Industrial as well as home processing can bring about profound changes in the chemical composition of food and its nutritive value. While a variety of treatments may be detrimental, certain modifications of foodstuffs can actually improve their digestibiity and biological value. The effect on specific nutrients also varies and may differ depending on the type of treatment and food used. The purpose of this handbook is to provide a systematic and critical treatment of these questions. This publication should be an invaluable tool to food technologists, dieticians, and nutritionists, as well as to livestock producers and persons engaged in production, processing, and formulation of animal feeds. It should also be of great interst to conscientious consumers concerned about the quality and wholesomeness of food products.