Fig. 3From: Novel properties of photofermentative biohydrogen production by purple bacteria Rhodobacter sphaeroides: effects of protonophores and inhibitors of responsible enzymesThe effects of DNP and CCCP (a), DPI and DMSO (b) various concentrations on medium pH during Rh. sphaeroides MDC6522 anaerobic growth in batch culture upon illumination. DNP and CCCP were added after 24 h bacterial growthBack to article page