Preparation of cellulose film in ionic liquid by high shearing and application in pineapple preservation

文献类型： 外文期刊

第一作者： Wei, Xiaoyi

作者： Wei, Xiaoyi;Zhang, Lixiu;Wang, Junhai;Li, Jihua;Zhou, Wei;Wei, Xiaoyi;Zhang, Lixiu;Wang, Junhai

作者机构：

关键词： cellulose film; ionic liquid; shearing force; preservation

期刊名称：MATERIALS RESEARCH EXPRESS （ 影响因子：1.62； 五年影响因子：1.618 ）

ISSN：

年卷期： 2020 年 7 卷 2 期

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收录情况： SCI

摘要： In this study, the pineapple leaf cellulose film was prepared in ionic liquid by high shearing force and used for fresh-cut pineapple preservation. First, cellulose was dissolved in ionic liquid (1-butyl-3-methylimidazolium chloride ([Bmim]Cl)) using a high shear mixer. The regenerated cellulose was characterized by scanning electron microscope (SEM), x-ray diffraction (XRD), fourier transformed infrared spectra (FT-IR), and thermo gravimetric analysis (TGA). Results showed that the cellulose was dissolved in ionic liquid at room temperature with a high regeneration rate of more than 95% and for less than 2 min. It was suggested that the network of cellulose was destroyed by high shearing force. Then the cellulose film was obtained by casting on the glass plates. The mechanical properties of the films were evaluated by extension test with the tensile strength of 34 MPa. The proposed film was used for fresh-cut pineapple packaging. Results showed that it could significantly decrease weight loss and maintain the firmness of the pineapple, and thus, improve the quality of the fruit during storage. The findings demonstrate a facile biodegradable packaging route to improve food sustainability and reduce waste.

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