000084367 001__ 84367
000084367 005__ 20200716101530.0
000084367 0247_ $$2doi$$a10.3390/f10100885
000084367 0248_ $$2sideral$$a113481
000084367 037__ $$aART-2019-113481
000084367 041__ $$aeng
000084367 100__ $$aCasado Sanz, María Milagrosa
000084367 245__ $$aWhite-rot fungi control on Populus spp. Wood by pressure treatments with silver nanoparticles, chitosan oligomers and propolis
000084367 260__ $$c2019
000084367 5060_ $$aAccess copy available to the general public$$fUnrestricted
000084367 5203_ $$aThere is growing interest in the development of non-toxic, natural wood preservation agents to replace conventional chemicals. In this paper, the antifungal activities of silver nanoparticles, chitosan oligomers, and propolis ethanolic extract were evaluated against white-rot fungus Trametes versicolor (L.) Lloyd, with a view to protecting Populus spp. wood. In order to create a more realistic in-service type environment, the biocidal products were assessed according to EN:113 European standard, instead of using routine in vitro antimicrobial susceptibility testing methods. Wood blocks were impregnated with the aforementioned antifungal agents by the vacuum-pressure method in an autoclave, and their biodeterioration was monitored over 16 weeks. The results showed that treatments based on silver nanoparticles, at concentrations ranging from 5 to 20 ppm, presented high antifungal activity, protecting the wood from fungal attack over time, with weight losses in the range of 8.49% to 8.94% after 16 weeks, versus 24.79% weight loss in the control (untreated) samples. This was confirmed by SEM and optical microscopy images, which showed a noticeably higher cell wall degradation in control samples than in samples treated with silver nanoparticles. On the other hand, the efficacy of the treatments based on chitosan oligomers and propolis gradually decreased over time, which would be a limiting factor for their application as wood preservatives. The nanometal-based approach is thus posed as the preferred choice for the industrial treatment of poplar wood aimed at wood-based engineering products (plywood, laminated veneer lumber, cross-laminated timber, etc.).
000084367 536__ $$9info:eu-repo/grantAgreement/ES/UZ/UZ2019-TEC-07
000084367 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000084367 590__ $$a2.221$$b2019
000084367 591__ $$aFORESTRY$$b17 / 68 = 0.25$$c2019$$dQ1$$eT1
000084367 592__ $$a0.652$$b2019
000084367 593__ $$aForestry$$c2019$$dQ1
000084367 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000084367 700__ $$aSilva Castro, Iosody
000084367 700__ $$aPonce Herrero, Laura
000084367 700__ $$0(orcid)0000-0003-2713-2786$$aMartín Ramos, Pablo$$uUniversidad de Zaragoza
000084367 700__ $$aMartín Gil, Jesús
000084367 700__ $$aAcuña Rello, Luis
000084367 7102_ $$15011$$2500$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cArea Ingeniería Agroforestal
000084367 773__ $$g10, 10 (2019), 885 [10 pp.]$$pForests$$tForests$$x1999-4907
000084367 8564_ $$s1278930$$uhttps://zaguan.unizar.es/record/84367/files/texto_completo.pdf$$yVersión publicada
000084367 8564_ $$s94657$$uhttps://zaguan.unizar.es/record/84367/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000084367 909CO $$ooai:zaguan.unizar.es:84367$$particulos$$pdriver
000084367 951__ $$a2020-07-16-09:33:37
000084367 980__ $$aARTICLE