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

Authors :
Shijiao Qin
Yujia Wu
Hao Tian
Yun Liu
Huan Kan
Defa Hou
Xu Lin
Yunwu Zheng
Zhifeng Zheng
Can Liu
Source :
International Journal of Molecular Sciences, Vol 23, Iss 23, p 14732 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

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.

Details

Language :
English
ISSN :
14220067 and 16616596
Volume :
23
Issue :
23
Database :
Directory of Open Access Journals
Journal :
International Journal of Molecular Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.953a8c0840eb45ec95e9154bf8cccc46
Document Type :
article
Full Text :
https://doi.org/10.3390/ijms232314732