02101nas a2200253   4500008004100000022001400041245015000055210006900205260009900274300001400373490000800387520111000395653001901505653003601524653004101560653001201601653001101613100001801624700002301642700002101665700002001686700001401706856012701720       2011                        eng d  a0960-852400aMicrobial production of xylitol from D-xylose and sugarcane bagasse hemicellulose using newly isolated thermotolerant yeast Debaryomyces hansenii0 aMicrobial production of xylitol from Dxylose and sugarcane bagas  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcFEB  a3304-33080 v1023 a<p>A thermotolerant yeast capable of fermenting xylose to xylitol at 40 C was isolated and identified as a strain of Debaryomyces hansenii by ITS sequencing. This paper reports the production of xylitol from D-xylose and sugarcane bagasse hemicellulose by free and Ca-alginate immobilized cells of D. hansenii. The efficiency of free and immobilized cells were compared for xylitol production from D-xylose and hemicellulose in batch culture at 40 degrees C. The maximum xylitol produced by free cells was 68.6 g/L from 100 g/L of xylose, with a yield of 0.76 g/g and volumetric productivity 0.44 g/L/h. The yield of xylitol and volumetric productivity were 0.69 g/g and 0.28 g/L/h respectively from hemicellulosic hydrolysate of sugarcane bagasse after detoxification with activated charcoal and ion exchange resins. The Ca-alginate immobilized D. hansenii cells produced 73.8 g of xylitol from 100 g/L of xylose with a yield of 0.82 g/g and volumetric productivity of 0.46 g/L/h and were reused for five batches with steady bioconversion rates and yields. (C) 2010 Elsevier Ltd. All rights reserved.</p>10aImmobilization10aSugarcane bagasse hemicellulose10aThermotolerant Debaryomyces hansenii10axylitol10aXylose1 aPrakash, Gyan1 aVarma, Anjanikumar1 aPrabhune, Asmita1 aShouche, Yogesh1 aRao, Mala  uhttps://library.ncl.res.in/content/microbial-production-xylitol-d-xylose-and-sugarcane-bagasse-hemicellulose-using-newly-002314nas a2200217   4500008004100000022001400041245015200055210006900207260005700276300001000333490000700343520147800350653001301828653001201841653001101853653003601864100001801900700002701918700002101945856013001966       2013                        eng d  a1590-426100aEvaluation of ethanol production by a new isolate of yeast during fermentation in synthetic medium and sugarcane bagasse hemicellulosic hydrolysate0 aEvaluation of ethanol production by a new isolate of yeast durin  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcMAR  a63-700 v633 a<p>A new xylose fermenting yeast was isolated from over-ripe banana by enrichment in xylose-containing medium. The phylogenetic analysis of ITS1-5.8S-ITS2 region sequences of ribosomal RNA of isolate BY2 revealed that it shows affiliation to genus Pichia and clades with Pichia caribbica. In batch fermentation, Pichia strain BY2 fermented xylose, producing 15 g l(-1) ethanol from 30 g l(-1) xylose under shaking conditions at 28A degrees C, with ethanol yield of 0.5 g g(-1) and volumetric productivity of 0.31 g l(-1) h(-1). The optimum pH range for ethanol production from xylose by Pichia strain BY2 was 5-7. Pichia strain BY2 also produced 6.08 g l(-1) ethanol from 30 g l(-1) arabinose. Pichia strain BY2 can utilize sugarcane bagasse hemicellulose acid hydrolysate for alcohol production, efficiency of fermentation was improved by neutralization, and sequential use of activated charcoal adsorption method. Percent total sugar utilized and ethanol yield for the untreated hydrolysate was 17.14% w/v and 0.33 g g(-1), respectively, compared with 66.79% w/v and 0.45 g g(-1), respectively, for treated hemicellulose acid hydrolysate. This new yeast isolate showed ethanol yield of 0.45 g g(-1) and volumetric productivity of 0.33 g l(-1) h(-1) from sugarcane bagasse hemicellulose hydrolysate detoxified by neutralization and activated charcoal treatment, and has potential application in practical process of ethanol production from lignocellulosic hydrolysate.</p>10aD-xylose10aEthanol10aPichia10aSugarcane bagasse hemicellulose1 aHande, Aparna1 aMahajan, Siddharth, A.1 aPrabhune, Asmita  uhttps://library.ncl.res.in/content/evaluation-ethanol-production-new-isolate-yeast-during-fermentation-synthetic-medium-and-0