Hydrothermal processing, as an alternative for upgrading agriculture residues and marine biomass according to the biorefinery concept: A review

Elliot, 2004, Biomass, chemicals from, 163 Octave, 2009, Biorefinery: toward an industrial metabolism, Biochemie, 91, 659, 10.1016/j.biochi.2009.03.015 Cherubini, 2010, Crop residues as raw materials for biorefinery systems- A LCA case study, Applied Energy, 87, 47, 10.1016/j.apenergy.2009.08.024 Pronyk, 2011, Production of carbohydrates, lignins, and minor components from triticale straw by hydrothermal treatment, Journal of Agricultural and Food Chemistry, 59, 3788, 10.1021/jf104543a Roesijadi, 2010 Chisti, 2007, Biodiesel from microalgae, Biotechnology Advances, 25, 294, 10.1016/j.biotechadv.2007.02.001 Bobleter, 1976, The hydrothermal degradation of cellulosic matter to sugars and their fermentative conversion to protein, Journal of Applied Polymer Science, 20, 2083, 10.1002/app.1976.070200805 Ruiz, 2011, Development and characterization of an environmentally friendly process sequence (autohydrolysis and organosolv) for wheat straw delignification, Applied Biochemistry and Biotechnology, 164, 629, 10.1007/s12010-011-9163-9 Romaní, 2011, Eucalyptus globulus wood fractionation by autohydrolysis and organosolv delignification, Bioresource Technology, 102, 5896, 10.1016/j.biortech.2011.02.070 Feria, 2011, Valorization of Leucaena leucocephala for energy and chemicals from autohydrolysis, Biomass & Bioenergy, 35, 2224, 10.1016/j.biombioe.2011.02.038 Romaní, 2012, Bioethanol production from autohydrolyzed Eucalyptus globulus by Simultaneous Saccharification and Fermentation operating at high solids loading, Fuel, 94, 305, 10.1016/j.fuel.2011.12.013 Ruiz, 2011, Evaluation of a hydrothermal process for pretreatment of wheat straw-effect of particle size and process conditions, Journal of Chemical Technology & Biotechnology, 86, 88, 10.1002/jctb.2518 Díaz, 2010, Hydrothermal pre-treatment of rapessed straw, Bioresource Technology, 101, 2428, 10.1016/j.biortech.2009.10.085 Petersen, 2009, Optimization of hydrothermal pretreatment of wheat straw for production of bioethanol at low water consumption without addition of chemicals, Biomass & Bioenergy, 33, 834, 10.1016/j.biombioe.2009.01.004 Chaogang, 2005, Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of cellulose, Bioresource Technology, 96, 1978, 10.1016/j.biortech.2005.01.012 Yu, 2010, Understanding the primary liquid products of cellulose hydrolysis in hot-compressed water at various reaction temperatures, Energy Fuels, 24, 1963, 10.1021/ef9013746 Suryawati, 2009, Effect of hydrothermolysis process conditions on pretreated switchgrass composition and ethanol yield by SSF with Kluyveromyces marxianus IMB4, Process Biochemistry, 44, 540, 10.1016/j.procbio.2009.01.011 Faga, 2010, Ethanol production through simultaneous saccharification and fermentation of switchgrass using Saccharomyces cerevisiae D5A and thermotolerant Kluyveromyces marxianus IMB, Bioresource Technology, 101, 2273, 10.1016/j.biortech.2009.11.001 Pérez, 2008, Optimizing liquid hot water pretreatment conditions to enhance sugar recovery from wheat straw for fuel-ethanol production, Fuel, 87, 3640, 10.1016/j.fuel.2008.06.009 Kim, 2009, Enzymatic digestion of liquid hot water pretreated hybrid poplar, Biotechnology Progress, 25, 340, 10.1002/btpr.137 Ingram, 2011, Comparison of different pretreatment methods for lignocellulosic materials. Part I: Conversion of rye straw to valuable products, Bioresource Technology, 102, 5221, 10.1016/j.biortech.2011.02.005 Garrote, 2008, Non-isothermal autohydrolysis of barley husks: product distribution and antioxidant activity of ethyl acetate soluble fractions, Journal of Food Engineering, 84, 544, 10.1016/j.jfoodeng.2007.06.021 Weil, 1997, Pretreatment of yellow poplar sawdust by pressure cooking in water, Applied Biochemistry and Biotechnology, 68, 21, 10.1007/BF02785978 Bobleter, 2005, Hydrothermal degradation and fractionation of saccharides and polysaccharides, 893 Yu, 2010, Pretreatment of rice straw by a hot-compressed water process for enzymatic hydrolysis, Applied Biochemistry and Biotechnology, 160, 539, 10.1007/s12010-008-8420-z Romaní, 2010, Bioethanol production from hydrothermal pretreated Eucalyptus globulus wood, Bioresource Technology, 101, 8706, 10.1016/j.biortech.2010.06.093 Cybulska, 2010, Hydrothermal pretreatment and enzymatic hydrolysis of prairie cord grass, Energy Fuels, 24, 718, 10.1021/ef9009179 Garrote, 1999, Hydrothermal processing of lignocellulosic materials, Holz Roh Werkst, 57, 191, 10.1007/s001070050039 Mosier, 2005, Optimization of pH controlled liquid hot water pretreatment of corn stover, Bioresource Technology, 96, 1986, 10.1016/j.biortech.2005.01.013 Garrote, 2003, Valorisation of waste fractions from autohydrolysis of selected lignocellulosic materials, Journal of Chemical Technology & Biotechnology, 78, 392, 10.1002/jctb.760 Zhang, 2007, Fractionating recalcitrant lignocellulose at modest reaction conditions, Biotechnology and Bioengineering, 97, 214, 10.1002/bit.21386 Liu, 2010, High concentration ethanol production from corncob residues by fed-batch strategy, Bioresource Technology, 101, 4952, 10.1016/j.biortech.2009.11.013 Wang, 2011, An environmentally friendly and efficient method for xylitol bioconversion with high-temperature-steaming corncob hydrolysate by adapted Candida tropicalis, Process Biochemistry, 46, 1619, 10.1016/j.procbio.2011.05.004 Weiss, 2010, Impact of corn stover composition on hemicellulose conversion during dilute acid pretreated and enzymatic cellulose digestibility of the pretreated solids, Bioresource