Are we closer to understanding why viable cells of <i>Mycobacterium avium</i> subsp. <i>paratuberculosis</i> are still being reported in pasteurised milk?

Mullan, Michael

doi:10.1111/1471-0307.12617

Cited by 28 publications

(19 citation statements)

References 56 publications

(106 reference statements)

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“…In this view, the number of deaths related to melioidosis is comparable to mortality caused by measles (95,600 per year) and higher than the death rate from leptospirosis (50,000 per year) or dengue (9,100-12,500 per year). Pathogenic microorganisms are commonly found in cheeses (Mendonça et al, 2019;Cunha-Neto et al, 2020) and milk (Mullan, 2019).…”

Section: Identification Of Psychotropic Bacteriamentioning

confidence: 99%

Psychrotrophic bacteria in Brazilian organic dairy products: identification, production of deteriorating enzymes and biofilm formation

et al. 2021

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The psychrotrophic bacteria count and the profile of Gram-negative bacteria present in commercial Brazilian organic dairy products (27 samples, pasteurized whole milk, Minas Frescal cheese, and yoghurt, equally distributed) as well as the biofilmproducing capacity and the production of deteriorating enzymes were investigated. Most of the samples (59%) presented psychrotrophic bacteria counts higher than 4 log CFU/g, indicating problems in the microbiological quality of the products. The identification of Gram-negative bacteria revealed the presence of micro-organisms that can be potentially harmful (39.4% Acinetobacter baumanii/calcoaceticus, 23.2% Burkoderia pseudomallei, 10.1% Halfnia alvei) and/or deteriorating microorganisms (6.1% Pseudomonas aeruginosa) with the capacity of producing proteases (36.4%), lecithinases (41.4%), and lipases (4%). Roughly, 68.7% of micro-organisms were non-producers of biofilms, 28.3% were medium biofilm producers, and 3.0% were high biofilm producers. The findings suggest there are problems related to the good practices of obtaining organic milk and in the manufacture of dairy products.

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Section: Identification Of Psychotropic Bacteriamentioning

confidence: 99%

Psychrotrophic bacteria in Brazilian organic dairy products: identification, production of deteriorating enzymes and biofilm formation

et al. 2021

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“…As Atkins (2008) shows, negative consumer reactions to zoonotic food hazards have a long and notable history in the UK, and similar impacts have been shown across Europe and indeed globally (Bánáti, 2011). Mullan (2019) cautions that formal international recognition of MAP as a human pathogen is more likely than not, and this line of argument is increasingly evident in the scientific literature, and sometimes without equivocation (e.g. Singh et al, 2016;Monif, 2018;Dow and Sechi, 2019;Zarei-Kordshouli et al, 2019).…”

Section: Discussionmentioning

confidence: 77%

"They've got to be testing and doing something about it": Farmer and veterinarian views on drivers for Johne’s disease control in dairy herds in England

Robinson

2020

Preventive Veterinary Medicine

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There needs to be an understanding of the reasons why key stakeholders engage in disease control efforts if disease is to be successfully and sustainably controlled. It is increasingly recognised within veterinary epidemiology and policy making in animal health that these 'people factors' are important influences on the success or otherwise of animal disease control programmes. Research methodologies adopted from the social sciences offer ways to understand this important dimension, through investigating the attitudes and opinions of the key actors involved. The study reported in this paper, based on qualitative interview research, investigates the views of dairy farmers and cattle veterinarians on the drivers and incentives for controlling Johne's disease in English dairy herds. Twenty semi-structured interviews involving 17 dairy farmers and seven veterinarians were conducted in two dairyintensive regions of England. The findings demonstrate the varied influences of veterinary advice and encouragement; appreciation of the economic cost of the disease at herd level; a voluntary national control plan; and fear of a future consumer food scare as the main reasons to engage in Johne's disease control on dairy farms. The study demonstrates how a combination of a voluntary industry-led control scheme, compulsory participation through retailer and processor contractual requirements, and threats of reputational harm and market loss have strongly influenced farmer and veterinary behaviour in relation to Johne's control without statutory involvement. The findings illustrate the importance of considering the political economy and societal impact of animal disease.

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“…Pasteurisation of milk is considered effective to reduce pathogenic bacteria. However, there is increasing interest in on-farm sale of raw milk and pathogens were even detected in pasteurised milk, either due to heat-resistance or post-pasteurisation contamination (Mullan 2019;Pannella et al 2019;Berge and Baars 2020). L. monocytogenes and Staphylococcus aureus are the major pathogens associated with consumption of raw milk and raw milk products and outbreaks occur regularly (Fusco et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Growth interferences between bacterial strains from raw cow's milk and their impact on growth of Listeria monocytogenes and Staphylococcus aureus

Hahne

Lipski

2021

J Appl Microbiol

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Aims: The purpose of this study was to detect growth enhancing or inhibiting activity between bacterial populations from raw milk under different conditions (temperature, medium). Methods and Results: The interference of twenty-four raw milk isolates on growth of each other and on Listeria monocytogenes, Staphylococcus aureus, Bacillus subtilis and Micrococcus luteus was screened by drop assay and for selected pairs in co-cultivation experiments. By drop assay, antibacterial activity was observed for 40% of the strains. 30% of the strains showed growthenhancing activity on other strains. Most of the isolates were well adapted to cold temperatures and showed consistent or even increased inhibiting or enhancing effects on growth of other strains at 10°C. The growth of Listeria monocytogenes DSM 20600 T and Staphylococcus aureus DSM 1104 T was significantly (P<0.05) reduced in co-cultivation with Pseudomonas protegens JZ R-192. Conclusions: Growth interferences between bacterial populations have an impact on the structure of raw milk microbiota, especially when it develops under cold storage and it may have an effect on the prevalence of certain foodborne pathogens. Significance and Impact of the Study: This study demonstrates growth-inhibiting and also growth-enhancing interactions between raw milk bacteria, which must be considered when predicting bacterial growth and spoilage in food. A Ps. protegens strain isolated from raw milk showed an antagonistic effect on growth of L. monocytogenes in refrigerated raw milk.

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Are we closer to understanding why viable cells of Mycobacterium avium subsp. paratuberculosis are still being reported in pasteurised milk?

Cited by 28 publications

References 56 publications

Psychrotrophic bacteria in Brazilian organic dairy products: identification, production of deteriorating enzymes and biofilm formation

Psychrotrophic bacteria in Brazilian organic dairy products: identification, production of deteriorating enzymes and biofilm formation

"They've got to be testing and doing something about it": Farmer and veterinarian views on drivers for Johne’s disease control in dairy herds in England

Growth interferences between bacterial strains from raw cow's milk and their impact on growth of Listeria monocytogenes and Staphylococcus aureus

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