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CuO nanoparticles/Indonesian cedarwood essential oil‐loaded chitosan coating film: characterisation and antifungal improvement against Penicillium spp.
Author(s) -
Wardana Ata Aditya,
Kingwascharapong Passakorn,
Tanaka Fumina,
Tanaka Fumihiko
Publication year - 2021
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.15195
Subject(s) - penicillium digitatum , materials science , chitosan , coating , zeta potential , composite number , penicillium italicum , biocompatibility , scanning electron microscope , fourier transform infrared spectroscopy , chemical engineering , nanoparticle , nuclear chemistry , composite material , nanotechnology , antifungal , chemistry , metallurgy , microbiology and biotechnology , biology , engineering
A novel formulation of composite coating comprising 0.8% chitosan (Chi) incorporating 0.025% CuO nanoparticles (CuO) and 0.5% Indonesian cedarwood essential oil (CEO) was fabricated by casting method. Fourier transform infrared, confocal laser scanning microscopy and scanning electron microscopy analyses were employed to characterise the biocompatibility of each formulation. Additionally, the physico‐chemically properties of the composite coatings were characterised. The colour ( L* ), light transmission, zeta potential and roughness of Chi were significantly ( P < 0.05) altered negatively by the presence of CuO or CEO; the colour ( a*, b* and ∆E ), apparent viscosity and transparency also changed positively as a consequence of CuO and CEO incorporation. The antifungal features of a pure Chi coating against Penicillium italicum and Penicillium digitatum were improved synergistically by CuO and CEO, confirmed by in vitro and in vivo assays. Composite coatings obtained in this work may have potential applications for active primary food packaging, particularly for fresh postharvest commodities.