Potential for ethanol production from different sorghum cultivars
메타 데이터
바이오화학분류
바이오플라스틱
플라스틱
바이오정밀화학
용매
화학제품
연료
화장품용 기능성소재
계면활성제⁄증점제
의료용 화학소재
식품첨가제
논문
Potential for ethanol production from different sorghum cultivars
학술지
Industrial crops and products
저자명
Castro, Eulogio; Nieves, Ismael U.; Rondó n, Vanessa; Sagues, William J.; Ferná ndez-Sandoval, Marco T.; Yomano, Lorraine P.; York, Sean W.; Erickson, John; Vermerris, Wilfred
초록
<P><B>Abstract</B></P> <P>This work presents the ethanol production results using three sweet sorghum cultivars. The sugar rich juice was fermented by <I>Saccharomyces cerevisiae</I> and <I>Escherichia coli</I>. The residual bagasse was further pretreated by dilute phosphoric acid steam explosion. The resulting slurry was submitted to Liquefaction plus Simultaneous Saccharification and co-Fermentation (L+SScF) process using Novozymes Cellic CTec3 enzymes and an engineered ethanologenic <I>E. coli</I> strain. Results show a sugar concentration in the juice ranging from 140 to 170g/L, which were almost completely converted into ethanol by yeast. Concerning the L+SScF, the final ethanol concentration produced increased with enzyme dosage, with little difference among all three sorghum cultivars, reaching up to 27.5g EtOH/L at enzyme concentrations of 11.5FPU/gDW. Considering the ethanol produced from juice and from Sweet Sorghum Bagasse (SSB), there is a potential of producing up to 10,600L of ethanol per hectare, improving on the values reported for corn ethanol.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Three sweet sorghum varieties are tested for ethanol production from juice and bagasse. </LI> <LI> Sugars from juice were fermented successfully by common or engineered microorganisms. </LI> <LI> Bagasse was submitted to phosphoric acid pretreatment and enzyme hydrolysis. </LI> <LI> Simultaneous saccharification and cofermentation with <I>E. coli</I> produced bioethanol. </LI> <LI> Up to 10500L ethanol/Ha were obtained considering all sugars in the sweet sorghum. </LI> </UL> </P>