International Sugar Journal

Biobutanol: A better biofuel? [Full subscriber]

Global energy demand and concerns over greenhouse gas emissions have increased interest in producing fuels which are compatible with current transportation infrastructure, from renewable sources. In recent years the profile of bio-butanol has been raised due to its perceived advantages over the traditionally considered gasoline substitute, bio-ethanol. In this review, traditional acetone-butanol-ethanol production by solventogenic clostridia is discussed. Different strategies have been employed to increase butanol productivity and overcome problems with toxicity; however a poor understanding of the regulatory networks governing butanol fermentation and lack of efficient genetic tools for clostridia has hampered progress in improving butanol titres. The butanol…

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