Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 4 de 4
Filter
1.
Hig. aliment ; 23(170/171): 98-102, mar.-abr. 2009. graf
Article in Portuguese | LILACS | ID: lil-558019

ABSTRACT

Considerando os contaminantes da casca do ovo e o seu uso em alta escala na indústria de alimentos, o ovo passa a ser uma matéria prima que oferece riscos à saúde do consumidor, bem como prejuízo ao produtor e ao setor industrial. Com o objetivo de aumentar a eficiência na limpeza e sanificação, utilizamos, isoladamente, hipoclorito de sódio nas concentrações de 5,8, 50 e 100 mg/L de cloro ativo, composto de amônio quaternário concentrado a 50% diluído 1/500 e 1/1000 e um composto de amônio quaternário comercial contendo 20% do ingrediente ativo em suspensão alcalina, diluído de acordo com as recomendações do fabricante. (...) Realizou-se a contagem global de bactérias mesófilas e psicrotróficas aeróbias, bolores, leveduras, coliformes totais e fecais antes da aplicação dos sanificantes (para acompanhamento dos contaminantes oriundos da granja) e após a sanificação, compreendendo o período de estocagem de sete e quatorze dias para avaliação da sanitização. Na prática da aplicação em laboratório, encontramos que a microbiota da casca do ovo, foi reduzida de 2 a 3 ciclos logarítmicos quando usado os compostos de amônio quaternário (CAQ).


Subject(s)
Acetic Acid/administration & dosage , Quaternary Ammonium Compounds/administration & dosage , Food Contamination/prevention & control , Egg Shell , Sodium Hypochlorite/administration & dosage , Washing Agents
2.
Braz. j. microbiol ; 31(2): 107-12, Apr.-Jun. 2000. tab
Article in English | LILACS | ID: lil-297647

ABSTRACT

The effects of treatment with anaerobic cecal microflora (ACM) and/or lactose and/or acetic acid on systemic and digestive tract of broiler chicks infection with "Salmonella" Typhimurium and "S." Enteritidis were studied. ACM was used without previous bacterial identification. Treatment with ACM contributed to the resistance of broiler chicks to infection with "Salmonella" spp. The infections were more persistent in the cecum, rectum and crops in decreasing order of intensity. The infections were also self-limiting since treated and control lots presented similar infection rates at the end of the experiments. Alone or in combination with lactose, ACM reduced the colonization of the digestive tract of broiler chicks by "S." Typhimurium and "S." Enteritidis. The effect of the combination of ACM with lactose or acetic acid was not potentiated in terms of reduction of fecal excretion of "Salmonella" spp. Treatment with ACM reduced the amount of "S." Typhimurium and "S." Enteritidis in feces. Alone or in combination with lactose, ACM reduced the cecal pH in treated birds. "S." Enteritidis was much more invasive than "S." Typhimurium and the use of ACM alone was more effective on the reduction of systemic infection. An explanation for the process of prevention of intestinal colonization with "Salmonella" spp. probably resides in the interrelationship of physiological, microbiological and immunological phenomena, as well as the variation in cecal pH.


Subject(s)
Animals , Acetic Acid/analysis , Lactose/analysis , Salmonella enteritidis/isolation & purification , Salmonella Infections, Animal/diagnosis , Salmonella typhimurium/isolation & purification , Bacterial Infections/diagnosis
4.
Hig. aliment ; 7(25): 5-11, mar. 1993.
Article in Portuguese | LILACS | ID: lil-139820

ABSTRACT

Comenta-se nesta breve revisao a participacao e o significado de Shigella em processos de infeccao alimentar. Sao tambem abordados as caracteristicas do microrganismo, seus fatores de virulencia e determinancia genetica.Aspectos epidemiologicos da infeccao, bem como, condicoes de crescimento e metodos de deteccao em alimentos, sao tambem abordados


Subject(s)
Humans , Dysentery, Bacillary/diagnosis , Dysentery, Bacillary/epidemiology , Dysentery, Bacillary/pathology , Dysentery, Bacillary/prevention & control , Food Handling/methods , Shigella boydii/growth & development , Shigella boydii/pathogenicity , Shigella dysenteriae/growth & development , Shigella dysenteriae/pathogenicity , Shigella flexneri/growth & development , Shigella flexneri/pathogenicity , Shigella sonnei/growth & development , Shigella sonnei/pathogenicity , Virulence , Food Contamination/prevention & control , Food Hygiene , Food-Processing Industry/methods , Food-Processing Industry , Bacterial Infections/transmission , Intestines/pathology
SELECTION OF CITATIONS
SEARCH DETAIL