The antioxidant capacities and the total phenolic content in cocoa liquor directly manufactured chocolate from an artisan manufacturer were measured using different in vitro methods (BR, TEAC, and Folin– Ciocalteu Reagent). These parameters were then compared with those of a chocolate made by a leading manufacturing company producing chocolate and cocoa-containing products. A statistical analys...

The purpose of this study was to analyze polyphenol rich beverages (vitamin enhanced waters (VEWs), fruit juices and berry juices) to determine free polyphenol concentrations and free polyphenols per Calorie based on a serving size. The Folin-Ciocalteu reagent was used in a colorimetric assay based on a catechin standard. Fruit and berry juices contained, on average, more than eight-times the c...

A novel polymeric material with antioxidant properties and suitable for ophthalmic application was synthesized by free radical grafting reaction between 2-hydroxyethyl methacrylate and quercetin. The presence of quercetin in the polymeric chain was confirmed by FT-IR and UV-Vis analyses, while an estimation of the amount of quercetin bound per gram of polymer was obtained by the Folin-Ciocalteu...

In the present study experiments were carried out to determine the total phenolic content and their comparative antioxidant activities in relation to phenol content employing Folin-ciocalteu, DPPH, and ABTS assays of the different solvent extracts of the plant S. macrosperma. It was found that on an average, the plant extract with higher levels of phenol content had higher antioxidant activity....

Etlingera elatior, Persicaria odorata, Centella asiatica, Senna alata and Phyllanthus emblica were reviewed for their in vitro anti-collagenase activity its total phenolic contents. Plant herbs play a vital role to promote the production of collagen which is component skin. Different solvents during plant extraction various parts used determine properties content. Generally, assay Folin-Ciocalt...

Resam fern (Gleichenia linearis (Burm.) C.B. Clarke) is a terrestrial plant that easy to grow and has been used for medicinal purposes as by the community empirically. This study aimed explore potential of Gleichenia plants based on their phytochemical profiles total phenol content extract. Clarke leaves were extracted with aquadest methanol solvent maceration method. Phytochemical was detected...

Objective: Antioxidant activities of the plants were significantly affected by their drying methods. In current study, total phenolic contents and antioxidant activity aqueous extracts peppermint (Mentha piperita L.) dried two different methods, air-dried (AD) freeze-dried (FD) measured. The aim was to determine if there any changes in according method. Material Method: order compounds capacity...

Melica uniflora is part of the omnivore and herbivore animal diets there not enough study about this plant. The aim to provide antimicrobial antioxidant potential ethanol extract M. leaves. Total phenolic flavonoid contents based on different methods activity leaves were examined. Disk diffusion method against eight bacteria strains, Folin-Ciocalteu method, DPPH free radical scavenging ferric r...

In this study, we have examined the antioxidant activity and total phenolic content of different extracts (including water, methanol, water : methanol and acetone) of Nerium oleander L. grown in the north of Iran by employing various in-vitro assay, i.e. DPPH free radical scavenging, reducing power and total antioxidant capacity through the Mo (VI) reduction. The extracts showed different level...