Identification of phenolic compounds in the buds of Algerian desf. Subsp. by antioxidant activity guided fractionation.

Objectives: A bio-guided selection and identification of the most active compounds obtained from Algerian desf. Subsp.

Methods: An antioxidant activity guided fractionation was performed on buds' extract using extensive chromatographic and spectroscopic techniques.

Threatened Cretan species Boiss. & Heldr.: phenolic profile by HPLC-PDA-MS and antioxidant capacity.

In this study, the chemical content of the threatened Cretan endemic Boiss. & Heldr. was investigated by High Performance Liquid chromatography-Photodiode Array-Mass Spectrometry (HPLC-PDA-MS) analysis.

Chemical composition and biological activities of aerial parts' methanol fractions.

Methanol extract of , was evaluated for its antiradical potential and capacity in inhibiting lipoxygenase and aldose/aldehyde reductase enzymes. The ethyl acetate fraction derived from the methanol extract partition, showed the greatest antioxidant capacity, while the butanol was the strongest inhibitor of lipoxygenase enzyme. All fractions (diethyl ether, ethyl acetate, butanol and the aqueous residue) exhibited strong inhibition capacity of both aldose/aldehyde reductase enzymes, which comes in agreement with the ethnomedicinal plant utilization as an antidiabetic agent.

Phytochemical analysis and antioxidant activity of Lycium barbarum (Goji) cultivated in Greece.

Context: The fruit of Lycium barbarum L. (Solanaceae), known as goji berry, has been exploited for a long time in traditional Chinese medicine. In recent decades, it has received much attention as one of the trendiest functional foods with a wide array of pharmacological activities in Western diets.

Phytochemical analysis with the antioxidant and aldose reductase inhibitory capacities of Tephrosia humilis aerial parts' extracts.

The aerial parts of Tephrosia humilis were tested about their antioxidant potential, their ability to inhibit the aldose/aldehyde reductase enzymes and their phenolic content. The plant material was exhaustively extracted with petroleum ether, dichloromethane and methanol, consecutively. The concentrated methanol extract was re-extracted, successively, with diethyl ether, ethyl acetate and n-butanol.