The role of extractives in the natural durability of the heartwood of Dicorynia guianensis Amsh: New insights in antioxydant and antifungal properties

Autor: Nadine Amusant, Milcard Faustin, Florence Bobelé Niamké, Augustin Amissa Adima, David Virieux, Jean-Luc Pirat, Séraphin Kati-Coulibaly, Jean-Baptiste Say Anouhe
Přispěvatelé: Laboratoire de Nutrition et Pharmacologie, Université Félix Houphouët-Boigny (UFHB), LAPISEN, Institut National Polytechnique Félix Houphouët Boigny de Yamoussoukro (INP-HB), Institut National Polytechnique Houphouët-Boigny [Cote d'Ivoire], Ecologie des forêts de Guyane (UMR ECOFOG), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-AgroParisTech-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Niamké, Florence Bobelé, Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Cooperation and Cultural Action (SCAC) of the Embassy of France in Côte d'Ivoire, CIRAD, French National Research Agency as part of the 'Investissement d'Avenir' program [CEBA, ANR-10-LABX-0025]
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Annals of Forest Science
Annals of Forest Science, Springer Verlag/EDP Sciences, 2018, 75 (1), pp.15. ⟨10.1007/s13595-018-0691-0⟩
Annals of Forest Science 1 (75), 1-10. (2018)
Annals of Forest Science, Springer Nature (since 2011)/EDP Science (until 2010), 2018, 75 (1), pp.15. ⟨10.1007/s13595-018-0691-0⟩
ISSN: 1286-4560
1297-966X
DOI: 10.1007/s13595-018-0691-0⟩
Popis: International audience; Key messageThe natural durability of Dicorynia guianensis Amsh ’s heartwood is conferred by the high content of antioxidant phenolic compounds, especially tannins and flavonoids combined with the presence of fungistatic alkaloids. The content of phenolic compounds increases according to the natural durability classes, from durable wood (class 2) to moderately durable wood (class 3) and correlated to the antioxidant capacity.Context. The heartwood of Dicorynia guianensis Amsh is resistant to white rot fungi decay, but the mechanism of this natural durability is not fully elucidated.Aims. Biochemical studies were carried out in order to better understand the role of extractives in natural durability of D. guianensis.Methods. The powders from durable and moderately durable heartwood were extracted with methanol, ethanol, and hot water. The quantity of total phenols, tannins, and flavonoids as well as antioxidant activity, evaluated by 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) were determined using colorimetric methods. Antifungal activity was assessed by using two white rot fungi. The bioactive fractions and compounds were obtained using bio-guided fractionation, HPLC isolation, MS and RMN spectroscopic analyses.Results. Durable woods contain higher amounts of heartwood extract and antioxidant activity. Antioxidant activity was highly correlated with the content of phenolics. The purification of the most antioxidant fraction FII affords the characterization of (+)-catechin (−)-epicatechin, neoastilbin, astilbin, and isoastilbin. Alkaloid fraction FIII exhibits dose-dependent fungistatic activity against Pycnoporus sanguineus Linnaeus and Trametes versicolor Quelet.Conclusion. Phenolic antioxidants and fungistatic alkaloids positively impact the natural durability of D. guianensis.
Databáze: OpenAIRE
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