Ph. D. - Yonsei University (Doctor of Engineering - Biotechnology), 1977 
M. Sc. - Yonsei University (Master of Engineering - Chemical Engineering), 1967
B. Sc. - Yonsei University (Chemical Engineering), 1965

1977 ~ Present : Professor, Department of Biotechnology, Yonsei University, Korea
1994 ~ Present : The Director. Bioproducts Research Center
1997 ~ Present : A Member of Advisory Committee, Ministry of Science & Technology
1995 ~ Present : A Member of  Appraiser, KNITQ
1997 ~ Present : A Member of  Appraiser, Ministry of  Education
1996 ~ Present : A member of  Judging Committee,  The Office of National Tax Adminstration
1996 ~ Present : A Member of  Advisory Committee, Ministry of Tradition & Industry

1. Development of Nonthermal Processing of Food & Biological Materials by Electrical and Physical Methods
2. Development of Novel Food Processing Technology using Ohmic Heating
3. Development of Milk Pasteurization Equipment Using Low Temperature Plasma
4. Fermentation of Bacterial Cellulose and Strain Improvement by Recombinant DNA Technology
5. Screening and Application of Extremophile and Novel Enzyme
6. Development of Antitrombic Biofood Ingredients
7. Development of Novel Biopreservative : Bacteriocin Production Using Lactic Acid Bacteria and Development of Novel Bioreactor

  1. S.I.Hong, Y.J. Kim and Y.R. Pyun : Acid Tolerance of Lactobacillus plantarum from Kimchi. Lebensm.-Wiss. u.-Technol. 32, in printing (1999)
  2. J.W. Hwang, Y.K. Yang, Y.R. Pyun and Y.S. Kim : Effect on pH and dissolved oxygen on cellulose production by Acetobacter xylium BRC5 in agitated culture. J. Ferm. Bioeng. 86, in printing (1999)
  3. S.I. Hong, W.S. Park and Y.R. Pyun : Non-thermal inactivation of Lactobacillus plantarum as influenced by pressure and temperature of pressurized carbon dioxide. Intern. J. Food Sci. Technol. 34, in printing (1999)
  4. J.K. Hwang, H.J. Kim, S.J. Yoon, J.S. Shin and Y.R. Pyun : Antibacterial activity of chitosan against E.coli O157:H7. Hayati. 6(1), 13~18 (1999)
  5. S. Ani, P.M. Agung, H. Ai and Y.R. Pyun : Kajian pengaruh pH, jenes dan konsetrasi sumber karbon pada produksi selulosa oleh Acetobacter xylium 85-1. J. Tek Ind. Per. 7(3), 126~135 (1999)
  6. S.Y. Kim, C.K. Mok abd Y.R. Pyun : Continuous recycling sterilization of Yakju Rice Wine) using pulsed electric fields. Kor. J. Food Sci. Technol., 31(2) 410~415(1999)
  7. N.H. Kim, J.K. Shin, H.Y. Cho and Y.R. Pyun : Effects of high voltage pulsed electric fields on the extraction carotenoid from Phaffia rhodozyma. Kor. J. Food Sci. Technol. 31(3) 720~726 (1999)
  8. Y.R. Pyun, J.S. Jo, J.W. Park and H.H. Shin : Effect of oxygen on invertase expression in continuous culture of recombinant Saccharomyces cerevisiae containing suc gene. Appl. Microbiol. Biotechnol. 51(3), 334~339 (1999)
  9. J.K. Hwang, H.J. Kim, J.S. Shim and Y.R. Pyun : Antibacterial effect of chitosan on Streptococcus mutans. Korean J. Food Sci. Technol. 31(2), 522~526 (1999)
  10. Production of High Concentration Cellulose by Acetobacter xylinum BRC5 in  Fed-Batch Culture. Kor. J. Biotechnol. Bioeng. 14(3) 284~290 (1999)
  11. S.I. Hong and Y.R. Pyun : Inactivation of Lactobacillus plantarum sp. by high pressure carbon dioxide. Lebensm.-Wiss. U.-Technol. 30, 681~685 (1998)
  12. H.M. Hong, S.H. Song, Y.R. Pyun and Y.S. Kim : Evidence that a ¥â-1,4-endoglucanase secreted by  Acetobacter xylium plays an essential role for the formation of cellulose fiber. Biosci. Biotechnol. Biochem. 62(11), 2257~2259 (1998)
  13. S.S. Yoo, K. Kim, S.Y. Lee and Y.R. Pyun : Characterization of flavor components on cocoa mass produced by Better Taste & Color Treatment using GC/MS and principal component analysis. Food Sci. Biotechnol. 7(4), 248~252 (1998)

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