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Natural Polymer: An Approach for the Formulations Used as Pharmaceutical Excipient

Rishi Kumar

Nature is blessed with numerous varieties of polymers. When two or more than two small molecule combines together they form large molecule. The process that is called as polymer synthesis is the process in which large molecule is composed of small molecule that are attached together in a monomeric unit to form the larger forms. The common example of this synthesis includes the formation of starch molecules by the combination of various glucose units. Cellulose is the most abundant organic compound. Its natural form is cotton and is obtain from the woolly parts of trees. Polysaccharide chitin is similar to cellulose. It is present in the cell walls of fungi and is the fundamental substance in the exoskeletons of crustaceans, insects and spiders. Gums are used as a pathological product. They are formed by injuring plant parts or under the un favorable condition such as drought, by break down of cell walls.