Abstract
SummaryThis study aimed to develop a novel antioxidant film for food packaging based on Cyperus esculentus starch and thymol. The mechanical, physicochemical and antioxidant properties of composite films were investigated. The C. esculentus starch showed good film‐forming properties. Incorporating of thymol improved the elongation at break and ultraviolet barrier property of the films, meanwhile decreased the moisture content of the films. Scanning electron microscopy showed good compatibility between starch matrix and thymol. The formation of hydrogen bonds between starch and thymol was confirmed by Fourier transform infrared spectroscopy and X‐ray diffraction. The composite films (3% thymol) exhibited higher antioxidant with DPPH scavenging capacity values of 73.22 ± 2.05% compared with control films. This study provided a potential unconventional starch for the preparation of bioactive films.
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