膳食中的纤维比其它任何成分都多,它影响大肠机能,使大便排出量增加,结肠内容物稀释、通过肠道的速度增加以及引起结肠中无机盐、氮、胆汁酸的代谢变化。这里指的纤维是植物细胞壁的多糖、木质素,而不是指粗纤维。在本文中,作者证明了小麦纤维和洋白菜纤维在肠道中的作用方式取决于它们被消化的 The dietary fiber contains more fiber than any other ingredient, affecting the function of the large intestine, increasing the amount of stools excreted, the contents of the colon being diluted, the rate of transit through the gut, and the metabolic changes of inorganic salts, nitrogen, and bile acids in the colon. Here refers to the fiber plant cell wall polysaccharides, lignin, rather than the crude fiber. In this paper, the authors demonstrate that the mode of action of wheat fiber and cabbage fiber in the intestine depends on their digestion