Ion-Modified Starch Film Enables Rapid Detection of Spoiled Fruit Juices

文献类型： 外文期刊

第一作者： Qin, Shijiao

作者： Qin, Shijiao;Wu, Yujia;Liu, Yun;Kan, Huan;Hou, Defa;Lin, Xu;Zheng, Yunwu;Liu, Can;Tian, Hao;Zheng, Zhifeng

作者机构：

关键词： ion modified; starch film; drink spoilage; pH response; rapid determination

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 23 期

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收录情况： SCI

摘要： Juice, as a liquid foodstuff, is subject to spoilage and damage due to complications during transport and storage. The appearance of intact outer packaging often makes spoilage and damage difficult to detect. Therefore, it of particular importance to develop a fast, real-time material to evaluate liquid foodstuffs. In this paper, starch films with pH response characteristics are successfully prepared by inorganic ion modification by utilizing whole starch and amylopectin as raw materials. The mechanical properties, stability properties, hydrophilic properties and pH electrical signal response indices of the films are analyzed and measured. The films exhibit good electrical conductivity values with 1.0 mL of ion addition (10 mmol/L), causing the composite film to respond sensitively to solutions with varying pH values. In the test of spoiled orange juice, the full-component corn starch (CS) film has more sensitive resistance and current responses, which is more conducive for applications in the quality monitoring of juice. The results indicate that modified starch films can potentially be applied in the real-time monitoring of the safety of liquid foodstuffs.

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