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Paradis, S.; Guibal, D.; Vernay, M.; Beauchêne, J.; Brancheriau, L.; Chalon, I.; Daigremont, C.; Détienne, P.; Fouquet, D.; Langbour, P.; Lotte, S.; Mejean, C.; Thévenon, M.F.,;Thibaut, A.; Gérard, J. |
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Title |
Technological characteristics of 245 tropical and temperate timbers species |
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Conference Article |
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Year |
2012 |
Publication |
2012 IUFRO Conference proceedings |
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Volume |
Division 5 Forest products |
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Pages |
191 |
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Abstract |
Developed by the Cirad's “Mediterranean and Tropical Forest Products Research Unit”, the new release of TR OPIX software (version 7) presents the main characteristics of 245 tropical or temperate wood species. For each species, TROPIX provides data and information on: the scientific and local names of the species described, their origins (distribution maps) and any commercial restriction according to the CITES regulation; appearance of the log or wood, including pictures of wood and wood utilisations; leading physical and mechanical properties; natural durability against fungi/dry wood borers/termites, and preservation; drying behaviour, including a drying schedule given for information; processing behaviour (sawing, machining, assembling); appearance grading and visual grading for structural applications; actual and potential uses and reaction to fire. Some of this information is displayed in graphical format. TR OPIX 7 allows multicriteria search using preselected search terms or similarity to a different species. It also allows graphical species comparisons based on one or two physical or mechanical properties. Multicriteria searches results, graphics and technical sheets can be printed or exported as files. |
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Lisbonne, Portugal |
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8-13 juillet 2012 |
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EcoFoG @ webmaster @ |
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155 |
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Djenontin, S.T.; Amusant, N.; Ducrot, P.H.; Sohounhloue, D.C.K.; Pioch, D. |
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Title |
First report on the termiticidal activity of extracts of Annona squamosa (Annonaceae) seeds and on its active constituent squamocins |
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Conference Article |
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Year |
2012 |
Publication |
2012 IUFRO Conference proceedings |
Abbreviated Journal |
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Volume |
Division 5 Forest products |
Issue |
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Pages |
138-139 |
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Abstract |
Termites inflict severe damage on wood and impede usage of several forest species. The biological metabolites could potentially replace synthetic termiticidal products which are becoming more restricted to use. Annona squamosa is well known for its edible fruits – tropical custard apple. Annonaceous tetrahydrofuran acetogenins have attracted much interest due to their broad range of biological activities, and seeds containing them are reported to show insecticidal and abortifacient properties.
Under the course our exploratory investigation of non food valuable products from less known forest species (here from Benin), the fractions obtained from defatted cake of Annona squamosa seeds with solvents covering a broad range of polarity, revealed a significant termiticidal activity, when applied at 5 – 10 mg/cm² (non-polar solvent) and 1.2 – 5 mg/cm² (case of a more polar solvent).
Based on the result (0: no attack) from the standard procedure EN 118, these extracts could be used for preserving wood under class of use number 1. A derivatization step with Kedde reagents A and B, elemental analysis C,H,O, HPLC/MS and proton NMR showed the presence of squamocin type acetogenins (MW 594 and 622 g/mole: C35H62O7 and C37H66O7) as main components of the most active fraction (100% mortality within 7 days for a sample applied at 2 mg/cm²).
Additional work will be undertaken to confirm the structure of most active compounds in the extracts, and to check whether some Annona squamosa seed extracts (non timber products of sustainable management of native forest) could show even higher activity to protect wood under more adverse conditions and be alternative active natural products to synthetic compounds. |
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Lisbonne, Portugal |
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8-13 juillet 2012 |
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EcoFoG @ webmaster @ |
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186 |
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Niamké, F.; Kokutse, A.D.; Kadio, A.A.; Lemenager, N.; Baudasse, C.; Nourissier-Mountou, S.; Adima, A.A.; Amusant, N.; Chaix G. |
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Title |
Nirs Tools for Prediction of Main Extractives Compounds of Teak (Tectona grandis L.) Heartwood |
Type |
Conference Article |
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Year |
2012 |
Publication |
2012 IUFRO Conference proceedings |
Abbreviated Journal |
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Volume |
Division 5 Forest products |
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Abstract |
Biochemical and physiological process which occurred during heartwood formation have consequences on wood properties such as colour, natural durability and some mechanical properties. However, it is very time-consuming to take measurements of extractives contents. Teak has been reported to contain 1-hydroxy-2-methyl-anthraquinone, 2-hydroxy-methyl-anthraquinone, 2-methyl-anthraquinone, lapachol, 1,4-naphthoquinone for the main compounds.
In teak, natural durability is ascribed to extractives. Consequently, it’s possible to estimate natural durability by measurement of extractives indirectly. For the purposes of selection for the production of improved varieties, the number of samples to be measured rapidly exceeds the capacity of a traditional laboratory.