Technology, 101, 674, 10.1016/j.biortech.2009.08.082 Liu, 2010, Improved hydrogen production via thermophilic fermentation of corn stover by microwave-assisted acid pretreatment, International Journal of Hydrogen Energy, 35, 8945, 10.1016/j.ijhydene.2010.06.025 Talebnia, 2010, Production of bioethanol from wheat straw: an overview on pretreatment, hydrolysis and fermentation, Bioresource Technology, 101, 4744, 10.1016/j.biortech.2009.11.080 Hsu, 2010, Effect of dilute acid pretreatment of rice straw on structural properties and enzymatic hydrolysis, Bioresource Technology, 101, 4907, 10.1016/j.biortech.2009.10.009 Yadav, 2011, Bioethanol fermentation of concentrated rice straw hydrolysate using co-culture of Saccharomyces cerevisiae and Pichia stipites, Bioresource Technology, 102, 6473, 10.1016/j.biortech.2011.03.019 Mesa, 2010, Preliminary evaluation of organosolv pre-treatment of sugar cane bagasse for glucose production: application of 23 experimental design, Applied Energy, 87, 109, 10.1016/j.apenergy.2009.07.016 Maeda, 2011, Enzymatic hydrolysis of pretreated sugar cane bagasse using Penicillium funiculosum and Trichoderma harzianum cellulases, Process Biochemistry, 46, 1196, 10.1016/j.procbio.2011.01.022 Sun, 2011, Structural characterization and isolation of lignin and hemicelluloses from barley straw, Industrial Crops and Products, 33, 588, 10.1016/j.indcrop.2010.12.005 García-Aparicio, 2011, Second-generation ethanol production from steam exploded barley straw by Kluyveromyces marxianus CECT 10875, Fuel, 90, 1624 Garrote, 2007, Autohydrolysis of agricultural residues: study of reaction byproducts, Bioresource Technology, 98, 1951, 10.1016/j.biortech.2006.07.049 Abbas, 2010, Global potential of rice husk as a renewable feedstock for ethanol biofuel production, Bioenergy Research, 3, 328, 10.1007/s12155-010-9088-0 Gullón, 2010, Production of oligosaccharides and sugar from rye straw: a kinetic approach, Bioresource Technology, 101, 6676, 10.1016/j.biortech.2010.03.080 Lu, 2009, Optimization of H2SO4-catalyzed hydrothermal pretreatment of rapeseed straw for bioconversion to ethanol: focusing on pretreatment at high solids content, Bioresource Technology, 100, 3048, 10.1016/j.biortech.2009.01.008 Ruiz, 2008, Evaluation of steam explosion pre-treatment fro enzymatic hydrolysis of sunflower stalks, Enzyme and Microbial Technology, 42, 160, 10.1016/j.enzmictec.2007.09.002 Caparrós, 2008, Hydrothermal treatment and ethanol pulping of sunflower stalks, Bioresource Technology, 99, 1368, 10.1016/j.biortech.2007.01.045 Zhang, 2011, The effects of four different pretreatments on enzymatic hydrolysis of sweet sorghum bagasse, Bioresource Technology, 102, 4585, 10.1016/j.biortech.2010.12.093 Goshadrou, 2011, Bioethanol production from sweet sorghum bagasse by Mucor hiemalis, Industrial Crops and Products, 34, 1219, 10.1016/j.indcrop.2011.04.018 Keshwani, 2009, Switchgrass for bioethanol and other value-added applications. A review, Bioresource Technology, 100, 1515, 10.1016/j.biortech.2008.09.035 Hu, 2011, Comparative studies on hydrothermal pretreatment and enzymatic saccharification of leaves and internodes of alamo switchgrass, Bioresource Technology, 14, 7224, 10.1016/j.biortech.2011.04.029 Ai, 2010, Fiber length and pulping characteristics of switchgrass, alfalfa stems, hybrid poplar and willow biomasses, Bioresource Technology, 101, 215, 10.1016/j.biortech.2009.07.090 Wang, 2010, Sodium hydroxide pretreatment and enzymatic hydrolysis of coastal Bermuda grass, Bioresource Technology, 101, 3583, 10.1016/j.biortech.2009.12.097 Tian, 2011, Comparisons of SPORL and dilute acid pretreatments for sugar and ethanol productions from aspen, Biotechnology Progress, 27, 419, 10.1002/btpr.545 Pan, 2006, Bioconversion of Hybrid poplar to ethanol and co-products using an organosolv fractionation process: optimization of process yields, Biotechnology and Bioengineering, 94, 851, 10.1002/bit.20905 Gonzalez, 2011, Converting Eucalyptus biomass into ethanol: financial and sensitivity analysis in a co-current dilute acid process. Part II, Biomass & Bioenergy, 35, 767, 10.1016/j.biombioe.2010.10.025 Araque, 2008, Evaluation of organosolv pretreatment for conversion of Pinus radiata D don to ethanol, Enzyme and Microbial Technology, 43, 214, 10.1016/j.enzmictec.2007.08.006 Shafiei, 2010, Pretreatment of spruce and oak by N-methylmorpholine-N-oxide (NMMO) for efficient conversion of their cellulose to ethanol, Bioresource Technology, 101, 4914, 10.1016/j.biortech.2009.08.100 Lee, 2010, Pretreatment of waste newspaper using ethylene glycol for bioethanol production, Biotechnology and Bioprocess Engineering, 15, 1094, 10.1007/s12257-010-0158-0 Peng, 2011, Conversion of paper sludge to ethanol by separate hydrolysis and fermentation (SHF) using Saccharomyces cerevisiae, Biomass & Bioenergy, 35, 1600, 10.1016/j.biombioe.2011.01.059 Kim, 2010, Effect of compositional variability of distiller's grains on cellulosic ethanol production, Bioresource Technology, 101, 5385, 10.1016/j.biortech.2010.02.054 Carvalheiro, 2005, Kinetic modeling of brewery's spent grain autohydrolysis, Biotechnology Progress, 21, 233, 10.1021/bp049764z Pires, 2012, A New approach on brewer's spent grains treatment and potential use as lignocellulosic yeast cells carriers, Journal of Agricultural and Food Chemistry, 60, 5994, 10.1021/jf300299m Griebl, 2006, Xylo-oligosaccharide (XOS) formation through hydrothermolysis of xylan derived from viscose process, Macromolecular Symposia, 232, 107, 10.1002/masy.200551413 Gullón, 2010, Selected process alternatives for biomass refining. A review, The Open Agriculture Journal, 4, 