人体由成千上万的细胞构成,而细胞所需的营养由水、蛋白质、脂肪、糖类、维生素和矿物质六大营养素构成。现在人们吃得越来越精细,越来越注重口感,反而忽略了对食物中纤维素的摄取,导致便秘、痔疮、大肠癌等疾病的发病率逐年上升。因此,现代营养学把纤维素作为第七大营养素,它在玉米面、高粱、豌豆、蚕豆、豇豆、白菜、韭菜、竹笋、萝卜、荠菜、黄瓜、南瓜、苹果、梨、西红柿、草莓等食物 The human body consists of thousands of cells, and the nutrition required by the cells consists of six nutrients, water, protein, fat, sugars, vitamins and minerals. Now people eat more and more refined, pay more and more attention to taste, but ignore the intake of dietary fiber, leading to constipation, hemorrhoids, colorectal cancer and other diseases increased year by year. Therefore, modern nutrition uses cellulose as the seventh largest nutrient in foods such as cornmeal, sorghum, pea, broad bean, cowpea, cabbage, leek, bamboo shoot, radish, shepherd’s purse, cucumber, pumpkin, apple, pear, tomato and strawberry