Dewey D. Ryu

Dewey Ryu

Position Title
Professor Emeritus

Department of Chemical Engineering, College of Engineering

125 Everson Hall

Profile Introduction

For more details, please refer to Professor Ryu's web pages.

Research Interests

For more details, please refer to Professor Ryu's web pages.

Grad Group Affiliations

  • Chemical Engineering, Biomedical Engineering, Food Science
  • Microbiology


  • MCB 263 Fundamentals of Biotechnology, Winter
  • See also


  • 125, 126, and 134 Everson Hall
    • Although it varies, we usually have 2 postdoctoral research scientists, about 6 graduate student, and about 4 undergraduate students.

Field Sites

  • For the purpose of research collaboration, students sometimes work on sites other than Professor Ryu's laboratory on campus. These include UCDMC, Shreiner's Hospital, and other labs on campus.

Honors and Awards


    Professional Societies



    • 1961 BS Chemical Engineering Massachusetts Institute of Technology
    • 1967 PhD Biochemical Engineering Massachusetts Institute of Technology


    Park, Chan B., Dewey D. Y. Ryu, Sun Bok Lee, 2003. Inhibitory effect of L-pyroglutamate on extremophiles: correlation with growth temperature and pH. Federation of European Microbiological Societies, Microbiology Letters. 221, 187 - 190. Sohn, Young-sun, D. H. Nam, Dewey D. Y. Ryu. 2001. Biosynthetic pathway of Cephabacins in Lysobacter lactamgenus: Molecular and biochemical characterization of the upstream region of the gene clusters for engineering of novel antibiotics. Metabolic Engineering. 3, 380-392. Park, Chan B., Sun Bok Lee, Dewey D. Y. Ryu, 2001. L-Pyroglutamate spontaneously formed from L-glutamate inhibits growth of the hyperthermophilic archaeon Sulfolobus solfataricus. Applied and Environmental Microbiology. 67, 3650-3654. Yang, J., H. A. Kang, S. M. Ko, S. K. Chae, Dewey D. Y. Ryu, Jeong-Yoon Kim, 2001. Cloning of the Aspergillus niger pmrA gene, a homologue of yeast PMR1, and characterization of a pmrA null mutant. Federation of European Microbiological Societies, Microbiology Letters. 199, 97-102. Nam, D. H., Y. W. Ryu, and Dewey D. Y. Ryu, 2001. pH controlled synthesis of cephalexin by a purified Acetobactor turbidans ampicillin acylase. J. Microbiol. and Biotechnol. 11, 329 - 332. Li, T., Henry Yeh, Ji-Hyeon Kim, Dewey D. Y. Ryu, 2001. Performance of Batch Membrane Reactor: Glycerol 3-Phosphate Synthesis Coupled with ATP Regeneration. Biotechnology and Bioengineering. 74, 327-334. Nam, D. H., S. K. Lim, M. H. Chung, E. S. Lee, Y. S. Sohn, and Dewey D. Y. Ryu, 2001. Membrane transporter genes in cephabacin biosynthetic gene cluster of Lysobacter Lactamgenus. J. Microbiol. Biotechnol. 11, 153 -159. Kim, J. W., T. J. Park, Dewey D. Y. Ryu, and Jeong-Yoon Kim, 2000. High cell density culture of Yarrowia lipolytica using a one-step feeding process. Biotechnology Progress. 16, 657-660. Kim, J. Y. and Dewey D. Y. Ryu. 1999. Physiological and environmental effects on metabolic flux change caused by heterologous gene expression in Escherichia coli. Biotechnol. Bioprocess Eng. 4, 170-175. Ryu, Dewey D. Y. and D. H. Nam, 2000. Recent Progress in Biomolecular Engineering. Biotechnology Progress, 16, 2-16. Park, C. B., S. B. Lee and Dewey. D. Y. Ryu. 2000. Penicillin acylase-catalyzed synthesis of cefazolin in water-solvent mixture: Enhancement effect of ethyl acetate and carbon tetrachloride on the synthetic yield. J. Molecular Catalysis B: Enzymatic, 9, 275-281. Park, C. S., C. C. Chang, D. D. Y. Ryu, and J. Y. Kim. 1999. Expression and high level secretion of Trichoderma reesei Endogluconase I in Yarrowia lipolytica. Yeast. Appl. Biochem. and Biotechnol. 87, 1-15.