Figure 2.

Metataxonomic analysis of sauerkraut fermentation brine. (A) Bacterial α-diversity using observed OTUs, Chao1, and Shannon index from day 1 to day 35 of sauerkraut fermentation from both producers (SK1 and SK2). The line inside the box represents the median, and the whiskers from either side of the box represent the first and the third quartiles, respectively. °=outliers. Different superscript letters indicate statistical significance within the same producer. (B) Principal component analysis (PCoA) representing the bacterial β-diversity according to Bray–Curtis dissimilarity index. Different colors and shapes indicate different time points and producers, respectively, as described in the legend. (C) Mean percentage relative abundance of the most abundant genera (>2%) at days 1, 2, 3, 7, 14, 21, and 35 of fermentation (n = 5 tanks).