Now-a-days, there is an increased occurrence of various diseases like cardiovascular disease, neurological disorders, cancer, diabetes and autoimmune disease due to the presence of free radicals. Bandyopadhyay et al. [1]. Antioxidant is defined as the agent that neutralizes the effect produced by free radical Fang Y et al. [2]. The antioxidant can be classified into two categories, namely enzym...

Free radicals are atoms or molecules with unpaired electrons. Many diseases are caused by free radicals. Normally, free radical formation is controlled naturally by various beneficial compounds known as antioxidants. Several analytical methods have been used for qualitative and quantitative determination of antioxidants, and each has its own specificity. This project aimed to evaluate antioxida...

A sequential injection system based on the ABTS (2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulphonic-acid) methodology was developed. The proposed method, incorporating a mixing chamber in the side port of the selection valve, was evaluated to measure the total antioxidant activity of several beverages and foods. The ABTS(+) is generated by oxidation of ABTS with potassium persulfate and is redu...

Background. The use of plant origin polyphenols as food ingredients, supplements or antioxidants is very promising as a future trend for human health and food stability. Free radical activity, responsible for human ageing and food deterioration could be delayed by the use of antioxidants present in fruit and vegetables. The aim of the present research was to evaluate and compare the antiradical...

13 This study suggests that the phytochemicals in raspberries have significant antioxidant and anticancer activity. Darker raspberries show greater antioxidant activity than lighter ones but not significantly greater anticancer activity. Clearly other as yet unknown compounds are also involved. A bundant evidence suggests that regular consumption of fruits and vegetables reduces the risks of ch...

Antioxidant compounds are vital for the body. An imbalance in body's levels of free radicals and antioxidants will cause oxidative stress disease because damage surrounding molecules (lipids, proteins, nucleic acids), causing to tissues cells. Today many studies interested using natural food, beverages, cosmetics, therapies derived from plants. Centella asiatica is a plant often used as source ...

The aim of this study was to screen herbal formulation containing Tinosporia cordifolia, Moringa oleifera and Allium sativum display potent antioxidant activity in vitro order find possible sources for future novel antioxidants food pharmaceutical formulations. Data from present results revealed that act as an agent due its free radical scavenging cytoprotective activity.

An acceleration of free radical formation within human system exacerbates the incidence of several life-threatening diseases. The systemic antioxidants often fall short for neutralizing the free radicals thereby demanding external antioxidant supplementation. Therein arises the need for development of new antioxidants with improved potency. In order to search for efficient antioxidant molecules...

Antioxidants and Endothelial Dysfunction in Young and Elderly People: Is Flow-Mediated Dilation Useful to Assess Acute Effects? To the Editor: Wray et al reported that acute consumption of antioxidants by healthy subjects had diametrically different effects: flow-mediated dilation increased in elderly people but decreased in young people. The opposite effects are difficult to interpret and reco...

The paper presents the antioxidant activity evaluation of Silybum marianum L. extract in comparison with the commercial silymarin standard solution (2 mg/mL) and the time-dependent antioxidant capacity by calculating the free radical 2,2-diphenyl-1-pycryl-hydrazyl (DPPH) reaction rate in the presence of these biosystems. The best result was obtained in the case of S. marianum L. extract, with a...