Vitamin E – Chemistry, Sources, Functions and Deficiency Manifestations – This is video on 3rd fat soluble vitamins i.e Vitamin E with example of theory questions and NEET PG Biochemistry MCQs
00:00 – Introduction
00:32 – Examples of theory questions that can be asked from Vitamin E
00:58 – Chemistry of Vitamin E/ Structure of Vitamin E
01:33 – Dietary Sources of Vitamin E
01:53 – Nutritional Requirement of Vitamin E / RDA of Vitamin E
02:20 – Biochemical functions of Vitamin E
02:20 – Vitamin E as an antioxidant
02:57 – Inter relationship of vitamin E with selenium
03:57 – Causes of vitamin E deficiency
04:31 – Vitamin E Deficiency Manifestations
05:09 – Hypervitaminosis E
05:28 – NEET PG biochemistry MCQs
Vitamin E (Tocopherol)
Active vitamin was isolated from wheat germ oil and named tocopherol (tokos = child birth = pheros = to bear, ol = alcohol)
Structure
Vitamin E consists of eight naturally occurring tocopherols, of which α-tocopherol is the most active form
Functions
Vitamin E acts as a natural antioxidant by scavenging free radicals and molecular oxygen.
Vitamin E is important for preventing peroxidation of polyunsaturated fatty acids in cell membranes.
Protection of erythrocyte membrane from oxidant is the major role of vitamin E in humans. It protects the RBCs from hemolysis
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