Interrelated spatiotemporal variations between bacterial community and physicochemical factors in pit mud of Chinese strong-flavor Baijiu

• DOI: 10.1016/j.lwt.2023.115630
• Publication Date: 2023-12-08T13:32:18Z
• Authors: Haiwei Ren; Zaoning Cai; Caixia Du; Zhijuan Li; Xiaopeng Guo; Yonggang Wang; Donglin Ma; Bingyun Zhang; Yi Zheng
• Keywords: Acidobacteria

The spatiotemporal variations of bacterial communities and physicochemical factors in pit mud Chinese strong-flavor Baijiu from Jinhui Liquor (Longnan, Gansu) were investigated. temporal heterogeneity properties was more significant than the spatial. majority indexes new (5, 7, 10-year) PM significantly differed that old (30 50-year) PM. Combined with microbiome characteristics, main affecting community composition included pH, humus, moisture, available P, NH4+-N, capric, lactic, acetic acid. PMs clearly distinguished based on microbiome, species evenness higher. p_Proteobacteria, p_ Acidobacteria, Lactobacillus, Pseudomonas, Hydrogenophaga abundant a range 1.72%–42.73%, while p_Firmicutes, p_Bacteroidetes, Petrimonas, Clostridium, Caloramator dominant (4.09%–52.54%). metabolic activity other amino acids, lipid, xenobiotics higher PM, acid, carbohydrate, cofactors, vitamins According to model fitting assembly, construction depended stochastic process (|βNTI|≤2). This work provides reference for cultivation high-quality liquor brewing.