Optimization of Preparation Process for Potato Starch-Based Composite Films by Orthogonal Array Design and Determination of Packaging Properties

doi:10.7506/spkx1002-6630-201314016

Abstract

Abstract:

Potato starch-based composite films were prepared by casting using potato starch, pullulan, gelatin as filmforming
material, glycerol as plasticizer, calcium chloride as cross-linking agent. The effects of potato starch content,
pullulan-gelatin ratio, glycerol content, calcium chloride content, drying temperature on packaging properties of composite
films were explored. The optimal preparation conditions of potato starch-based composite films were investigated by range
analysis and variance analysis through orthogonal tests. The results showed that the optimal preparation conditions of potato
starch-based composite films were potato starch content of 70%, pullulan-gelatin ratio of 2:1, glycerol content of 10%, calcium
chloride content of 2%, and drying temperature of 50 ℃. The properties of composite films under the optimal conditions
revealed tensile strength of 23.93 MPa, elongation at break of 10.51%, water vapor permeability of 2.38 g•mm/(m2•d•kPa),
water-solubility of 25.55%, and light transmission rate of 84.66%. Compared with potato starch films, the mechanical
properties and moisture barrier performance of potato starch-based composite films were greatly improved.

Key words: potato starch, pullulan, gelatin, calcium chloride, technology, properties, edible film

WANG Li-qiang，JIA Chao，LU Li-xin，ZHANG Zhi-wei，ZHENG Qi-ming. Optimization of Preparation Process for Potato Starch-Based Composite Films by Orthogonal Array Design and Determination of Packaging Properties[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201314016.

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Optimization of Preparation Process for Potato Starch-Based Composite Films by Orthogonal Array Design and Determination of Packaging Properties

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