It would be desirable to establish and standardize methods that can measure the total antioxidant capacity level directly from vegetable extracts containing phenolics. Antioxidant capacity assays may be broadly classified as electron transfer (ET)- and hydrogen atom transfer (HAT)-based assays. The majority of HAT assays are kinetics-based, and involve a competitive reaction scheme in which ant...

Abstract Phenolic compounds provide important quality attributes to red wines interacting with the organoleptic impact of wines. Yeast mannoproteins can interact grape phenolic compounds, responsible for colour and antioxidant activity The aim this work was perform oenological characterisation specific selection Calabrian strains Saccharomyces sensu stricto . Among considered traits, aptitude y...

Background:  Cisplatin has cytotoxic effects through free radical generation. Reports indicate that various members of Pinaceae family may have antioxidant properties. In this study we investigated the cytoprotective effects of needle volatile oil and bark extract of Pinus eldarica in hepatoma G2 (HepG2) cell line.  Methods: Using the maceration technique, we obtained the ethanolic extract of ...

In this paper, the polyphenol content and antioxidant activity of fig leaf extracts were analyzed. Extraction was performed with methanol, ethanol, acetone their aqueous mixtures (50:50 v/v). Extractions stirring at 300 rpm on a vibromix ultrasonic bath for 15 minutes. The determined spectrophotometrically using Folin-Ciocalteu test. Antioxidant capacity tested FRAP DPPH methods. results showed...

In this study, total phenolic contents and antioxidant activity were determined in various products made from two cultivars of jamman fruit (Eugenia jambolana) i.e. improved (V1) indigenous (V2). Five each cultivar such as jam, squash, ready-to-drink juice, pulp powder seed powder. Fruit endogenous to the typical region Sindh-Pakistan. Total analyzed by Folin-Ciocalteu colorimetric method, wher...

The research objectives were to identify the secondary metabolite components, total phenolic content and determine antioxidant activity of ethanol extract red betel leaf (Piper crocatum Ruiz & Pav.). extraction process was carried out by materation using as a solvent. Determination colorimetrically with Folin-Ciocalteu reagent measured at maximum wavelength 765 nm. DPPH method spectrophotom...

Honey contains various compounds that function as antioxidants, one of which is phenolic compounds. The purpose this study was to determine the correlation between content multiflora honey from Malang and Alastuwo on antioxidant activity using DPPH method (2,2-Diphenyl-1-picrylhydrazyl). Qualitative test with FeCl3 color reagent, determination total by UV-Vis spectrophotometry Folin-Ciocalteu r...

objective: boerhaavia elegans l. (nyctaginaceae) is a medicinal plant used for the treatment of kidney disorders, urinary tract disorders and blood purification in baluch tribe. the aim of present study is to evaluate the antioxidant propertyof b. elegans species for the first time. materials and methods: different parts (leaf, stem and fruit) of the plant were extracted by using various solven...

Radical scavenging activity of the extracts Lathyrus aphaca L. var. pseudoaphaca (Boiss.) Davis, aureus (Stev.) Brandza, cicera L., sphaericus Retz., digitatus (Bieb.) Fiori in & Paol. and setifolius taxa distributed Burdur-Isparta regio was determined. Methanol air dried aerial parts seeds plants were dissolved water chlorophylls lipophilic compounds removed from aqueous extracts. 2,2-...