Polyphenol Composition and (Bio)Activity of Species and Wild Strawberry from the Argentinean Patagonia.

The Argentinean Patagonia berries , , and ssp. f. patagonica were investigated for their polyphenol content and composition by means of liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry.

Exploring the response of Actinobacteria to the presence of phosphorus salts sources: Metabolic and co-metabolic processes.

This study tested the solubilization of phosphorus by five actinobacterial strains in liquid media containing Ca PO ; AlPO or FePO as the sole phosphate source, and discusses the possible mechanisms involved in this process. P solubilization by different strains was accompanied by a significant drop in pH from 7.0 to 2.

Effects of propofol and other GABAergic phenols on membrane molecular organization.

GABA(A) receptor is the main inhibitory receptor of the central nervous system. The phenols propofol and thymol have been shown to act on this receptor. GABA(A) is an intrinsic protein, the activity of which may be affected by physical changes in the membrane.

Lipophilicity of some GABAergic phenols and related compounds determined by HPLC and partition coefficients in different systems.

Some phenolic compounds, like propofol and thymol, have been shown to act on the GABA(A) receptor. Taking into account the hydrophobicity of these compounds, their interaction with the membrane surrounding the receptor and consequent non-specific effect on receptor modulation cannot be neglected. In the present work, we determined and correlated several lipophilic parameters for both GABAergic agents and three other related phenolic compounds (eugenol, carvacrol and chlorothymol), including logP(o/w), retention data in high performance liquid chromatography (HPLC) by using C18 and immobilized artificial membrane (IAM) columns at different temperatures, and partition coefficients determined in phospholipid liposomes.