Journal
CARBOHYDRATE POLYMERS
Volume 134, Issue -, Pages 726-731Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.08.073
Keywords
Nano titanium dioxide; SSPS film; Barrier properties; Antimicrobial properties; Mechanical properties
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This study describes a new polysaccharide-based bionanocomposite developed through solvent casting. Different concentrations (i.e., 0%, 1%, 3%, and 5% (w/w)) of nano titanium dioxide (TiO2-N) were incorporated into soluble soybean polysaccharide (SSPS), and the functional properties of the resultant SSPS films were estimated. Incorporation of TiO2-N into the SSPS matrix decreased water vapor permeability from 7.41 to 4.44 x (10(-11) g m(-1) s(-1) Pa-1) and oxygen permeability from 202 to 98 (cm(3) mu m m(-2) d(-1) atm(-1)). Moisture content also decreased, the glass transition temperature increased, and the mechanical properties and heat seal strength of the SSPS films improved. SSPS bionanocomposite films showed excellent antimicrobial activity against Escherichia coli and Staphylococcus aureus. In summary, TiO2-N shows potential use as a filler in SSPS-based films for the food and non-food industries. (C) 2015 Elsevier Ltd. All rights reserved.
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