INTRODUCTORY FOOD SCIENCE AND TECHNOLOGY DIETARY FIBRE : SIGNIFICANT TO HUMAN HEALTH OR NOT? In scientific terms, dietary fibre is a mixture of components derived from plant cell wall material and non-structural polysaccharides, as well as non-starch polysaccharides added to foods. It includes non-digestible polysaccharides such as cellulose, hemi-celluloses, gums, pectins, mucilages and lignin. From a nutrition point of view, some authorities also include 'resistant starch' (i.e. starch that is resistant to enzymic degradation, usually as a result of processing). This dissertation deals with the physical and chemical properties of dietary fibre and discusses its significance with respect to