Usnea barbata (L.) Weber ex F.H. Wigg (U. barbata) is a medicinal representative of the lichens from genus (Parmeliaceae, lichenized Ascomycetes), containing bioactive secondary metabolites. The aim this study comparative analysis between two separated parts thallus layers: medulla–cortex (mcUB) and central cord (ccUB) whole dried U. (dUB). These three samples were examined regarding color diff...

A new trinuclear oxo-centered chromium(III) complex with formula [Cr3O(CH3CO2)6(L)(H2O)2] (L = 5-hydroxyflavone, known as primuletin) was synthetized and characterized by ESI mass spectrometry, thermogravimetry, and 1H-NMR, UV-Vis, and FTIR spectroscopies. In agreement with the experimental results, DFT calculations indicated that the flavonoid ligand is coordinated to one of the three Cr(III) ...

Objective: study of the antiradical and antioxidant activity water, water-alcohol alcohol extracts obtained from alfalfa sickle grass. Materials methods. As an object research activities sickle, grass in flowering stage, which was harvested Russian Federation Kursk region, considered. The evaluated using a titrimetric method based on result interaction substances reducing nature that are presen...

Rosa canina L. is a member of Rosaceae family, which is well-known for its high phenolic contents. These compounds are known to possess antioxidant and antiradical effects. In order to compare the antioxidant and antiradical activity of wild Rosa phenolic extracts, two wild Rosa species (Rosa canina L. and Rosa pimpinellifolia L.) were selected from Takab, Oshnavieh and Qasemloo Valley of Urmia...