Integrated microbiome and metabolome analyses reveal spatial heterogeneity of medium-temperature Daqu and its potential impact on simulated strong-flavor baijiu fermentation
Medium-temperature Daqu (MTD) exhibits pronounced spatial heterogeneity between its surface (QS) and inner (QI) portions, yet their functional differences remain poorly understood. This study compared physicochemical properties, metabolites, and species-level microbial communities of QS and QI and evaluated their impac...