Unveiling the correlations between benzoic acid content, key microbial genera, and metabolites during the storage and transportation of raw yak milk based on multi-omics analysis.

ABSTRACT: Unique transport conditions in Tibetan regions delay the storage of yak milk, particularly during the July-August peak production period at 18 °C, promoting microbial activity and benzoic acid accumulation. This substantially heightens food safety risks associated with consumption. This study used 16S high-throughput sequencing and non-targeted metabolomics to examine the association between benzoic acid content, dominant bacterial genera, and key metabolites. At 0 h of storage (G0), the dominant genera in yak milk were Kaistella, Lactococcus, and Streptococcus. As storage extended to 12 h (G12) and 24 h (G24), Lactococcus emerged as the dominant genus and the key lactic acid bacterium producing endogenous benzoic acid. Metabolomics identified 729 differentially

SUBMITTER: Guo Y 

PROVIDER: S-EPMC12853044 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature