Figure 5From: Biohydrogen production from arabinose and glucose using extreme thermophilic anaerobic mixed culturesTime course of hydrogen production and substrate consumption, O P i H 2 ; ■ arabinose; x glucose. a, b) pH 5.5 without headspace flushing. c, d) pH 5.5 with headspace flushing. e, f) pH 7 with headspace flushing.Back to article page