Fig. 2
From: Electricity-assisted production of caproic acid from grass
Carboxylate profile and bacterial community of fermentation and elongation system: a carboxylate profile of fermentation system, b bacterial community for fermentation system, c carboxylate profile of elongation system, d bacterial community for elongation system. The concentric circles represent the bacterial taxonomy from phylum (centre) to genus (outermost). Each band indicates the proportion of the bacteria. One colour is dedicated to each classification