Encontrados 6 documentos, a visualizar página 1 de 1
Application of an impedimetric technique for the detection of lytic infection o...
Amorim, Lara R. P.; Silva, Joana G. L.; Gibbs, Paul A.; Teixeira, Paula C.This study was performed to evaluate the adaption of the impedimetric method to detect the lytic infection by Salmonella-specific bacteriophages and to provide a higher selectivity to this rapid method in detecting Salmonella spp. by using specific agents. Three bacteriophages and twelve strains of Salmonella spp. were tested. Each of the twelve strains was used separately to inoculate TSB together with each on...
Effect of cut-type on quality of minimally processed papaya
Argañosa, A. Carla S. J.; Raposo, M. Filomena J.; Teixeira, Paula C. M.; Morais, Alcina M. M. B.BACKGROUND: This research was undertaken to study the effects of different cut-types (cube, parallelepiped, cylinder and sphere) on the quality and shelf-life of papaya cv. Sunrise Solo. Physicochemical analyses were carried out during 10 days of storage at 4 ◦C to determine colour, firmness, pH, titratable acidity, total soluble solids, weight loss and vitamin C content. Microbiological analysis and sensory ev...
Growth control of listeria innocua 2030c on vacuum-packaged cold-smoked salmon ...
Tomé, Elisabetta; Gibbs, Paul A.; Teixeira, Paula C.Five bacteriocin-producing lactic acid bacteria (LAB): Enterococcus faecium ET05, Lactobacillus curvatus ET06, L. curvatus ET30, L. deldrueckii ET32 and Pediococcus acidilactici ET34, selected by their capacity for growth and producing inhibition in vitro at high salt-on-water content, low temperature and anaerobic atmosphere, conditions simulating cold-smoked fish,were inoculated onto salmon fillets, in co-cul...
In vitro tests of suitability of bacteriocin-producing lactic acid bacteria, as...
Tomé, Elisabetta; Pereira, Vera L.; Lopes, Carla I.; Gibbs, Paul A.; Teixeira, Paula C.The objectives of this study were to ascertain the in vitro potential of nine bacteriocin-producing lactic acid bacteria (LAB) strains, isolated from vacuum-packaged cold-smoked salmon (CSS), for possible use as biopreservative cultures against Listeria monocytogenes. The antilisterial activity of cultures’ supernatants was assessed at 0.5%, 3.0% and 5.0% w/v of salt, at 5ºC, 10ºC and 25ºC both in aerobic and a...
Antimicrobial effects of a microemulsion and a nanoemulsion on enteric and othe...
Teixeira, Paula C.; Leite, Gonçalo M.; Domingues, Ricardo J.; Silva, Joana; Gibbs, Paul A.; Ferreira, João PauloSome microemulsions and nanoemulsions may have antimicrobial properties and be effective anti-biofilm agents. We examined the abilities of two fine emulsions, designated BCTP and TEOP, to inactivate suspensions of vegetative cells of Salmonella spp. Escherichia coli 0157:H7 (VT-), Pseudomonas aeruginosa, Staphylococcus aureus and Listeria monocytogenes. BCTP is an O/W nanoemulsion of soybean oil and tri-n-butyl...
Listeriosis in Portugal: an existing but under reported infection
Almeida, Gonçalo N.; Gibbs, Paul A.; Hogg, Tim A.; Teixeira, Paula C.Listeriosis is a rare disease caused by the bacterium Listeria monocytogenes, the normal vehicle of which is food. The disease, which is largely confined to its risk groups of pregnant women, the elderly and immunocompromised individuals, has increased in incidence in recent years. In Portugal, listeriosis is not a notifiable infection and available data are scarce. The objective of this work was to collate the...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||