Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Changes in Extractives of Pine Woods Treated by Blue Staining Fungi

청변균처리에 의한 소나무재의 추출물함량 변화

  • Cho, Nam-Seok (Wood and Paper Science, Chungbuk National University) ;
  • Lee, Jong Kyu (Division of Forest Resources, Kangwon National University)
  • 조남석 (충북대학교 산림과학부 목재.종이과학) ;
  • 이종규 (강원대학교 산림과학대학 산림자원보호학 전공)
  • Received : 2005.05.06
  • Accepted : 2005.06.11
  • Published : 2005.07.25
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Abstract

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. BSF treatment has significantly reduced acetone extracts, 25.1~30.4% decreasing in red pine and 22.9~28.1% in pitch pine. The decreasing rates of fatty acids and sterols in woods were 10.6~11.2% by 3 week aging and 36~41.1% by BSF treatments, respectively. Triglycerides were also decreased to 5.68~9.4% by 3 week aging and 38.5~40.0% by BSF treatments, respectively. Resin acids were 6.1~11.3% by 3 week aging and 36~41.5% by BSF treatments, respectively. There were not so significant differences in extracts among native BSF and Albino-type strains (Albino strain, BSFcs-1, and commercial Cartapip). It was known that the Albino strain (BSFcs-1) screened for the biocontrol of wood discoloration has effectively decreased acetone extractives in pine woods.

본 연구에서는 변색균, 선발된 Albino 균주(BSFcs-1) 및 Cartapip 균주를 접종시킨 소나무재 및 리기다소나무재의 추출물함량 및 추출물성분의 화학적 조성 변화를 조사하였다. 청변균처리에 의하여 아세톤추출물의 함량이 급격히 감소되었는데, 무처리재의 추출물함량이 3주간의 천연노화처리로 약 20% 감소되었으며, 변색균, Albino균주(BSFcs-1) 및 Cartapip균주처리로 소나무재의 경우 25.1~30.4%의 추출물이 감소하였다. 한편 리기다소나무의 경우는 추출물 함량이 22.9~28.1% 감소되었다. 처리전 및 처리후의 추출물의 조성변화를 분석한 결과, 소나무재와 리기다소나무재 모두 자연노화 및 변색균처리로 그 함량이 낮아졌다. 추출물조성을 살펴보면 fatty acids와 sterols은 3주간 자연노화처리로 10.6~11.2%, 변색균처리로 36~41.1%의 높은 감소율을 나타냈다. 또한 triglycerides도 3주간 자연노화처리로 5.68~9.4%, 변색균처리로 38.5~40.0% 높은 감소율을 나타냈다. Resin acids의 경우 3주간 자연노화처리로 6.1~11.3%, 변색균처리로 36~41.5%의 감소율을 나타냈다. 추출물함량에 있어서 변색균과 선발된 무색균주(albino균주) 간에는 큰 차이가 없었다. 본 연구로부터 목재변색을 생물학적으로 방제할 목적으로 국내에서 선발된 albino균주(BSFcs-1)가 추출물함량을 효과적으로 감소시키는 것을 확인할 수 있었다.

Keywords

Acknowledgement

Supported by : KOSEF

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