Results: 9

Chemical characterization, antimicrobial and antioxidant activity of sugar-apple (Annona squamosa L. ) pulp extract

Rev. chil. nutr; 47 (2), 2020
Synthetic preservatives are widely present in processed foods, but most of them have carcinogenic potential, requiring the development of new natural alternatives such as fruit extracts, for microbial control. The objective of the study was to evaluate the chemical characterization, antioxidant, and anti...

Effect of thymol and environmental factors on growth and biofilm formation by Listeria monocytogenes

Thymol (2-isopropyl-5-methylphenol) is an aromatic monoterpene found in essential oils extracted from plants belonging to the Lamiaceae family, such as Thymus, Ocimum, Origanum, Satureja, Thymbra and Monarda genera. Growth and biofilm formation by Listeria monocytogenes CLIP 74902 were evaluate using thr...

Combined effect of bacteriocin produced by Lactobacillus plantarum ST8SH and vancomycin, propolis or EDTA for controlling biofilm development by Listeria monocytogenes

Rev. argent. microbiol; 50 (1), 2018
The Listeria monocytogenes strains selected in the present study exhibited similar behavior in biofilm formation, independently of the tested conditions (bacteriocin from L. plantarum ST8SH, vancomycin, propolis (a natural antimicrobial product) and EDTA (chelating agent)), individual or in associations....

Antimicrobial effect of copper surfaces on bacteria isolated from poultry meat

Braz. j. microbiol; 49 (supl.1), 2018
Abstract Poultry meat is a food product that usually carries high rates of microbial contamination, including foodborne pathogens. The poultry industry has established different systems to minimize these hazards. In recent years, extensive literature has demonstrated the antimicrobial activity of differe...

Inactivation of Listeria monocytogenes ATCC 7644 on fresh-cut tomato using nisin in combinations with organic salts

Braz. j. microbiol; 47 (3), 2016
ABSTRACT The inhibition of Listeria monocytogenes ATCC 7644 on fresh-cut tomato was investigated using nisin alone, and in combinations with organic salts. Nisin at a concentration of 5000 UI/mL was introduced alone or in combination with an organic salt (sodium citrate or sodium acetate each at 3 and 5 ...

Occurrence and antimicrobial resistance patterns of Listeria monocytogenes isolated from vegetables

Braz. j. microbiol; 47 (2), 2016
Abstract Although the consumption of fresh and minimally processed vegetables is considered healthy, outbreaks related to the contamination of these products are frequently reported. Among the food-borne pathogens that contaminate vegetables is Listeria monocytogenes, a ubiquitous organism that exhibits ...

Antimicrobial activity of chitosan coatings and films against Listeria monocytogenes on black radish

Rev. argent. microbiol; 48 (2), 2016
The antibacterial activity of chitosan coatings prepared with acetic or lactic acid, as well as of composite chitosan-gelatin films prepared with essential oils, was evaluated in fresh shredded black radish samples inoculated with Listeria monocytogenes ATCC 19115 and L. monocytogenes ATCC 19112 during s...

Isolamento de bactérias láticas produtoras de bacteriocina e sua aplicaçäo no controle de Listeria monocytogenes em lingüiça frescal

Duas cepas de bactérias láticas (Lactobacillus sake 2a e Leuconostoc sp 3c) foram isoladas de amostras de lingüiça frescal curadas cruas, adquiridas no comércio local. Essas cepas produziram substâncias antagonísticas ativas contra bactérias patogênicas veiculadas por alimentos. Foi demonstrada ...

Efecto de agregado de ácidos y temperatura sobre el desarrollo de listeria monocytogenes

Listeria monocytogenes es un microorganismos patógeno asociado a enfermedades de origen alimentario que puede crecer y sobrevivir a temperaturas de refrigeración y a pH bajos. Se analiza el efecto de pH 3.0-6.5 dado por diferentes concentraciones de acidulantes (ac. cítrico, ac. láctico, y ac ascórb...