title: Experimental and theoretical investigations of the adhesion time of Penicillium spores to cedar wood surface.
abstract: In this study, the adhesion of 4 Penicillium strains (Penicillium granulatum, Penicillium crustosum, Penicillium commune and Penicillium chrysogenum) on cedar wood was examined qualitatively and quantitatively by using the extended DLVO (XDLVO) approach and the environmental scanning electronic microscopy (ESEM) technique. A comparison between the XDLVO theories and the ESEM technique was also investigated. The adhesion tests revealed that P. chrysogenum was not able to adhere on the cedar wood substrata, as predicted by the XDLVO approach. We have also found by ESEM that the three Penicillium strains (P. granulatum, P. crustosum, P. commune) adhered on wood, as not predicted theoretically. Moreover, the time of adhesion (3 h and 24 h) was used not only to compare the capacity of adhesion according to contact time but also to explain the discrepancies between the XDLVO approach prediction and the adhesion experiments. A positive relationship between the XDLVO approach and adhesion experiments has been observed after 3h of adhesion. In contrast, a contradiction between the XDLVO predictions and the adhesion test results has been noted after 24h of adhesion of Penicillium strains to the wood surface.
authors.affiliation: Laboratoire de Biotechnologie Microbienne, Faculté des Sciences et Techniques de Fès-Saïs, Morocco.
authors.forename: Elabed
authors.initials: E
authors.lastname: Soumya
authors.forename: Saad Koraichi
authors.initials: SK
authors.lastname: Ibnsouda
authors.forename: Houari
authors.initials: H
authors.lastname: Abdellah
authors.forename: Latrache
authors.initials: L
authors.lastname: Hassan
mesh_terms: D000268:Adhesiveness; D028203:Cedrus / Q000382:microbiology* / Q000648:ultrastructure; D004583:Electrons; D008962:Models, Theoretical; D010407:Penicillium / Q000166:cytology / Q000502:physiology* / Q000648:ultrastructure; D013172:Spores, Fungal / Q000166:cytology / Q000502:physiology* / Q000648:ultrastructure; D013499:Surface Properties; D013816:Thermodynamics; D013997:Time Factors; D014934:Wood / Q000382:microbiology* / Q000648:ultrastructure
keywords: Cedar wood; Contact time; Environmental scanning electron microscopy; Prediction-extended DLVO