Fig. 4From: Formate-induced CO tolerance and methanogenesis inhibition in fermentation of syngas and plant biomass for carboxylate productionEffect of 1.5Â kPa ethylene on the fermentation of corn silage with 0Â kPa CO (98Â kPa H2) and 5Â kPa CO (93Â kPa H2). Production or consumption rates of carboxylates a and gases b are shown in terms of electron equivalents. Error bars are standard errors. These tests were carried out with bottles inoculated with the adapted communityBack to article page