Vitamins

Vitamins - Critical in the formation of hemoglobin. Needed...

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Vitamins • Essential in the diet • Required in small amounts • Organic molecules • Wide range of physiological functions Classification of vitamins Fat-soluble: A, D, E, K Water soluble: All others (B 1 , B 6 , B 12 , C, etc) The importance of vitamins was discovered by the effect of diets lacking them. Between the 1500 and 1700, sailors used to suffer from scurvy (break down of collagen tissue), caused by deficiency of vitamin C. By 1800 the British Navy required limes as a part of the diet of sailors. Vitamin A (retinol) Needed for reproduction, growth, cell maturation and differentiation, night and color vision. Vitamin B 6 (pyridoxine) Required for the activity of more than 100 different enzymes (coenzyme) involved in metabolism of carbohydrates, proteins, and fat.
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Unformatted text preview: Critical in the formation of hemoglobin. Needed for the synthesis of neurotransmitters. Vitamins Vitamin C (ascorbic acid) Wide variety of functions. Reducing agent (donates electrons in reactions). Important in the formation of collagen. Hydroxyproline, an amino acid, is a major component of collagen, the protein that strengthens ligaments and tendons and provides skin elasticity. The human body makes proline, which it converts to hydroxyproline, but it requires vitamin C to complete the process. A lack of vitamin C in the diet can cause hydroxyproline deficiency, producing the skin lesions typical of the disease scurvy. Vitamin D (calciferol) Regulates blood calcium. Cell differentiation and function. Vitamins...
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Vitamins - Critical in the formation of hemoglobin. Needed...

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