135, 10.2174/1874331501004010135 Gírio, 2010, Hemicellulose for fuel ethanol: a review, Bioresource Technology, 101, 4775, 10.1016/j.biortech.2010.01.088 Vila, 2011, Extracting value from Eucalyptus wood before kraft pulping: effects of hemicelluloses solubilization on pulp properties, Bioresource Technology, 102, 5251, 10.1016/j.biortech.2011.02.002 Ruiz, 2012, Bioethanol production from hydrothermal pretreated wheat straw by a flocculating Saccharomyces cerevisiae strain-effect of process conditions, Fuel, 95, 528, 10.1016/j.fuel.2011.10.060 Michelin, 2012, Production of xylanase and β-xylosidase from autohydrolysis liquor of corncob using two fungal strains, Bioprocess and Biosystems Engineering, 35, 1185, 10.1007/s00449-012-0705-5 Ruiz HA, Cerqueira MA, Silva HD, Rodríguez-Jasso RM, Vicente AA, Teixeira JA. Biorefinery valorization of autohydrolysis wheat straw hemicellulose to be applied in a polymer-blend film. Carbohydrate Polymers 2013;92:2154–62 He, 2008, Application of hydrothermal reaction in resource recovery of organic wastes, Resources, Conservation and Recycling, 52, 691, 10.1016/j.resconrec.2007.11.003 Peterson, 2008, Thermochemical biofuel production in hydrothermal media: a review of sub- and supercritical water technologies, Energy & Environmental Science, 1, 32, 10.1039/b810100k Loppinet-Serani, 2010, Supercritical water for environmental technologies, Journal of Chemical Technology & Biotechnology, 85, 583, 10.1002/jctb.2323 Möller, 2011, Subcritical water as reaction environment: fundamentals of hydrothermal biomass transformation, ChemSusChem, 4, 566, 10.1002/cssc.201000341 Liu, 2010, Woody biomass: niche position as a source of sustainable renewable chemicals and energy and kinetics of hot-water extraction/hydrolysis, Biotechnology Advances, 28, 563, 10.1016/j.biotechadv.2010.05.006 Ballesteros, 2002, Enzymatic hydrolysis of steam exploded herbaceous agricultural waste (Brassica carinata) at different particle sizes, Process Biochemistry, 38, 187, 10.1016/S0032-9592(02)00070-5 Duff, 1996, Bioconversion of forest products industry waste cellulosics to fuel ethanol: a review, Bioresource Technology, 55, 1, 10.1016/0960-8524(95)00122-0 Kálmán, 2002, Dilute sulphuric acid pretreatment of corn stover at long residence times, Chemical and Biochemical Engineering Quarterly, 16, 151 Karaö, 2004, Low temperature hydrothermal treatment of biomass effect of reaction parameters on products and boiling point distributions, Energy & Fuels, 18, 234, 10.1021/ef030133g Brownell, 1986, Steam-explosion pretreatment of wood: effect of chip size, acid, moisture content and pressure drop, Biotechnology and Bioengineering, 28, 792, 10.1002/bit.260280604 Mosier, 2005, Features of promising technologies for pretreatment of lignocellulosic biomass, Bioresource Technology, 96, 673, 10.1016/j.biortech.2004.06.025 Ballesteros, 2000, Effect of chip size on steam explosion pretreatment of softwood, Applied Biochemistry and Biotechnology, 84-86, 10.1385/ABAB:84-86:1-9:97 Hosseini, 2009, Multiscale modelling of hydrothermal biomass pretreatment for chip size optimization, Bioresource Technology, 100, 2621, 10.1016/j.biortech.2008.11.030 Cullis, 2004, Effect of initial moisture content and chip size on the bioconversion efficiency of softwood lignocellulosics, Biotechnology and Bioengineering, 85, 413, 10.1002/bit.10905 Rodríguez, 2009, Influence of variables in the hydrothermal treatment of rice straw on the composition of the resulting fractions, Bioresource Technology, 100, 4863, 10.1016/j.biortech.2009.04.030 Weil, 1998, Continuous pH monitoring during pretreatment of yellow poplar wood sawdust by pressure cooking in water, Applied Biochemistry and Biotechnology, 70–72, 99, 10.1007/BF02920127 Mosier, 2005, Industrial scale-up of pH-controlled liquid hot water pretreatment of corn fiber for fuel ethanol production, Applied Biochemistry and Biotechnology, 125, 77, 10.1385/ABAB:125:2:077 Cara, 2007, Liquid hot water pretreatment of olive tree pruning residues, Applied Biochemistry and Biotechnology, 136–140, 379, 10.1007/s12010-007-9066-y Martínez, 2010, Kinetic assessment on the autohydrolysis of pectin-rich by-products, Chemical Engineering Journal, 162, 480, 10.1016/j.cej.2010.05.048 Hansen, 2011, Pretreatment and enzymatic hydrolysis of wheat straw (Triticum aestivum L.)–The impact of lignin relocation and plant tissues on enzymatic accessibility, Bioresource Technology, 102, 2804, 10.1016/j.biortech.2010.10.030 Boussarsar, 2009, Optimization of sugarcane bagasse conversion by hydrothermal treatment for the recovery of xylose, Bioresource Technology, 100, 6537, 10.1016/j.biortech.2009.07.019 Archambault-Leger, 2012, Integrated analysis of hydrothermal flow through pretreatment, Biotechnology for Biofuels, 5, 49, 10.1186/1754-6834-5-49 Phaiboonsilpa, 2011, Two-step hydrolysis of nipa (Nypa fruticans) frond as treated by semi-flow hot-compressed water, Holzforschung, 65, 659, 10.1515/hf.2011.046 Liu, 2005, Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of cellulose, Bioresource Technology, 96, 1978, 10.1016/j.biortech.2005.01.012 Ingram, 2009, Semi-continuous liquid hot water pretreatment of rye straw, The Journal of Supercritical Fluids, 48, 238, 10.1016/j.supflu.2008.10.023 Yu, 2009, Characteristics and precipitation of glucose oligomers in the fresh liquid products obtained from the hydrolysis of cellulose in hot-compressed water, Industrial & Engineering Chemistry Research, 48, 10682, 10.1021/ie900768m Pronyk, 2010, Kinetic modeling of hemicellulose hydrolysis from triticale straw in a pressurized low polarity water flow-through reactor, Industrial & Engineering