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Preparation and characterization of antioxidant and pH-sensitive films based on chitosan and black soybean seed coat extract

Wang, Xingchi, Yong, Huimin, Gao, Li, Li, Lulu, Jin, Meijuan, Liu, Jun·2019·Food Hydrocolloids

Abstract

Abstract Antioxidant and pH-sensitive chitosan based films were developed by incorporating different amounts of black soybean seed coat extract (BSSCE). Spectroscopic analysis showed the main anthocyanins in BSSCE were cyanidin-3-O-galactoside (21.38%), cyanidin-3-O-glucoside (63.30%) and peonidin-3-O-glucoside (11.92%). Incorporation of BSSCE could greatly alter the barrier, optical and mechanical properties of chitosan film. Notably, chitosan-BSSCE films presented better water vapor and UV–vis light barrier properties and higher mechanical strength than chitosan film. However, chitosan-BSSCE films exhibited lower moisture content and transparency than chitosan film. Among all films tested, chitosan-BSSCE film containing 15 wt% of BSSCE on chitosan basis exhibited the best performance. Scanning electron microscopy showed BSSCE was uniformly distributed in chitosan-BSSCE films. Fourier transform infrared spectra of chitosan-BSSCE films further revealed chitosan could interact with BSSCE through non-covalent bonds. Importantly, chitosan-BSSCE films showed dose- and time-dependent 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity. Moreover, color variations were observed in chitosan-BSSCE films by changing pH. Results suggested chitosan-BSSCE films could be used as promising antioxidant and visible pH-sensing food packing materials.

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Metadata

Authors
Wang, X., Yong, H., Gao, L., Li, L., Jin, M., & Liu, J.
Venue
Food Hydrocolloids
Publisher
Elsevier BV
Published
2019-04
Volume
89
Pages
56-66
ISSN
0268-005X (ISSN-L)
OpenAlex
W2896645685
Cited by
620
References
45
FWCI
10.09
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Preparation and characterization of antioxidant and pH-sensitive films based on chitosan and black soybean seed coat extract. https://app.cochat.ai/papers/10.1016/j.foodhyd.2018.10.019
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Wang, X., Yong, H., Gao, L., Li, L., Jin, M., & Liu, J. (2019). Preparation and characterization of antioxidant and pH-sensitive films based on chitosan and black soybean seed coat extract. Food Hydrocolloids. https://doi.org/10.1016/j.foodhyd.2018.10.019

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