Vegetable fibre: its physical properties
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چکیده
The physical properties exerted by dietary fibre are individual to the age and aiiatomy of the fruit or vegetable eaten. The physical properties will be determined by the chemistry of the constituent polysaccharides and lignins, In the plant these rnacromolecules arc systematically intermeshed for anatomical and physiological function. This intimate admixture is lost during digestion but the macerated polysaccharides and lignin will retain some of their functional characteristics. These characteristics are important in the function of non-ruminant colon and can be anticipated from the original physiological and anatomical role in the plant. Following cell division the primary cell wall consists of a watery pectin layer and cellulose. The secondary cell wall, which develops at a much later stage of growth, is formed by fibres running through a structureless matrix. Microfibrils of crystalline or partly crystalline cellulose are distributed with axes at different angles. The interspaces are filled with lignin, hemicelluloses and pectic substances held in a network (Rees, 1967).
منابع مشابه
The Physicochemical and Sensory Properties of Fruit and Vegetable Fibre Suspensions The Effect of Fibre Processing and its Addition to Low-Fat Sausages
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