The outer membrane of Shuanghui elbow ham is cellulose casing. What is cellulose? The vegetables we usually eat are mainly cellulose, and the bean dregs left by soybeans when they make tofu are mainly cellulose. From a chemical point of view, cellulose belongs to polysaccharide (glucose is monosaccharide, which can be directly absorbed by human body, while white sugar is disaccharide, which is absorbed after being converted into glucose in the body). Due to the decline of cecum function, polysaccharide can not be decomposed by human body, so it can not be digested and absorbed, and is excluded from the body together with other food residues.
Therefore, cellulose casing is neither nutritious nor harmful to human body, so there is no need to worry about the body at all. Cellulose can promote gastrointestinal motility. If people don't eat cellulose for a long time, it will have adverse effects on the gastrointestinal tract. Therefore, people should eat some green vegetables normally, which can not only get vitamins, but also increase cellulose and promote intestinal health.