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| Machado,Terezinha Feitosa; Nogueira,Nádia Accioly P.; Pereira,Rita de Cássia Alves; Sousa,Cívita Teixeira de; Batista,ValériaChaves Vasconcelos. |
| The objective of this study was to evaluate the antimicrobial potential of Lippia alba essential oil (EOLa) and to investigate the effect of food ingredients on its efficacy. The antimicrobial potential of the oil was determined by the presence or absence of inhibition zones, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against Escherichia coli, Listeria innocua, Listeria monocytogenes, Pseudomonas aeruginosa, Salmonella choleraesuis and Staphylococcus aureus. The effect of food ingredients and the pH on the antimicrobial efficacy of oil was assessed by monitoring the maximum growth rate of Listeria monocytogenes in model media. The model media included potato starch (0, 1, 5 or 10%), beef extract (1, 5, 3, 6 or 12%),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential oil; Antimicrobial; Food ingredient. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200045 |
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| Bergo,Celso Luis; Pereira,Rita de Cássia Alves; Sales,Francisco de. |
| Conduziu-se este trabalho, com o objetivo de introduzir e avaliar 40 genótipos de cafeeiros das espécies Coffea arabica e Coffea canephora nas condições edafoclimáticas do Estado do Acre, visando disponibilizar aos cafeicultores acreanos, cultivares com melhor potencial produtivo. Da espécie C. arabica foram avaliados genótipos das cultivares Icatu, Bourbon, Mundo Novo, Catuaí, Obatã e Catimor. Da espécie C. canephora foram avaliadas as cultivares Conilon e Robusta, caracterizadas como Grupo Robusta. Os genótipos utilizados foram provenientes do Instituto Agronômico de Campinas (IAC) e da Embrapa Rondônia. O experimento foi conduzido no Campo Experimental da Embrapa Acre, Rio Branco, AC, no período de 1995 a 2004. O delineamento experimental foi em blocos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Café; Genótipos de café; Produtividade; Adaptação; Vigor. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000100001 |
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| Machado,Terezinha Feitosa; Pereira,Rita de Cássia Alves; Batista,Valéria Chaves Vasconcelos. |
| Lippia alba is a shrub of the Verbenaceae family, popularly known as lemon balm. It's essential oil is said to have broad-spectrum antimicrobial activity whose effectiveness varies according to its composition, which is influenced by both biotic and abiotic factors. The present study aimed to evaluate the antimicrobial effectiveness of oil taken from the leaves of L. alba collected at different times of the year, against microorganisms of importance in food. The oil, obtained by hydrodistillation, was tested against standard cultures of Pseudomonas aeruginosa, Salmonella choleraesuis, Escherichia coli, Staphylococcus aureus, Listeria monocytogenes and Listeria innocua using agar diffusion techniques. The different sampling times had a big influence on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lippia alba; Antimicrobial activity; Seasonality. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000300011 |
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