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Plant aqueous extracts: Antioxidant capacity via haemolysis and bacteriophage

The bacteriophage P22/Salmonella Typhimurium system, as well as human erythrocytes have been used to assay for protection, against forced oxidation caused by hydrogen peroxide, brought about by several aqueous extracts of selected adventitious plants grown in Portugal. This study proved, for the first time, that the aforementioned bacteriophage-based system is a suitable method to assess the antioxidant activit...

Effect of phenolic acids on glucose and organic acid metabolism by lactic acid ...

The influence of phenolic (p-coumaric, caffeic, ferulic, gallic and protocatechuic) acids on glucose and organic acid metabolism by two strains of wine lactic acid bacteria (Oenococcus oeni VF and Lactobacillus hilgardii 5) was investigated. Cultures were grown in modified MRS medium supplemented with different phenolic acids. Cellular growth was monitored and metabolite concentrations were determined by HPLC-R...

The influence of wine phenolic acids on the production of volatile phenols by l...

Building on scientific excellence via sharing of scientific expertise - The cas...

Many of the difficulties faced nowadays by society at large in maintaining a safe food supply can be effectively addressed by more and (preferably) better science. However, excellence in science will become more and more dependent on sharing of data and expertise - the nuclear idea emphasized in this viewpoint article, which conveys the major points presented and discussed by the senior author in the (invited) ...

Listeriosis in Portugal: an existing but under reported infection

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...

Production of volatile phenols by wine Pediococci

Cell membrane damage induced by phenolic acids on wine lactic acid bacteria

Use of chemical probes to detect cellular targets for phenolic acids in wine la...

Influence of phenolic compounds on glucose and organic acids metabolism of wine...

Fluorimetric detection of cell membrane lesions in wine lactic acid bacteria ex...