Vegetal Polyphenol Extracts as Antioxidants for the Stabilization of PLA: Toward Fully Biobased Polymer Formulation.

The use of natural antioxidants as substitutes for traditional synthetic stabilizers has been investigated for the stabilization of biobased and biodegradable polymers, with the aim of designing fully biobased plastic formulations. This study focused on the thermo- and photostabilization of poly(lactic acid) (PLA) using vegetal polyphenol extracts as biosourced antioxidants. The polyphenols were extracted by microwave-assisted extraction from the valorization of vegetal waste, and their potential as antioxidant additives was evaluated (e.

Fluorescent probe for the detection of acetylcholinesterase inhibitors using high performance thin layer chromatography effect-directed assay in complex matrices.

In recent years Bioautography has become an efficient bioassay for finding active compounds in complex matrices including extracts of; bacteria, plants or fungi. High Performance Thin Layer Chromatography (HPTLC) is a technique which allows effect-directive analysis (EDA) through the separation and identification of biologically active substances on a Thin Layer Chromatography (TLC) plate and can be run as a high throughput screening assay for enzymes. This paper presents a new bioautography method using a novel fluorescent probe derived from coumarin and its validation with Acetylcholinesterase (AChE) inhibition.

Chemical Profile, Antioxidant and Anti-Inflammatory Potency of Extracts of Oliv. and (Afzel ex G. Don).

Oliv. (Lamiaceae) and (Rubiaceae), two plants commonly used in traditional African medicines to treat malaria and pain, were studied either to determine their chemical profiles or to evaluate their antioxidant and anti-inflammatory activities. In this study, we investigated leaves, trunk bark, root bark and fruits methanolic extracts of both plants in order to find out which part of the plant is responsible for the activity.

Potential Anti-Inflammatory and Chondroprotective Effect of .

(1) Interest in the family has risen as some members have shown anti-inflammatory properties and interesting compounds. In this regard, we decided to investigate the antioxidant and anti-inflammatory properties of , a not yet extensively studied, in the context of osteoarthritis. (2) The Ethanol extract (LS-E) was used to test the production of reactive oxygen species (ROS) by leucocytes, the IL1β and PGE2 production by peripheral blood mononuclear cells (PBMCs), the production of EP4, and the activation of NFκB in THP-1, as well as the IL1β-activated normal human knee articular chondrocytes (NHAC-Kn) gene expression, grown in monolayers or maintained in alginate beads.

Xanthine Oxidase Inhibitors from (L.) Maxim. and Their Efficient Detections by HPTLC and HPLC Analyses.

is a plant commonly used for the treatment of several pathologies, such as diarrhoea, ulcers, pain, stomach aches, fevers, and gout. Our study focused on the use of for the treatment of gout disease. We first studied the chemical composition of a methanolic extract of the aerial parts and demonstrated its xanthine oxidase (XO) inhibitory activity.