What is radical scavenging effect?

What is radical scavenging effect?

Effect on scavenging DPPH radical Based on the data obtained from this study, all the extracts were effective free radical inhibitor or scavenger, as well as a primary antioxidant that reacts with free radicals, which may limit free radical damage occurring in the human body.

What is antioxidant scavenging?

Antioxidants are compounds that can scavenge free radicals by interrupting radical chain reactions, or even prevent the reactive oxidants from being formed in the first place (Huang et al. 2005). Adverse effects of free radicals on aquatic organisms have been reported elsewhere.

How do antioxidants scavenge free radicals?

Antioxidants neutralize free radicals by giving up some of their own electrons. In making this sacrifice, they act as a natural “off” switch for the free radicals. This helps break a chain reaction that can affect other molecules in the cell and other cells in the body.

What is scavenging mechanism?

This is a mechanism in which H atom directly transfers from the antioxidant by homolytic O–H bond cleavage to the free radical to break oxidative chain reaction.

What is a free radical scavenger higher chemistry?

Free radical scavengers are chemicals (usually vitamins, minerals or enzymes) that react with and destroy free radicals. This is often desirable to help protect our skin (so they are present in cosmetics) and our food (present both in some foods and in plastics).

Which of the following is a radical scavenger?

These are known as preventive and chain breaking antioxidants or radical scavengers like catalases, glutathione peroxidase, superoxide dismutase (SOD), α-tocopherol (Vit. E), ascorbic acid (Vit. C), β carotene (Vit.

What is DPPH free radical scavenging activity?

DPPH free radical scavenging is an accepted mechanism for screening the antioxidant activity of plant extracts. In the DPPH assay, violet color DPPH solution is reduced to yellow colored product, diphenylpicryl hydrazine, by the addition of the extract in a concentration dependent manner.

What do free radicals do?

Free radicals are oxygen-containing molecules with an uneven number of electrons. The uneven number allows them to easily react with other molecules. Free radicals can cause large chain chemical reactions in your body because they react so easily with other molecules. These reactions are called oxidation.

What is scavenging in chemistry?

A scavenger in chemistry is a chemical substance added to a mixture in order to remove or de-activate impurities and unwanted reaction products, for example oxygen, to make sure that they will not cause any unfavorable reactions.

What do you mean by free radical?

Listen to pronunciation. (free RA-dih-kul) A type of unstable molecule that is made during normal cell metabolism (chemical changes that take place in a cell). Free radicals can build up in cells and cause damage to other molecules, such as DNA, lipids, and proteins.