The present study aimed at investigating the influence of several production factors, conservation conditions, and extraction procedures on the phenolic compounds and antioxidant activity of blueberries from different cultivars. The experimental data was used to train artificial neural networks, using a feed-forward model, which gave information about the variables affecting the antioxidant...

the aim of present study was to investigate and compare antioxidant properties of green tea and rosemary extracts and determine the effect of their combination on the antioxidant properties. results of total phenols, dpph free radical scavenging assay, total antioxidant capacity, reducing power and their addition into soybean oil, showed that the green tea extract was significantly (p<0.05) mor...

Objective: There has been a growing interest in finding plants with biological active ingredients for medicinal application. Materials and Methods: Three colors of petals of Althaea officinalis (A. officinalis) flowers, i.e., pink, reddish pink, and white were examined for total antioxidant activity and flavonoids content. Results: The reddish pink flowers of A. officinalis have more antioxidant...

the antioxidant and cytotoxic properties of four major parts of methanolic extracts of tephrosia purpurea including leaves, root, stem and seed were investigated and compared. in vitro antioxidant activity of t. purpurea extracts was evaluated using 1,1-diphenyl-2-picrylhydrazyl (dpph), ferric reducing antioxidant power (frap), reducing power assay and antihemolytic assay. in vitro cytotoxic ef...

Background & Aim:Extracts of Roselle calyx,   possess compounds which could be considered as a great source of natural antioxidants.   In this project, antioxidant activities, phenolic compounds content and their   correlation analysis on calices of Roselle (Hibiscus sabdariffa) was investigated.  Experimental: Total polyphenolic compound, flavonoids and anthoc...

the aim of this study was to investigate the effects of administering antioxidants, including vitamin c and chitosan on oxidative stress markers in muscle as edible tissues of cyprinus carpio exposed to cadmium chloride. in this experiment, by exposing to 0.2 mg/l cadmium chloride for 21 days, fish were fed a normal diet, diet containing chitosan (1000 mg/kg diet), vitamin c (1000 mg/kg diet) o...

              The aim of the present experiment was to study the relationship between secondary metabolites content (phenol and flavonoid) and antioxidant activity in root, stem, leaves, and fruits of Heracleum gorganicumRech. F. The various parts of plant were collected in Ziarat Mountainin Golestan province. Total phenolics (TP) and total flavonoids (TF) contents were determined spectrophotom...

mahaleb (prunus mahaleb l.) is an important rootstock for p. avium and p. cerasus cultivars. the present study has compared the phenolic contents and antioxidant activity of the methanolic extracts of the barks, leaves and fruits of ten selected mahaleb genotypes. the total phenolic content (5.11-131.77 mg ga g-1) in barks and the total flavonoid (54.06-180.6 mg qe g-1) and proanthocyanidin (8....

Background & Aim:Medicinal plants are rich sources of substances with nutraceutical and health benefits. Valeriana officinalis L. (Valerianaceae) is a known medicinal plant used in traditional medicine throughout the world. The present study aimed to evaluate the efficiencies of three methods for antioxidant extraction from Valeriana officinalis</...