Cherno N K, Krusir G V
Prikl Biokhim Mikrobiol. 1992 Mar-Apr;28(2):297-303.
Acidic-basic characteristics of ionogenic groups of dietary fibers (DF) isolated from various raw materials were determined by potentiometric titration of DF using a method of individual weights and the ion-exchange properties of DF were estimated. The cation-exchanging ability of DF is within the range 0.2-1.5 meq/g DF. The calculated apparent constants of the acidic-basic dissociation of the DF functional groups are within the range allowing their reference to weakly acidic and basic groups. The source of the former can be polysaccharides (pectin substances, hemicelluloses), lignin and the protein accompanying DF components, which being an ampholyte possesses also basic properties. The effect of DF preparation on acidity of the gastric juice was studied to elucidate a possibility of using concentrated DF preparations for the correction of the states resulted from the hypersecretion of hydrochloric acid by the mucous membrane of stomach.
采用单独称重法对从各种原料中分离出的膳食纤维（DF）的离子基团进行酸碱特性测定，并通过电位滴定法对DF的离子交换特性进行评估。DF的阳离子交换能力在0.2 - 1.5 meq/g DF范围内。计算得出的DF官能团酸碱解离的表观常数在可将其归为弱酸性和碱性基团的范围内。前者的来源可能是多糖（果胶物质、半纤维素）、木质素以及与DF成分相伴的蛋白质，蛋白质作为两性电解质也具有碱性特性。研究了DF制剂对胃液酸度的影响，以阐明使用浓缩DF制剂来纠正因胃黏膜盐酸分泌过多导致的状态的可能性。
