vitamins ( B & C)

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Information about vitamins ( B & C)

Published on April 7, 2013

Author: nishikaa


VITAMINS (B & C): VITAMINS (B & C) PRESENTATION BY: NISHIKA BHAN CONTENTS: CONTENTS INTRODUCTION CLASSIFICATION VITAMIN B COMPLEX VITAMIN C REFERENCES INTRODUCTION: INTRODUCTION Vitamins = Vital Amines substance that is essential for life and yet needed only in minute amounts. Essential for growth and development PowerPoint Presentation: Vitamins - Classification On the basis of solubility Water soluble Vitamin C (ascorbate) B complex Fat soluble A (retinol) D (calciferol) K (2-methyl-1,4,naphthoquinone) E ( -tocopherol) PowerPoint Presentation: Thiamine (B 1 ) Riboflavin (B 2 ) Pantothenic acid (B 3) Nicotinamide (niacin) Pyridoxine (B 6 ) Folate / folic acid B 12 complex (cyanocobalamins) Biotin Vitamin B complex PowerPoint Presentation: Most act as enzyme cofactors Clinical deficiency is rare in affluent communities Vitamin B complex PowerPoint Presentation: Thiamine (B 1 ) Component of thiamine pyrophosphate: essential cofactor for decarboxylation – conversion of pyruvate → acetyl CoA Cannot be synthesized by body. Deficiency disease: beri beri. PowerPoint Presentation: Symptoms of Beri beri Loss of appetite Tingling hands and legs Weakness in leg muscles Difficulty in walking PowerPoint Presentation: Riboflavine (B 2 ) Function: Flavine mononucleotide (FMN) Flavine adenine dinucleotide (FAD) FMN and FAD = reversible electron carriers in biological oxidation systems Deficiency disease = ariboflavinosis PowerPoint Presentation: Ariboflavinosis Symptoms: Sore throat with redness Swelling of the mouth and throat mucosa, Cheilosis and angular stomatitis (cracking of the lips and corners of the mouth) Glossitis (magenta tongue) Decreased RBC count with normal cell size and hemoglobin content. PowerPoint Presentation: Nicotinamide (Niacin) formed in the body from nicotinic acid active constituent of NAD+ : nicotinamide adenine dinucleotide NADP+ : nicotinamide adenine dinucleotide phosphate NAD+ and NADP+  cofactors in oxidation-reduction reactions→→ e.g. glycolysis, oxidative phosphorylation, etc. PowerPoint Presentation: Deficiency Disease: Pellagra PowerPoint Presentation: Pyridoxine or Vitamin B 6 required for: Balancing of hormonal changes in women Growth of new cells Processing and metabolism of proteins, fats and carbohydrates Deficiency symptoms: Skin lesions, disturbance of central nervous system, anaemia. PowerPoint Presentation: Folate / Folic acid Present in green vegetables and some meats important in purine and pyrimidine synthesis Essential for growth and formation of RBCs. Deficiency symptoms: Anaemia failure of RBCs to mature ulceration of mouth inflammation of bowel PowerPoint Presentation: Cyanocobalamin (Vitamin B 12) Found in animal products but not green vegetables Coenzyme activity in nucleic acid synthesis Deficiency disease → megaloblastic anaemia which results from inhibition of DNA synthesis in RBC production characterized by many large immature and dysfunctional red blood cells (megaloblasts) in the bone marrow, and also by hypersegmented or multisegmented neutrophils. PowerPoint Presentation: Pantothenic acid (B 3) Part of CoA CoA – essential for fat and carbohydrate metabolism Essential in synthesis of hormones and cholesterol Deficiency symptoms: Abnormal functioning of adrenal glands Nerve degeneration Dermatitis Anaemia Biotin (vitamin H): Biotin (vitamin H) Coenzyme for fatty acid synthesis necessary for cell growth and the metabolism of fats and amino acids. is helpful in strengthening hair and nails. Deficiency symptoms: dermatitis alopecia (hair loss) achromotrichia (absence or loss of pigment in the hair) Muscle pain, weakness. PowerPoint Presentation: Vitamin C (Ascorbic Acid) Found in fruits and vegetables Cannot be synthesized by the body Functions : Hydrogen carrier Wound healing Normal collagen formation Deficiency disease → Scurvy: Deficiency disease → Scurvy Symptoms: hemorrhaging at the gums, large ecchymoses (bruising under the skin), general weakness, anemia, gum disease (gingivitis) References: References THANK-YOU: THANK-YOU

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