Egg Yolk as a New Source of Peptides with Antioxidant and Antimicrobial Properties.

A significant increase in interest in food-derived peptides obtained mostly through enzymatic reactions has been observed in the past few years. One of the best sources of bioactive peptides are defatted egg yolk proteins, which can potentially find application as high-quality nutritional supplements for infants with cow's milk protein intolerance and as natural preservatives. The aim of this study was to obtain peptides from defatted egg yolk protein, to study their antioxidant and antimicrobial properties, and to identify peptides with bioactive properties To control the course of the process, MALDI-TOF/MS (matrix-assisted laser desorption/ionization time-of flight/mass spectrometry) spectra were also examined.

Utilizing an Amino Acid Scaffold to Construct Heteroditopic Receptors Capable of Interacting with Salts under Interfacial Conditions.

A 4-nitro-L-phenylalanine scaffold was used to construct effective ion pair receptors capable of binding anions in an enhanced manner with the assistance of alkali metal cations. A benzocrown ether was linked to a receptor platform the amide function so as to support the squaramide function in anion binding and to allow all three NHs to act simultaneously. The binding properties of the receptors were determined using UV-vis, H NMR, 2D NMR, and DOSY spectroscopy in MeCN and in the solid state by X-ray measurements.

Helicobacter pylori outer membrane vesicles involvement in the infection development and Helicobacter pylori-related diseases.

Helicobacter pylori - (H. pylori) play a role in the pathogenesis of gastritis, gastric and duodenal ulcers as well as gastric cancer. A possible involvement of outer membrane vesicles (OMVs) produced by H.

Bacterial Flora Associated with Diseased Freshwater Ornamental Fish.

Introduction: Ornamental fish can suffer from different bacterial diseases. Among them the most prevalent are infections caused by , and . But there is a broad spectrum of rarely identified bacteria which may be causative agents of diseases.