Department of Chemical and Biochemical Engineering, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada.
Department of Chemical and Biochemical Engineering, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada; Dipartimento di Ingegeria Chimica, dei Materiali e della Produzione Industriali, Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy.
Bioresour Technol. 2014 Dec;174:176-81. doi: 10.1016/j.biortech.2014.09.152. Epub 2014 Oct 8.
A potential dedicated energy crop (switchgrass) and an invasive (North America) plant species (phragmites) were compared as potential substrates for acetone butanol ethanol (ABE) fermentation. Both biomass were pretreated with 1% (w/v) NaOH and subjected to enzymatic hydrolysis. Total reducing sugar yields were 365 and 385gkg(-1) raw biomass for switchgrass and phragmites. Fermentation of the hydrolysates resulted in overall ABE yields of 146 and 150gkg(-1) (per kg dry plant material), with a theoretical maximum of 189 and 208gkg(-1), respectively. Though similar overall solvent yields were obtained from both crops, the largest carbon loss in the case of switchgrass occurred during pretreatment, while the largest loss in the case of phragmites occurred to enzymatic hydrolysis. These findings suggest that higher overall yields are achievable and that both crops are suitable feedstocks for butanol fermentation.
比较了一种潜在的专用能源作物（柳枝稷）和一种入侵的（北美）植物物种（芦苇），作为丙酮丁醇乙醇（ABE）发酵的潜在基质。两种生物质均用 1%（w/v）NaOH 预处理，并进行酶水解。柳枝稷和芦苇的总还原糖得率分别为 365 和 385gkg(-1) 原料生物质。水解物的发酵导致 ABE 的总产率分别为 146 和 150gkg(-1)（每千克干植物材料），理论最大值分别为 189 和 208gkg(-1)。尽管从这两种作物中获得了相似的整体溶剂产率，但在柳枝稷的情况下，最大的碳损失发生在预处理过程中，而在芦苇的情况下，最大的损失发生在酶水解过程中。这些发现表明，可以实现更高的整体产率，并且这两种作物都是丁醇发酵的合适原料。
