Vitamins in Foods presents the latest information about vitamins and their analysis, bioavailability, and stability in foods.

Features:

• Presents information on vitamin chemistry, absorption, and metabolism
• Discusses vitamin stability during the post-harvest handling, processing, storage, and preparation of food
• Explores the development of suitable analytical methods for research into vitamin bioavailability
• Examines the relationship of vitamin bioavailability to variables imposed by food constituents and food preparation

Contents

Nutritional Aspects of Vitamins

• Definition and Classification of Vitamins
• Nutritional Vitamin Deficiency
• Vitamin Requirements
• Vitamin Enhancement of Foods
• Stability of Vitamins

Intestinal Absorption and Bioavailability of Vitamins: Introduction

• General Principles of Solute Translocation
• Intestinal Absorption
• Bioavailability

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 Supplementation

Vitamin D

• Background
• Chemical Structure, Biopotency, and Physiochemical Properties
• Vitamin D in Foods
• Intestinal Absorption, Transport, and Metabolism
• Bioavailability

Vitamin E

• Background
• Chemical Structure, Biopotency, and Physiochemical Properties
• Vitamin E in Foods
• Intestinal Absorption and Transport
• Bioavailability
• Vitamin E Requirements

Vitamin K

• Background
• Chemical Structure, Biopotency, and Physicochemical
• Properties
• Vitamin K in Foods
• Intestinal Absorption and Transport
• Bioavailability

Thiamin (Vitamin B1)

• Background
• Chemical Structure, Biopotency, and Physicochemical
• Properties
• Thiamin in Foods
• Intestinal Absorption
• Bioavailability

Flavins: Riboflavin, FMN, and FAD (Vitamin B2)

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Vitamin B2 in Foods
• Intestinal Absorption
• Bioavailability

Niacin

• Background
• Chemical Structure, Biopotency, and Physicochemical
• Properties
• Niacin in Foods
• Intestinal Absorption
• Bioavailability

Vitamin B6

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Vitamin B6 in Foods
• Intestinal Absorption
• Bioavailability

Pantothenic Acid

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Pantothenic Acid in Foods
• Intestinal Absorption
• Bioavailability

Biotin

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Biotin in Foods
• Intestinal Absorption
• Bioavailability

Folate

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Folate in Foods
• Absorption, Transport, and Metabolism
• Bioavailability

Vitamin B12 (Cobalamins)

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Vitamin B12 in Foods
• Absorption and Conservation
• Bioavailability

Vitamin C

• Background
• Chemical Structure, Biopotency, and
• Physicochemical Properties
• Vitamin C in Foods
• Intestinal Absorption
• Bioavailability

Analytical Considerations

• Bioassays
• In Vitro Analytical Techniques
• Analytical Approach
• Preparation of Sample Extracts for Analysis
• Method Evaluation

Extraction Techniques for the Water-Soluble Vitamins

• Vitamin B1
• Vitamin B2
• Niacin
• Vitamin B6
• Pantothenic Acid
• Biotin
• Folate
• Vitamin B12
• Vitamin C

Microbiological Methods for the Determination of the B-Group Vitamins

• Introduction
• General Principles
• Conventional Turbidimetric Method Using Test Tubes
• Turbidimetric Method Using Microtiter Plates
• Assays of Individual B-Group Vitamins

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

Determination of the Fat-Soluble Vitamins by HPLC

• Nature of the Sample
• Extraction Procedures
• Cleanup Procedures
• HPLC Systems
• Applications of HPLC

Determination of the Water-Soluble Vitamins by HPLC

• HPLC Systems
• Applications of HPLC

Biospecific Methods for Some of the B-Group Vitamins

• Introduction
• Immunoassays
• Protein-Binding Assays
• Biomolecular Interaction Analysis

Summarized 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

Index

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