O efeito da pimenta do reino preta moída frente a contaminaçäo in vitro com salmonella rubislaw / The effect in vitro of ground black pepper on contamination with salmonella rubislaw
Rev. Inst. Adolfo Lutz
; 61(2): e35002, 2002. tab
Article
in Pt
| LILACS, SES-SP, SESSP-IALPROD, SES-SP, SESSP-IALACERVO
| ID: lil-342873
Responsible library:
BR91.2
Localization: BR91.2; P / BR76.1; P
RESUMO
As especiarias e seus derivado têm sido usados no preparo de alimentos há milhares de anos, conferindo-lhes sabor e aroma diferenciados. A açäo inibitória das especiarias e seus extratos nos diferentes microorganismos tem sido relatada. O objetivo deste trabalho foi avaliar a açäo antibacteriana da pimenta do reino preta moída (Piper nigrum L.) e de seu óleo essencial frente a uma cepa de Salmonella Rubislaw. Os efeitos da pimenta e seu óleo adicionados em meios de cultura foram avaliados em dois experimentos. No primeiro foram preparados dois tipos de meio de cultura sólidos, um com 1 por cento de pimenta do reino e o outro com 1 por cento de óleo esencial diluído em etanol, adicionados de caldo tripticase de soja (TSB) e ágar. As semeaduras foram feitas em superfície de diluiçöes decimais (10-1 até 10-7) da cepa de S. Rubislaw, em fase estacionária. Após a incubaçäo a 35 graus C durante 24 a 48h, procedeu-se a contagem das colônias. No segundo experimento, 1mL da diluiçäo 10-3 da mesma cepa, em fase estacionária, foi adicionada a 100mL deTSB com o óleo diluído em etanol, para uma concentraçäo final de 100ug/mL. Após 24h de incubaçäo a 35 graus C foram realizadas contagens padräo em placas. Os resultados obtidos nos experimentos näo demonstraram efeito inibitório da pimenta do reino preta moída e de seu óleo essencial na cepa estudada
ABSTRACT
Spices and their derivatives have been used in food housekeeping for thousands of years,bringing about differentiated flavor and aroma. Inhibitory action of the spices and their extracts on thedifferent microorganisms has been reported. The objective of this work was to evaluate the antibacterialaction of the ground black pepper (Piper nigrum L.) and of its essential oil on Salmonella Rubislaw strainculture. The effect of the pepper and its oil addition in culture medium was evaluated in two experiments.In the first one two types of solid culture medium had been prepared, one with 1% of ground black pepperand the other with 1% ethanol oil solution, added to broth tripticase soy (TSB) and agar. Sowings ofdilutions (10-1 up to 10-7) of the Salmonella strain, in stationary phase had been made in agar surface. Afterincubation at 35ºC for 24/48h, standard count method was carried out. In a second experiment, 1mL of thesame strain dilution 10-3, in stationary phase, was added to 100ml of TSB with the oil diluted in ethanol, toa final concentration of 100µg/mL. Standard count was carried out after 24h of incubation at 35ºC. Theresults gotten in the experiments had not demonstrated inhibitory effect of the ground black pepper and itsessential oil for the studied strain
Key words
Full text:
1
Collection:
01-internacional
Database:
LILACS
/
SES-SP
/
SESSP-IALACERVO
/
SESSP-IALPROD
Main subject:
Salmonella
/
Spices
/
Piper nigrum
/
Antibodies, Bacterial
Language:
Pt
Journal:
Rev. Inst. Adolfo Lutz
Journal subject:
MICROBIOLOGIA
/
SAUDE PUBLICA
Year:
2002
Document type:
Article
Affiliation country:
Brazil