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Renewables > Bioenergy
Efficient Biomass Conversion: Delineating the Best Lignin Monomer-Substitutes


Start Date: December 2008

Investigators

John Ralph, Xuejun Pan, and Sara Patterson, University of Wisconsin, Madison

Annual Reports
Publications

Presentations

  • Zhu, Y., Y. Tobimatsu, H. Kim, C. Davidson, J. H. Grabber and J. Ralph. Identifying new lignin bioengineering targets: Hydrophilic monolignol surrogates. 243rd National Meeting of American Chemical Society, San Diego, CA, 2012
  • Tobimatsu, Y., J. H. Grabber, P. Mitra, A. Wagner, L. Donaldson, C. L. Davidson, D. Loque and J. Ralph. Fluorescence-tagged monolignols: New approaches to the study of cell wall lignification. 243rd National Meeting of American Chemical Society, San Diego, CA, 2012.
  • Elumalai, S., J. Grabber, J. Ralph, and X. Pan. "Evaluating the Response of Artificially Lignified Maize Cell Wall to Pretreatments and Enzymatic Hydrolysis," Proceedings of the 16th International Symposium on Wood, Fiber and Pulping Chemistry, Paper # 535, Tianjin, China, June 8-10, 2011.
  • Zhu, Y., Y. Tobimatsu, J. H. Grabber, and J. Ralph. "Potential Monolignol Replacements: Synthesis and Lignication of ß-Hydroxycinnamoyl Glucosides and Monolignol -Glucosides," Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Tobimatsu, Y., Y. Zhu, H. Kim, F. Lu, J. H. Grabber, and J. Ralph. "Potential Monolignol Replacements: Lignication with Guaiacyl Butenol, Feruloyl Methoxytyramine, and Rosmarinic Acid," Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Ress, D. K., J. N. Rehbeck, W. Maier, H. Kim, F. Lu, J. Ralph, C. Davidson and J. H. Grabber. "Potential Monolignol Replacements: Synthetic Strategies Toward Phenolic and Diferulate Esters of Avan-3-ols, Tartaric Acid and Glucose." Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Ralph, J., X. Pan, S. Patterson, F. Lu, H. Kim, Y. Zhu, D. K. Ress, M. Opietnik, Y. Tobimatsu, T. Fabel, S. Elumali, C. Davidson, and J. H. Grabber. "Altering Lignin Biosynthesis for Improved Biomass Conversion [Efficient Biomass Conversion: Delineating the Best Lignin Monomer [substitutes]", Global Climate and Energy Project Working Group Meeting, Stanford, California, 2010.
  • Opietnik, M., P. F. Schatz, H. Kim, C. Davidson, J. H. Grabber, and J. Ralph. "Potential Monolignol Replacements: Synthesis of Feruloyl Quinic Acids and Feruloyl Threitols." Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Grabber, J. H., J. Ralph, D. K. Ress, and X. Pan. "Incorporation of Epicatechin Esters into Lignin Enhances Cell Wall Fermentability." 32nd Symposium on Biotechnology for Fuels and Chemicals, Hilton Clearwater Beach, Clearwater, Florida, Paper #15139, 2010.
  • Grabber, J. H., J. Ralph, and X. Pan. "Identifying New Lignin Bioengineering Targets: Monolignol Substitute Impacts on Lignin Formation and Cell Wall Utilization," 32nd Symposium on Biotechnology for Fuels and Chemicals, Hilton Clearwater Beach, Clearwater, Florida, Paper #15069, 2010.
  • Elumalai, S., J. H. Grabber, J. Ralph, and X. Pan. "Microscale Analysis and Pretreatment Methods for Evaluating the Delignication Response of Articially Lignied Cell Walls Containing Novel Monolignols," Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Bolivar, J., T. Fabel, S. Patterson, J. H. Grabber, and J. Ralph. "In Vitro Culture Systems to Test Lignication and Cell Wall Digestibility," Global Climate and Energy Project Annual Symposium, Stanford, California, 2010.
  • Ralph, J., H. Kim, F. Lu, D. K. Ress, Y. Tobimatsu, X. Pan, S. Patterson and J. H. Grabber. Efficient Biomass Conversion: Delineating the Best Monolignol Substitutes (introductory overview). Global Climate and Energy Project, Stanford University, California, 2010.
  • Grabber, J. H., J. Ralph, D. K. Ress and X. Pan. "Incorporation of Epicatechin Esters into Lignin Enhances Cell Wall Fermentability," Paper #15139, 32nd Symposium on Biotechnology for Fuels and Chemicals, Hilton Clearwater Beach, Clearwater, Florida, 2010.
