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  1. Cellulose is not digested in the digestive system of man and other animals.
  2. It can withstand acidic hydrolysis.
  3. Though not digested, cellulose has great importance in human nutrition.
  4. It is a major constituent of fiber, the non-digestible carbohydrate.
  5. The function of dietary fiber includes decreasing the absorption of glucose and cholesterol from the intestines, besides increasing the bulk of feces.