Charles G Hill

John T. and Magdalen L. Sobota Professor Emeritus

1004 Engineering Hall
1415 Engineering Drive
Madison, WI 53706

Ph: (608) 263-4593
hill@engr.wisc.edu


Profile Summary

The graduate students who work with me are concerned primarily with fundamental problems in the areas of immobilized enzyme technology, photocatalysis, permselective ceramic membranes and composite wood products, or with applying chemical engineering principles in innovative solutions to problems of the dairy and wood products industries. Our various projects employ a variety of modern physical and chemical instrumental techniques to characterize the systems of interest.

Students who are working jointly with Professor Marc Anderson (Water Chemistry) and me are concerned with both fundamental studies of the use of "sol-gel" technology to fabricate ceramic membranes and the practical applications of these membranes. Our perm-selective membranes have significant potential for use in harsh environments in which the lifetimes of conventional polymeric membranes would be too short to make their use practical. Our photocatalytic ceramic membrane technology is evolving rapidly and has important implications with respect to remediation of environmental problems.

Another applied component of our research program has involved using membrane processes (e.g., ultrafiltration, reverse osmosis and electrodialysis) and immobilized enzyme reactors to develop new technology for applications of interest to the dairy industry. Current studies focus on the use of immobilized lipases to both effect changes in the composition of milkfat and to generate products for flavoring a wide variety of processed foods.

A related research thrust involves modification of naturally occurring fats and oils to produce nutraceuticals [foods which confer both nutritional and therapeutic or preventative medicinal values].

Education

  • S.B., S.M., Sc.D., Massachusetts Institute of Technology

Research Interests

  • immobilized enzyme technology
  • kinetics and catalysis
  • membrane separations
  • photocatalysis
  • wood adhesives
  • new bleaching technology

Awards, Honors and Societies

  • Thirteen Polygon Outstanding Instructor Awards
  • Outstanding teaching awards: Amoco (1979), Tau Beta Pi (1983), Benjamin Smith Reynolds (1983), and AIChE student chapter (1996, 1997, 2000)
  • Merck, Sharp & Dohme Lectures (1993)
  • AIChE Fellow (1993)
  • University of Wisconsin Teaching Academy (1994)
  • John and Magdalen Sobota Professor of Chemical Engineering (1995)
  • USDA Group Honor Award for Excellence (1996)
  • Visitante Distinguido Award from the Heroica Ciudad de Veracruz, Mexico (1997)
  • Fulbright Senior Scholar (Spain) (2000)

