Listar Microbiología por autor "fb566ced-ccd3-458f-b356-30c4729b5b45"
Mostrando ítems 1-5 de 5
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A Novel Green Chemistry Method for Nonaqueous Extraction and High-Performance Liquid Chromatography Detection of First-, Second-, and Third-Generation Tetracyclines, 4-Epitetracycline, and Tylosin in Animal Feeds
Granados Chinchilla, Fabio; Sánchez González, Jorge Manuel; García Santamaría, Fernando; Rodríguez Sánchez, César (2012-06)Although tetracyclines and macrolides are common additives for animal nutrition, methods for their simultaneous determination in animal feeds are nonexistent. By coupling an organic extraction and solid-phase extraction ... -
A single exposure of sediment sulphate-reducing bacteria to oxytetracycline concentrations relevant to aquaculture enduringly disturbed their activity, abundance and community structure
Fernández Montes de Oca, María Laura; Granados Chinchilla, Fabio; Rodríguez Sánchez, César (2015-05)Aim: although feed medicated with antibiotics is widely used in animal production to prevent and treat bacterial infections, the effect of these drugs on nontarget anaerobic bacteria is unknown. We aimed to clarify whether ... -
Bioavailability of in-feed tetracyclines is influenced to a greater extent by crude protein rather than calcium
Granados Chinchilla, Fabio; Rodríguez Sánchez, César (2014-12)Feed is a common vehicle for tetracycline administration in animal farming. However, veterinarians and farmers often overlook that common feed components, such as proteins and calcium, may interact with these drugs and ... -
Distribution, stability, and protein interactions of Aflatoxin M1 in fresh cheese
Chavarría Molina, Guadalupe; Molina Alvarado, Andrea; Leiva Gabriel, Astrid; Méndez Hernández, Geovanna; Wong González, Eric; Cortés Muñoz, Marianela; Rodríguez Sánchez, César; Granados Chinchilla, Fabio (2017)Aflatoxin M1 (AFM1), a metabolite resulting from the hepatic metabolism of aflatoxin B1, is a potential carcinogen that can be found in milk, cheese, and others dairy products. In this work, we aimed to elucidate the ... -
Unravelling a vicious circle: animal feed marketed in Costa Rica contains irregular concentrations of tetracyclines and abundant oxytetracycline-resistant Gram-positive bacteria
Granados Chinchilla, Fabio; Alfaro Cascante, Margarita; Chavarría Molina, Guadalupe; Rodríguez Sánchez, César (2014-04)Diverse tetracyclines are used to prevent and control bacterial infections in livestock and farmed fish. These drugs are administered through the diet, but farmers seldom check whether feed contains antibiotic-resistant ...