Near-infrared spectroscopy approach, based on spectral data and reference data, is a tool enabling many of the chemical properties of wood to be predicted and the number of laboratory measurements to be reduced exponentially. The issue here is a question of checking the effectiveness of NIRS tool to build models and predict the main extractive compounds of teak wood from Ivory Coast. We try to calibrate these chemical properties with Nirs spectral information measured on grounded wood.
The results show the possible use of NIRS to predict total phenol content and some main extractive compounds of teak heartwood as tectoquinone, 2-hydroxymethylanthraquinone, … Consequently, after verification on other sets of teak samples, which may or may not be included in the prediction model, NIRS can be used to predict extractive compounds accurately for a large number of samples, making it possible to estimate natural durability indirectly and to include these characteristics in the selection criteria for classifying wood and high throughput phenotyping. |
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Lisbonne, Portugal |
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8-13 juillet 2012 |
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EcoFoG @ webmaster @ |
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196 |
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Author |
Rodrigues, A.; Royer, M.; Amusant, N.; Beauchêne, J.; Herbette, G.; Eparvier, V.; Thibaut, A.; Salmen Espindola, L.; Thibaut, B.; Stien, D. |
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Title |
Antinomic natural self protection mechanism in long lasting woods : a case study with three tropical species from French Guiana |
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Conference Article |
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Year |
2009 |
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IRG/WP |
Abbreviated Journal |
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09 |
Issue |
10696 |
Pages |
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Keywords |
wood; natural durability; wood degradation; antifungal extractives |
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Abstract |
We demonstrate in this work through 3 examples that Amazonian trees may specialize long-lasting woods by means of at least to different approaches. Wallaba impregnates its wood with large amounts of weakly antifungal compounds acting in synergy, while tatajuba and louro vermelho woods are naturally impregnated with antifungal agents. Comparison of biological activities in vitro and concentrations in the woods indicate that these compounds alone may account for the natural durability of the two woods. |
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Beijing, China |
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Conference |
24-28 Mai 2009 |
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no |
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Call Number |
EcoFoG @ webmaster @ 100 |
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101 |
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Author |
Amusant, N.; Digeon, A.; Houël, E.; Beauchêne J. |
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Title |
Antifungal activity of wood extractives from waste products of steam distillation of Aniba rosaeodora |
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Conference Article |
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Year |
2012 |
Publication |
IRG/WP |
Abbreviated Journal |
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12 |
Issue |
10779 |
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Keywords |
Aniba rosaeodora; antifungal; valorization; wood waste; essential oil |
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Aniba rosaeodora, is a slow growing evergreens of the Lauraceae family which are indigenous over a wide range of the Greater Amazon Region (the Guianas and Venezuela, Brazilian Amazon…). The essential oil obtained from the wood has a characteristic aroma and is a long-established ingredient in the more expensive perfumes. Around the olfactive characteristic of the essential oil is due to the presence of levogyre linalol. The steam distilled wood oil is obtained in a yield ranging around 1% and up to 90% of the oil consists of optically active linalol. This work is focused on the valorization of steam distillated sawdust, waste obtained from extraction of essential oil. After steam distillation, the sawdust was extracted by ethyl acetate and methanolic solvents and the antifungal activity was evaluated against basidomycetes fungi. The both extracts were active in vitro against white and brown rot fungi and allowed to propose these extractives as wood preservative agent. |
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Kuala Lumpur, Malaysia |
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5-6 Octobre 2012 |
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EcoFoG @ webmaster @ |
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204 |
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Author |
Amusant, N.; Beauchêne J.; Fournier, M. |
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Title |
Intraspecific variability of durability of Wapa courbaril (Eperua grandiflora) against Antrodia sp. and Coriolus versicolor: effect of radial and height position in the stem |
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Conference Article |
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Year |
2004 |
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IRG/WP |
Abbreviated Journal |
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04 |
Issue |
10531 |
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Natural durability; Amazonian wood, variability; basidiomycetes |
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The variation of a lesser-used species, Eperua grandiflora attacked by brown and white rot has been examined. Trees of this specie showed differences in their behaviour against the type of rot used and also showed evidence of intra and inter tree variation. The “tree” effect is very significant concerning natural resistance. In the same way, there is variation of durability observed according to radial and vertical position in the stem. Although the vertical effect is less significant from practises point of view. |
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Ljubljana, Slovenia |
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6 Octobre 2004 |
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EcoFoG @ webmaster @ |
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206 |
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Author |
Niamké, F.; Amusant, N.; Lemenager, N.; Chaix, G.; Thévenon, M.-F. ; Baudassé, C. ; Kati-Coulibaly, S.; Amissa Adima, A.; Gossan Ado, I.; Jay-Allemand, C. |
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Title |
