Environmentally friendly temporary anti-mould treatment of packaging material before drying
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| Format: | Artículo científico |
| Language: | en |
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Universidad del Bío Bío
2008
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| _version_ | 1876474878878547968 |
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| author | Johannes Welling |
| author_facet | Johannes Welling |
| contents | Environmentally friendly temporary anti-mould treatment of packaging material before drying Johannes Welling Gerda Lambertz Agrociencias Anti ISPM 15 blue stain heat treatment mould treatment According to FAO ISPM No 15, in international trade wood packaging material on the basis ofsawn timber requires to be heat-treated to avoid spreading of harmful organisms. Heat-treatment meansa minimum core temperature of the wood of 56° C for a minimum of 30 minutes. ISPM No 15 does notdefi ne moisture content and therefore does not include rules for the drying process.Practitioners report that fresh sapwood, after having undergone a pure heat treatment without anykind of drying, shows a great affi nity to fungi (mould and blue stain). Even though the infestation does notaffect the strength properties of the wood, it must be considered as an optical and a sanitary problem. Anenvironmentally friendly, cheap and easy to use technique for temporary anti-mould protection of heattreatedwood is needed to bridge the time span between sawing, heat treatment and air or kiln drying.Results derived from laboratory experiments have shown that the heat-treatment affects the elution ofthe lipid components within pine sapwood. While searching for alternatives to conventional preservationmethods, different environmentally compliant agents (particularly aqueous solutions containing sodiumandpotassium carbonate) were found to inhibit the germination of mould and blue stain fungi spores onwood packaging material surfaces in a temporary manner. Besides their effectiveness, the usage of theseagents to achieving the temporary protection (e.g. for a couple of weeks) is economically feasible andeasily applicable in industrial practice. However, drying (either naturally or technically) is indispensableto avoid fungal hazard on the long run. A combination of temporary treatment immediately after sawingfollowed by a drying-process (long lasting protection) seems to be the most effective method to protectISPM No 15 treated wood packaging material against mould. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510103 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.1 Vol.10 |
| format | Artículo científico |
| id | redalyc_48510103 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad del Bío Bío |
| spellingShingle | Environmentally friendly temporary anti-mould treatment of packaging material before drying Johannes Welling Agrociencias Anti ISPM 15 blue stain heat treatment mould treatment Environmentally friendly temporary anti-mould treatment of packaging material before drying Johannes Welling Gerda Lambertz Agrociencias Anti ISPM 15 blue stain heat treatment mould treatment According to FAO ISPM No 15, in international trade wood packaging material on the basis ofsawn timber requires to be heat-treated to avoid spreading of harmful organisms. Heat-treatment meansa minimum core temperature of the wood of 56° C for a minimum of 30 minutes. ISPM No 15 does notdefi ne moisture content and therefore does not include rules for the drying process.Practitioners report that fresh sapwood, after having undergone a pure heat treatment without anykind of drying, shows a great affi nity to fungi (mould and blue stain). Even though the infestation does notaffect the strength properties of the wood, it must be considered as an optical and a sanitary problem. Anenvironmentally friendly, cheap and easy to use technique for temporary anti-mould protection of heattreatedwood is needed to bridge the time span between sawing, heat treatment and air or kiln drying.Results derived from laboratory experiments have shown that the heat-treatment affects the elution ofthe lipid components within pine sapwood. While searching for alternatives to conventional preservationmethods, different environmentally compliant agents (particularly aqueous solutions containing sodiumandpotassium carbonate) were found to inhibit the germination of mould and blue stain fungi spores onwood packaging material surfaces in a temporary manner. Besides their effectiveness, the usage of theseagents to achieving the temporary protection (e.g. for a couple of weeks) is economically feasible andeasily applicable in industrial practice. However, drying (either naturally or technically) is indispensableto avoid fungal hazard on the long run. A combination of temporary treatment immediately after sawingfollowed by a drying-process (long lasting protection) seems to be the most effective method to protectISPM No 15 treated wood packaging material against mould. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510103 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.1 Vol.10 |
| title | Environmentally friendly temporary anti-mould treatment of packaging material before drying |
| topic | Agrociencias Anti ISPM 15 blue stain heat treatment mould treatment |
| url | https://www.redalyc.org/articulo.oa?id=48510103 |