75947 20190709135736.0 doi 10.3390/coatings8120415 sideral 108842 ART-2018-108842 eng Silva Castro, Iosody Chitosan-based coatings to prevent the decay of Populus spp. wood caused by Trametes versicolor 2018 Access copy available to the general public Unrestricted Chitosan and chitosan oligomers are receiving increasing attention due to their antimicrobial properties. In the present study, they were assayed as a preventive treatment against white-rot decay of Populus wood (very important in economic and environmental terms), caused by Trametes versicolor fungus. Their capacity to incorporate different chemical species into the polymer structure with a view to improving their anti-fungal activity was also assessed by mixing oligo-chitosan with propolis and silver nanoparticles. The minimum inhibitory concentration of medium-molecular weight chitosan (MMWC), chitosan oligomers (CO), propolis (P), nanosilver (nAg), and their binary and ternary composites against T. versicolor was determined in vitro. Although all products exhibited anti-fungal properties, composites showed an enhanced effect as compared to the individual products: 100% mycelial growth inhibition was attained for concentrations of 2.0 and 0.2 mg·mL−1 for the CO-P binary mixture, respectively; and 2 µg·mL−1 for nAg in the ternary mixture. Subsequently, MMWC, CO, CO-P and CO-P-nAg composites were tested on poplar wood blocks as surface protectors. Wood decay caused by the fungus was monitored by microscopy and vibrational spectroscopy, evidencing the limitations of the CO-based coatings in comparison with MMWC, which has a higher viscosity and better adhesion properties. The usage of MMWC holds promise for poplar wood protection, with potential industrial applications. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.33 2018 MATERIALS SCIENCE, COATINGS & FILMS 7 / 20 = 0.35 2018 Q2 T2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Casado Sanz, Milagros Alonso Cortés, Agustín L. (orcid)0000-0003-2713-2786 Martín-Ramos, Pablo Universidad de Zaragoza Martín Gil, Jesús Acuña Rello, Luis 5011 500 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Area Ingeniería Agroforestal 8, 12 (2018), 415 [15 pp.] Coatings COATINGS 2079-6412 1634100 http://zaguan.unizar.es/record/75947/files/texto_completo.pdf Versión publicada 108066 http://zaguan.unizar.es/record/75947/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:75947 articulos driver 2019-07-09-13:09:53 ARTICLE