Decay resistance attributes of teak (Tectona grandis L. f.) wood: comparison of the fungicidal activities of quinones |
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Conference Article |
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2011 |
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IRG/WP |
Abbreviated Journal |
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11 |
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10752 |
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Tectona grandis; decay resistance; quinone; heartwood; brown and white rot fungi |
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The implication of quinones in decay resistance of teak wood is controversial. To better understand the role of individual quinone in this property, we studied the correlations between this latter and the content of 2-(hydroxymethyl)anthraquinone, tectoquinone, anthraquinone-2-carboxylic acid, 1,4-naphthoquinone, lapachol and the new compound 4’,5’-dihydroxy-epiisocatalponol found in teak wood. Then, we studied the fungicidal activities of these quinones in comparison to acetone/water extracts from teak heartwood and sapwood and also with the commercial biocide tebuconazole. Broth dilution technique was used to assess the toxicity of these compounds against Trametes versicolor and Poria placenta. Decay resistance was measured according to current standards and individual quinones content were quantified by high performance liquid chromatography. High positive correlations were found between teak decay resistance and the content of 4’,5’-dihydroxy-epiisocatalponol, tectoquinone, 2-(hydroxymethyl)anthraquinone. Whereas no correlation was found with anthraquinone-2-carboxylic acid, lapachol and 1,4-naphthoquinone. Concerning the fungicidal activities of teak wood extractives, acetone/water heartwood extract was toxic against the two fungi while that of acetone/water sapwood was only fungistatic. 1,4-naphthoquinone and 4’,5’-dihydroxy-epiisocatalponol from the naphthoquinones family were fungicide. However, lapachol and all studied anthraquinones (2-(hydroxymethyl)anthraquinone, anthraquinone-2-carboxylic acid and tectoquinone) were fungistatic or not toxic. In the present study, 1,4-naphthoquinone was found the more toxic with a fungicidal activity 1000-times lower than that of the commercial biocide and over 2000-times lower than that of acetone/water heartwood extracts. These results show that decay resistance of teak wood could be mostly due to the content of naphthoquinone, particularly to that of 1,4-naphthoquinone indicating that it could be used as a potential wood preservative for lesser durable species. |
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Queenstown, New Zealand |
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Conference |
5-8 Décembre 2011 |
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EcoFoG @ webmaster @ |
Serial |
205 |
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Author |
Zaremski, A.; Gastonguay, L.; Zaremski, C.; Chaffanel, F.; Beauchêne, J.; Le Floch, G. |
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Title |
Biodegradation of treated wood waste by native fungal communities of tropical soil in French Guiana |
Type |
Conference Article |
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Year |
2012 |
Publication |
IRG/WP |
Abbreviated Journal |
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Volume |
12 |
Issue |
50285 |
Pages |
43 |
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Keywords |
fungal community; basidiomycetes; sequencing; DNA; ITS1 and ITS 4; D-HPLC; CE-SSCP; PCP; CCA |
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Abstract |
Woods have been protected with fungicides for a long time, and the effects of these fungicides on soil after being leached into the ground have turned out to be a true environmental issue. It is in this perspective that we are proposing to study fungal communities of these contaminated woods in a purpose of bioremediation. Most of precedent studies have focused on ability of some Basidiomycetes and white rot fungi to degrade these biocide products. Treated and reference (non-treated) woods samples have been incubated in containers of forest soil in Guyana. The first two samplings of these woods and soils have been realized five months apart. A crop and molecular study allowed us to isolate and identify forty strains of Ascomycetes able to develop on wood and resist xenobiotics. Until now, no Ascomycete was known to resist xenobiotics. Furthermore, a study of fungal communities of the woods and soil were done by D-HPLC and SSCP, and then analyzed by ACP. According to these analyses, biocides are leached in the soil and have an impact on these fungal communities, which are different depending on time of sampling and the way wood is processed. |
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Kuala Lumpur, Malaysia |
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Conference |
6-10 mai 2012 |
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EcoFoG @ webmaster @ |
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156 |
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Author |
Brémaud, I.; Minato, K.; Thibaut, B. |
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Title |
Mechanical damping of wood as related to species classification: a preliminary survey |
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Conference Article |
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2009 |
Publication |
Proceedings of the Sixth Plant Biomechanics Conference |
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548-554 |
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UMR EcoFoG |
Place of Publication |
Cayenne, French Guyana |
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Thibaut, B. |
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November 16 - 21, 2009 |
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EcoFoG @ webmaster @ 12 |
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94 |
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Cabrolier, P.; Beauchêne, J.; Thibaut, B. |
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Title |
Is interlocked grain an adaptive trait for tropical tree species in rainforest ? |
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Conference Article |
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Year |
2009 |
Publication |
Proceedings of the Sixth Plant Biomechanics Conference |
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548-554 |
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UMR EcoFoG |
Place of Publication |
Cayenne, French Guyana |
Editor |
Thibaut, B. |
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November 16 – 21, 2009 |
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EcoFoG @ webmaster @ 130 |
Serial |
95 |
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