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Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
Published on: May 20, 2013
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Insight from untargeted metabolomics: Revealing the potential marker compounds changes in refrigerated pork based on
Minghui Gu1, Cheng Li1, Li Chen1
1Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
Food Chemistry
|May 22, 2023
Summary
This study used metabolomics and machine learning to find key compounds affecting pork spoilage. D-xylose, xanthine, and pyruvaldehyde are identified as crucial markers for refrigerated pork freshness.
Area of Science:
- Food Science
- Analytical Chemistry
- Biochemistry
Background:
- Limited understanding of non-volatile compound and metabolic pathway changes during pork storage.
- Need for advanced analytical techniques to identify spoilage markers.
Purpose of the Study:
- To identify potential marker compounds influencing non-volatile production during pork storage.
- To elucidate the effects of these markers on pork quality and freshness.
- To explore the role of metabolic pathways in pork degradation.
Main Methods:
- Untargeted metabolomics using ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS/MS).
- Application of random forests machine learning algorithm for marker compound screening.
- Bioinformatics analysis to identify key metabolic pathways.
Main Results:
- Identified 873 differential metabolites using analysis of variance (ANOVA).
- Key metabolic pathways involved in protein degradation and amino acid transport were amino acid and nucleotide metabolism.
- Screened 40 potential marker compounds, highlighting the role of pentose-related metabolism in pork spoilage.
- D-xylose, xanthine, and pyruvaldehyde identified as key markers for refrigerated pork freshness.
Conclusions:
- The study provides novel insights into the metabolic changes during pork storage.
- Identified specific compounds (d-xylose, xanthine, pyruvaldehyde) as indicators of pork freshness.
- Suggests pentose-related metabolism plays a critical role in pork spoilage, offering new strategies for quality assessment.
