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食物纤维是多糖的一种。由于只有草食动物有消化纤维素的酶,能够消化和利用纤维素,而食物纤维在人的肠道中不被消化利用,所以多年来,纤维素一直被认为是人体健康的无用之辈。自从在长期食用加工精细食品的英国人中发现大肠癌的发病率明显高于长期吃粗
Food fiber is a kind of polysaccharide. Since only herbivores have cellulolytic enzymes that digest and utilize cellulose, and that dietary fibers are not digested and utilized in the human gut, cellulose has been considered for many years useless for human health. The incidence of colorectal cancer has been found to be significantly higher in the UK than in long-term edible processed foods