Research Topics
| Charles E WymanSummaryAffiliation: University of California Country: USA Publications
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Detail Information
Publications
Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of celluloseChaogang Liu
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
Bioresour Technol 96:1978-85. 2005..The partial flow approach could be further improved by optimizing the operating strategy and reaction conditions, suggesting that this novel pretreatment could lead to advanced biomass pretreatment technology...- What is (and is not) vital to advancing cellulosic ethanolCharles E Wyman
Chemical and Environmental Engineering Department, Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, CA 92506, USA
Trends Biotechnol 25:153-7. 2007.... 
Application of cellulase and hemicellulase to pure xylan, pure cellulose, and switchgrass solids from leading pretreatmentsJian Shi
Center for Environmental Research and Technology, Bourns College of Engineering, University of California at Riverside, 1084 Columbia Avenue, Riverside, CA 92507, USA
Bioresour Technol 102:11080-8. 2011....- Comparative data on effects of leading pretreatments and enzyme loadings and formulations on sugar yields from different switchgrass sourcesCharles E Wyman
Chemical and Environmental Engineering Department, University of California, Riverside, CA 92506, USA
Bioresour Technol 102:11052-62. 2011..Harvest time had more impact on performance than switchgrass variety, and microscopy showed changes in different features could impact performance by different pretreatments... - Changes in composition and sugar release across the annual rings of Populus wood and implications on recalcitranceJaclyn D DeMartini
Center for Environmental Research and Technology, Bourns College of Engineering, University of California Riverside, 1084 Columbia Avenue, Riverside, CA 92507, United States
Bioresour Technol 102:1352-8. 2011..Observed variations were then related to structural changes that occur across the radial direction of trees, providing an important step toward understanding the influence of these changes on recalcitrance... - Application of a reaction model to improve calculation of the sugar recovery standard for sugar analysisJiacheng Shen
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, 1084 Columbia Avenue, Riverside, California 92507, USA
Biotechnol Bioeng 109:300-5. 2012..Statistical analysis of errors and application of the F-test confirmed that application of the model reduced experimental errors in SRS(e). Reference SRS(e) values are reported for the three series of concentrations... - Sugar yields from dilute sulfuric acid and sulfur dioxide pretreatments and subsequent enzymatic hydrolysis of switchgrassJian Shi
Center for Environmental Research and Technology, University of California, Riverside, USA
Bioresour Technol 102:8930-8. 2011..For sulfur dioxide pretreatment, the highest total sugar yield of about 87% occurred at 5% SO₂ for 10 min and 180 °C. However, xylose yields were higher at shorter times and glucose yields at longer times... 
Lignin content in natural Populus variants affects sugar releaseMichael H Studer
University of California, Bourns College of Engineering, Center for Environmental Research and Technology, Riverside, CA 92507, USA
Proc Natl Acad Sci U S A 108:6300-5. 2011....- Hydrolysis of different chain length xylooliogmers by cellulase and hemicellulaseQing Qing
Center for Environmental Research and Technology, Chemical and Environmental Engineering Department, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, CA 92507, USA
Bioresour Technol 102:1359-66. 2011.... - Dilute acid and autohydrolysis pretreatmentBin Yang
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, CA, USA
Methods Mol Biol 581:103-14. 2009.... - The effect of bovine serum albumin on batch and continuous enzymatic cellulose hydrolysis mixed by stirring or shakingSimone Brethauer
Center for Environmental Research and Technology and Chemical and Environmental Engineering Department, University of California, 1084 Columbia Ave, Riverside, CA 92507, USA
Bioresour Technol 102:6295-8. 2011..Application of BSA to continuous hydrolysis for a mean residence time of 24h gave 33% and 40% higher glucose yields for corn stover and Avicel compared to the controls... - Comparison of microwaves to fluidized sand baths for heating tubular reactors for hydrothermal and dilute acid batch pretreatment of corn stoverJian Shi
