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


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.


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