Browsing by Subject "Chloroform"

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    Isolation and characterization of FS01, a lytic bacteriophage infecting Salmonella typhimurium
    (Universidad de Murcia. Servicio de Publicaciones, 2025) Guillén-Vásquez, Abraham; Zumaeta, Kattya; Talledo, Miguel; Sin departamento asociado
    Salmonella contamination represents a health and economic problem. This study isolated and characterized a lytic bacteriophage, FS01, active against S. typhimurium. FS01 showed a MOI of 1, anadsorption rate of 1.9x10-9 mL/min, and a growth curve with an eclipse period of 10 minutes, a latency period of 15 minutes, and a burst size of 10 virions per cell. It has an icosahedral capsid (64.4 nm) and a flexible tail (182.2 nm), suggestive of Siphoviridae family affiliation, with a narrow host range. It is thermally stable between 40–60 ºC for 30 minutes, viable within a pH range of 6–9, and sensitive to chloroform and UV light. FS01 inhibited bacterial growth starting at 3 hours. FS01 exhibits properties of a promising biocontrol agent for decontaminating food and surfaces.
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    Removal assessment of disinfection by-products (DBPs) from drinking water supplies by solar heterogeneous photocatalysis: A case study of trihalomethanes (THMs).
    (Elsevier, 2022) Pérez-Lucas, Gabriel; Martínez-Menchón, Marina; Vela, Nuria; Navarro, Simón; Química Agrícola, Geología y Edafología
    Solar heterogeneous photocatalysis was used to remove trihalomethanes (THMs) from drinking water. THMs, mainly trichloromethane (TCM), tribromomethane (TBM), bromodichloromethane (BDCM) and dibromochloromethane (DBCM) are one of the main class of disinfection by-products (DBPs). THMs were determined by HSGC-MS with detection limits (LODs) ranging from 0.5 μg L−1 to 0.9 μg L−1 for TCM and BDCM, respectively. Results show that a great proportion of THMs present in water are finally transferred to air as a result of their high volatility in the order TCM > BDCM > DBCM > TBM. The use of band-gap semiconductor materials (TiO2 and mainly ZnO) used as photocatalysts in combination with Na2S2O8 as electron acceptor and sulfate radical anion (SO4•-) generator enhanced the photooxidation of all THMs as compared to photolytic test. The time required for 50% of THMs to disappear (DT50) from water calculated for the most effective treatment (ZnO/Na2S2O8) were 12, 42, 57 and 61 min for TCM, TBM, BDCM, and DBCM, respectively. Therefore, solar heterogeneous photocatalysis can be considered as an interesting strategy for THMs removal, especially in sunny areas like Mediterranean basin.