mehri karim

Nanomaterials produced from natural recyclable resources have increasingly been used in both science and technology. Cellulose nanostructures possess interesting properties such as renewability, low toxicity, biocompatibility, biodegradability, availability, and low cost, and therefore are good materials for many usages in food systems. Nanostructures of cellulose are divided into four groups such as cellulose nanocrystals, nanofibrils, hydrogels, and bacterial celluloses. The kinds of preparation methods result in various products, which lead to diverse mechanical, physical, chemical, thermal, and biological properties. The possibility of surface modification of cellulose nanostructures has been used in many applications such as encapsulation, enzyme immobilization, filtration, and development of edible films. In this chapter, classification of nanocellulose; preparation methods; physical, chemical, and biological properties; some surface modification methods; potential application...