Chemistry Research, 49, 6367, 10.1021/ie1003625 Liu, 2004, Impact of fluid velocity on hot water only pretreatment of corn stover in a flowthrough reactor, Applied Biochemistry and Biotechnology, 113–116, 977, 10.1385/ABAB:115:1-3:0977 Rogalinski, 2008, Hydrolysis of lignocellulosic biomass in water under elevated temperatures and pressures, The Journal of Supercritical Fluids, 47, 54, 10.1016/j.supflu.2008.05.003 Saito, 2009, Susbcritical water reaction behavior of d-glucose as a model compound for biomass using two different continuous-flow reactor configurations, Chemical Engineering & Technology, 32, 527, 10.1002/ceat.200800537 Kumar, 2010, Cellulose pretreatment in subcritical water: effect of temperature on molecular structure and enzymatic reactivity, Bioresource Technology, 101, 1337, 10.1016/j.biortech.2009.09.035 Makishima, 2009, Development of continuous flow type hydrothermal reactor for hemicellulose fraction from corncob, Bioresource Technology, 100, 2842, 10.1016/j.biortech.2008.12.023 Romaní, 2010, Experimental assessment on the enzymatic hydrolysis of hydrothermal pretreated eucalyptus globulus wood, Industrial & Engineering Chemistry Research, 49, 4653, 10.1021/ie100154m Overend, 1987, Fractionation of lignocellulosic by steam-aqueous pretreatments, Philosophical Transactions of the Royal Society of London, 321, 523, 10.1098/rsta.1987.0029 Chornet, 1991, Phenomenological kinetics and reaction engineering aspects of steam/aqueous treatments, 21 Yanagida, 2010, Application of the severity parameter for predicting viscosity during hydrothermal processing of dewatered sewage sludge for a commercial PFBC plant, Bioresource Technology, 101, 2034, 10.1016/j.biortech.2009.09.077 Simpson, 2006, Estimating heating times of wood boards, square timbers, and logs in saturated steam by multiple regression, Forest Products Journal, 56, 26 Hosseini, 2010, Multiscale modeling of hydrothermal pretreatment: from hemicellulose hydrolysis to biomass size optimization, Energy Fuels, 24, 4673, 10.1021/ef9012246 Pedersen, 2010, Lignocellulose pretreatment severity-relating pH to biomatrix opening, New Biotechnology, 27, 739, 10.1016/j.nbt.2010.05.003 Jacquet, 2011, Influence of steam explosion on the thermal stability of cellulose fibres, Polymer Degradation and Stability, 96, 1582, 10.1016/j.polymdegradstab.2011.05.021 Aguedo, 2013, Fast and high yield recovery of arabinose from destarched wheat bran, Industrial Crops and Products, 43, 318, 10.1016/j.indcrop.2012.07.029 Garrote, 1999, Mild autohydrolysis: an environmentally friendly technology for xylooligosaccharides production from wood, Journal of Chemical Technology & Biotechnology, 74, 1101, 10.1002/(SICI)1097-4660(199911)74:11<1101::AID-JCTB146>3.0.CO;2-M Garrote, 2001, Kinetic modelling of corncob autohydrolysis, Process Biochemistry, 36, 571, 10.1016/S0032-9592(00)00253-3 Garrote, 2002, Autohydrolysis of corncob: study of non-isothermal operation for xylooligosaccharides production, Journal of Food Engineering, 52, 211, 10.1016/S0260-8774(01)00108-X Nabarlatz, 2004, Kinetic modeling of the autohydrolysis of lignocellulosic biomass for the production of hemicellulose-derived oligosaccharides, Industrial & Engineering Chemistry Research, 43, 4124, 10.1021/ie034238i Zhuang, 2009, Kinetic study of hydrolysis of xylan and agricultural wastes with hot liquid water, Biotechnology Advances, 27, 578, 10.1016/j.biotechadv.2009.04.019 Martínez, 2010, Kinetic assessment on the autohydrolysis of pectin-rich by-products, Chemical Engineering Journal, 162, 480, 10.1016/j.cej.2010.05.048 Zhao, 2009, Supercritical hydrolysis of cellulose for oligosaccharide production in combined technology, Chemical Engineering Journal, 150, 411, 10.1016/j.cej.2009.01.026 Xu, 2010, Ethanol production from hydrothermal pretreated corn stover with a loop reactor, Biomass & Bioenergy, 34, 334, 10.1016/j.biombioe.2009.11.004 Walsum, 1996, Conversion of lignocellulosics pretreated with liquid hot water to ethanol, Applied Biochemistry and Biotechnology, 57–58, 157, 10.1007/BF02941696 Pérez, 2007, Effect of process variables on liquid hot water pretreatment of wheat straw for bioconversion to fuel-ethanol in a batch reactor, Journal of Chemical Technology & Biotechnology, 82, 929, 10.1002/jctb.1765 Negro, 2003, Hydrothermal pretreatment conditions to enhance ethanol production from poplar biomass, Applied Biochemistry and Biotechnology, 105–108, 87, 10.1385/ABAB:105:1-3:87 Rohowsky B, Häßler T, Gladis A, Remmele E, Schieder D, Faulstich M Feasibility of simultaneous saccharification and juice co-fermentation on hydrothermal pretreated sweet sorghum bagasse for ethanol production. Applied Energy 2013;102:211-19. Brandon, 2011, Ethanol and co-product generation from pressurized batch hot water pretreated T85 bermudagrass and Merkeron napiergrass using recombinant Escherichia coli as biocatalyst, Biomass & Bioenergy, 35, 3667, 10.1016/j.biombioe.2011.05.021 Ares-Peón IA, Romaní A, Garrote G, Parajó JC. Invasive biomass valorization: environmentally friendly processes for obtaining second generation bioethanol and saccharides from Ulex europæus. Journal of Chemical Technology & Biotechnology (In press); doi:10.1002/jctb.3963. Kristensen, 2008, Cell-wall structural changes in wheat straw pretreated for bioethanol production, Biotechnology for Biofuels, 1 Zhang, 2012, Rapid selection and identification of Miscanthus genotypes with enhanced glucan and xylan yields from hydrothermal pretreatment followed by enzymatic hydrolysis, Biotechnology for Biofuels, 5, 56, 10.1186/1754-6834-5-56 Cannella, 2012, Production and effect of aldonic acids during enzymatic