Fig. 4From: 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 E h during Rh. sphaeroides MDC6522 anaerobic growth in batch culture upon illumination. DNP and CCCP were added after 24 h bacterial growthBack to article page