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Study Findings from M. Idrees et al Provide New Insights into Chemical Engineering (Production Of Fermentable Sugars By Combined Chemo-enzymatic...

August 26, 2014



Study Findings from M. Idrees et al Provide New Insights into Chemical Engineering (Production Of Fermentable Sugars By Combined Chemo-enzymatic Hydrolysis Of Cellulosic Material For Bioethanol Production)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Chemical Engineering have been published. According to news reporting originating from Islamabad, Pakistan, by NewsRx correspondents, research stated, "To change the recalcitrant nature of the lignocellulosic material for maximum hydrolysis yield, a comprehensive study was done by using sulphuric acid as an exclusive catalyst for the pretreatment process. The enzymatic digestibility of the biomass [Water Hyacinth: Eichhornia crassipes] after pretreatment was determined by measuring the hydrolysis yield of the pretreated material obtained from twenty four different pretreatment conditions."

Our news editors obtained a quote from the research, "These included different concentrations of sulphuric acid (0.0, 1.0, 2.0 and 3.0%), at two different temperatures (108 and 121 degrees C) for different residence times (1.0, 2.0 and 3.0h). The highest reducing sugar yield (36.65 g/L) from enzymatic hydrolysis was obtained when plant material was pretreated at 121 degrees C for 1.0 h residence time using 3.0% (v/v) sulphuric acid and at 1:10 (w/v) solid to liquid ratio. The total reducing sugars obtained from the two-stage process (pretreatment + enzymatic hydrolysis) was 69.6g/L. The resulting sugars were fermented into ethanol by using Saccharomyces cerevisiae."

According to the news editors, the research concluded: "The ethanol yield from the enzymatic hydrolyzate was 95.2% of the theoretical yield (0.51g/g glucose), as determined by GS-MS, and nearly 100% since no reducing sugars were detected in the fermenting media by TLC and DNS analysis."

For more information on this research see: Production Of Fermentable Sugars By Combined Chemo-enzymatic Hydrolysis Of Cellulosic Material For Bioethanol Production. Brazilian Journal of Chemical Engineering, 2014;31(2):355-363. Brazilian Journal of Chemical Engineering can be contacted at: Brazilian Soc Chemical Eng, Rua Libero Badaro 152-11 Andar, Cep 01008-90 Sao Paulo, Brazil (see also Chemical Engineering).

The news editors report that additional information may be obtained by contacting M. Idrees, COMSATS, Inst Informat Technol, Off Res Innovat & Commercializat, Islamabad 45600, Pakistan. Additional authors for this research include A. Adnan, S.A. Bokhari and F.A. Qureshi.

Keywords for this news article include: Asia, Pakistan, Islamabad, Chemical Engineering

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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