hydrolysis of lignocellulose at high dry matter content, Biotechnology for Biofuels, 5, 26, 10.1186/1754-6834-5-26 Requejo, 2012, Valorization of residual woody biomass (Olea europaea trimmings) based on aqueous fractionation, Journal of Chemical Technology & Biotechnology, 87, 87, 10.1002/jctb.2687 Hideno, 2012, Combination of hot compressed water treatment and wet disk milling for high sugar recovery yield in enzymatic hydrolysis of rice straw, Bioresource Technology, 104, 743, 10.1016/j.biortech.2011.11.014 Wang W Yuan T, Wang K, Cui B, Dai Y. Statistical optimization of cellulase production by the brown rot fungi, Fomitopsis palustris, and its application in the enzymatic hydrolysis of LHW-pretreated woody biomass. Process Biochemistry 2012;47:2552–6 Menon, 2012, Trends in bioconversion of lignocellulose: biofuels, platform chemicals & biorefinery concept, Progress in Energy and Combustion Science, 38, 522, 10.1016/j.pecs.2012.02.002 Zhao, 2012, Biomass recalcitrance. Part II: Fundamentals of different pre-treatments to increase the enzymatic digestibility of lignocellulose, Biofuels, Bioproducts and Biorefining, 6, 561, 10.1002/bbb.1350 Goh, 2010, Hot compresses water pretreatment of oil palm fronds to enhance glucose recovery fro production of second generation bio-ethanol, Bioresource Technology, 101, 7362, 10.1016/j.biortech.2010.04.048 Lee, 2009, Autohydrolysis pretreatment of costal Bermuda grass for increased enzyme hydrolysis, Bioresource Technology, 100, 6434, 10.1016/j.biortech.2008.12.068 Zeng, 2007, Microscopic examination of changes of plant cell structure in corn stover due to hot water pretreatment and enzymatic hydrolysis, Biotechnology and Bioengineering, 2, 265, 10.1002/bit.21298 Thomsen, 2008, Hydrothermal treatment of wheat straw at pilot plant scale using a three-step reactor system aiming at high hemicellulose recovery, high cellulose digestibility and low lignin hydrolysis, Bioresource Technology, 99, 4221, 10.1016/j.biortech.2007.08.054 Hu, 2011, Hydrothermal pretreatment of switchgrass, Industrial & Engineering Chemistry Research, 50, 4225, 10.1021/ie101886d Xiao, 2011, Impact of hot compressed water pretreatment on the structural changes of woody biomass for bioethanol production, Biology Research, 6, 1576 Yu, 2010, Two-step liquid hot water pretreatment of Eucalyptus grandis to enhance sugar recovery and enzymatic digestibility of cellulose, Bioresource Technology, 101, 4895, 10.1016/j.biortech.2009.11.051 Ares-Peón, 2011, Enzymatic hydrolysis of autohydrolyzed barley husks, Journal of Chemical Technology & Biotechnology, 86, 251, 10.1002/jctb.2511 Ruiz, 2012, Kinetic modeling of enzymatic saccharification using wheat straw pretreated under autohydrolysis and organosolv process, Industrial Crops and Products, 36, 100, 10.1016/j.indcrop.2011.08.014 Cybulska, 2012, Catalyzed modified clean fractionation of prairie cordgrass integrated with hydrothermal post-treatment, Biomass & Bioenergy, 46, 389, 10.1016/j.biombioe.2012.08.002 Silva, 2011, Fermentation of cellulosic hydrolysates obtained by enzymatic saccharification of sugarcane bagasse pretreated by hydrothermal processing, Journal of Industrial Microbiology and Biotechnology, 38, 809, 10.1007/s10295-010-0815-5 Thomsen, 2006, Preliminary results on optimization of pilot scale pretreatment of wheat straw used in coproduction of bioethanol and electricity, Applied Biochemistry and Biotechnology, 126–132, 448, 10.1385/ABAB:130:1:448 Larsen, 2008, The IBUS process–lignocellulosic bioethanol close to a commercial reality, Chemical Engineering & Technology, 31, 765, 10.1002/ceat.200800048 Gnansounou, 2010, Production and use of lignocellulosic bioethanol in Europe: current situation and perspectives, Bioresource Technology, 101, 4842, 10.1016/j.biortech.2010.02.002 Modenbach, 2012, The use of high-solids loadings in biomass pretreatment—a review, Biotechnology and Bioengineering, 109, 1430, 10.1002/bit.24464 Larsen, 2012, Inbicon makes lignocellulosic ethanol a commercial reality, Biomass & Bioenergy, 46, 10.1016/j.biombioe.2012.03.033 Treasure, 2012, Co-production of electricity and ethanol, process economics of value prior combustion, Energy Conversion and Management, 62, 141, 10.1016/j.enconman.2012.04.002 Littlewood, 2013, Importance of policy support and feedstock prices one economic feasibility of bioethanol production from wheat straw in the UK, Renewable & Sustainable Energy Reviews, 17, 291, 10.1016/j.rser.2012.10.002 Sakaki, 2002, Saccharification of cellulose using a hot-compressed water-flow reactor, Industrial & Engineering Chemistry Research, 41, 661, 10.1021/ie010614s Jin, 2004, Conversion mechanism of cellulosic biomass to lactic acid in subcritical water and acid-base catalytic effect of subcritical water, Chemistry Letters, 33, 126, 10.1246/cl.2004.126 Garrote, 2003, Hydrothermal and pulp processing of Eucalyptus, Bioresource Technology, 88, 61, 10.1016/S0960-8524(02)00256-0 Alfaro, 2010, Integral valorization of tagasaste (Chamaecytisus proliferus) under hydrothermal and pulp processing, Bioresource Technology, 101, 7635, 10.1016/j.biortech.2010.04.059 Caparrós, 2008, New perspectives for Paulownia fortune L. valorization of the autohydrolysis and pulping processes, Bioresource Technology, 99, 741, 10.1016/j.biortech.2007.01.028 Kayserilioglu, 2003, Use of Xylan, an agricultural by-product, in wheat gluten based biodegradable films: mechanical, solubility and water vapor transfer rate properties, Bioresource Technology, 87, 239, 10.1016/S0960-8524(02)00258-4 Sun, 2005, Extraction and characterization of original lignin and hemicellulose from wheat straw, Journal of