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Sources of antioxidants
The primary biological role of antioxidant is in preventing the damage that reactive free radical can cause to cells and cellular compounds. In fact, almost all the food constituents having a protective effect against specific diseases seem to have some kind of antioxidant property. Free radical is a group of atoms that behave like a unit, eg.: Carbonate radical, (CO3- -), Nitrate radical (NO3- ), and Methyl radical (CH3- ). Free radical contains one or more unpaired electrons. Human body naturally produces free radicals as it metabolises oxygen. Reactive free radicals are able to produce metabolic disturbances and to damage membrane structures in a variety of ways. This may lead to cardiovascular disease, cancer and other health problems.
The current dietary recommendation to increase fruit and vegetable consumption is one which is widely perceived as health-promoting. Consistent epidemiological links worldwide between high fruit and high vegetable consumption and a greater life expectancy warrant more emphasis given to this particular dietary recommendation. Fruit and vegetables are the rich sources of the antioxidants, vitamin C, vitamin E, various carotenoids, flavonoids, isoflavones, organo-sulphur compounds, copper, manganese and magnesium and may also contribute to pools of endogenously produced antioxidants such as ubiquinol. Fruit and vegetables, however, are not the only dietary source of antioxidants and other rich sources of vitamin E include nuts and seeds, wholegrain breakfast cereals, wholemeal bread, eggs, margarine, vegetable oils, and dairy products. A list of plant-based sources of antioxidants is presented herewith.
Structure and IUPAC name of K3[Al(C2O4)3]
The correct ground state electronic configuration of chromium atom is: (1) [Ar] 3d 5 4s 1 (2)[Ar]3d 4 4s 2 (3) [AR]3d 6 4s 0 (4
A 64-g sample of germanium-66 is left undisturbed for 12.5 hours. At the end of that period, only 2.0 g remain. What is the half-life of this material? 4. With a half-life of 28.8
explanation..
Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?
Styrene rubber (GR-S or Buna-S or SBR or Ameripol): Styrene butadiene rubber (SBR) is prepared by the copolymerization of butadiene (75%) and styrene (25%) in an emulsion styrene
Group 1- Alkali Metals The elements of group 1 are commonly known as alkali metals after the alkaline properties of their hydroxides such as NaOH. The atoms have the (ns) 1 e
can all the total heat content available betotally converted to work done?
CAN BOHR MODEL EXPLAIN THE SPECTRUM LINE OH HYDROGEN ATOM?
Theory of Meta directing group The substituent, S takes electrons from para and ortho positions. So, m-position becomes a position of comparatively high electron density and fu
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