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Water vitamins - Water vitamins

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LR/CC/FNB UNIT 1 :Food Components Topic 5 : Water soluble vitamins
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LR/CC/FNB CH 3 NH 2 N N N CH 3 S O H CH 3 CH 3 N N N NH O O HO OH HO OH N NH 2 O Thiamin Riboflavin Niacin
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LR/CC/FNB 1: Thiamin L Co-factor in key enzymes of respiratory metabolism L e.g decarboxylations, as for pyruvate and in Krebs cycle reactions L Found in most plant & animal foods L However, only in low quantities
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LR/CC/FNB 2: Beri beri F Thiamin deficiency condition, L Known for 4000 years, but cause only for 100 L High carbohydrate staples, polished rice Observation on chickens in Java 1886 Soluble extract anti-beriberi factor by 1912 L Exhaustion, neural & muscular degeneration L Alcoholics, wet beri-beri Cardiovascular complications Peripheral and pulmonary oedema
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LR/CC/FNB 3: Riboflavin L Active as FAD, L energy carrier cofactor in Flavoprotein enzymes L Synthesised by plants & micro-organisms L Milk, Liver & kidney also good source L Light sensitive L 50% loss in milk exposed to sunlight for 2 h
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LR/CC/FNB 4: Riboflavin L Mild deficiencies recorded, L Alcoholics, elderly L Adolescents with no dairy intake L Glossitis, swollen smooth tongue
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LR/CC/FNB 5: Niacin L Essential for synthesis of energy transport intermediates NAD & NADP L Nicotinamide or Nicotinic acid from diet L Meat, liver, fish, nuts, cereals L Can also be synthesised from tryptophan But requires presence of adequate pyridoxine & the synthesis has low efficiency of 1.7% yield
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LR/CC/FNB 6: Pellagra F Niacin deficiency condition L
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