Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay
Abstract Acetylation greatly increases the decay resistance of wood, but even highly acetylated wood can be degraded by fungi if given sufficient time. This study investigated the degradation of acetylated wood by the brown rot fungus Rhodonia placenta, aiming to understand the fungal-induced change...
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SpringerOpen
2025-02-01
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| Series: | Journal of Materials Science: Materials in Engineering |
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| Online Access: | https://doi.org/10.1186/s40712-025-00228-5 |
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| author | Tiina Belt Michael Altgen |
| author_facet | Tiina Belt Michael Altgen |
| author_sort | Tiina Belt |
| collection | DOAJ |
| description | Abstract Acetylation greatly increases the decay resistance of wood, but even highly acetylated wood can be degraded by fungi if given sufficient time. This study investigated the degradation of acetylated wood by the brown rot fungus Rhodonia placenta, aiming to understand the fungal-induced changes in wood-water relations that are associated with decay. Acetylated samples as well as unacetylated references were exposed to R. placenta in a stacked-sample decay test to generate samples in different stages of decay. The decayed samples were used to investigate changes in acetyl content, water vapour sorption, and maximum cell wall moisture content as measured by solute exclusion. R. placenta caused high mass losses in acetylated wood, but preferential deacetylation was seen only in highly acetylated samples in the early stages of decay. Acetylated samples showed increased hygroscopicity in sorption measurements as a result of R. placenta degradation, particularly at high relative humidity in desorption from the undried decaying state. The increase was very strong in the highly acetylated samples and took place at low mass losses, indicating that it may be at least partially related to the deacetylation of the wood material. Degradation also increased maximum cell wall moisture content, but the increase was stronger in the references than the acetylated samples, suggesting that the acetyl groups remaining in the samples continue to provide a cell wall bulking effect. |
| format | Article |
| id | doaj-art-6df9a73c212040ae9468593fa686ee7b |
| institution | DOAJ |
| issn | 3004-8958 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
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| series | Journal of Materials Science: Materials in Engineering |
| spelling | doaj-art-6df9a73c212040ae9468593fa686ee7b2025-08-20T02:48:29ZengSpringerOpenJournal of Materials Science: Materials in Engineering3004-89582025-02-0120111110.1186/s40712-025-00228-5Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decayTiina Belt0Michael Altgen1 Production Systems Unit, Natural Resources Institute FinlandDepartment of Wood Technology, Norwegian Institute of Bioeconomy ResearchAbstract Acetylation greatly increases the decay resistance of wood, but even highly acetylated wood can be degraded by fungi if given sufficient time. This study investigated the degradation of acetylated wood by the brown rot fungus Rhodonia placenta, aiming to understand the fungal-induced changes in wood-water relations that are associated with decay. Acetylated samples as well as unacetylated references were exposed to R. placenta in a stacked-sample decay test to generate samples in different stages of decay. The decayed samples were used to investigate changes in acetyl content, water vapour sorption, and maximum cell wall moisture content as measured by solute exclusion. R. placenta caused high mass losses in acetylated wood, but preferential deacetylation was seen only in highly acetylated samples in the early stages of decay. Acetylated samples showed increased hygroscopicity in sorption measurements as a result of R. placenta degradation, particularly at high relative humidity in desorption from the undried decaying state. The increase was very strong in the highly acetylated samples and took place at low mass losses, indicating that it may be at least partially related to the deacetylation of the wood material. Degradation also increased maximum cell wall moisture content, but the increase was stronger in the references than the acetylated samples, suggesting that the acetyl groups remaining in the samples continue to provide a cell wall bulking effect.https://doi.org/10.1186/s40712-025-00228-5AcetylationAnhydrideBrown rotDecayDurabilityDynamic vapour sorption |
| spellingShingle | Tiina Belt Michael Altgen Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay Journal of Materials Science: Materials in Engineering Acetylation Anhydride Brown rot Decay Durability Dynamic vapour sorption |
| title | Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay |
| title_full | Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay |
| title_fullStr | Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay |
| title_full_unstemmed | Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay |
| title_short | Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay |
| title_sort | changes in wood water relations in acetylated wood over the course of rhodonia placenta brown rot decay |
| topic | Acetylation Anhydride Brown rot Decay Durability Dynamic vapour sorption |
| url | https://doi.org/10.1186/s40712-025-00228-5 |
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