Examinando por Autor "Bermúdez Medina, Andrea L."

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  • Publicación
    Acceso abierto
    Producción de paneles aislantes de celulosa con propiedades antifúngicas en la ciudad de Bucaramanga, Santander
    (Bucaramanga : Universidad de Santander, 2018, 2018-12-12) Bermúdez Medina, Andrea L.; Gualdrón Díaz, Amparo; Moreno Yáñez, Paalo-Andrea
    The growth of fungi in wet buildings is a big problem in the world that has adverse effects on the inhabitants and buildings. The objective of this study was to evaluate the growth of environmental molds in cellulose panels made of recycled paper, soy protein, boric acid and borax, as a result it was possible to isolate 6 genera of fungi from indoor environments with presence of humidity; four of them had the capacity to use cellulose as the only carbon source in humid chambers, which were molecularly characterized by amplifying ITS1, ITS2 and 5.8S rRNA regions by PCR and sequencing of products by the first extension method (Sanger) (Chaetomium murorum , Aspergillus niger, Penicillium crustosum, Stachybotrys chartarum). A central composite design (CCD) was carried out to study the influence of the percentage of components of the panel against the four strains selected, the results were taken at 7 and 28 days of the experiment at a temperature of 30 ° C and relative humidity 90 ± 4% based on that described by ASTM C1338-14, the different treatments in cellulose panels proved to be sufficient to inhibit the growth of cellulolytic fungi, on the other hand in conventional panels; Drywall material showed fungal growth of Aspergillus niger and Stachybotrys chartarum.