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  1. Nur Hanani ZA, Aelma Husna AB
    Int J Biol Macromol, 2018 Jul 15;114:710-716.
    PMID: 29601881 DOI: 10.1016/j.ijbiomac.2018.03.163
    κ-Carrageenan films derived from Euchema cottoni containing different types and concentrations of emulsifier were developed. Film formation without the addition of emulsifier was used as a control. The physical, mechanical, optical and microstructural properties of these films were determined. Different types of emulsifiers (Tween 20, Tween 40 and Tween 80) exerted significant effects (P≤0.05) on the thickness, moisture content and opacity of the films. Additionally, Tween 20 and Tween 40 with concentrations from 0.1 to 0.5% (v/v) significantly (P≤0.05) improved the tensile strength of the films, ranging from 7.35 to 13.83MPa. The water vapor permeability of the carrageenan films was significantly (P≤0.05) affected by both factors. Increasing the emulsifier concentration also caused an increment in the number of lipid droplets contributing to a smooth surface. Therefore, this study suggests that different types and concentrations of emulsifiers play essential roles in determining the physical properties of carrageenan films.
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