Effect of the presence of colostrum on microbial screening methods for antibiotic detection in goats’ milk

Romero, T.; Beltrán, M.C.; Pérez-Baena, I.; Rodríguez, M.; Molina, M.P.

doi:10.1016/j.smallrumres.2014.07.007

Cited by 12 publications

(10 citation statements)

References 22 publications

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“…Also, the presence of substances in milk related to some farming practices may also lead to "false-positive" results in microbial inhibitor tests. Thus, the presence of colostrum in sheep (Beltrán et al, 2010) and also goat's milk (Romero et al, 2014a) may produce anomalous results. The in vitro presence of antiparasitic substances such as closantel or diazinon in goat's milk produced false-positive results (Romero et al, 2015).…”

Section: Methods To Control Antibiotic Residues In Sheep and Goat's Milkmentioning

confidence: 99%

“…With regard to receptor-based tests (rapid methods),Beltrán et al (2013Beltrán et al ( , 2014aBeltrán et al ( , 2014b) studied the characteristics of several specific methods (Charm MRL BLTET, Betastar Combo, SNAP Betalactam, SNAP Tetracycline and TwinsensorBT) to analyse beta-lactams and/or tetracyclines in sheep's and goat's milk (Table 2). The table shows that most substances detected were equal to or below MRLs, presenting also a high specificity for individual samples from sheep and goats with the exception of the Twinsensor test in which false-positives results incremented notably in the case of milk produced at the end of the lactation period.…”

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confidence: 99%

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Control and prevention of antibiotic residues and contaminants in sheep and goat’s milk

Berruga

Molina

Althaus

et al. 2016

Small Ruminant Research

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The use of veterinary drugs to treat mastitis and other pathologies in dairy sheep and goats is a usual practice in current production systems. The risk of antibiotic residues in milk on farms is high if good farming practices are not applied, in this sense control measures must be implemented to prevent drugs residues from entering the food chain. But there are others compounds that may contaminate milk via the environment, water or animal feed, such as mycotoxins that are one of the most harmful contaminants given their negative effects on consumer health. This work presents the problems that arise when residues and contaminants are present in sheep and goat's milk. It also addresses the causes and the consequences of their presence, and the main measures of prevention and control required to guarantee milk that is safe for consumers and of high quality for the dairy industry.

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Section: Methods To Control Antibiotic Residues In Sheep and Goat's Milkmentioning

confidence: 99%

mentioning

confidence: 99%

Control and prevention of antibiotic residues and contaminants in sheep and goat’s milk

Berruga

Molina

Althaus

et al. 2016

Small Ruminant Research

Self Cite

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“…Nowadays, the food safety administration and research towards commercial dairy products is primarily concentrated on the residues detection of microbial contaminants (Jin et al, 2013), heavy metal (Ping, Wang, Wu, & Ying, 2014), pesticide (Shaker & Elsharkawy, 2015) or antibiotics (Romero, Beltr an, P erez-Baena, Rodríguez, & Molina, 2014), and little is on the milk of steroid hormone (Sciascia, Pacheco, & McCoard, 2013;Zheng, Zou, Li, & Machesky, 2013). Classical analytical methods for the determination of E2 in powdered milk were mainly gas chromatography mass spectrometry (GCeMS) (Chen et al, 2014), high performance liquid chromatography (HPLC) (Shi et al, 2011), and liquid chromatography-mass spectrometry LCeMS (Pape-Zambito, Roberts, & Kensinger, 2010;Zhao, Lin, Li, & Ying, 2006).…”

Section: Introductionmentioning

confidence: 99%

Establishment of a lateral flow colloidal gold immunoassay strip for the rapid detection of estradiol in milk samples

Yang

Wang

Song

et al. 2015

LWT - Food Science and Technology

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“…However, they are nonspecific for antimicrobial agents and may be affected by certain substances in raw milk that are able to inhibit the microbial growth (such as colostrum (Romero et al 2014b), naturally occurring inhibitors (Carlsson et al 1989) or antiparasitic agents (Romero et al 2015)), causing non-compliant results.…”

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confidence: 99%

Interference of non-specific detergents in microbial inhibitor test results for screening antibiotics in goat's milk

Romero

Beltrán

Althaus

et al. 2016

Journal of Applied Animal Research

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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 are carried out manually. Residues of detergents and disinfectants in milk may interfere with the response of microbial inhibitor tests used for screening antibiotics in milk. Therefore, the aim of this study was to evaluate the interference of non-specific detergents in screening tests (BRT MRL; Delvotest SP-NT MCS; Eclipse 100) for goat's milk. Twelve replicates of eight concentrations of five washing-up liquids (0-1%) and one disinfectant (0-1%) were analysed. The results showed that the presence of washing-up liquids at concentrations of ≥1 ml/l leads to positive results in microbial tests. In particular, the product containing sodium laureth sulphate and ethanol produced the largest number of positive outcomes. The presence of disinfectant based on sodium hypochlorite did not affect the test response. The detection capabilities of microbial inhibitor tests for penicillins were also studied in milk with and without cleaning products, calculating the dose-response curve with eight concentrations of amoxicillin, ampicillin, benzylpenicillin and cloxacillin, respectively. The detection limits of the screening tests for penicillins were not modified substantially by the cleaning product based on sodium laureth sulphate and ethanol. Residues of cleaning agents in milk can be avoided when specific detergents and disinfectants for milking equipment are used and good cleaning practices are applied. ARTICLE HISTORY

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Effect of the presence of colostrum on microbial screening methods for antibiotic detection in goats’ milk

Cited by 12 publications

References 22 publications

Control and prevention of antibiotic residues and contaminants in sheep and goat’s milk

Control and prevention of antibiotic residues and contaminants in sheep and goat’s milk

Establishment of a lateral flow colloidal gold immunoassay strip for the rapid detection of estradiol in milk samples

Interference of non-specific detergents in microbial inhibitor test results for screening antibiotics in goat's milk

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