RT journal article
T1 Assessing the potential of ultraviolet irradiation for inactivating waterborne fungal spores: kinetics and photoreactivation studies
A1 Duque-Sarango, Paola
A1 Delgado-Armijos, Nicole
A1 Romero Martínez, Leonardo
A1 Pinos-Vélez, Verónica
A2 Biología
A2 Tecnologías del Medio Ambiente
K1 aspergillus
K1 flow-through UV-C reactor
K1 fungal spores
K1 penicillium
K1 photoreactivation
K1 ultraviolet disinfection
AB Ultraviolet disinfection has been extensively studied in recent years, especially in bacteria; however, there are still insufficient studies in fungal spores. Moreover, most studies use static batch reactors instead of continuous flow reactors, which are used mainly at the industrial scale. In the present work, the inactivation and reactivation characteristics of two species of filamentous fungi were studied using a single-pass flow-through UV-C reactor (FTR). For this purpose, Aspergillus niger and Penicillium sp. spores were suspended in water and circulated through the reactor at different UV-C doses. The effects on inactivation and reactivation after 24 in either light or dark conditions were studied. The two fungal strains studied show different UV-C treatment resistance and damage repair capacity. With the experimented FTR system, an inactivation efficiency of up to 2 log units (99% removal) was achieved with doses of 220.1 ± 24.3  (Formula presented.) in the case of Aspergillus niger and 123.8 ± 6.3  (Formula presented.) in the case of Penicillium sp. The effect of dark repair is negligible, while the photoreactivation process is relevant in the case of Penicillium sp., since D2 increased by 53.8% just after UV-C exposure due to photoreactivation. In general, A. niger is more UV-C resistant than Penicillium sp.; however, the latter has a greater capacity to photoreactivate.
PB Frontiers Media SA
SN 2296-665X
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32535
UL http://hdl.handle.net/10498/32535
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026