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Journals and Conferences
A stable community of bacteria that had unusually high tolerance of soluble silver was isolated from soil by chemostat enrichment. The community consisted of three bacteria: Pseudomonas maltophilia, Staphylococcus aureus and a coryneform organism. The pseudomonas was primarly responsible for the silver resistance. The tolerance of high silver… (More)
The fates of hydrophobic zein proteins, which encapsulate corn starch to create vitreous endosperm, have not been investigated in high-moisture corn (HMC). To assess influences of ensiling time and inoculation on zein proteins in HMC, quadruplicate samples of 2 random corn hybrids (A and B), containing 25.7 and 29.3% moisture, were ground, inoculated with… (More)
A simple defined medium for the production of ethanol by Zymononas mobilis in continuous culture is presented. Under comparable cultural conditions very similar fermentation kinetics were obtained using simple, complex and semi-synthetic rich media.
High fermenter (volumetric) ethanol productivities (⩾80 g/lh−1) were attained in a simple single-stage continuous-stirred-tank-reactor (CSTR) employing a flocculent mutant of Zymomonas mobilis with a feed containing 100g/l glucose. Under these conditions a final ethanol concentration of 47.6 g/l was obtained, representing a maximum conversion efficiency of… (More)
The minimum inhibitory concentration for some compounds frequently present in commercial wood acid hydrolysates are presented for Zymomonas mobilis ATCC 29191. All of the compounds tested caused morphological disturbances at sub-inhibitory concentrations. Extensive filamentous growth was observed in the presence of a complex wood hydrolysate fraction,… (More)
A two-stage continuous-stirred-tank-reactor (CSTR) system is used to achieve high final alcohol concentrations (>100 g/l) with Zymononas mobilis ATCC 29191. By employing continuous cell recycle on the second stage CSTR of a two-stage process a high overall volumetric productivity (18.13 g/l/h) is achieved together with >100 g/l effluent alcohol.