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고효율 효소를 분비하는 균주의 선발 및 신문고지의 효소탈묵 특성(제5보) - Bacillus sp.에서 단리한 Cellulase와 Xylanase의 특성 -
박성철,이양수,정인수,Park, Seong-Cheol,Lee, Yang-Soo,Jeong, In-Soo 한국펄프종이공학회 2005 펄프.종이기술 Vol.37 No.3
This study was carried out to investigate the characteristics of extracellular cellulase and xylanase from 4 selected different species, such as enzyme activity and stability by pH, temperature and metal ions, for application into enzymatic deinking system. The optimal temperature and pH for enzyme activity of Bacillus pumilus I, B. subtilis I, B. pumilus II and B. subtilis II were mainly $40{\sim}60^{\circ}C$ and pH $6.0{\sim}7.0$, respectively. Certain metal ions, calcium and cobalt, elevated enzyme activity, even though there were different results of enzyme activities based on various metal ions in 4 different species. With these results we suggest that enzymatic deinking system should be proceed at $50^{\circ}C$ with neutral pH condition.