Agricultural and Food Chemistry, 53, 860, 10.1021/jf040456q Vegas, 2008, Hydrothermal processing of rice husks: effects of severity on products distribution, Journal of Chemical Technology & Biotechnology, 83, 965, 10.1002/jctb.1896 Carvalheiro, 2009, Wheat straw autohydrolysis: process optimization and products characterization, Applied Biochemistry and Biotechnology, 153, 84, 10.1007/s12010-008-8448-0 Parajó, 2004, Production of xylooligosaccharides by autohydrolysis of lignocellulosic materials, Trends in Food Science & Technology, 15, 115, 10.1016/j.tifs.2003.09.009 Gullón, 2008, Assessment on the fermentability of xylooligosaccharides from rice husks by probiotic bacteria, Journal of Agricultural and Food Chemistry, 56, 7482, 10.1021/jf800715b Carvalheiro, 2004, Production of oligosaccharides by autohydrolysis of brewery's spent grain, Bioresource Technology, 91, 93, 10.1016/S0960-8524(03)00148-2 Kabel, 2002, Hydrothermally treated xylan rich by-products yield different classes of xylo-oligosaccharides, Carbohydrate Polymers, 50, 47, 10.1016/S0144-8617(02)00045-0 Gullón, 2009, Aqueous pretreatment of agricultural wastes: characterization of soluble reaction products, Bioresource Technology, 100, 5840, 10.1016/j.biortech.2009.06.011 Nabarlatz, 2007, Purification of xylo-oligosaccharides from almond shells by ultra-filtration, Separation and Purification Technology, 53, 235, 10.1016/j.seppur.2006.07.006 Garrote, 2008, Coproduction of oligosaccharides and glucose from corncobs by hydrothermal processing and enzymatic hydrolysis, Industrial & Engineering Chemistry Research, 47, 1336, 10.1021/ie071201f Montané, 2006, Removal of lignin and associated impurities from xylo-oligosaccharides by activated carbon adsorption, Industrial & Engineering Chemistry Research, 45, 2294, 10.1021/ie051051d Vegas, 2006, Purification of oligosaccharides from rice husk autohydrolysis liquors by ultra-and nano-filtration, Desalination, 199, 541, 10.1016/j.desal.2006.03.124 Garrote, 2002, Non-isothermal autohydrolysis of Eucalyptus wood, Wood Science and Technology, 36, 111, 10.1007/s00226-001-0132-2 Garrote, 2001, Study on the deacetylation of hemicelluloses during the hydrothermal processing of Eucalyptus wood, Holz Roh Werkst, 59, 53, 10.1007/s001070050473 Rivas, 2002, Bioconversion of posthydrolysed autohydrolysis liquors: an alternative for xylitol production from corn cobs, Enzyme and Microbial Technology, 31, 431, 10.1016/S0141-0229(02)00098-4 Duarte, 2004, Comparison of two posthydrolysis processes of brewery's spent grain autohydrolysis liquor to produce a pentose-containing culture medium, Applied Biochemistry and Biotechnology, 113-116, 1041, 10.1385/ABAB:115:1-3:1041 Garrote, 2001, Manufacture of xylose-based fermentation media from corncobs by posthydrolysis of autohydrolysis liquors, Applied Biochemistry and Biotechnology, 95, 195, 10.1385/ABAB:95:3:195 Garrote, 2001, Generation of xylose solutions from Eucalyptus globulus wood by autohydrolysis-posthydrolysis processes: posthydrolysis kinetics, Bioresource Technology, 79, 155, 10.1016/S0960-8524(01)00044-X Vázquez, 2001, Production of xylose-containing fermentation media by enzymatic pos-hydrolysis of oligomers produced by corn cob autohydrolysis, World Journal of Microbiology and Biotechnology, 17, 817, 10.1023/A:1013563628882 Akpinar, 2009, Production of xylooligosaccharides by controlled acid hydrolysis of lignocellulosic materials, Carbohydrate Research, 344, 660, 10.1016/j.carres.2009.01.015 Glasser WG, Jain RK, Sjosted MA, inventors; The center for innovative technology. Thermoplastic pentose-rich polysaccharides from biomass. United States patent US 5,430,142. Jul. 4 1995. Lindblad, 2001, Biodegradable polymer from renewable sources. New hemicellulose-based hydrogels, Macromolecular Rapid Communications, 22, 962, 10.1002/1521-3927(20010801)22:12<962::AID-MARC962>3.0.CO;2-E Vila, 2008, Sustainable biocomposites based on autohydrolysis of lignocellulosic substrates, Composites Science and Technology, 68, 944, 10.1016/j.compscitech.2007.08.006 González, 2011, Manufacture of fibrous reinforcements for biodegradable biocomposites from Citysus scoparius, Journal of Chemical Technology & Biotechnology, 86, 575, 10.1002/jctb.2555 Garrote, 2004, Antioxidant activity of byproducts from the hydrolytic processing of selected lignocellulosic materials, Trends in Food Science & Technology, 15, 191, 10.1016/j.tifs.2003.09.016 Buranov, 2008, Lignin in straw of herbaceous crops, Industrial Crops and Products, 28, 237, 10.1016/j.indcrop.2008.03.008 Pandey, 2011, Lignin depolymerization and conversion: a review of thermal methods, Chemical Engineering & Technology, 34, 29, 10.1002/ceat.201000270 Fang, 2008, Reaction chemistry and phase behavior of lignin in high-temperature and supercritical water, Bioresource Technology, 99, 3424, 10.1016/j.biortech.2007.08.008 Zhang, 2008, Reaction kinetics of the hydrothermal treatment of lignin, Applied Biochemistry and Biotechnology, 147, 119, 10.1007/s12010-007-8070-6 Chi, 2009, Determination of furfural and hydroxymethylfurfural formed from biomass under acidic conditions, Journal of Wood Chemistry and Technology, 29, 265, 10.1080/02773810903096025 Schmidt, 2010, Electronic spectroscopy of lignins, 49 Esteves, 2008, Extractive composition and summative chemical analysis of thermally treated eucalypt wood, Holzforschung, 62, 344, 10.1515/HF.2008.057 Marchessault, 1982, Characterization of aspen exploded wood lignin, Canadian Journal of Chemistry, 60, 2372, 10.1139/v82-339 Conde, 2011, Production of antioxidants by non-isothermal autohydrolysis of lignocellulose wastes, LWT - Food Science and