Chen W J, Anderson J W
Am J Clin Nutr. 1981 Jun;34(6):1077-82. doi: 10.1093/ajcn/34.6.1077.
Certain soluble plant fibers have hypocholesterolemic effects. However, information about soluble fibers of most foods is not available. A modification of Southgate's method was used to separate plant fiber into soluble and insoluble fractions. Both fractions were hydrolyzed with dilute sulfuric acid or trifluoracetic acid. Comparison of these two hydrolysis methods was discussed. The hydrolyzed sugars were measured by gas-liquid chromatography. Fiber content of selected cereals and vegetables were examined. Oat, corn, and cooked beans have greater proportions of soluble fiber than wheat and green vegetables. Soluble fractions of cereals and beans were mainly glucose whereas in green vegetables uronic acids were the major components. The differing fiber composition of various plant food sources probably is important in determining their physiological effects.
某些可溶性植物纤维具有降胆固醇作用。然而，关于大多数食物中可溶性纤维的信息并不可得。采用对索思盖特方法的一种改进，将植物纤维分离为可溶部分和不溶部分。这两个部分均用稀硫酸或三氟乙酸水解。讨论了这两种水解方法的比较。水解后的糖类通过气液色谱法测定。对选定的谷物和蔬菜的纤维含量进行了检测。燕麦、玉米和煮熟的豆类比小麦和绿色蔬菜含有更高比例的可溶性纤维。谷物和豆类的可溶部分主要是葡萄糖，而绿色蔬菜中的主要成分是糖醛酸。各种植物性食物来源中不同的纤维组成在决定其生理效应方面可能很重要。
