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Listar por autor "Althaus, Rafael Lisandro"

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Analytical strategy for the detection of antibiotic residues in milk from small ruminants

Beltrán Martínez, Mª Carmen (Universitat Politècnica de València, 2015-10-08)

In Mediterranean countries, sheep and goat’s milk production has traditionally been destined for the manufacture of cheese, often as raw milk. Cheese quality is closely related to milk composition but also to hygienic ...
Analytical strategy for the detection of antibiotic residues in sheep and goat's milk

Beltrán Martínez, Mª Carmen; Althaus, Rafael Lisandro; MOLINA CASANOVA, ANA MARIA; Berruga Fernandez, Maria Isabel; Molina Pons, Mª Pilar (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2015-03)

[EN] The use of antibiotics to treat mastitis and other infectious diseases in dairy sheep and goats is a widespread practice nowadays that can, when not properly applied, result in the contamination of the milk supply. ...
Antimicrobial activity in cheese whey as an indicator of antibiotic drug transfer from goat milk

Giraldo-Gómez, Jennifer; Althaus, Rafael Lisandro; Beltrán Martínez, Mª Carmen; Molina Pons, Mª Pilar (Elsevier, 2017)

[EN] Raw goat milk spiked with antibiotics was coagulated with rennet, the whey separated and the transfer of 18 antibiotics from the milk to the whey was evaluated by estimating antimicrobial activity of the whey using ...
Control and prevention of antibiotic residues and contaminants in sheep and goat s milk

Berruga Fernandez, Maria Isabel; Molina Casanova, Ana María; Althaus, Rafael Lisandro; Molina Pons, Mª Pilar (Elsevier, 2016)

[EN] The use of veterinary drugs to treat mastitis and other pathologies in dairy sheep and goats is a usualpractice in current production systems. The risk of antibiotic residues in milk on farms is high if goodfarming ...
Detection of antibiotics in goat's milk; effect of detergents on the response of microbial inhibitor tests

Romero Rueda, Tamara; Beltrán Martínez, Mª Carmen; Lisandro Althaus, Rafael; Molina Pons, Mª Pilar (Cambridge University Press (CUP), 2014-08)

[EN] The aim of the study was to evaluate the interference of acid and alkaline detergents employed in the cleaning of milking equipment of caprine dairy farms on the performance of microbial tests used in antibiotic control ...
Drug residues in goat s milk after to the prophylactic use of antibiotics in intravaginal sponges for estrus synchronization

Romero Rueda, Tamara; Balado, J.; Althaus, Rafael Lisandro; Beltrán Martínez, Mª Carmen; Molina Pons, Mª Pilar (American Dairy Science Association, 2016)

[EN] The aim of this study was to determine whether the prophylactic use of antibiotics in intravaginal sponges used for estrus synchronization in goats may result in the presence of inhibitors in milk and, therefore, of ...
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 ...
Effect of storage and preservation of milk samples on the response of microbial inhibitor tests

Borràs Llopis, Milagro; Roca Marugán, Marta Isabel; Lisandro Althaus, Rafael; Molina Pons, Mª Pilar (Cambridge University Press (CUP): STM Journals - No Cambridge Open, 2013-11)

The aim of this study was to evaluate the effect of storage time (4 °C) on milk samples and the use of azidiol as preservative on the results of microbial inhibitor tests used to detect antimicrobials in milk. For this ...
Evaluation of the Charm maximum residue limit beta-lactam and tetracycline test for the detection of antibiotics in ewe and goat milk

Beltrán Martínez, Mª Carmen; Romero Rueda, Tamara; Althaus, Rafael Lisandro; Molina Pons, Mª Pilar (American Dairy Science Association, 2013-05)

The Charm maximum residue limit P-lactam and tetracycline test (Charm MRL BLTET; Charm Sciences Inc., Lawrence, MA) is an immunoreceptor assay utilizing Rapid. One-Step Assay lateral flow technology that detects P-lactam ...
Interference of non-specific detergents in microbial inhibitor test results for screening antibiotics in goat s milk

Romero Rueda, Tamara; Beltrán Martínez, Mª Carmen; Althaus, Rafael Lisandro; Molina Pons, Mª Pilar (Taylor & Francis, 2016)

[EN] Cleaning and disinfection of dairy equipment is essential to ensure the hygienic quality of milk. Occasionally, some farmers use washing-up liquids and disinfectants for home use, especially when cleaning procedures ...
Interferences on microbial inhibitor tests related to ivermectin treatment in lactating dairy goats

Romero Rueda, Tamara; Moya, V.J.; Fernández Martínez, Nemesio; Althaus, Rafael Lisandro; Reybroeck, Wim; Molina Pons, Mª Pilar (Cambridge University Press, 2016)

[EN] This Research Communication reports interferences related to the administration of ivermectin in lactating dairy goats on the response of microbial tests for screening antibiotics in milk. Twenty-eight Murciano-Granadina ...
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 ...
Performance of current microbial tests for screening antibiotics in sheep and goat milk

Beltrán Martínez, Mª Carmen; Berruga Fernandez, Maria Isabel; Molina Casanova, Ana; Lisandro Althaus, Rafael; Molina Pons, Mª Pilar (Elsevier, 2015-02)

[EN] The detection capability (CC beta) of some microbial screening tests currently available was calculated for sheep and goat milk in accordance with Commission Decision 657/2002/EC. The CC beta was at or below the maximum ...
Termoestabilidad de sustancias antimicrobianas en la leche

Roca Marugán, Marta Isabel (Universitat Politècnica de València, 2008-09-10)

La presencia de residuos de sustancias antimicrobianas en la leche supone un riesgo toxicológico para la salud pública así como un problema tecnológico para la industria láctea. La información disponible sobre la ...
Thermodynamic analysis of the thermal stability of sulphonamides in milk using liquid chromatography tandem mass spectrometry detection

Roca Marugán, Marta Isabel; Althaus, Rafael Lisandro; Molina Pons, Mª Pilar (Elsevier, 2013-01-15)

[EN] The present study investigates the kinetics of the degradation of eight sulphonamides in skimmed milk when heated at 60, 70, 80, 90 and 100 degrees C using an LC-MS/MS methodology. To determine the thermal stability ...
Transfer of antibiotics from goat's milk to rennet curd and whey fractions during cheese-making

Giraldo, Jennifer; Igualada, Carmen; Cabizza, Roberto; Althaus, Rafael Lisandro; Beltrán Martínez, Mª Carmen (Elsevier, 2022-10-30)

[EN] The transfer of 35 antibiotics from milk to curd and whey was evaluated. Cheeses were produced at laboratory scale, from antibiotic-free goat's milk spiked with different antibiotic concentrations between 0.25 and 4 ...