Dietary fiber refers to edible carbohydrates and their analogues that cannot be digested by the human body. These substances cannot be digested and absorbed by the small intestine, but can be fermented in whole or in part in the large intestine. The ingredients include polysaccharides, oligosaccharides, lignin or Associated plant components. Dietary fiber includes cellulose, hemicellulose, lignin, pectin, gum, and resistant starch. Studies have shown that dietary fiber can balance human nutrition, regulate body function, and has obvious preventive and improving effects on constipation, colon cancer, diabetes, obesity, coronary atherosclerosis and other diseases. According to different solubility, dietary fiber can be divided into water-soluble dietary fiber (SDF) and water-insoluble dietary fiber (IDF). Insoluble dietary fiber includes cellulose, lignin and partial hemicellulose, which helps gastrointestinal motility and has prevention and treatment. The function of constipation. Constipation is a disease that is easily overlooked, but it has a great impact on physical and mental health. With the in-depth development of related scientific research, the rich nutritional value of bananas and good health care have been paid more and more attention. Banana has the function of laxative, but the substance and mechanism of action are not clear. Wang Juan et al reported the function of banana oligosaccharide and resistant starch in laxative. This paper takes banana insoluble dietary fiber as the research object and investigates its laxative function through animal experiments.
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