Technology, 44, 436, 10.1016/j.lwt.2010.08.006 Conde, 2008, Fractionation of antioxidants from autohydrolysis of barley husks, Journal of Agricultural and Food Chemistry, 56, 10651, 10.1021/jf801710a Garrote, 2004, Production of substituted oligosaccharides by hydrolytic processing of barley husks, Industrial & Engineering Chemistry Research, 43, 1608, 10.1021/ie0342762 Castro E, Conde E, Moure A, Falqué E, Cara C, Ruiz E, et al. Antioxidant Activity of liquors from steam explosion of Olea europea wood. Wood Science and Technology 42:579–592. Conde, 2009, Antioxidant activity of the phenolic compounds released by hydrothermal treatments of olive tree pruning, Food Chemistry, 114, 806, 10.1016/j.foodchem.2008.10.017 Tsubaki, 2010, Microwave-assisted extraction of phenolic compounds from tea residues under autohydrolytic conditions, Food Chemistry, 123, 1255, 10.1016/j.foodchem.2010.05.088 Conde, 2009, Fractionation of industrial solids containing barley husks in aqueous media, Food and Bioproducts Processing, 87, 208, 10.1016/j.fbp.2009.03.007 Pourali, 2010, Production of phenolic compounds from rice bran biomass under subcritical water conditions, Chemical Engineering Journal, 160, 259, 10.1016/j.cej.2010.02.057 Tripoli, 2005, The phenolic compounds of olive oil: structure, biological activity and beneficial effects on human health, Nutrition Research Reviews, 18, 98, 10.1079/NRR200495 Kim, 2007, Antimelanogenic and antioxidant properties of gallic acid, Biological & Pharmaceutical Bulletin, 30, 1052, 10.1248/bpb.30.1052 Jung, 2008, Anti-angiogenic, anti-inflammatory and anti-nociceptive activities of vanillyl alcohol, Archives of Pharmacal Research, 31, 1275, 10.1007/s12272-001-2106-1 Serzer, 2011, Lignin-derived oak phenolics: a theoretical examination of additional potential health benefits of red wine, Journal of Molecular Modeling, 17, 1841, 10.1007/s00894-010-0893-3 Tsubaki, 2008, Microwave heating of tea residue yields polysaccharides, polyphenols and plant biopolyester, Journal of Agricultural and Food Chemistry, 56, 11293, 10.1021/jf802253s Akpinar, 2010, Enzymatic Processing and antioxidant activity of agricultural waste autohydrolysis liquors, BioResources, 5, 699 Tsubaki, 2010, Microwave-assisted autohydrolysis of Prunus mume stone for extraction of polysaccharides and phenolic compounds, Journal of Food Science, 75, 152, 10.1111/j.1750-3841.2009.01466.x Li, 2008, Improved lignin properties and reactivity by modifications in the autohydrolysis process of aspen wood, Industrial Crops and Products, 27, 175, 10.1016/j.indcrop.2007.07.022 Hongzhang, 2007, Unpolluted fractionation of wheat straw by steam explosion and ethanol extraction, Bioresource Technology, 98, 666, 10.1016/j.biortech.2006.02.029 Anastasakis, 2011, Pyrolysis behaviour of the main carbohydrates of brown macro-algae, Fuel, 90, 598, 10.1016/j.fuel.2010.09.023 Aresta, 2005, Utilization of macro-algae for enhanced CO2 fixation and biofuels production: development of computing software for an LCA study, Fuel Processing Technology, 86, 1679, 10.1016/j.fuproc.2005.01.016 Ross, 2008, Classification of macroalgae as fuel and its thermochemical behaviour, Bioresource Technology, 99, 6494, 10.1016/j.biortech.2007.11.036 Anastasakis, 2011, Hydrothermal liquefaction of the brown macro-alga Laminaria Saccharina: effect of reaction conditions on product distribution and composition, Bioresource Technology, 102, 4876, 10.1016/j.biortech.2011.01.031 Iersel SV, Flammini A. Algae-base biofuels: applications and co-products. FAO. In: environmental and natural resources management working. Rome, Italy; 2010:117. John, 2011, Micro and macroalgal biomass: a renewable source for bioethanol, Bioresource Technology, 102, 186, 10.1016/j.biortech.2010.06.139 Matsui, 2010, Methane fermentation of a mixture of seaweed and milk at a pilot-scale plant, Journal of Bioscience and Bioengineering, 110, 558, 10.1016/j.jbiosc.2010.06.011 Horn, 2000, Ethanol production from seaweed extract, Journal of Industrial Microbiology and Biotechnology, 25, 249, 10.1038/sj.jim.7000065 Adams, 2009, Fermentation study on Saccharina latissima for bioethanol production considering variable pre-treatments, Journal of Applied Phycology, 21, 569, 10.1007/s10811-008-9384-7 Ji-Hyeon, 2011, Repeated-batch operation of surface-aerated fermentor for bioethanol production from the hydrolysate of seaweed sargassum sagamianum, Journal of Industrial Microbiology and Biotechnology, 21, 323, 10.4014/jmb.1010.10057 Lee, 2011, The isolation and characterization of simultaneous saccharification and fermentation microorganisms for Laminaria japonica utilization, Bioresource Technology, 102, 5962, 10.1016/j.biortech.2011.02.006 Wang, 2009, Combustion characteristics of seaweed biomass. 1. Combustion characteristics of Enteromorpha clathrata and Sargassum natans, Energ Fuels, 23, 5173, 10.1021/ef900414x Ross, 2009, Investigation of the pyrolysis behaviour of brown algae before and after pre-treatment using PY-GC/MS and TGA, Journal of Analytical and Applied Pyrolysis, 85, 3, 10.1016/j.jaap.2008.11.004 Aida, 2012, Production of organic acids from alginate in high temperature water, The Journal of Supercritical Fluids, 65, 39, 10.1016/j.supflu.2012.02.021 Schumacher, 2011, Hydrothermal conversion of seaweeds in a batch autoclave, The Journal of Supercritical Fluids, 58, 131, 10.1016/j.supflu.2011.04.009 Ross, 2010, Hydrothermal processing of microalgae using alkali and organic acids, Fuel, 89, 2234, 10.1016/j.fuel.2010.01.025 Zhou, 2010, Hydrothermal liquefaction of macroalgae Enteromorpha prolifera to bio-oil, Energy & Fuels, 24, 4054, 10.1021/ef100151h Biller, 