The survival of listeria monocytogenes in yoghurt and ice cream
Journal Title: Journal of Veterinary Medical Research - Year 2017, Vol 24, Issue 2
Abstract
The ability of L. monocytogenes as an opportunistic pathogen of humans and animals, to survive and grow under various adverse environmental conditions, makes it a potential health hazard after the consumption of contaminated dairy products, it often implicated in several outbreaks of listeriosis. This study was conducted to investigate the survival of L. monocytogenes strain (NCTC13372) when inoculated with a population level of 6.95 log cfu/g and 7.64 log cfu/g and stored at 4ºC for 15 days and 3 months at -18ºC for yoghurt and ice cream respectively. The obtained results indicated that complete inactivation of the tested organism wasn’t achieved till the end of storage periods and the inoculated L. monocytogenes was survived in both yoghurt and ice cream throughout the trial. It is concluded that in the dairy industry, we cannot rely upon either fermentation process and storage at refrigerating temperature or upon storage at freezing temperature during yoghurt and ice cream manufacturing to control L. monocytogenes pathogen in order to provide safe products for consumption
Authors and Affiliations
Saadia H. El shinaway, Arafa M. S. Meshref, Mohamed M. A. Zeinhom, DaliaA. A. Hafez
Keywords
Related Articles
- EP ID EP658366
- DOI -
- Views 229
- Downloads 0
Evaluation of the antioxidant protective effect of oxytocin and silymarin against gentamicin-induced nephrotoxicity in rat
Gentamicin is an effective aminoglycoside antibiotic against severe infections. In spite of inducing nephrotoxicity and oxidative damage, gentamicin is used clinically due to its wide spectrum of activities against Gram...
Bovine Parapoxvirus: Isolation and pathogenicity studies
A disease characterized by papules, nodules, vesicles, pustules and ulcers on teats and udder as well as drastic drop in milk production was seen among a cattle farm in Fayoum Governorate, Egypt. A virus was isolated by...
EFFECT OF VIRGIN OLIVE OIL SUPPLEMENTATION ON SOME HEMATOLOGIC AND THYROID HORMONES, LEVELS IN RATS
The aim of the present study is to investigate the effect of virgin olive oil on some blood parameters in male Albino rats. Thirty male Sprague Dawley rats, (90-110 g), were used in the present study and were divided int...
Epidemiology of viral components causing respiratory problems in broilers in six Egyptian Governorates
Infectious bronchitis (IB), Newcastle disease (ND) and Avian influenza (AI) are highly contagious and the most economically important diseases of the poultry affecting the respiratory tract and causing economic losses in...
Phenotypic and genotypic characterization of oxidase positive Gram negative bacilli isolated from broiler chickens.
The current work aimed to study the phenotypic and genotypic characters of oxidase positive Gram negative bacterial pathogens recovered from different pathological lesions in broiler chickens. Samples were taken from 200...