Effects of the Oxygen Content and Light Intensity on Milk Photooxidation Using Untargeted Metabolomic Analysis

Dongfei Tan, Aijin Ma, Shaolei Wang, Qingyang Zhang, Man Jia, Afaf Kamal-Eldin, Huaxing Wu, Gang Chen

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)

    Abstract

    Photooxidation is the main cause of milk quality deterioration during processing and transportation. Oxygen and light are responsible for dairy milk photooxidation. The objective of this study was to determine the characteristic metabolites after photooxidation and how they are affected by oxygen exposure and light intensity. Ultra-performance liquid chromatography coupled with triple time-of-flight mass spectrometry and multivariate data analysis were used for the high-throughput evaluation of milk photooxidation. Four products were identified as biomarkers: uric acid, riboflavin, lumichrome, and indole-3-carboxaldehyde. Afterward, the effects of oxygen content and light intensity on the biomarkers were investigated, and a sensory evaluation was performed. Both oxygen exposure and light intensity affected the contents of photooxidation biomarkers in milk samples. The sensory score correlated well with the oxygen content but not with the light intensity. The untargeted metabolomic method was an effective tool to identify biomarkers for milk photooxidation evaluation.

    Original languageEnglish
    Pages (from-to)7488-7497
    Number of pages10
    JournalJournal of Agricultural and Food Chemistry
    Volume69
    Issue number26
    DOIs
    Publication statusPublished - Jul 7 2021

    Keywords

    • UPLC-Triple TOF-MS
    • light
    • milk
    • oxygen
    • photooxidation

    ASJC Scopus subject areas

    • General Chemistry
    • General Agricultural and Biological Sciences

    Fingerprint

    Dive into the research topics of 'Effects of the Oxygen Content and Light Intensity on Milk Photooxidation Using Untargeted Metabolomic Analysis'. Together they form a unique fingerprint.

    Cite this