02760nas a2200229   4500008004100000022001400041245009800055210006900153260010600222300001200328490000700340520187700347653003602224653002502260653001902285653001802304653002602322653002502348100001802373700001402391856012502405       2012                        eng d  a0360-128500aTrends in bioconversion of lignocellulose: biofuels, platform chemicals & biorefinery concept0 aTrends in bioconversion of lignocellulose biofuels platform chem  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAUG  a522-5500 v383 a<p>Bioconversion of renewable lignocellulosic biomass to biofuel and value added products are globally gaining significant prominence. Market forces demonstrate a drive towards products benign to natural environment increasing the importance of renewable materials. The development of second generation bioethanol from lignocellulosic biomass serves many advantages from both energy and environmental point of views. Biomass an inexpensive feedstock considered sustainable and renewable, is an option with the potential to replace a wide diversity of fossil based products within the energy sector; heat, power, fuels, materials and chemicals. Lignocellulose is a major structural component of woody and non-woody plants and consists of cellulose, hemicellulose and lignin. The effective utilization of all the three components would play a significant role in the economic viability of cellulosic ethanol. Biomass conversion process involves five major steps, choice of suitable biomass, effective pretreatment, production of saccharolytic enzymes-cellulases and hemicellulases, fermentation of hexoses and pentoses and downstream processing. Within the context of production of fuels from biomass, pretreatment has come to denote processes by which cellulosic biomass is made amenable to the action of hydrolytic enzymes. The limited effectiveness of current enzymatic process on lignocellulose is thought to be due to the relative difficulties in pretreating the feedstocks. The present review is a comprehensive state of the art describing the advancement in recent pretreaments, metabolic engineering approaches with special emphasis on the latest developments in consolidated biomass processing, current global scenario of bioethanol pilot plants and biorefinery concept for the production of biofuels and bioproducts. (C) 2012 Elsevier Ltd. All rights reserved.</p>10aConsolidated biomass processing10aLifecycle assessment10aLignocellulose10aPre-treatment10aSaccharifying enzymes10aValue-added products1 aMenon, Vishnu1 aRao, Mala  uhttps://library.ncl.res.in/content/trends-bioconversion-lignocellulose-biofuels-platform-chemicals-biorefinery-concept-002591nas a2200241   4500008004100000022001400041245011800055210006900173260000800242300001200250490000700262520179600269653001502065653001402080653001802094653001902112653002502131653001002156100001802166700001402184700001902198856013202217       2023                        eng d  a0233-111X00aMultipurpose cellulases of Promicromonospora sp. VP111, with broad substrate specificity and tolerance properties0 aMultipurpose cellulases of Promicromonospora sp VP111 with broad  cJUL  a790-8000 v633 a<p>
	Cellulolytic actinobacterium, Promicromonospora sp. VP111 concomitantly produced cellulases (CELs), xylanase and pectinase when grown on commercial cellulose and untreated agricultural lignocellulosic residues (wheat straw and sugarcane bagasse). Secreted CELs hydrolyzed (enhanced with Co2+ ion) multiple cellulosic substrates, including sodium carboxymethyl cellulose (Na-CMC), Whatman filter paper no. 1, microcrystalline cellulose (avicel), p-nitrophenyl-beta-D-glucopyranoside (pNPG), laminarin, and cellulose powder. The CELs showed stabilities in the presence of various chemicals, including glucose (0.2 M), detergents (1%, w/v or v/v), denaturants (1%, w/v or v/v), and sodium chloride (NaCl, 30%, w/v). The CELs were fractionated using ammonium sulfate precipitation and dialysis. Activities (%) of fractionated CELs were retained at 60 degrees C for endoglucanase/carboxymethyl cellulase (CMCase) (88.38), filter paper cellulase (FPase) (77.55), and beta-glucosidase (90.52), which indicated of thermo-stability. Similarly, the activities (%) for CMCase (85.79), FPase (82.48), and beta-glucosidase (85.92) at pH 8.5 indicated of alkaline-stability. Kinetic factors, K-m and V-max for endoglucanase component of fractionated CELs were 0.014 g/l and 158.23 mu M glucose/min/mL, respectively. Fractionated CELs yielded activation energies (kJ/mol) of 17.933, 6.294, and 4.207 for CMCase, FPase, and beta-glucosidase activities, respectively in linear thermostable Arrhenius plots. Thus, this study reports on the multipurpose CELs from an untreated agricultural residue utilizing Promicromonospora in relation to broad substrate specificity, halo-tolerance, alkaline-tolerance, detergent-tolerance, thermo-tolerance, organic solvent-tolerance, and end product-tolerance.</p>
10acellulases10acellulose10aEndoglucanase10aLignocellulose10aPromicromonospora sp10aVP1111 aThomas, Lebin1 aRam, Hari1 aSingh, Ved, P.  uhttps://library.ncl.res.in/content/multipurpose-cellulases-promicromonospora-sp-vp111-broad-substrate-specificity-and-tolerance01605nas a2200241   4500008004100000022001400041245008300055210006900138260000900207300001400216490000700230520084100237653001101078653002501089653001301114653001901127653001901146653002401165653001901189100002501208700002101233856010901254       2024                        eng d  a0161-494000aAdvances in catalytic conversion of lignocellulosic biomass to ethylene glycol0 aAdvances in catalytic conversion of lignocellulosic biomass to e  cOCT   a1137-12070 v663 a<p>
	Ethylene glycol (EG) is an industrial chemical with multiple applications in polymers, anti-freeze agents, coolants, desiccants and de-icing fluids. It is prepared mainly from fossil feedstock resources. However, its manufacture from renewable sources like lignocellulosic biomass is attractive from the view points of carbon-neutrality and environmental benefits. A few industries have already ventured or committed to produce biomass-derived EG (bio-EG) on a pilot to demonstration scale. At present bio-EG is more expensive than the EG made from fossil resources. Advances are happening in developing more efficient and selective catalysts for the direct conversion of raw biomass and its hydrolysis products (cellulose and glucose) into bio-EG. This review presents the recent advances in catalysts for producing bio-EG.</p>
10a2-diol10abiomass to chemicals10aethane-110aHydrogenolysis10aLignocellulose10aMonoethylene glycol10asolid catalyst1 aEnjamuri, Nagasuresh1 aDarbha, Srinivas  uhttps://library.ncl.res.in/content/advances-catalytic-conversion-lignocellulosic-biomass-ethylene-glycol