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The influence of microbial bacterial proteins on metabolites in the chilled tan sheep meat

Abstract

This study aims to investigate experimentally the influence of microbial bacterial proteins on microbial metabolites in the chilled storage of Tan Sheep meat based on the surface enhanced laser desorption/ionization-time of flight-mass spectrometry (SELDI-TOF-MS) and gas chromatography-time of flight-mass spectrometry (GC-TOF MS). The correlation analysis of differentially abundant proteins and differential metabolites detected simultaneously in different storage periods has been carried out by heatmap analysis. The results show that 30 differential expressed metabolites were statistically significant. These metabolites were identified as potential spoilage biomarkers. Among of them, 25 differential expressed metabolites can be matched to KEGG metabolic pathways. cyano-amino-acid pathway, pentose phosphate pathway, histidine pathway, purine metabolic pathways, lanine, aspartic acid and glutamate pathway were highly active. Therefore, the differentially abundant proteins contents of microbiology in metabolism can lead to differential effects on metabolic pathways.

Keywords:
tan sheep meat; chilled storage; differentially abundant proteins; differential expressed metabolites; metabolic pathway

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