University of California, Center for Environmental Research and Technology, Bourns College of Engineering, 1084 Columbia Avenue, Riverside, CA 92507, USA
Bioresour Technol 102:5952-61. 2011..Mechanisms were proposed to explain the differences in results for the two systems and provide new insights into pretreatment that can help advance this technology... - A novel mechanism and kinetic model to explain enhanced xylose yields from dilute sulfuric acid compared to hydrothermal pretreatment of corn stoverJiacheng Shen
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, 1084 Columbia Avenue, Riverside, CA 92507, USA
Bioresour Technol 102:9111-20. 2011.... - Engineering of a high-throughput screening system to identify cellulosic biomass, pretreatments, and enzyme formulations that enhance sugar releaseMichael H Studer
Chemical and Environmental Engineering Department, Center for Environmental Research and Technology, University of California Riverside, 92507, USA
Biotechnol Bioeng 105:231-8. 2010..Coupled pretreatment and enzymatic hydrolysis performance of the well plate pretreatment system is shown to be consistent among the many wells in the device and also with performance of conventional tubular reactors... - Characterization of the degree of polymerization of xylooligomers produced by flowthrough hydrolysis of pure xylan and corn stover with waterBin Yang
Center for Environmental Research and Technology CE CERT, Chemical and Environmental Engineering Department, Bourns College of Engineering, University of California, Riverside, CA 92507, United States
Bioresour Technol 99:5756-62. 2008..One explanation for these difference is that lignin and lignin-xylan compounds in particular play an important role in the hydrolysis of lignocellulosic biomass... - Comparative sugar recovery and fermentation data following pretreatment of poplar wood by leading technologiesCharles E Wyman
Chemical and Environmental Engineering Dept and Center for Environmental Research and Technology, University of California, Riverside, CA 92507, USA
Biotechnol Prog 25:333-9. 2009..An Agricultural and Industrial Advisory Board followed progress and helped steer the research to meet scientific and commercial needs... - Comparison of laboratory delignification methods, their selectivity, and impacts on physiochemical characteristics of cellulosic biomassRajeev Kumar
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, United States
Bioresour Technol 130:372-81. 2013..Cellulose characterizations revealed that PAA had less pronounced impacts on cellulose structure... - Co-hydrolysis of hydrothermal and dilute acid pretreated populus slurries to support development of a high-throughput pretreatment systemMichael H Studer
Department of Chemical and Environmental Engineering and Center for Environmental Research and Technology, Bourns College of Engineering, University of California Riverside, 1084 Columbia Avenue, Riverside, CA 92507, USA
Biotechnol Biofuels 4:19. 2011..abstract:.. - Application of high throughput pretreatment and co-hydrolysis system to thermochemical pretreatment. Part 1: dilute acidXiadi Gao
Department of Chemical and Environmental Engineering, Bourns College of Engineering, University of California, Riverside, California 92521, USA
Biotechnol Bioeng 110:754-62. 2013..In addition, the effects of pretreatment conditions and biomass types on susceptibility of pretreated substrates to enzymatic conversion were clearly discernible, demonstrating the method to be a useful extension of HTPH systems... - Xylooligomers are strong inhibitors of cellulose hydrolysis by enzymesQing Qing
Center for Environmental Research and Technology and, Chemical and Environmental Engineering Department, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, United States
Bioresour Technol 101:9624-30. 2010..A comparison among glucose sugars and xylose sugars also showed that xylooligomers were more powerful inhibitors than well-established glucose and cellobiose... - Review: Continuous hydrolysis and fermentation for cellulosic ethanol productionSimone Brethauer
Center for Environmental Research and Technology and Chemical and Environmental Engineering Department, University of California, Riverside, CA 92507, USA
