Cellulolytic enzymes were prepared from alkaline resistant microorganisms which were newly screened from calcic soil. Characteristics of enzymes and enzymatic deinking efficiency of wastepaper were investigated. The results were summarized as fellows: 1. The recovery rate of crude enzyme was 93.7% in Bio-B and 57.4% in Bio-F. 2. The protein content in crude enzymes was lowest and the thermal stability of crude enzymes was highest in Bio-F. 3. The brightness gain of Bio-F deinked pulp was best in ONP and Bio-B deinked pulp was best in MOW. 4. The reject yield was increased with enzymatic deinking flotation process. 5. The residual ink area of paper was increased with enzymatic deinking and large size of ink particles were remained in paper.

• 윤경동(Department of Wood Science and Technology, Kyungpook National University) | Yoon, Kyung-Dong
• 박성배(Department of Wood Science and Technology, Kyungpook National University) | Park, Soung-Bae
• 박용현(R&D Center, Bioneer Co., LTD.) | Park, Young-Hyun
• 엄태진(De) | Eom, Tae-Jin