豆腐비지 酸 加水分解物로 調製한 木材防腐劑에서 酸 濃度와 구리/硼素系 鹽 添加에 따른 防腐能의 影響
Effects of Acid Concentration and the Addition of Copper/Boron Salts on the Efficacy of Okara-based Wood Preservatives
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두부비지를 이용한 친환경적인 목재방부제를 조제하고, 두부비지 가수분해에 사용하는 산의 농도 및 염의 구성에 따른 방부능의 영향을 조사하는 실험을 수행하였다. 두부비지 방부제는 25℃에서 1시간 동안 0, 1%, 그리고 2% 황산에 의해 가수분해된 두부비지와 염화구리 또는/그리고 붕산나트륨으로 조제되었고, 목재시편 내에 감가압법으로 주입하여 주입된 시편을 70℃ 열수에서 72시간 동안의 용탈실험을 거친 후, 갈색부후균 Trametes palustris 및 백색부후균 Tyromyces versicolor에 대한 내후성을 조사하였다. 실험결과 두부비지를 가수분해한 산의 농도가 높아짐에 따라 방부제의 주입능과 내후성이 증가하였고, 용탈성은 감소하였다. 두부비지 산 가수분해물/구리염 또는 두부비지 산 가수분해물/구리염/붕소염으로 처리된 목재시편은 T. palustris 및 T. versicolor에 대한 우수한 방부효능을 보였으나, 두부비지 산 가수분해물/붕소염 또는 두부비지가 포함되지 않은 방부제로 처리된 목재시편은 T. palustris에 의한 부후가 관찰되었다. 상기 결과를 토대로 1% 황산에 의해 가수분해한 두부비지, 염화구리 그리고 붕산나트륨으로 조제한 목재방부제가 두부비지를 이용한 목재방부제 조제의 최적 조건으로 평가되었다.
Abstract
This research was carried out to formulate environmentally friendly wood preservatives with okara and to investigate the effects of the acid concentration used for the hydrolysis of okara and salt type on the decay resistance of the preservatives. Okara-based preservatives were formulated with okara hydrolyzates, which were prepared with 0, 1%, and 2% sulfuric acid at 25℃ for 1 hr, and salts such as copper chloride and/or sodium borate. The preservatives were treated into wood blocks by vacuum-pressure method, and then the treated wood blocks were leached in 70℃ hot water for 72 hrs. The fungal treatments of the leached wood blocks were conducted by brown-rot fungus, Tyromyces palustris, and white-rot fungus, Trametes versicolor, to examine the decay resistance of the preservatives. As the acid concentration used for hydrolysis of okara increased, the treatability and decay resistance of the preservatives were improved, which the leachability was decreased. Wood blocks treated with the okara/copper or okara/copper/borax, showed very good decay resistance against T. palustris and T. versicolor. However, wood blocks treated with the okara/borax and okara-free preservative solutions, were observed the fungal decay by T. palustris. The optimal conditions for the preparation of okara-based wood preservatives were formulated with okara hydrolyzed with 1% sulfuric acid, copper chloride and borax.
참고문헌 (22)
- Brown, C, "Toxicity of chromated copper arsenate (CCA)-treated wood to non-target marine fouling communities in Langstone Harbour", Portsmouth, 42(4), pp.310~318 (2001)
- Baldwin, W, "Sediment toxicity study of CCA-C-treated marine piles", Forest Products Journal, 46(3), pp.42~50 (1996)
- Kakitani, T, "Effect of pyrolysis on solvent extractability of toxic metals from chromated copper arsenate (CCA)-treated wood", Journal of hazardous materials, 109(1-3), pp.53~57 (2004)
- Solo-Gabriele, H, "Characteristics of chromated copper arsenate-treated wood ash", Journal of hazardous materials, 89(2-3), pp.213~232 (2002)
- "Environmental Protection Agency: Chromated copper arsenate(CCA) pesticides"[URL]
- "European Union Commission: CCA-Treated Timber Regulations, European Union"[URL]
- "환경부: 법령/정책: 법령정보: 고시/훈령/예규: 환경부고시제2007-152호, ‘제조·수입 또는 사용 등을 금지하거나제한하는 화학물질에 관한 규정 일부개정’"[URL]
- Freeman, M, "2 Nonarsenical Wood Protection: Alternatives for Chromated Copper Arsenate", Creosote and Pentachlorophenol, Environmental Impacts of Treated Wood, pp.19~ (2006)
- Yang, I, "Soy protein combined with copper and boron compounds for providing effective wood preservation", Journal of the American Oil Chemists' Society, 83(3), pp.239~245 (2006)
- Thevenon, M, "Protein borates as non-toxic, long-term, wide-spectrum, ground-contact wood preservatives", Holzforschung, 52(3), pp.241~248 (1998)
- Haruhiko Yamaguchi KY, "Influence of Tannin-Copper Complexes as Preservatvies for Wood on Mechanism of Decomposition by Brown-rot Fungus FomitopsisPalustris", Holzforschung, 55, pp.464~470 (2001)
- Thevenon, M, "One-step tannin fixation of non-toxic protein borates wood preservatives", Holz als Roh- und Werkstoff, 56(1) (1998)
- Thevenon, M, (1998), Holz als Roh-und Werkstoff (Germany)
- Hackler, L, "A comparison of the nutritional value of protein from several soybean fractions", Journal of Nutrition, 80(2), pp.205~ (1963)
- 조승용, "비지 단백질로 제조한 가식성필름의 기계적 및 물질투과특성", 한국포장학회지, 5(2), pp.9~16 (1999)
- 이명숙, "두부비지를 이용한 박테리오신 생산", 한국식품영양과학회지, 28(1), pp.74~80 (1999)
- 이선희, "박테리오신의 생산을 위한 두부비지의 이용 1. 두부비지에서 분리한 Bacillus sp. 에 의한Amylase 의 생산조건", 한국식품위생안전성학회지, 151(33), pp.271~276 (2000)
- Ohno, A, "Use of soybean curd residue, okara, for the solid state substrate in the production of a lipopeptide antibiotic, iturin A, by Bacillus subtilis NB 22", Process Biochemistry, 31(8), pp.801~806 (1996)
- Mazela, B, "Use of animal proteins to limit leaching of active copper ions preservatives from treated wood", Holzforschung, 57(6), pp.593~596 (2003)
- Mazela, B, "Protein impact on the capability of the protein-borate preservative penetration and distribution into pine and aspen wood", Holz als Roh-und Werkstoff, 65(2), pp.137~144 (2007)
- Thevenon, M, "Polyborate ions' influence on the durability of wood treated with non-toxic protein borate preservatives", Holz als Roh-und Werkstoff, 61(6), pp.457~464 (2003)
- Ahn, S, "Efficacy of wood preservatives formulated from okara with copper and", or boron salts, 2008, pp.54(6), 495~501