Bioresour Technol 101:4862-74. 2010..If sugar generation rates can be increased, the high cell densities in a continuous system could enable higher productivities and yields than in batch fermentations... - Impact of surfactants on pretreatment of corn stoverQing Qing
Center for Environmental Research and Technology, Chemical and Environmental Engineering Department, Bourns College of Engineering, University of California, 1084 Columbia Avenue, Riverside, CA 92507, USA
Bioresour Technol 101:5941-51. 2010..Surfactant pretreatment was found to improve lignin solubility, which could improve cellulose digestibility by reducing unproductive binding to enzyme, and also appeared to enhance performance by modifying the biomass surface... - Carbohydrate derived-pseudo-lignin can retard cellulose biological conversionRajeev Kumar
Center for Environmental Research and Technology, Bourns College of Engineering, Riverside, California 92507, USA
Biotechnol Bioeng 110:737-53. 2013..The drop in cellulose conversion was higher than realized for cellulase inhibition by xylooligomers reported previously. Plausible mechanisms are discussed to explain the observed reductions in cellulose conversions... - Sugar yields from dilute oxalic acid pretreatment of maple wood compared to those with other dilute acids and hot waterTaiying Zhang
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, United States
Carbohydr Polym 92:334-44. 2013.... - Rapid selection and identification of Miscanthus genotypes with enhanced glucan and xylan yields from hydrothermal pretreatment followed by enzymatic hydrolysisTaiying Zhang
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, 1084 Columbia Avenue, Riverside, CA, 92507, USA
Biotechnol Biofuels 5:56. 2012..abstract:.. - Composition and hydrothermal pretreatment and enzymatic saccharification performance of grasses and legumes from a mixed-species prairieJaclyn D DeMartini
Chemical and Environmental Engineering Department, University of California, Riverside, Riverside, CA 92507, USA
Biotechnol Biofuels 4:52. 2011..abstract:.. - Supplementation with xylanase and β-xylosidase to reduce xylo-oligomer and xylan inhibition of enzymatic hydrolysis of cellulose and pretreated corn stoverQing Qing
Center for Environmental Research and Technology, Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, California 92507, USA
Biotechnol Biofuels 4:18. 2011..abstract:.. - Small-scale and automatable high-throughput compositional analysis of biomassJaclyn D DeMartini
Center for Environmental Research and Technology, University of California Riverside, 92507, USA
Biotechnol Bioeng 108:306-12. 2011..These results demonstrate the validity of the downscaled procedure for measuring biomass composition to enable the calculation of sugar yields and determination of trends in sugar release behavior in HTPH screening studies... - Comparative sugar recovery data from laboratory scale application of leading pretreatment technologies to corn stoverCharles E Wyman
Dartmouth College, Hanover, NH 03755, USA
Bioresour Technol 96:2026-32. 2005..However, the substantial differences in sugar release patterns in the pretreatment and enzymatic hydrolysis operations have important implications for the choice of process, enzymes, and fermentative organisms... - Characterization of molecular weight distribution of oligomers from autocatalyzed batch hydrolysis of xylanXia Li
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
Appl Biochem Biotechnol 105:515-22. 2003.... - Application of a depolymerization model for predicting thermochemical hydrolysis of hemicelluloseTodd Lloyd
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
Appl Biochem Biotechnol 105:53-67. 2003..These differences need to be resolved by gathering additional data and improving the model... - Potential synergies and challenges in refining cellulosic biomass to fuels, chemicals, and powerCharles E Wyman
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, New Hampshire 03755, USA
Biotechnol Prog 19:254-62. 2003..However, manufacture of multiple products introduces additional technical, marketing, risk, scale-up, and other challenges that must be considered in refining of lignocellulosics... - Effect of xylan and lignin removal by batch and flowthrough pretreatment on the enzymatic digestibility of corn stover celluloseBin Yang
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, New Hampshire 03755, USA
