Extracts from teak wood industrial waste: decay performance of treated wood after artificial weathering
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Victor Fassina Brocco
, Lais Gonçalves da Costa
, Juarez Benigno Paes
, Grant T. Kirker
and Amy B. Bishell
Abstract
This study aimed to evaluate the preservative potential of extracts from teak wood industrial waste against artificial weathering and decay fungi. Teak extracts were obtained in hot water, acetone, ethanol and methanol and tested against brown-rot (Rhodonia placenta, Gloeophyllum trabeum, Neolentinus lepideus) and white-rot fungi (Irpex lacteus). Aging tests included the leaching test and artificial weathering in a QUV accelerated weathering tester. The chemical analysis of the extracts was carried out by gas chromatography-mass spectrometry (GC-MS), and the compounds were compared with the cited literature. The extracts were characterized as quinone derivatives (35 %), mainly tectoquinone (28 %), followed by squalene (8–12 %) and other phenolic compounds (6 %). Lapachol, although found in proportions of 0.7–0.9 %, plays an important role in wood durability and biocidal activity in teak extracts. The results obtained by the chemical analysis indicated that the main compounds identified in this study can act synergistically on the resistance of wood impregnated. Teak extracts ensured high resistance to the decay fungi tested and results showed better performance of acetone extracts. In view of the results obtained, it is recommended to carry out other tests (soil bed and field tests) to verify the long-term effects of the extracts.
Funding source: Conselho Nacional de Desenvolvimento Científico e Tecnológico
Award Identifier / Grant number: 206834/2017-9
Funding source: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Award Identifier / Grant number: 001
Acknowledgments
The authors acknowledge the contributions of Mark Mankowski with GC-MS analysis. The authors also acknowledge the USDA-FS International Program who allowed to conduct research at USDA-FS Forest Products Laboratory.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All the authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001 and National Council for Scientific and Technological Development (CNPq), grant number 206834/2017-9.
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Data availability: Not applicable.
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Articles in the same Issue
- Frontmatter
- Wood Growth/Morphology
- Examination of SWIR hyperspectral imaging for estimating corewood – outerwood transition age for Douglas-fir grown at different planting densities
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- Loblolly pine downed timber: Box-Behnken design and first derivative pretreatment for predictive modeling with near-infrared spectroscopy and machine learning (NIRS-ML)
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- Comprehensive creep compliance characterization of orthotropic materials using an automated system
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- Extracts from teak wood industrial waste: decay performance of treated wood after artificial weathering
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Articles in the same Issue
- Frontmatter
- Wood Growth/Morphology
- Examination of SWIR hyperspectral imaging for estimating corewood – outerwood transition age for Douglas-fir grown at different planting densities
- Wood Chemistry
- Loblolly pine downed timber: Box-Behnken design and first derivative pretreatment for predictive modeling with near-infrared spectroscopy and machine learning (NIRS-ML)
- Wood Physics/Mechanical Properties
- Comprehensive creep compliance characterization of orthotropic materials using an automated system
- Suitability of different sealer media for moisture uptake tests of wood
- Wood Technology/Products
- Improving the weathering properties of heat-treated wood by acetylation
- Extracts from teak wood industrial waste: decay performance of treated wood after artificial weathering
- Development of softwood kraft lignin-based conductive carbon for sustainable supercapacitor