*4.1.2 Cellulose*

Cellulose and its derivatives are among the most abundant and widely used polymers in the packaging industry. Cellulose is a very important polymer in the food industry. It is the well-known biodegradable polysaccharide from which cellophane film can be made. There are numerous natural sources of cellulose, such as biowastes and agricultural wastes, which explains why it is readily available and at competitively low prices. From 1839 to 2021, all past and present studies have introduced the discovery of cellulose and its numerous functional properties; its use in the preservation of fruits and vegetables and in the preparation of various types of composite films notably [54].