  • Ress, D. K., Y. Tobimatsu, H. Kim, F. Lu, J. Ralph, C. Davidson and J. H. Grabber. "Development of a Systems Based Lignification Archetype Using Unconventional Lignin Monomer Substitutes," Global Climate & Energy Project, Stanford University, CA, 2009.
  • Ralph, J., H. Kim, F. Lu, D. K. Ress, Y. Tobimatsu, X. Pan, S. Patterson, and J. H. Grabber. "Efficient Biomass Conversion: Delineating the Best Monolignol Substitutes (introductory overview)," Global Climate & Energy Project, Stanford University, CA, 2009.
  • Ralph,J., J. H. Grabber, F. Lu, H. Kim, J. M. Marita, and R. D. Hatfield. "Incorporation of Monolignol Conjugates into Lignin for Improved Processing," IUFRO Tree Biotechnology Conference, Whistler, BC, Canada, 2009.
  • Ralph, J. "Modification of Cell Wall Structure to Improve Biomass Processing ." Scion Seminar Series, Scion, Rotorua, New Zealand, 2009.
  • Ralph, J., J. H. Grabber, F. Lu, H. Kim, J. M. Marita, and R. D. Hatfield. "Designing Lignins for Improved Biomass Processing." Global Climate and Energy Change (GCEP) Research Symposium, Frances C. Arrillaga Alumni Center, Stanford University, Stanford, CA, October 1-3, 2008.
  • Ralph, J., R. D. Hatfield, J. H. Grabber, F. Lu, H. Kim, and J. M. Marita. "Designing Lignins for Improved Biomass Processing." FuncFiber International Symposium on the Biology and Biotechnology of Wood, p 14. Umeå, Sweden, March 10-12, 2008, 2008.
  • Ralph, J. "A Basis for Overcoming the 'Lignin Problem' in Biomass Conversion." Contemporary Biochemistry, Biofuels Seminar Series, Ebling Symposium Center, Microbial Sciences Building, U. Wisconsin-Madison, 2008.
  • Yang, F., Mitra, P., Zheng, K., Sun, L., Tobimatsu, Y., Smith, M., Kim, J. S., Eudes, A., Varanasi, P., Benke, P. I., Mukhopadhyay, A., Singh, S., Ralph, J., Simmons, B. A., Keasling, J. D., and Loque, D. (2012) identification and characterization of transporter mediating monolignol export in Arabidopsis. In. Plant Biology 2012, American Society of Plant Biologists, Austin, TX.
  • Tobimatsu, Y., Wagner, A., Donaldson, L., Mitra, P., Loque, D., Dima, O., Niculaes, C., Boerjan, W., Grabber, J. H., and Ralph, J. (2012) Fluorescence-tagged monolignols for delineating plant cell wall lignification: design, synthesis, and preliminary applications. In. Plant Biology 2012, American Society of Plant Biologists, Austin, TX.
  • Tobimatsu, Y., Wagner, A., Donaldson, L., Mitra, P., Loque, D., Dima, O., Niculaes, C., Boerjan, W., Grabber, J. H., and Ralph, J. (2012) Fluorescence-tagged monolignols for delineating plant cell wall lignification: design, synthesis, and preliminary applications. In. 2012 Gordon Conference on Plant Cell Walls, GRC, Colby College, Waterville, ME.
  • Tobimatsu, Y., Wagner, A., Donaldson, L., Mitra, P., Loque, D., Dima, O., Niculaes, C., Boerjan, W., Kim, J.-I., Anderson, N. A., Chapple, C., Zhao, J., Dixon, R. A., Bolivar, J., Fabel, T., Patterson, S., Grabber, J. H., and Ralph, J. (2012) Fluorescence-tagged monolignols for delineating plant cell wall lignification. In. 2012 GLBRC Science Retreat, Naperville, IL.
  • Rencoret, J., and Ralph, J. (2012) Altering plant lignins for improved biomass processing. In. International Symposium on “Paradigms for the Pulp and Paper Industry in the XXI Century: Opportunities for a Sustainable Future”, Seville, Spain.
  • Ralph, J. (2012) 'New' genes from novel plants for altering lignification. In. INRA-Versailles Plant Seminar Series, INRA-Versailles, Paris, France.
  • Ralph, J. (2012) 'New' genes from novel plants for altering lignification. In. INRA-Reims Plant Chemistry Seminar Series, INRA-Reims, Reims, France
  • Efficient Biomass Conversion: Delineating the Best Lignin-Monomer-Substitutes. In. GCEP Distinguished Lecturer Series, DuPont, Wilmington, DE
  • Ralph, J. (2012) Efficient Biomass Conversion: Delineating the Best Lignin-Monomer-Substitutes. In. GCEP Distinguished Lecturer Series, ExxonMobil, Clinton, NJ
  • Ralph, J. (2012) Efficient Biomass Conversion: Delineating the Best Lignin-Monomer-Substitutes. In. GCEP Distinguished Lecturer Series, General Electric Company, Niskayuna, NY
  • Ralph, J. (2012) 'New' genes from novel plants for altering lignification. In. 2012 Gordon Conference on Plant Cell Walls, GRC, Colby College, Waterville, ME
