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所谓食物纤维,一般是指不能被消化酶所分解的物质而言。食品成分表中的粗纤维则是指被1.25%硫酸溶液及1.25%氢氧化钠溶液处理过的残渣,故食物纤维为粗纤维的2—5倍。随着人类生活的文明化,人们对食物纤维的摄取量也随之减少,如英国为4—8克/日,美国为8—11克/日,对于吃素食的人来说,英国为12—24克/日,美国为22—35克/日。若以排便量比较,摄取低纤维食物的英国大学生为
The so-called dietary fiber generally refers to substances that cannot be broken down by digestive enzymes. The crude fiber in the food composition table refers to the residue that was treated with 1.25% sulfuric acid solution and 1.25% sodium hydroxide solution, so the dietary fiber is 2-4 times of the crude fiber. With the civilization of human life, people’s intake of dietary fiber also decreases. For example, in the United Kingdom, it is 4-8 grams/day, and in the United States, it is 8-11 grams/day. For those who eat vegetarian food, the United Kingdom has 12 24 g/day, the United States is 22-35 g/day. If the amount of defecation is compared, British college students who take low-fiber foods are