Biotechnol Bioeng 86:88-95. 2004..Cellulose digestibility for flowthrough reactors was related to lignin removal as well. These results suggest that altering lignin also affects the enzymatic digestibility of corn stover... - Coordinated development of leading biomass pretreatment technologiesCharles E Wyman
Dartmouth College, Hanover, NH 03755, United States
Bioresour Technol 96:1959-66. 2005..This paper introduces the project and summarizes the shared methods for papers reporting results of this research in this special edition of Bioresource Technology... - Initial evaluation of simple mass transfer models to describe hemicellulose hydrolysis in corn stoverMichael A Brennan
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
Appl Biochem Biotechnol 113:965-76. 2004.... - BSA treatment to enhance enzymatic hydrolysis of cellulose in lignin containing substratesBin Yang
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, New Hampshire 03755, USA
Biotechnol Bioeng 94:611-7. 2006..The results are consistent with non-specific competitive, irreversible adsorption of BSA on lignin and identify promising strategies to reduce enzyme requirements for cellulose hydrolysis... - Combined sugar yields for dilute sulfuric acid pretreatment of corn stover followed by enzymatic hydrolysis of the remaining solidsTodd A Lloyd
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, United States
Bioresour Technol 96:1967-77. 2005..These results also suggest that enhanced hemicellulase activity could further improve xylose yields, particularly for low cellulase loadings... - The enhancement of xylose monomer and xylotriose degradation by inorganic salts in aqueous solutions at 180 degrees CChaogang Liu
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
Carbohydr Res 341:2550-6. 2006..The unidentified compounds could be formed through aqueous furfural resinification and condensation reactions that are accelerated by FeCl3, but the actual mechanisms are still not clear... - Cellulase production on bagasse pretreated with hot waterMary Bigelow
BC International and Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
Appl Biochem Biotechnol 98:921-34. 2002.... - The impact of dilute sulfuric acid on the selectivity of xylooligomer depolymerization to monomersRajeev Kumar
Thayer School of Engineering, Dartmouth College, NH 03755, USA
Carbohydr Res 343:290-300. 2008..This study also revealed that the source of water and the material used for the construction of the reactor impacted xylose degradation kinetics... - Predicted effects of mineral neutralization and bisulfate formation on hydrogen ion concentration for dilute sulfuric acid pretreatmentTodd A Lloyd
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
Appl Biochem Biotechnol 113:1013-22. 2004..Coupled with the effect of temperature on acid dissociation, these effects increase acid requirements to achieve a particular reaction rate unless minerals are removed prior to hydrolysis... - Changes in the enzymatic hydrolysis rate of Avicel cellulose with conversionBin Yang
Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
Biotechnol Bioeng 94:1122-8. 2006.... - How biotech can transform biofuelsLee R Lynd
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, New Hampshire 03755, USA
Nat Biotechnol 26:169-72. 2008..For cellulosic ethanol to become a reality, biotechnological solutions should focus on optimizing the conversion of biomass to sugars... - Estimation of temperature transients for biomass pretreatment in tubular batch reactors and impact on xylan hydrolysis kineticsSuzanne L Stuhler
Thayer School of Engineering, Dartmouth College, 8000 Cummings Hall, Hanover, NH 03755, USA
Appl Biochem Biotechnol 105:101-14. 2003..These results were then used to project the relationship between deviations in yield from isothermal results and the tube radius and reaction time... - Impact of fluid velocity on hot water only pretreatment of corn stover in a flowthrough reactorChaogang Liu
Thayer School of Engineering, Dartmouth College, 800 Cummings Street, Hanover, NH 03755, USA
Appl Biochem Biotechnol 113:977-87. 2004.... - Sugar monomer and oligomer solubility: data and predictions for application to biomass hydrolysisMatthew C Gray
Thayer School of Engineering, Dartmouth College, 800 Cumming Road, Hanover, NH 03755, USA
Appl Biochem Biotechnol 105:179-93. 2003.... - Biotechnology for fuels and chemicals--past, present, and futureCharles D Scott
Oak Ridge National Laboratory, Oak Ridge, TN, USA
Appl Biochem Biotechnol 113:761-3. 2004