Insights into the Aroma Profile of Sauce-Flavor Baijiu by GC-IMS Combined with Multivariate Statistical Analysis

Figure 6

Identification of differential volatile compounds among different types of SFB samples via LEfSe. Cladogram of the volatile compounds (a). Significant differential volatile compounds of type 1 SFB samples, type 2 SFB samples and type 3 SFB samples are represented by red, green and blue, respectively. while other compounds are represented by yellow. Branch areas are shaded according to the highest-ranked variety for that taxon. The LDA score indicates the level of differentiation among different types of SFB. A threshold value of 2.0 was used as the cut-off level. Horizontal bar chart showing differential volatile compounds (b). Significant differential volatile compounds of type 1 SFB samples, type 2 SFB samples and type 3 SFB samples are represented by red, green and blue, respectively.

(a)

(b)