Anne Izard

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Serial enrichment was used to obtain a strain ofClostridium acetobutylicum demonstrating a 40% increase in tolerance to added butanol and a further 17% improvement in the ability to produce butanol. The glucose and the butyrate consumption were higher for the G1 variant than for the wild-type strain. In consideration of the higher butanol tolerance, a(More)
Clostridium acetobutylicum cultures were grown in batch mode, using mineral ultrafiltration membranes to confine the microbial cells in the fermentor while the permeate was subject to heat treatment (70° C for 20 min) before recycling. The extracellular lytic activity in the broth, measured by the initial rate of lysis of a buffered suspension of(More)
The inhibitory effect of various alkanols, benzyl alcohol and phenethyl alcohol on the growth rate of Clostridium acetobutylicum ATCC 824 was investigated. Inhibition of cell growth was studied by treating cultures with varied concentrations of alcohols. There was a threshold concentration above which growth inhibition occurred. The degree of inhibition was(More)
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