Vitamins.

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Presentation transcript:

Vitamins

Vitamins Water-soluble Vitamins Fat-soluble Vitamins

Water-soluble Vitamins Vitamin B1 (Thiamin) Vitamin B2 (Riboflavin) Vitamin B3 (Niacin) Vitamin B5 (Panthotenic acid) Vitamin B6 (Pyridoxine) Vitamin H (Biotin) Vitamin B9 (Folic acid) Vitamin B12 (Cobalamin) Vitamin C (Ascorbic acid)

Water-Soluble Vitamins Water-soluble vitamins are: Soluble in aqueous solutions. Used as cofactors by many enzymes. Not stored in the body.

2. Fat-soluble Vitamins Vitamin A (Retinol) Vitamin D Vitamin E (Tocopherol) Vitamin K Lipoic acid (Thioctic acid)

Fat-soluble vitamins: Are A, D, E, and K. Soluble in lipids, but not in aqueous solutions. Important in vision, bone formation, antioxidants, and blood clotting. Stored in the body.

Fat-soluble Vitamins

Vitamin A

Vitamin A

Vitamin D

Vitamin E

Vitamin K

Lipoic acid (Thioctic acid)

Water-soluble Vitamins

Vitamine B1 (Thiamin)

TPP is necessary as a cofactor for: Pyruvate dehydrogenase a-ketoglutarate dehydrogenase Transketolase catalyzed reactions of PPP. A deficiency in thiamin intake leads to a severely reduced capacity of cells to generate energy as a result of its role in these reactions.

Clinical Significances of Thiamin Deficiency Beriberi, is the result of a diet that is carbohydrate rich and thiamin deficient. Wernicke-Korsakoff syndrome. This disease is most commonly found in chronic alcoholics due to their poor dietetic lifestyles.

Vitamine B2

Vitamine B2

Vitamine B2

Vitamine B3

Vitamine B3

Vitamin B5 kkkk

Vitamine B5

Vitamine B5

Vitamine B6

Vitamine B6 Transamination Deaminetion Decarboxylation(α-amino acids) Glycogenolysis(glycogen phosphorylase) NAD+(Trp pathway)

Vitamine H (Biotin)

Vitamine B12

Folic acid

Folic acid

Vitamine C

Vitamine C Collagen biocynthesis Tyr catabolism Epinephrine biosynthesis Bile salts biosynthesis Biosynthesis of stroid hormones Iron absorption As an antioxidant