期刊
TRENDS IN BIOTECHNOLOGY
卷 32, 期 1, 页码 46-53出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibtech.2013.10.003
关键词
lignocellulosic ethanol; high gravity; high dry matter content; high solids content
In brewing and ethanol-based biofuel industries, high-gravity fermentation produces 10-15% (v/v) ethanol, resulting in improved overall productivity, reduced capital cost, and reduced energy input compared to processing at normal gravity. High-gravity technology ensures a successful implementation of cellulose to ethanol conversion as a cost-competitive process. Implementation of such technologies is possible if all process steps can be performed at high biomass concentrations. This review focuses on challenges and technological efforts in processing at high-gravity conditions and how these conditions influence the physiology and metabolism of fermenting microorganisms, the action of enzymes, and other process-related factors. Lignocellulosic materials add challenges compared to implemented processes due to high inhibitors content and the physical properties of these materials at high gravity.
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