Biological Importance of Antioxidants

Antioxidants are the chemical substances that areduring the process of generating energy generate
capable of binding to the free oxygen radicals andimprudent oxygen species. The aerobic
averting the destruction of the healthy cells bymetabolism process requires oxygen as oxygen
these or antioxidants are the substances whichprovides the final quiescent place for generated
inhibits oxidation. Antioxidants are predominantlyelectrons by oxidation steps in citric acid cycle.
important in perspective of biology and organicAntioxidants dietary supplements are essential to
chemistry as all existing cells enclose intricateslow down, avoid, or even overturn certain
systems of the antioxidant chemicals or enzymesillnesses that are due to certain cellular damage,
to avoid chemical harm to the cellular componentsand conceivably even dawdling down the normal
through oxidation.aging process. Some of the important antioxidant
All Living organisms do have a composite schemedietary supplements are provitamin A (beta
of chemicals and antioxidant enzymes some ofcarotene) vitamin E, vitamin C and Selenium, or
which are conserved throughout the evolution andsome special herbs known to have antioxidants
thus are necessary for life. Antioxidants havevalues like those of jiaogulan and green tea.
immense significance in the biological systems,Studies have recommended that antioxidants are
including defending oxidative injure and contributingsignificantly useful in several ways concerning the
in major signaling passageways of the body cells.management of cancer. Antioxidants improve the
The most important function of antioxidants inefficiency of chemotherapy; reduce side effects
the body cells is to avert harm by action of theof radiotherapy and chemotherapy and preventing
imprudent oxygen species like superoxide anionsome kinds of cancer. Adequate epidemiological
(O2), hydrogen peroxide (H2O2), and freerevisions have revealed that ingesting antioxidants
radicals including hydroxyl radical (• OH). Suchcontaining like vegetables and fruits, can reduce
molecules are unsteady and extremely reactive,the jeopardy of numerous forms of cancer and it
and capable of spoiling cells by chemical sequentialis observed in several studies that blood of cancer
reactions for example lipid peroxidation and DNApatients contain reduced level of antioxidants.
adducts formation that might lead toAntioxidant dietary supplement are those food
cancer-promoting alteration or death of the cell. Allsupplements containing antioxidants obtainable
cells thus possess antioxidants serve to lessen orfrom plants. Though antioxidants play a vital role in
avoid its damage.our bodily defense mechanism they are to be
Antioxidants are further categorized as inert andsupplied from outside either as food or other
pro- oxidant on the type of the product releasedways. Investigations and studies on biological
at the end of the oxidation reaction in the cells.sciences reveal that consumption of antioxidant
Antioxidants are principally imperative in thedietary supplements reduces harm to cells and
eukaryotic cells mitochondria as oxygen utilizationbiochemical in the free radicals.