potential risks to food safety, headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS) and headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS) were used to analyze the volatile organic compounds (VOCs) generated from chilled chicken contaminated with Staphylococcus aureus during early storage. Together with the KEGG database, we analyzed differential metabolites and their possible biotransformation pathways. Orthogonal partial least squares discriminant analysis (OPLS-DA) was applied to characterize VOCs and identify biomarkers associated with the early stage of chicken meat contamination with S. aureus. The results showed 2,6,10,15-tetramethylheptadecane, ethyl acetate, hexanal, 2-methylbutanal, butan-2-one, 3-hydroxy-2-butanone, 3-methylbutanal, and cyclohexanone as characteristic biomarkers, and 1-octen-3-ol, tetradecane, 2-hexanol, 3-methyl-1-butanol, and ethyl 2-methylpropanoate as potential characteristic biomarkers. This provides a theoretical basis for the study of biomarkers of Staphylococcus aureus in poultry meat.
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