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    Emulsified blend film based on konjac glucomannan/carrageenan/camellia oil: Physical, structural, and water barrier properties

    Year: 2021

    Journal: Carbohydr. Polym., Volume 251, JAN 1

    Authors: Zhou, Xi; Zong, Xinxiang; Wang, Shanglong; Yin, Cong; Gao, Xueqin; Xiong, Guoyuan; Xu, Xinglian; Qi, Jun; Mei, Lin

    Organizations: Huangshan Science and Technology Plan Project [2018KN-02]; third Batch of Industrial Innovation Team in Northern Anhui (the Processing Innovation Team of High-Quality Low-temperature Meat Products), Anhui Agricultural University 2020 Graduate Student Innovation Fund [2020ysj-37]; Anhui Provincial Major Technology Special Projects [17030701021, 17030701036]; third Batch of Industrial Innovation Team in Northern Anhui (the Processing)

    Keywords: konjac glucomannan; kappa-carrageenan; camellia oil; characterization; hydrophobicity; water vapor adsorption

    The objective of this study was to develop a new hydrophobic film based on konjac glucomannan and kappa-carrageenan (KGM-KC) incorporating camellia oil (CO) (2, 4, and 6 %). CO was directly emulsified as a dispersed phase into KGM-KC matrix. The physical, structural, and water barrier properties of the film were studied. The results of Fourier transform infrared and scanning electron microscopy suggested that CO was successfully distributed in KGM-KC matrix by emulsification. Contact angle of the film indicated that addition of CO increased the hydrophobicity and water-resistance properties of film, which corresponding to the moisture content, total soluble mass, water vapor permeability, water vapor adsorption kinetics and water vapor adsorption isotherms. Addition of CO by emulsification improved thermal stability of film, optical properties, and mechanical properties. In conclusion, the incorporation of CO by emulsification is an effective and promising pathway to improve the properties of polysaccharide-based film.
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