2011, Potential yields and properties of oil from the hydrothermal liquefaction of microalgae with different biochemical content, Bioresource Technology, 102, 215, 10.1016/j.biortech.2010.06.028 Herrero, 2006, Sub- and supercritical fluid extraction of functional ingredients from different natural sources: plants, food-by-products, algae and microalgae. A review, Food Chemistry, 98, 136, 10.1016/j.foodchem.2005.05.058 Aresta, 2005, Production of biodiesel from macroalgae by supercritical CO2 extraction and thermochemical liquefaction, Environmental Chemistry Letters, 3, 136, 10.1007/s10311-005-0020-3 Kim, 2011, Ethanol production from marine algal hydrolysates using Escherichia coli KO11, Bioresource Technology, 102, 7466, 10.1016/j.biortech.2011.04.071 Srogi, 2006, Review: application of microwave techniques for environmental analytical chemistry, Analytical Letters, 39, 1261, 10.1080/00032710600666289 Rodriguez-Jasso, 2011, Microwave-assisted extraction of sulfated polysaccharides (fucoidan) from brown seaweed, Carbohydrate Polymers, 1137, 10.1016/j.carbpol.2011.06.006 Zvyagintseva, 2000, Inhibition of complement activation by water-soluble polysaccharides of some far-eastern brown seaweeds, Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 126, 209 Chen, 2005, Microwave-assisted extraction of polysaccharides from Solanum nigrum, Journal of Central South University of Technology, 12, 556, 10.1007/s11771-005-0122-x Navarro, 2005, Microwave-assisted alkaline modification of red seaweed galactans, Carbohydrate Polymers, 62, 187, 10.1016/j.carbpol.2005.07.009 Yang, 2008, Determination of physicochemical properties of sulphated fucans from sporophyll of Undaria pinnatifida using light scattering technique, Food Chemistry, 111, 503, 10.1016/j.foodchem.2008.03.085 Uy, 2005, Seaweed processing using industrial single-mode cavity microwave heating: a preliminary investigation, Carbohydrate Research, 340, 1357, 10.1016/j.carres.2005.02.008 González-López, 2012, Hydrothermal fractionation of Sargassum muticum biomass, Journal of Applied Phycology, 24, 1569, 10.1007/s10811-012-9817-1 Anastyuk, 2012, Structural similarities of fucoidans from brown algae Silvetia babingtonii and Fucus evanescens, determined by tandem MALDI-TOF mass spectrometry, Carbohydrate Research, 358, 78, 10.1016/j.carres.2012.06.015 Anastyuk, 2012, Anticancer activity in vitro of a fucoidan from the brown alga Fucus evanescens and its low-molecular fragments, structurally characterized by tandem mass-spectrometry, Carbohydrate Polymers, 87, 186, 10.1016/j.carbpol.2011.07.036 Rodríguez-Jasso RM, Mussato SI, Pastrana L, Aguilar CN, Teixeira JA Extraction of sulfated polysaccharides by autohydrolysis of brown seaweed Fucus vesiculosus. Journal of Applied Phycology (In press); doi:10.1007/s10811-012-9834-0. Dragone, 2010, Third generation biofuels from microalgae, 1355 Lardon, 2009, Life-cycle assessment of biodiesel production from microalgae, Environmental Science & Technology, 43, 6475, 10.1021/es900705j Patil, 2008, Towards Sustainable Production of Biofuels from Microalgae, International Journal of Molecular Sciences, 9, 1188, 10.3390/ijms9071188 Shuping, 2010, Production and characterization of bio-oil from hydrothermal liquefaction of microalgae Dunaliella tertiolecta cake, Energy, 35, 5406, 10.1016/j.energy.2010.07.013 Biller, 2011, Catalytic hydrothermal processing of microalgae: decomposition and upgrading of lipids, Bioresource Technology, 102, 4841, 10.1016/j.biortech.2010.12.113 Heilmann, 2010, Hydrothermal carbonization of microalgae, Biomass & Bioenergy, 34, 875, 10.1016/j.biombioe.2010.01.032 Dote, 1994, Recovery of liquid fuel from hydrocarbon-rich microalgae by thermochemical liquefaction, Fuel, 73, 1855, 10.1016/0016-2361(94)90211-9 Sawayama, 1995, CO2 fixation and oil production through microalga, Energy Conversion and Management, 36, 729, 10.1016/0196-8904(95)00108-P Banerjee, 2002, Botryococcus braunii: a renewable source of hydrocarbons and other chemicals, Critical Reviews in Biotechnology, 22, 245, 10.1080/07388550290789513 Minowa, 1995, Oil production from algal cells of Dunaliella tertiolecta by direct thermochemical liquefaction, Fuel, 74, 1735, 10.1016/0016-2361(95)80001-X Matsui, 1997, Liquefaction of micro-algae with iron catalyst, Fuel, 76, 1043, 10.1016/S0016-2361(97)00120-8 Yang, 2004, Analysis of energy conversion characteristics in liquefaction of algae, Resources, Conservation and Recycling, 43, 21, 10.1016/j.resconrec.2004.03.003 Brown, 2010, Hydrothermal Liquefaction and Gasification of Nannochloropsis sp, Energy & Fuels, 24, 3639, 10.1021/ef100203u Alba, 2011, Hydrothermal treatment (HTT) of microalgae: evaluation of the process as conversion method in an algae biorefinery concept, Energy & Fuels, 26, 642, 10.1021/ef201415s Duan, 2010, Hydrothermal liquefaction of a microalga with heterogeneous catalysts, Industrial & Engineering Chemistry Research, 50, 52, 10.1021/ie100758s Jena, 2011, Evaluation of microalgae cultivation using recovered aqueous co-product from thermochemical liquefaction of algal biomass, Bioresource Technology, 102, 3380, 10.1016/j.biortech.2010.09.111 Yeh, 2013, Savage PE Hydrothermal catalytic production of fuels and chemicals from aquatic biomass, Journal of Chemical Technology & Biotechnology, 88, 13, 10.1002/jctb.3933 Sawayama, 1999, Possibility of renewable energy production and CO2 mitigation by thermochemical liquefaction of microalgae, Biomass & Bioenergy, 17, 33, 10.1016/S0961-9534(99)00019-7 Shen, 2011, The production of acetic acid from microalgae under hydrothermal conditions, Applied Energy, 88, 3444, 10.1016/j.apenergy.2010.12.060