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This study was performed to understand the changes in wood extractives, mainly acetone extracts, in pine woods (Pinus densiflora and Pinus rigida) treated by three blue stain fungi (BSF) such as native BSF in Korea, Leptographium sp., screened Albino strain(BSFcs-1) and commercial Cartapip and fungicide, Wood guard. In addition their pulping and bleaching properties were investigated. BSF treatment has significantly reduced acetone extracts, 25.1∼30.4% decreasing in red pine and 22.9∼28.1% in pitch pine. Three week aging treatment showed about 20% decreasing in red pine and 19.3% in pitch pine. There were not so significant differences in extracts reduction among native BSF and Albino-type strains (Albino strain, BSFcs-1, and commercial Cartapip). But fungicide, Wood guard, treated wood showed relatively lower decreasing rates of extractives, 14% in red pine and 10.1% in pitch pine. Therefore it is understandable that the fungicide could protect the wood from blue stain fungi attack, but has no effect on its extractive reduction. Concerned to pulping properties of BSF and fungicide treated woods, red pine and pitch pine, optimum pulping condition was 20% active alkali, wood to liquor ratio 1 to 6, 170℃, and 2.5 hr. In the case of BSF woods, optimum pulping condition was same as the sound wood, 43.5∼45% of pulp yields and 1.3∼1.45% of rejects. Screened pulp yield of fungicide treated wood was lower than those of BSF treated woods. Rejects in pulps were higher in fungicide-treated wood than BSF treated woods. Bleaching pulp yields were ranged of 92 to 93.5%. BSF, Cartapip and fungicide treated woods resulted in lower brightness of 55∼58%, but Albino-type strain(BSFcs-1) 61.3∼62.3%, very similar to untreated one. Therefore bleaching chemicals could be saved in the processing of chemical pulping.
목차
ABSTRACT
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
인용문헌
참고문헌 (26)
참고문헌 신청
[학술지(정기간행물)] - / 1992 / Alternatives to Petroleum-Based Biocides for Protecting Hardwood Lumber and Manufactured Products/Transferring Technologies for Industry No
[학술지(정기간행물)] - / 20002000 / Research in progress resin degradation and brightness increase of radiata pine with fungal treatment in lab and mill trials On Environment-ally Friendly and Emerging Technologies for a Sustainable Pulp and Paper Industry and (bbs)
[학술지(정기간행물)] - / 2005 / Frequency of blue staining fungi isolated from pine trees of experimental forests in Kangwon National 72 조남석정선화 펄프종이기술 37 2005University and its resistance to fungicide 33
[학술지(정기간행물)] - / 1994 / Role of Sporormiella similis as a potential bioprotectant of Populus tremelloides wood against the blue-stain fungus Ophiostoma piliferum trifo (v)
[학술지(정기간행물)] - / 1938 / Characteristics of sulfite and kraft pulps from blue-stained southern pine
[학술지(정기간행물)] - / 20002000 / Research in progress resin degradation and brightness increase of radiata pine with fungal treatment in lab and mill trials On Environment-ally Friendly and Emerging Technologies for a Sustainable Pulp and Paper Industry and (bbs)
[학술지(정기간행물)] - / 2005 / Frequency of blue staining fungi isolated from pine trees of experimental forests in Kangwon National 72 조남석정선화 펄프종이기술 37 2005University and its resistance to fungicide 33
[학술지(정기간행물)] - / 1994 / Role of Sporormiella similis as a potential bioprotectant of Populus tremelloides wood against the blue-stain fungus Ophiostoma piliferum trifo (v)
[학술지(정기간행물)] - / 1938 / Characteristics of sulfite and kraft pulps from blue-stained southern pine
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