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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 ...
Influence of carbonyl groups on the interaction of PLA2 with lipid interphases
(Elsevier, 2020-11)
It is known that phospholipase A2 (PLA2) hydrolyzes phosphatidylcholines (PC) producing lysophosphatidylcholine and fatty acids. The substrate of the enzymatic action is the sn2 acyl chain being Ca2+ ion an essential ...
Antiradical activity of gallic acid included in lipid interphases
(Elsevier, 2014-04)
Polyphenols are well known as antioxidant agents and by their effects on the hydration layers of lipid interphases. Among them, gallic acid and its derivatives are able to decrease the dipole potential and to act in water ...
Volume recovery, surface properties and membrane integrity of Lactobacillus delbrueckii subsp. bulgaricus dehydrated in the presence of trehalose or sucrose
(Wiley Blackwell Publishing, Inc, 2007-07)
Aims: Although the practical importance of adding sugars before drying is well known, the mechanism of protection of bacteria by sugars is not clear. The response of the dehydrated micro-organisms to rehydration is analysed ...
First steps in the formulation of praziquantel nanosuspensions for pharmaceutical applications
(Taylor & Francis, 2020-08)
Praziquantel (PZQ), a broad spectrum anthelmintic drug, cannot be found in acceptable dosage forms for elderly patients, paediatric patients, and for veterinary use. In fact, very little has been done up to now in the ...
Processing of concentrated aqueous zirconia-bioglass slips by slip casting
(Inst Chemical Technology, 2017-02)
3 mol% yttria-partially stabilized zirconia (Y-TZP) powder and a sol-gel derived CaO- P₂O₅- SiO₂ (64S) bioglass, were used to produce Y-TZP- bioglass slip cast compacts. The rheological properties of concentrated aqueous ...
Interaction of hydroxy-xanthones with phosphatidylcholines: The effector decreases compressibility and increases the fluidity of membranes
(Elsevier Science, 2020-09)
This work reports the effect of hydroxy-xanthones (XAs) on 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine(DPPC) and 1,2-Dimyristoyl-sn-glycero-3-phosphocholine (DMPC) bilayers as determined by ultrasound velocimetry,densimetry ...