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Findings from Indian Institute of Technology Update Understanding of Energy Research (Screening and optimization of pretreatments for Parthenium...

September 3, 2014



Findings from Indian Institute of Technology Update Understanding of Energy Research (Screening and optimization of pretreatments for Parthenium hysterophorus as feedstock for alcoholic biofuels)

By a News Reporter-Staff News Editor at Biotech Week -- Investigators discuss new findings in Energy Research. According to news reporting originating in Gauhati, India, by NewsRx journalists, research stated, "Parthenium hysterophorus world's seven most devastating and hazardous weeds, and is abundantly available in several parts of the world. This study treats the subject of effective utilization of this waste biomass (which has cellulose content of 45.2 +/- 1.81% w/w) for biofuels production."

The news reporters obtained a quote from the research from the Indian Institute of Technology, "We have presented a comprehensive and comparative assessment of numerous pretreatment strategies for P. hysterophorus, comprising of all major physical, chemical and physicochemical methods. The yardstick of assessment has been amount of fermentable sugars released during the pretreatment and the post-treatment enzymatic hydrolysis of pretreated biomass. Carboxymethylcellulase (1.0 U/mg, 1.7 mg/mL) produced by an isolate Bacillus amyloliquefaciens SS35 and beta-glucosidase (Novozyme 188), have been used for enzymatic hydrolysis of pretreated biomass. Among the different methods employed for pretreatment, the most efficient treatment has been revealed to be autoclaving of biomass at 121 degrees C and 15 psi pressure for 30 min in acidic (1% v/v, H2SO4) environment. Total reducing sugar (TRS) yield during this pretreatment, mainly due to hydrolysis of hemicellulosic fraction of biomass, has been 285.3 mg/g of raw biomass. Further enzymatic hydrolysis resulted in reducing sugar yield of 187.4 mg/g of pretreated biomass (9.37 g/L). The total fermentable sugar (TFS) yield from the optimized pretreatment was 397.7 mg/g raw biomass (39.77 g/100 g raw biomass). The effects of different pretreatment methods on biomass structure and complexity were investigated by field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) techniques. Comparative assessment of the results with pretreatment and hydrolysis of other conventional agro- and forest residues shows that P. hysterophorus has same potential for being the feedstock for biofuels."

According to the news reporters, the research concluded: "These results conclusively demonstrate the utility of P. hysterophorus for sustainable biofuels production."

For more information on this research see: Screening and optimization of pretreatments for Parthenium hysterophorus as feedstock for alcoholic biofuels. Applied Energy, 2014;129():195-206. Applied Energy can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Applied Energy - www.elsevier.com/wps/product/cws_home/405891)

Our news correspondents report that additional information may be obtained by contacting S. Singh, Indian Inst Technol Guwahati, Dept. of Biotechnol, Gauhati 781039, Assam, India. Additional authors for this research include S. Khanna, V.S. Moholkar and A. Goyal (see also Energy Research).

Keywords for this news article include: Asia, Biotechnology, India, Gauhati, Biofuel, Oil and Gas, Bioengineering, Energy Research

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


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Source: Biotech Week


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