INVESTIGADORES
PESCUMA Micaela
artículos
Título:
Biogenic selenium nanoparticles with antifungal activity against the wood-rotting fungus Oligoporus pelliculosus
Autor/es:
PESCUMA, MICAELA; APARICIO, FRANCISCA; ZYSLER, ROBERTO; LIMA, ENIO; ZAPATA, CLAUDIA; MARFETAN, JORGE; VÉLEZ, M. LAURA; ORDOÑEZ, OMAR
Revista:
Biotechnological reports
Editorial:
Elsevier
Referencias:
Año: 2023 vol. 37
ISSN:
2215-017X
Resumen:
Selenium nanoparticles (SeNPs) have antimicrobial and antifungal activity. SeNPs using Se resistant bacteria is a low cost and eco-friendly technology. Fungal contamination of wood during drying is one of the main causes of economic losses in the wood industry. The bacterium <em>Delftia</em> sp. 5 resistance to Se and its ability to produce SeNPs able to inhibit the growth of the wood brown-rotting fungus <em>Oligoporus pelliculosus</em> was analyzed<em>.</em> The strain showed an optimal SeNPs production when selenite concentration was 160 mg L<sup>−1</sup>. The SeNPs were spherical with an average size 192.33 ± 8.6 nm and a zeta potential of -41.4 ± 1.3 nm. The SeNPs produced by <em>Delftia</em> sp. 5 (33.6 ± 0.1 mg L<sup>−1</sup> Se) inhibited the growth of <em>O. pelliculosus</em> in agar plates and in <em>Nothofagus pumilio</em> (Lenga) wood samples. <em>Delftia</em> sp. 5 SeNPs could be used for embedding lenga wood prior to drying for preventing the growth of the deteriorating fungi <em>O. pelliculosus</em>.
