title: Effect of steam explosion on waste copier paper alone and in a mixed lignocellulosic substrate on saccharification and fermentation.
abstract: This study evaluated steam (SE) explosion on the saccharification and simultaneous saccharification and fermentation (SSF) of waste copier paper. SE resulted in a colouration, a reduction in fibre thickness and increased water absorption. Changes in chemical composition were evident at severities greater than 4.24 resulting in a loss of xylose and the production of breakdown products known to inhibit fermentation (particularly formic acid and acetic acid). SE did not improve final yields of glucose or ethanol, and at severities 4.53 and 4.83 reduced yields probably due to the effect of breakdown products and fermentation inhibitors. However, at moderate severities of 3.6 and 3.9 there was an increase in initial rates of hydrolysis which may provide a basis for reducing processing times. Co-steam explosion of waste copier paper and wheat straw attenuated the production of breakdown products, and may also provide a basis for improving SSF of lignocellulose.
authors.affiliation: The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
authors.forename: Adam
authors.initials: A
authors.lastname: Elliston
authors.affiliation: The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
authors.forename: David R
authors.initials: DR
authors.lastname: Wilson
authors.affiliation: The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Wellner
authors.affiliation: The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
authors.forename: Samuel R A
authors.initials: SRA
authors.lastname: Collins
authors.affiliation: The National Collection of Yeast Cultures, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom.
authors.forename: Ian N
authors.initials: IN
authors.lastname: Roberts
authors.affiliation: The Biorefinery Centre, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom. Electronic address: keith.waldron@ifr.ac.uk.
authors.forename: Keith W
authors.initials: KW
authors.lastname: Waldron
mesh_terms: D003247:Conservation of Natural Resources / Q000379:methods; D005285:Fermentation; D007220:Industrial Waste / Q000517:prevention & control; D008031:Lignin / Q000737:chemistry* / Q000378:metabolism*; D010209:Paper; D035261:Plant Components, Aerial / Q000382:microbiology; D012037:Refuse Disposal / Q000379:methods; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D013227:Steam; D014908:Triticum / Q000382:microbiology*; D014994:Xylose / Q000138:chemical synthesis / Q000378:metabolism
chemical_list: D007220:Industrial Waste; D013227:Steam; C036909:lignocellulose; D008031:Lignin; D014994:Xylose
keywords: Cellulosic biomass; Enzyme saccharification; Fermentation; SSF; Steam explosion
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