植物性食物中难被胃肠消化与吸收的纤维状物质,常被称作食物纤维即纤维素。食物纤维虽不能被人体消化吸收,但可以促进肠胃蠕动,增加粪便体积,有利于肠胃排空增进食欲,可防治大肠疾病、防治肥胖症及便秘,被专家称为人体第七营养素。食物加工 Vegetable foods difficult to be gastrointestinal digestion and absorption of fibrous material, often called food fiber that is cellulose. Although food fiber can not be digested and absorbed by the human body, it can promote gastrointestinal motility, increase the volume of feces, promote gastrointestinal emptying, increase appetite, prevent colorectal diseases and prevent obesity and constipation. It is called the seventh nutrient by the experts. Food processing