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Published on : Aug 18, 2018
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Slide 1 - VITAMINS By SG Bhuvan Kumar
Slide 2 - VITAMINS - deficiency diseases History of vitamins : The story of vitamin dates back to 18th century. Sailors of this period knew that eating of liver cures a disease called night blindness and Eating of lemons cures another disease called scurvy. Also cod liver oil cures a disease called rickets In 1912, Sir H.G. Hopkins first identified Vitamins in MILK and named it as Accessory factors. Funk named the accessory factors as Vitamins (Vital amines).
Slide 3 - Vitamins are micronutrients, which are very much essential for growth and for metabolism. If antibiotics are indiscriminately taken, the bacteria present in the intestines which synthesize the Vitamins will be killed and it leads to Vitamin deficiency disorders
Slide 4 - Vitamins are classified into two types – based on their solubility . They are - Water soluble vitamins & Fat soluble vitamins. Water soluble Vitamins - Vitamin ‘B’ complex and Vitamin ‘C’ Fat soluble vitamins. - Vitamin A, Vitamin D, Vitamin E and Vitamin K
Slide 5 - Water soluble vitamins Vitamin B Complex is group of Vitamins. It contains – a) Thiamine – B1 e) Cyanocobalamin – B12 b) Riboflavin – B2 f) Folic acid c) Niacin - B3 g) Pantothenic acid d) Pyridoxine – B6 h) Biotin
Slide 6 - Vitamin –B1 - Thiamine is also known as Vitamin B1. It is needed for the activity of some of the enzymes of carbohydrate metabolism. Deficiency disease - Beri-Beri. In this disease, the calf muscles become tender, vomiting, tremors, convulsions, loss of appetite are seen. Sources: Cereals like wheat, oil seeds like groundnut, milk, meat, fish.
Slide 7 - RIBOFLAVIN - Riboflavin is otherwise known as Vitamin-B2. Functions: Riboflavin is essential for oxidation reduction reactions in the cell and in cellular respiration. Sources: It is present in milk, eggs, liver, kidney and green leafy vegetables. Deficiency disorders: Deficiency of riboflavin result in Glossitis Mouth cracks at corners. Photophobia, scaly skin and watering of eyes are some of the symptoms.
Slide 8 - NIACIN: Niacin is one of the ‘B’ Complex Vitamins. It is also known as Vitamin B3. Functions: Niacin is essential for the metabolism of carbohydrates, proteins and fats. Sources: It is present in kidney, liver, meat, poultry fish, legumes and groundnuts. Deficiency disorders: Deficiency of niacin in diet result a disease called Pellagra. The symptoms of pellagra are diarrhea, dementia (loss of memory) patches on the body when exposed to sunlight .
Slide 9 - PYRIDOXINE: Pyridoxine is otherwise called Vitamin-B6. Functions: Pyridoxine plays an important role in the metabolism of amino acids. Sources: It is present in milk, liver, meat, egg yolk, fish, cereals, legumes and vegetables. Deficiency disorders: Deficiency lead to hyper irritability, anaemia, nausea and in children it leads to convulsions.
Slide 10 - Folic Acid : Sources: It is present in liver, meat, eggs, milk, fruits, cereals, and leafy vegetables over cooking of food destroys the folic acid Functions : Folic acid is required for the synthesis of nucleic acids (DNA and RNA). It is also required for the development of blood cells in the bone marrow. Deficiency Symptoms: Its deficiency causes anemia, diarrhoea and decrease in the number of leucocytes. Cell division in tissues such as intestinal mucosa is affected in folic acid deficiency.
Slide 11 - Cyano cobalamin: It is also known as vitamin B12. Functions: It plays an important role in the metabolism of nucleic acid of protein synthesis. Sources : Bacteria present in the intestine synthesize this vitamin and supply to our body. Liver is the main site of storage of vitamin B12 Deficiency diseases : Deficiency of this vitamin causes pernicious anemia that is different from other types of anaemia.
