What is the mechanism of antioxidant activity?
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An antioxidant is a substance that at low concentrations delays or prevents oxidation of a substrate. Antioxidant compounds act through several chemical mechanisms: hydrogen atom transfer (HAT), single electron transfer (SET), and the ability to chelate transition metals.
What is the principle of antioxidant?
The primary antioxidants are those that neutralize free radicals by either donating a hydrogen atom (hydrogen atom transfer or HAT) or by a single electron transfer (ET) mechanism. Meanwhile, secondary antioxidants are those that neutralize prooxidant catalysts.
What peptide is responsible for antioxidant activity?
In the present study, the identified peptide (Ala-Tyr) contained the amino acids that have an antioxidant activity. Thus, the carp skin gelatin hydrolysate has a great potential as a natural antioxidant ingredient for food and pharmaceutical applications.
What kind of molecules are antioxidants?
The main antioxidants in this category are vitamin C, vitamin E, carotenoids, and glutathione (GSH). The large-molecule antioxidants are enzymes (SOD, CAT, and GSHPx) and sacrificial proteins (albumin) that absorb ROS and prevent them from attacking other essential proteins.
Where do you find antioxidants in food?
Broccoli, spinach, carrots and potatoes are all high in antioxidants, and so are artichokes, cabbage, asparagus, avocados, beetroot, radish, lettuce, sweet potatoes, squash, pumpkin, collard greens and kale. Using lots of spices in cooking is good.
Which gas is used as antioxidant?
Consistent with this first report showing the antioxidant effect of hydrogen, Ohsawa et al. demonstrated that inhaled hydrogen gas (~4%) has antioxidant and anti-apoptotic properties that can protect the brain against ischemia-induced injury and stroke by selectively neutralizing the detrimental ROS [83].
How do you make Bioactive peptides?
Production of bioactive peptides. Basically, biologically active peptides can be produced from precursor milk proteins in the following ways: (a) enzymatic hydrolysis by digestive enzymes, (b) fermentation of milk with proteolytic starter cultures, (c) proteolysis by enzymes derived from microorganisms or plants.
What is antioxidant and its function?
Antioxidants are substances that may protect your cells against free radicals, which may play a role in heart disease, cancer and other diseases. Free radicals are molecules produced when your body breaks down food or when you’re exposed to tobacco smoke or radiation.
What are the benefits of antioxidants?
A diet high in antioxidants may reduce the risk of many diseases (including heart disease and certain cancers). Antioxidants scavenge free radicals from the body cells and prevent or reduce the damage caused by oxidation. The protective effect of antioxidants continues to be studied around the world.