  • Ralph, J. (2012) State of the art on wood and grass lignin structure. In. V Seminar on Pulp and Paper. Lignin Biorefinery: from biomass to product, Federal University of Viçosa, Viçosa, MG Brazil
  • Grabber, J. H., Tobimatsu, Y., Elumalai, S., Pan, X., and Ralph, J. (2012) Biomimetic cell wall model studies to identify new lignin bioengineering targets for improving biomass susceptibility to pretreatment and enzymatic saccharification. In. ASA, CSSA, and SSSA International Annual Meetings, Cincinnati, OH.
  • Grabber, J. H., Tobimatsu, Y., Elumalai, S., Pan, X., and Ralph, J. (2012) Epigallocatechin gallate incorporation into lignin enhances the inherent fermentability, alkaline degradability, and enzymatic saccharifiability of artificially lignified maize cell walls. In. ASA, CSSA, and SSSA International Annual Meetings, Cincinnati, OH
  • Bonawitz, N. D., Li, X., Tobimatsu, Y., and Chapple, C. (2012) The transcriptional coregulatory complex Mediator is required for the dwarf phenotype of a lignin-deficient Arabidopsis mutant. In. 3rd Banff Conference on Plant Metabolism, U. Calgary, The Banff Center, Banff, Alberta, Canada
  • Azarpira, A., Lu, F., Boerjan, W., Mansfield, S. D., Garlock, R., Dale, B. E., Ralph, J., Hedenström, M., and Tobimatsu, Y. (2012) Lignin (and extractable materials) from AFEX-treated wild type vs. transgenic poplars. In. 243rd International Meeting of American Chemical Society, San Diego, CA
  • Zhu, .Y., Y. Tobimatsu, S. Elumalai, H. Kim, C. Davidson, X. Pan, J. H. Grabber and J. Ralph. Potential monolignol replacements: Lignification with 4-hydroxycinnamoyl amides. 7th Annual Global Climate and Energy Project (GCEP) Research Symposium, Stanford, CA, 2011.
  • Tobimatsu, Y., S. Elumalai, J. H. Grabber, C. Davidson, X. Pan and J. Ralph. Hydroxycinnamate conjugates as potential monolignol replacements: in vitro lignification and cell wall studies with rosmarinic acid. 7th Annual Global Climate and Energy Project (GCEP) Research Symposium, Stanford, CA, 2011.
  • Ralph, J., F. Lu, Y. Tobimatsu, Y. Zhu, D. K. Ress, J. Rencoret, H. Kim, C. G. Wilkerson, S. Withers, S. D. Mansfield, J.-Y. Park, J. C. Sedbrook, R. A. Dixon, F. Chen, W. Boerjan, A. Wagner, C. Chapple, J.-K. Weng, J. H. Grabber, X. Pan, S. Elumalai, R. D. Hatfield and C. Davidson. Introducing novel linkages into lignin. Lignin: Characterization, Extraction, and Adding Value: EBI and JBEI Joint Workshop, JBEI, Emeryville, CA, 2011.
  • Ralph, J., F. Lu, H. Kim, Y. Zhu, J. Rencoret Pazo, Y. Tobimatsu, J. H. Grabber, R. D. Hatfield, J. C. Sedbrook, S. D. Mansfield, C. G. Wilkerson and W. Boerjan. Progress in Altering Plant Cell Wall Biosynthesis for Improved Biomass Processing. UBC Botany Seminar, UBC, Vancouver, Canada, 2011.
  • Ralph, J., F. Lu, H. Kim, Y. Zhu, J. Rencoret Pazo, Y. Tobimatsu, J. H. Grabber, R. D. Hatfield, J. C. Sedbrook, W. Boerjan, S. D. Mansfield and C. G. Wilkerson. Progress in Altering Plant Cell Wall Biosynthesis for Improved Biomass Processing. Novozymes Seminar, Novozymes, Raleigh, NC, 2011.
  • Ralph, J., F. Lu, H. Kim, Y. Zhu, J. Rencoret Pazo, J. H. Grabber, R. D. Hatfield, N. Santoro, C. Foster, R. Garlock, S. Chundawat, L. Sousa, V. Balan, B. E. Dale, W. Boerjan, J. C. Sedbrook, S. D. Mansfield and C. G. Wilkerson. Progress in Altering Plant Cell Wall Biosynthesis for Improved Biomass Processing. JBEI post SAC Seminar, JBEI, Emeryville, CA, 2011.
  • Mitra, P., F. Yang, J. S. Kim, J. Ito, H. Joshi, Y. Tobimatsu, A. Eudes, P. I. Benke, A. Mukhopadhyay, J. D. Keasling, J. Ralph, J. Heazelwood and L. Dominique. Biosynthesis of rosmarinic acid in Arabidopsis stems to engineer cleavable lignin. International Synthetic Biology Workshop: A Bio-based Future, Berkeley, CA, 2011.
  • Ralph, J. The future for liquid biofuels from woody biomass and other cellulosic matter. EECA Biofuels and Electric Vehicles Conference 2009, Te Papa, Wellington, New Zealand, 2009.
  • Ralph. J., A basis for Overcoming the ‘lignin problem’ in biomass conversion. Stanford University, 2009.
Updated August 2019
 

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