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In vitro antimicrobial activity of royleanone derivatives against Gram positive...
Rijo, P.; Duarte, A.; Francisco, A. P.; Semedo-Lemsaddek, T.; Simões, M. F.Infections caused by multiresistant bacterial pathogens are a significant problem worldwide, turning the search for natural compounds to act as alternatives to antibiotics of major importance. The aim of the present study was to investigate the in vitro antimicrobial activity of 7α-acetoxy-6β-hydroxyroyleanone (1), isolated from Plectranthus grandidentatus (Lamiaceae), and 11 additional royleanone abietane deri...
Selection of staphylococci strains isolated from a Portuguese traditional ferme...
Carvalho, L.; Fernandes, M.J.; Fernandes, H.; Semedo-Lemsaddek, T.; Elias, M.; Barreto, A.S.; Fraqueza, M.J.In order to evaluate its potential use as starter cultures, 104 isolates of Staphylococcus spp. were obtained from sausages and different sampling environment points in workshops A and B, at southern region of Portugal. PCR amplification was carried out to confirm genus and species allocation. From workshop A, 47 isolates were staphylococci, the majority belonging to the specie S. equorum, while from workshop B...
Antibiotic Resistance and Virulence Factors among Enterococci Isolated from Cho...
Ribeiro, T; Oliveira, M; Fraqueza, M.J; Laukova, A; Elias, M; Tenreiro, R; Barreto, A.S; Semedo-Lemsaddek, TEnterococci are ubiquitous microorganisms, found as part of the normal intestinal microbiota of many animals. They can be present in food products, for example, the Portuguese dry fermented sausage chourico. Twenty enterococci were isolated from chourico in two processing units; after identification and typification by conventional-molecular methods, the isolates were screened for virulence factors and antibiot...
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