Abstract: This article Contrast by studying the various gellan gum forming a single condition (auxiliary selection, concentration, drying temperature and time) and their corresponding differences in physical properties, establish the conditions for its single corresponding relationship between the physical properties of edible films, Then according to the required physical properties, and gradually to determine the nature of the physical demands edible gellan gum under the optimum preparation conditions of films. The results show that: gellan gum 0.2g, sodium alginate 0.5g, water-soluble starch 1.5g, CMC 0.2g, glycerol 2g, under 10000r/min homogeneous 15min, Ultrasonic treatment (45 ℃) 30min, under 75 ℃ gelatinization 1.5h, 50 ℃ blast dryer for 3h, the film gain the best mechanical strength.
Keywords:Gellan Gum;edible film;physical appearance.