Effect of Proteolytic Enzyme on the Unhairing Degree of Pelt

나피의 탈모율에 미치는 단백질 분해 효소의 효과

  • Lee, Jong-Seok (Department of Chemical Engineering, College of Engineering, Hanyang University) ;
  • Seo, Gyo-Taeg (Department of Chemical Engineering, Chung Cheong College) ;
  • Kim, Young Chai (Department of Chemical Engineering, College of Engineering, Hanyang University) ;
  • Moon, Sei-Ki (Department of Chemical Engineering, College of Engineering, Hanyang University)
  • 이종석 (한양대학교 화학공학과) ;
  • 서교택 (충청대학 화학공업과) ;
  • 김영채 (한양대학교 화학공학과) ;
  • 문세기 (한양대학교 화학공학과)
  • Received : 1997.09.11
  • Accepted : 1999.06.23
  • Published : 1999.08.10

Abstract

The effect of proteolytic enzyme on the unhairing process has been studied. this enzyme significantly changed the physical properties of pelt for leather shoes. A SEM was used to examine physical properties of the pelt. Even though bio-tech treatment using proteolytic enzyme slightly reduced the degree of unhairing compared to chemical treatment. Physical property of the pelt is better and this method is environmentally favorable. $H_{2}S$ gas produced in the chemical treatment was not detected and the value of COD and BOD for waste water after the unhairing process were reduced to 939 mg/L and 5268 mg/L, respectively. We found that a process with 0.4~0.5% proteolytic enzyme for 20 h at $29{\sim}30^{\circ}C$ is most suitable for the unhairing process.

References

  1. JALCA v.83 K. T. W. Alexander
  2. JALCA v.85 D. Brady;J. R. Dungan;A. E. Russell
  3. Fundamentals of Leather Manufacture E. heidemann
  4. JALCA v.77 J. N. Trapp;D. G. Bailey
  5. 오산전문대학 논문집 v.12 한상덕;이종석;조영진
  6. J. Soc. Kor. Ind. Sys. Eng. v.18 S. D. Han;J. C. Lee;J. S. Lee;D. Y. Yang;Y. J. Cho;H. J. Kim
  7. J. Eng. & Technol. v.5 S. D. Han;M. Y. Kim;J. S. Lee;Y. K. Yoon;Y. J. Cho;E. K. Lee
  8. The Chemistry and Technology of Leather v.1 F. O'flaherty;W. T. Roddy;R. M. Lollar
  9. 생신기술연구보고 v.6 서교택;이종석;유선종
  10. 오산전문대학 논문집 v.15 이종석;유선종
  11. 생산기술연구보고 v.7 서교택;이종석;유선종
  12. JALCA v.77 B. M. Haines
  13. JALCA v.75 E. H. Bitcover;J. E. Cooper;D. G. Bailey
  14. JALCA v.75 J. E. Cooper;E. H. Bitcover;E. M. Filachione;J. W. Harlan;D. G. Bailey;S. H. Feairheller
  15. JALCA v.77 I. L. Chang;N. S. Zaleiko;S. A. Peterson