Some of the most useful hydrocolloids are cellulose derivatives such as methyl cellulose (MC), hydroxypropyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC) and carboxyl methyl cellulose (CMC). All these cellulose derivatives arewater soluble with good .lm-forming properties Alginate and pectin are widely used in food systemsto stabilize and to modify the rheology of food. The most useful property is gelation, which is formed by intermolecular association with polyvalent cations