Index page for: Vitamins In Foods: Analysis, Bioavailability, and Stability

Table of Contents PART I: PROPERTIES OF VITAMINS Nutritional Aspects of Vitamins? Definition and Classification of Vitamins ? Nutritional Vitamin Deficiency ? Vitamin Requirements ? Vitamin Enhancement of Foods ? Stability of Vitamins ? References Intestinal Absorption and Bioavailability of Vitamins: Introduction? General Principles of Solute Translocation ? Intestinal Absorption ? Bioavailability? References Vitamin A: Retinoids and the Provitamin A Carotenoids? Background ? Chemical Structure, Biopotency, and Physicochemical? Properties ? Vitamin A in Foods? Intestinal Absorption, Metabolism, and Transport ? Bioavailability? b-Carotene SupplementationVitamin D ? Background ? Chemical Structure, Biopotency, and Physiochemical Properties ? Vitamin D in Foods ? Intestinal Absorption, Transport, and Metabolism ? Bioavailability ? References Vitamin E? Background ? Chemical Structure, Biopotency, and Physiochemical Properties ? Vitamin E in Foods ? Intestinal Absorption and Transport ? Bioavailability ? Vitamin E Requirements? References Vitamin K? Background ? Chemical Structure, Biopotency, and Physicochemical? Properties? Vitamin K in Foods? Intestinal Absorption and Transport? Bioavailability? References Thiamin (Vitamin B1)? Background ? Chemical Structure, Biopotency, and Physicochemical? Properties? Thiamin in Foods ? Intestinal Absorption ? Bioavailability? References Flavins: Riboflavin, FMN, and FAD (Vitamin B2)? Background ? Chemical Structure, Biopotency, and? Physicochemical Properties ? Vitamin B2 in Foods ? Intestinal Absorption ? Bioavailability? References Niacin? Background ? Chemical Structure, Biopotency, and Physicochemical? Properties? Niacin in Foods ? Intestinal Absorption ? Bioavailability? References Vitamin B6? Background? Chemical Structure, Biopotency, and? Physicochemical Properties ? Vitamin B6 in Foods ? Intestinal Absorption ? Bioavailability? References Pantothenic Acid? Background ? Chemical Structure, Biopotency, and? Physicochemical Properties ? Pantothenic Acid in Foods? Intestinal Absorption ? Bioavailability? References Biotin? Background? Chemical Structure, Biopotency, and? Physicochemical Properties ? Biotin in Foods? Intestinal Absorption ? Bioavailability? ReferencesFolate? Background ? Chemical Structure, Biopotency, and? Physicochemical Properties ? Folate in Foods ? Absorption, Transport, and Metabolism ? Bioavailability? References Vitamin B12 (Cobalamins)? Background? Chemical Structure, Biopotency, and? Physicochemical Properties ? Vitamin B12 in Foods ? Absorption and Conservation? Bioavailability? References Vitamin C? Background? Chemical Structure, Biopotency, and? Physicochemical Properties ? Vitamin C in Foods? Intestinal Absorption ? Bioavailability? References PART II ANALYTICAL CONSIDERATIONS Analytical Considerations? Bioassays ? In Vitro Analytical Techniques ? Analytical Approach ? Preparation of Sample Extracts for Analysis ? Method Evaluation ? References Extraction Techniques for the Water-Soluble Vitamins? Vitamin B1 ? Vitamin B2 ? Niacin ? Vitamin B6 ? Pantothenic Acid? Biotin? Folate? Vitamin B12 ? Vitamin C? References Microbiological Methods for the Determinationof the B-Group Vitamins? Introduction ? General Principles? Conventional Turbidimetric Method Using Test Tubes ? Turbidimetric Method Using Microtiter Plates? Assays of Individual B-Group Vitamins ? References Physicochemical Analytical Techniques (Excluding HPLC)? AOAC Titrimetric Method for Vitamin C? Direct Spectrophotometric Determination of? Vitamin C? Colorimetric Methods for Niacin and Vitamin C? Fluorometric Methods for Thiamin, Riboflavin,? Vitamin B6, and Vitamin C ? Enzymatic Methods for Nicotinic Acid and Ascorbic Acid ? Continuous-Flow Analysis ? Gas Chromatography? Supercritical Fluid Chromatography ? Capillary Electrophoresis ? References Determination of the Fat-Soluble Vitamins by HPLC? Nature of the Sample ? Extraction Procedures ? Cleanup Procedures ? HPLC Systems? Applications of HPLC? References Determination of the Water-Soluble Vitamins by HPLC? HPLC Systems ? Applications of HPLC? References Biospecific Methods for Some of the B-Group Vitamins? Introduction ? Immunoassays ? Protein-Binding Assays ? Biomolecular Interaction AnalysisSummarized Appraisal of Analytical Techniques? Microbiological Assays ? High-Performance Liquid Chromatography ? Supercritical Fluid Chromatography ? Capillary Electrophoresis ? Flow-Injection Analysis ? Biospecific Methods ? Evaluation of Vitamin Bioavailability From Food Analysis Data ? References