Fatty acid composition and antioxidant capacity of defatted, non-defatted and oils extracts of fruit from Algeria.

Background: The nutritional value and health-promoting properties cause the fruits (acorns) of to have great potential for use in the food industry as functional ingredients and antioxidants source.

Objective: In this study, the amount of total phenolic compounds, flavonoids in different extracts (defatted, non-defatted) and composition of fatty acids in the fruits oils of were investigated. Besides, antioxidant activity was determined.

PdRuO/PVP nanomaterial as a highly selective, stable, and applicable potentiometric sensor for the detection of Cr.

PdRuO/PVP nanomaterial was synthesized using a straightforward method and characterized using advanced analytical methods such as TEM, XRD, XPS, elemental mapping and SEM. The synthesized PdRuO/PVP nanomaterial was used as an ionophore in potentiometric sensor electrodes and successfully adapted to Cr ion detection in a large number of aqueous samples. Several experimental parameters of the PdRuO/PVP sensor such as potentiometric behavior, selectivity, repeatability, response time, pH, titration, and recovery in real samples were investigated.

New potentiometric PVC membrane electrode for Ferric Reduction Antioxidant Power assay.

In this study, a fast, reproducible and simple-to-apply a new potentiometric determination method was developed for the evaluation of iron (III) reducing power (FRAP), one of the antioxidant capacity tests. For this purpose, an all-solid-state contact iron (III)-selective poly vinyl chloride (PVC) membrane electrode (FRAP-PME) has been developed. In the structure of the developed polymeric membrane electrode (PME), Fe(II)-quercetin compound was used as the active ingredient.

Antiproliferative and cytotoxic effects of bioactive compounds isolated from Onosma bourgaei.

Onosma species have been used commonly for traditional medicine for years due to their bioactive compounds content. Onosma bourgaei aerial part was extracted with hexane and methanol successively. The methanol extract was subjected to chromatographic techniques to isolate allantoin (1), 3,4-dihydroxybenzaldehyde (2), luteolin-7-O-glucoside (3), apigenin-7-O-β-glucoside (4), diosmetin-7-O-β-glucoside (5), rosmarinic acid (6), and globoidnan A (7).

A new potentiometric PVC membrane sensor for the determination of DPPH radical scavenging activity of plant extracts.

In this study, a simple, fast, stable and low-cost potentiometric determination method is recommended for the evaluation of 1,1-diphenyl-1-picrylhydrazil radical (DPPH•) scavenging activity, which is one of the antioxidant activity tests. For this purpose, a new type of solid-state-contact potentiometric polyvinyl chloride (PVC) membrane sensor was developed. Gallic acid compound, which is sensitive to the DPPH•, was used as the active ingredient in the membrane structure of the sensor.

Chemical composition, antioxidant, and antimicrobial activities of two essential oils from Algerian propolis.

This study aims to investigate the chemical composition, antioxidant, and antimicrobial activity of two essential oils (EOs) from Algerian propolis. The volatile constituents were analyzed by gas chromatography-mass spectrometry. Fifty components were identified from the oils.

Bioactivity-guided isolation of flavonoids from Cynanchum acutum L. subsp. sibiricum (willd.) Rech. f. and investigation of their antiproliferative activity.

Cynanchum acutum L. subsp. sibiricum (Willd.