Vitamins, 6. B Vitamins
Abstract
The article contains sections titled:
1. |
Vitamin B1 (Thiamin) |
1.1. |
Structure and Nomenclature |
1.2. |
History |
1.3. |
Physical Properties |
1.4. |
Chemical Properties |
1.5. |
Natural Occurrence and Isolation |
1.6. |
Biosynthesis in Microorganisms |
1.6.1. |
Biosynthesis of the Pyrimidine Component in Prokaryotes |
1.6.2. |
Biosynthesis of the Pyrimidine Component in Eukaryotes |
1.6.3. |
Biosynthesis of the Thiazole Component |
1.6.4. |
Biosynthesis of Thiamin Pyrophosphate |
1.6.5. |
Thiamin Biosynthetic Genes from E. coli |
1.6.6. |
Mapping and Cloning of Thiamin Biosynthetic Genes from Other Species |
1.6.7. |
Regulation of Thiamin Biosynthesis in Prokaryotes |
1.6.8. |
Regulation of Thiamin Biosynthesis in Yeasts |
1.6.9. |
Thiamin-Overexpressing Microorganisms |
1.7. |
Chemical Synthesis |
1.7.1. |
Condensation of the Pyrimidine and Thiazole Rings |
1.7.2. |
Construction of the Thiazole Ring on a Preformed Pyrimidine Portion |
1.8. |
Commercial Forms |
1.9. |
Derivatives, Analogues, and Antimetabolites |
1.10. |
Biochemical and Physiological Functions |
1.10.1. |
Metabolic Functions in the Organism |
1.10.2. |
Thiamin Requirements and Deficiency |
1.11. |
Analytical Methods |
2. |
Riboflavin |
2.1. |
Introduction |
2.2. |
History |
2.3. |
Physical and Chemical Properties |
2.4. |
Occurrence |
2.5. |
Biosynthesis |
2.6. |
Production |
2.6.1. |
Syntheses |
2.6.2. |
Industrial Chemical Production |
2.6.3. |
Industrial Production by Fermentation |
2.6.4. |
Syntheses of Flavin Mononucleotide (FMN) |
2.6.5. |
Syntheses of Flavin Adenine Dinucleotide (FAD) |
2.7. |
Importance for the Organism |
2.8. |
Requirements, Deficiency Symptoms, and Therapeutic Application |
2.9. |
Analysis |
2.10. |
Economic Aspects |
2.11. |
Tolerance |
3. |
Vitamin B6 |
3.1. |
Introduction |
3.2. |
History |
3.3. |
Physical Properties |
3.4. |
Chemical Reactions |
3.5. |
Occurrence |
3.6. |
Biosynthesis |
3.7. |
Production of Vitamin B6 Compounds |
3.7.1. |
Pyridoxine |
3.7.1.1. |
Oxidative Degradation of Bicyclic Heterocyclic Compounds |
3.7.1.2. |
Condensation Reactions with Aliphatic Precursors |
3.7.1.3. |
From Furan Compounds |
3.7.1.4. |
Diels - Alder Syntheses with Oxazoles |
3.7.1.5. |
Cobalt-Catalyzed [2+2+2]-Cycloaddition Reactions of Acetylenes and Acetonitrile |
3.7.2. |
Pyridoxine 5′-Phosphate |
3.7.3. |
Pyridoxal |
3.7.4. |
Pyridoxal 5′-Phosphate |
3.7.5. |
Pyridoxamine |
3.7.6. |
Pyridoxamine 5′-Phosphate |
3.8. |
Metabolism and Importance for the Organism |
3.9. |
Deficiency Symptoms and Applications |
3.10. |
Analysis |
3.11. |
Economic Aspects |
3.12. |
Requirements and Tolerance |
4. |
Vitamin B12 (Cobalamins) |
4.1. |
Introduction |
4.2. |
Properties of Vitamin B12 |
4.3. |
Analysis |
4.4. |
Biosynthesis |
4.5. |
Production |
4.5.1. |
Fermentation |
4.5.2. |
Work-Up |
4.5.3. |
Patents and Scientific Survey |
4.6. |
Specifications and Legal Aspects |
4.7. |
Economic Aspects |