Publications

  • “Lipase – Catalyzed Acidolysis of Butter Oil with Conjugated Linoleic Acid:  A Kinetic Study Involving Multiple Reuse of the Immobilized Enzyme,” by C. F. Torres and C. G. Hill, Jr., Industrial and Engineering Chemistry Research, 43, 3714-3722 (2004).
  • \"Lipase Mediated Transesterification of Menhaden Oil with the Ethyl Ester of Conjugated Linoleic Acid: Multi-Response Kinetics,\" by C. F. Torres, B. Lin, L. Lessard, and C. G. Hill, Jr., Biochemical Engineering Journal, 23(2) 107-116 (2005).
  • “Immobilized Enzyme Technology,” by C. G. Hill, Jr., C. Otero, and H. S. Garcia,  Encyclopedia of Chemical Processing, Marcel Dekker, Inc., 1367-1380 (2005).
  • “Lipase Catalyzed Transesterification of Médium-Chain Triacylglycerols and a Fully Hydrogenated Soybean Oil,” by A. Lopez - Hernandez, H. S. Garcia, and C. G. Hill, Jr., Journal of Food Science, 70, C365-372 (2005).
  • “Selectivity Aspects of Lipolysis of Milkfat (Butteroil) by Immobilized Pregastric Esterases from Kid Goats and Lambs,” by C. G. Hill, Jr., S. Ghannouchi, A.Lopez-Hernandez, and H. S. Garcia. Journal of Food Science, 71, E68-79 (2006)
  • “Continuous Enzymatic Transesterification of Sesame Oil and a Fully Hydrogenated Fat: Effects of Reaction Conditions on Product Characteristics,” by C. Otero, A. Lopez - Hernandez, H.S. Garcia, E. Hernandez - Martin, and C.G. Hill Jr. Biotechnology and Bioengineering, 94 (5) 877-887 ((2006).
  • “Lipase-Catalyzed Acidolysis of Menhaden Oil with Pinolenic Acid,” by I.-H. Kim, and C. G. Hill, Jr. Journal of the American Oil Chemists’ Society, 83, 109-115 (2006).
  • “Phospholipase A1-catalyzed Synthesis of Phospholipids Enriched in n-3 Polyunsaturated Fatty Acid Residues,” by I.-H. Kim, H. S. Garcia, and C. G. Hill, Jr. Enzyme and Microbial Technology, 40, 1130-35 (2007).
  • “Enrichment of Lecithin with n-3 Fatty Acids by Acidolysis Using Immobilized Phospholipase A1,” by Hugo S. Garcia, In-Hwan Kim, Cristina Otero, Arnoldo Lopez-Hernandez, and Charles G. Hill, Jr. Grasas y Aceites, 59 (4), 368-374 (2008).
  • “Selective Synthesis of Diacylglycerols of Conjugated Linoleic Acid,” by Estela Hernández-Martín, Charles G. Hill, Jr., and Cristina Otero. Journal of the American Oil Chemists\' Society, 86, 427-435 (2009).
  • “Bioconversion of Linoleic Acid to Conjugated Linoleic Acid by Lactobacillus Reuteri under Different Growth Conditions,”  by A. Hernandez-Mendoza, A. Lopez-Hernandez, C. G. Hill Jr., and H. S. Garcia. Journal of Chemical Technology and Biotechnology, 84, 180-185 (2009).
  • “Lipases in Foods: Biotechnology Applications,” by Hugo S. Garcia and Charles G. Hill, Jr.” Invited contribution published in the Encyclopedia of Biotechnology in Agriculture and Food, edited by D. R. Heldman, A. Bridges, D. Hoover, and M. B. Wheeler, pp. 370-374. Taylor and Francis, New York (2009).
  • “Synthesis of structured phosphatidylcholine containing n-3 PUFA residues via acidolysis mediated by immobilized phospholipase A1,” by In-Hwan Kim, Hugo S. Garcia, and Charles G. Hill, Jr. Journal of the American Oil Chemists\' Society, 87, 1293-1299 (2010).
  • “Applications of Enzymes in Dairy Technology,” by Hugo S. Garcia, Arnoldo Lopez-Hernandez, and Charles G. Hill, Jr. Invited contribution published in Comprehensive Biotechnology, 2nd Edition, Vol. 4, 567-574 (2011).

Profile Summary

The graduate students who work with me are concerned primarily with fundamental problems in the areas of immobilized enzyme technology, photocatalysis, permselective ceramic membranes and composite wood products, or with applying chemical engineering principles in innovative solutions to problems of the dairy and wood products industries. Our various projects employ a variety of modern physical and chemical instrumental techniques to characterize the systems of interest.

Students who are working jointly with Professor Marc Anderson (Water Chemistry) and me are concerned with both fundamental studies of the use of "sol-gel" technology to fabricate ceramic membranes and the practical applications of these membranes. Our perm-selective membranes have significant potential for use in harsh environments in which the lifetimes of conventional polymeric membranes would be too short to make their use practical. Our photocatalytic ceramic membrane technology is evolving rapidly and has important implications with respect to remediation of environmental problems.

Another applied component of our research program has involved using membrane processes (e.g., ultrafiltration, reverse osmosis and electrodialysis) and immobilized enzyme reactors to develop new technology for applications of interest to the dairy industry. Current studies focus on the use of immobilized lipases to both effect changes in the composition of milkfat and to generate products for flavoring a wide variety of processed foods.

A related research thrust involves modification of naturally occurring fats and oils to produce nutraceuticals [foods which confer both nutritional and therapeutic or preventative medicinal values].


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