Gout and COVID-19 have been of global concerns. One the drugs for gout is allopurinol that acts as a xanthin oxidase inhibitor (XOI). However, this drug has side effects, so we need safer from herbal sources such sugar apple. Sugar apple ethanol extract can act XOI, but activity steeping with hot water not known. Besides, several compounds are also reported to be active anti-viruses, their cate...

The purpose of this research is to investigate and identify polyphenolic complexes other biologically active compounds by tandem mass spectrometry, presented in the leaves stems Ledum palustre L. Carbon dioxide, compressed a supercritical state, was used for most environmentally friendly extraction effective characteristics (pressure 350 bar; temperature 60 °С; time 1-hour, co-solvent MeOH 3.5%...

We analyzed the anti-inflammatory and antinociceptive activities of total flavonoids (TF) found in black mulberry fruits. The TF content was 20.9 mg/g (dry weight). Two anthocyanins, cyanidin-3-O-glucoside (8.3 mg/g) and cyanidin-3-O-rutinoside (2.9 mg/g), were identified in the fruits by UPLC. The TF of black mulberry fruits had significant reducing power and radical (OH(-), O2(·-), DPPH and A...

The relationship between colour parameters and anthocyanins of four sweet cherry cultivars, Burlat, Saco, Summit and Van was studied. The colour (L*, a*, b*, chroma and hue angle parameters) and anthocyanins were analysed during two different years at two different ripening stages (partially ripe, and ripe, respectively). The cherries were analysed at harvest and after storage at 1.5 ± 0.5 C an...

The aim of this work is to develop the first validated UHPLC-PDA method for major anthocyanins quantification in Euterpe oleracea fruits after fast extraction procedures and samples preparation. The separation was performed on HSS C18 column (1.8 μm) using a gradient elution with acetonitrile and 5% formic acid in a total run time of only 17 min. Total error and accuracy profiles were used as c...

Acetone extracts from eggplant (Solanum melongena L.) and violet pepper (Capsicum annuum L.) peels both belonging to the Solanaceae plant family were characterized with respect to their anthocyanin profiles, colour qualities and antioxidant capacities. According to HPLC-DAD-MS3 analyses the major anthocyanin in eggplant was delphinidin-3-rutinoside, while the predominant pigment in violet peppe...

In the present investigation, an ethanolic fraction (EF) of Lepechinia meyenii (salvia) was prepared and fractionated by gradient column chromatography, main secondary metabolites in EF were identified HPLC-MS. Silver nanoparticles (AgNPs) synthesized conjugated with (salvia). The AgNPs synthesis optimized using Plackett-Burman design response surface methodology (RSM), considering following in...