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Listar por autor "Nagel, Orlando Guillermo"

Mostrando ítems 1-8 de 8

Efecto de los tratamientos térmicos sobre la actividad antimicrobiana de tetraciclinas en leche

Zorraquino Lozano, Miguel Angel; Althaus, Rafael Lisandro; Nagel, Orlando Guillermo; Roca Marugán, Marta Isabel; Molina Pons, Mª Pilar (Universidad Nacional del Litoral, 2010)

[EN] The presence of antibiotic residues in milk is not only a potential consumer risk, but may also cause serious problems in the fermentation processes used in the dairy industry. The aim of the study was, therefore, ...
Effect of antibiotics on the germination and root elongation of Argentine intensive crops

Eluk, Dafna; Nagel, Orlando Guillermo; Zimmermann, Jeremias; Molina Pons, Mª Pilar; Althaus, Rafael Lisandro (Springer-Verlag, 2016)

[EN] For small cheese-making factories, with no effluent treatment plants, whey can be a serious problem and the landfarming technique represents an alternative for its disposal. However, whey may contain antibiotic residues ...
Microbial System for Identification of Antibiotic Residues in Milk

Nagel, Orlando Guillermo; Molina Pons, Mª Pilar; Althaus, Rafael Lisandro (Elsevier, 2011-09)

[EN] The aim of this study was to evaluate the ResScreen (R) microbiological system for the identification of antibiotic residues in milk. This microbiological system consists of two methods, the BT (betalactams and ...
Microbiological method using Bacillus megaterium with fusidic acid for detection of macrolides in milk

Tumini, M.; Nagel, Orlando Guillermo; Molina Pons, Mª Pilar; Althaus, Rafael Lisandro (Czech Academy of Agricultural Sciences, 2016)

[EN] The microbiological method to attain a sensitive detection of macrolides using Bacillus megaterium in agar medium with fusidic acid was designed. To this aim, Mueller-Hinton medium fortified with glucose at pH 8.0, ...
Novel bioassay using Bacillus megaterium to detect tetracyclines in milk

Tumini, M.; Nagel, Orlando Guillermo; Molina Pons, Mª Pilar; Althaus, Rafael Lisandro (Elsevier, 2016)

[EN] Tetracyclines are used for the prevention and control of dairy cattle diseases. Residues of these drugs can be excreted into milk. Thus, the aim of this study was to develop a microbiological method using Bacillus ...
Novel microbiological system for antibiotic detection in ovine milk

Nagel, Orlando Guillermo; Beltrán Martínez, Mª Carmen; Molina Pons, Mª Pilar; Lisandro Althaus, Rafael (Elsevier, 2012-01-01)

[EN] This article presents a microbiological system composed of a " BT" bioassay (Beta-lactams and Tetracyclines) and a " QS" bioassay (Quinolones and Sulfonamides). The " BT" bioassay contains spores of Geobacillus ...
Use chemometric techniques in the optimization of a specific bioassay for betalactams in milk

Nagel, Orlando Guillermo; Molina Pons, Mª Pilar; Althaus, Rafael Lisandro (Wiley, 2012-01)

Aims: A microbiological bioassay using Geoacillus stearothermophilus was optimized to detect betalactams at concentrations near to the Maximum Residue Limits (MRLs), with low cross-specificity for tetracycline. Methods and ...
Use of Chemometric techniques to design a microbiological method for sulfonamide detection in milk

Nagel, Orlando Guillermo; Molina Pons, Mª Pilar; Althaus Bellon, Rafael Lisandro (Czech Academy of Agricultural Sciences, 2013)

[EN] We proposed an experimental design of a microbial bioassay of dichotomous response (positive or negative) using Bacillus subtilis BGA for the detection of sulfonamide residues. In the first stage, the bioassay response ...