NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD
The durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a decay test with a brown rot fungus (Coniophora...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2010-04-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_1126_SehlstedtPersson_PK_Heating_of_Heartwood/619 |
| _version_ | 1811269582594244608 |
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| author | Margot Sehlstedt-Persson Olov Karlsson |
| author_facet | Margot Sehlstedt-Persson Olov Karlsson |
| author_sort | Margot Sehlstedt-Persson |
| collection | DOAJ |
| description | The durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a decay test with a brown rot fungus (Coniophora puteana), and the concentration of total phenolics was measured according to the Folin-Ciocalteu (FC) assay. The relation between mass loss and phenolics in dried heartwood showed a weaker negative correlation at lower levels of phenolics as compared to the strong relationship found in a study on heartwood from standing Scots pine trees. Mass loss in dried heartwood showed a weak negative correlation to density. Heating of extractives-rich green sawdust under moist conditions resulted in a reduction of phenolics with temperature up to 180 oC and with increasing time. The concentration of phenolics in heated, green sawdust was higher in extractives-rich pine heartwood than in heartwood with a normal extractives content. |
| first_indexed | 2024-04-12T21:44:39Z |
| format | Article |
| id | doaj.art-a3cb5756bb2547eea2bb7951ec3fce14 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-04-12T21:44:39Z |
| publishDate | 2010-04-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-a3cb5756bb2547eea2bb7951ec3fce142022-12-22T03:15:41ZengNorth Carolina State UniversityBioResources1930-21262010-04-015211261142NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOODMargot Sehlstedt-PerssonOlov KarlssonThe durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a decay test with a brown rot fungus (Coniophora puteana), and the concentration of total phenolics was measured according to the Folin-Ciocalteu (FC) assay. The relation between mass loss and phenolics in dried heartwood showed a weaker negative correlation at lower levels of phenolics as compared to the strong relationship found in a study on heartwood from standing Scots pine trees. Mass loss in dried heartwood showed a weak negative correlation to density. Heating of extractives-rich green sawdust under moist conditions resulted in a reduction of phenolics with temperature up to 180 oC and with increasing time. The concentration of phenolics in heated, green sawdust was higher in extractives-rich pine heartwood than in heartwood with a normal extractives content.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_1126_SehlstedtPersson_PK_Heating_of_Heartwood/619DryingdurabilityphenolicsScots pineheartwoodFolin-Ciocalteau assay |
| spellingShingle | Margot Sehlstedt-Persson Olov Karlsson NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD BioResources Drying durability phenolics Scots pine heartwood Folin-Ciocalteau assay |
| title | NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD |
| title_full | NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD |
| title_fullStr | NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD |
| title_full_unstemmed | NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD |
| title_short | NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD |
| title_sort | natural durability and phenolic content in dried scots pine heartwood |
| topic | Drying durability phenolics Scots pine heartwood Folin-Ciocalteau assay |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_1126_SehlstedtPersson_PK_Heating_of_Heartwood/619 |
| work_keys_str_mv | AT margotsehlstedtpersson naturaldurabilityandphenoliccontentindriedscotspineheartwood AT olovkarlsson naturaldurabilityandphenoliccontentindriedscotspineheartwood |