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Zeta potential changes of Saccharomyces cerevisiae during fermentative and respiratory cycles
(Elsevier Science, 2019-02)
Saccharomyces cerevisiae is a type of yeast, widely used in diverse biotechnological food-beverage processes. Although the performance of an industrial fermentation process depends largely on the number of cells, it is ...
Interaction of green silver nanoparticles with model membranes: Possible role in the antibacterial activity
(Elsevier Science, 2018-11)
Silver nanoparticles (AgNPs) constitute a very promising approach for overcoming the emergence of antibiotic resistance bacteria. Although their mode of action could be related with membrane damage, the AgNPs-lipid membrane ...
Measure of Zeta Potential of Titanium Pillared Clays
(Elsevier, 2015-07)
The change of the zeta potential, ζ, with the pH as well as the isoelectric point of a charged particle are electrokinetic properties that characterize it. The TiO2 pillared clays are very interesting materials because of ...
Chemical composition of Schinus areira essential oil and antimicrobial action against Staphylococcus aureus
(Taylor & Francis Ltd, 2019-10)
The antimicrobial activities of plant extracts have formed the basis of many alternative medicines. In this context, the genus Schinus L. (Anacardiaceae), exhibits many traditional uses in medicine. However, a few studies ...
Filling gaps in the knowledge of melittin on lipid membranes
(Elsevier Science, 2019-01-21)
Melittin (ML) is a small peptide of 26 residues rich in arginine (Arg) and lysine (Lys). Several studies have been done to understand the mechanism of interaction with neutral and negatively charged lipids. However, it is ...
Experimental and computational studies of the effects of free DHA on a model phosphatidylcholine membrane
(Elsevier Ireland, 2018-12)
Docosahexaenoic acid (DHA, 22:6) is a natural active compound that has raised considerable interest due to its several biological effects. In this work, effects of free DHA on the physicochemical properties of dipalmitoy ...
Cell surface damage and morphological changes in Oenococcus oeni after freeze-drying and incubation in synthetic wine
(Academic Press Inc Elsevier Science, 2018-06)
The aim of the present study was to evaluate the effects of freeze-drying in the presence of trehalose as a cryoprotectant, followed by incubation in synthetic wine, on surface damage, viability and l-malic acid consumption ...
Layered double hydroxide nanoparticles customization by polyelectrolyte adsorption: mechanism and effect on particle aggregation
(Elsevier Science, 2017-11)
Adsorption of polyelectrolytes (PEs) is a common strategy for stabilizing nanoparticles and customizing their properties. Although scarcely explored for layered double hydroxide nanoparticles (LDH-NPs), it can be used to ...
Antibacterial activity of prenylated benzopyrans from Peperomia obtusifolia (Piperaceae)
(Taylor & Francis Ltd, 2019-06)
Peperomia obtusifolia is a herbaceous perennial plant native to the Americas reported as a traditional medicine to treat snake bites and as a skin cleanser. The bioassay-guided fractionation of crude extracts from aerial ...
New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
(Springer, 2020-05)
Colistin is a polymyxin antibiotic (polymyxin E) that has in recent years re-emerged as an option for treatment of multidrug-resistant bacteria. Recently, the re-introduction of colistin resulted in the appearance of ...