Slide 12 - PANTOTHENIC ACID It is one of the ‘B’ complex vitamins. Functions: It is required for the metabolism of carbohydrates, proteins and fats. Sources: The sources of pantothenic acid are fresh vegetables, liver, kidney, yeast, egg yolk, meat, ground nuts etc. Deficiency leads to burning sensation in feet
Slide 13 - Biotin is one among the ‘B’ complex vitamins. Functions: It is required for protein metabolism. Sources: Biotin is present in pulses, nuts, vegetables, liver and kidney. Deficiency disorders: Deficiency leads to muscle pains, fatigue, disorders in the nervous system and mental depression. BIOTIN
Slide 14 - Vitamin C – It is also called as Ascorbic Acid Sources: Vitamin C is present in fresh fruits, green leafy vegetables, tomatoes and germinating pulses. Citrus fruit and Indian gooseberry are the richest source of this vitamin. Guava is another cheap and rich source of Vitamin C. Functions Vitamin C plays an important role in tissue oxidation reactions. It is required for the formation of collagen which is required for the formation of blood vessels, connective tissue, cartilage and dentine of teeth. Vitamin C also helps in the absorption and storage of iron. This Vitamin is also required for normal growth, tissue repair, healing of wounds and fracture of bone.
Slide 15 - Deficiency disease - SCURVY: Scurvy is the nutritional disorder caused due to the deficiency of Vitamin ‘C’. The symptoms of this disease are swelling of gums, bleeding from gums and from the joints and under the skin. This disease is preventable by providing the diet that is rich with Vitamin-‘C’.
Slide 16 - vitamin - A Vitamin – D Vitamin – E Vitamin - K Fat soluble vitamins are -
Slide 17 - Vitamin - A The chemical name of Vitamin A is Retinol. It is also called as Antixeropthalmic Vitamin Sources - It is readily available in foods of Liver, eggs, butter, whole milk, fish, meat, oils extracted from fishes such as cod liver oil and shark liver oil. In plants vitamin ‘A’ is present in the form of a carotene. In green leafy vegetable (Spinach amaranth etc.,) other vegetable like carrots, tomato, pumpkin, fruits like papaya and mango and its converted into vitamin ‘A’ in our body.
Slide 18 - Deficiency of vitamin A: Deficiency leads to a variety of disorders of the eyes and this affect the vision, some of the disorders are – 1)Night blindness: The person cannot see the objects in dim light and in nights. 2)Xeropthalmia (or) Dry eyes: The lacrimal glands in the eyes do to produce tears. The conjunctiva (or) the outer most layer of the eye becomes dry 3)The cornea becomes soft and burst open. This leads to the loss of vision and permanent blindness - the major cause of blindness in children. 4)Skin become scaly, rough and is covered with papillae (Small eruptions). The skin looks like that of a toad. 5)Reproductive functions may also be effected in vitamin ‘A’ deficiency. National Institute of Nutrition, Hyderabad has evolved a method giving a large dose (5 – 6 drops) of Vitamin-A once in six months to prevent blindness in children
Slide 19 - Vitamin ‘D’- The chemical name of vitamin ‘D’ is Calciferol Function - It helps in the absorption of Ca & P by the intestine and its deposition on the bones. The rich source of Vitamin ‘D’ is sun light and sun light has the capacity to convert cholesterol in our body into Vitamin ‘D’. Deficiency of vitamin ‘D’ leads to bone deformities such as Rickets. (bent bones and knock knees)
Slide 20 - Sources - Vitamin ‘D’ present in foods of animal origin such as liver, egg yolk, butter, oils extracted from the livers of fishes such as cod or shark. It is formed in the skin from a cholesterol derivative by the action of Ultra Violet rays of sunlight
Slide 21 - VITAMIN-E Vitamin-E is also called as Tocoferol or Anti sterility Vitamin. Functions: This vitamin is required for the normal functioning of sex organs. Sources: It is present in fruits, vegetables, germinating seeds, meat, egg yolk, sunflower oil, cotton seed oil etc., Deficiency disorders: Deficiency leads to sterility in males and abortions in females and also reduces the life span or R.B.C.
Slide 22 - VITAMIN-K Vitamin K is also known as Anti coagulation Vitamin. Functions: It is required for blood clotting. Sources: It is present in green leafy vegetables and in cow milk, in man this vitamin is synthesized by the bacteria present in the intestines. Deficiency disorders: deficiency results in long time for the blood to clot and loss of more blood from injuries
Slide 23 - Vitamins are very sensitive to heat. Over cooking leads to destruction of its chemical nature and some times leads toxic. Excess intake of antibiotics, destroy useful bacteria in our intestine, further leads to vitamin B 12 deficiency. Consuming highly polished rice, leads to vitamin B1 deficiency. FACTS OF VITAMINS