Intelligent indicator films based on cold plasma-modified chitosan loaded with curcumin-resveratrol nanoemulsions: pH-responsive mechanism, colorimetric performance and application for tilapia freshness monitoring.

Meng Qiu, Tingting Yang, Guanghua Xia, Jiamei Wang, Zhongyuan Liu, E Liao, Wei Xu, Liming Zhang, Wenmin Wu

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Article in Food chemistry: X, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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9 authors.

Meng QiuHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

Tingting YangHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

Guanghua XiaHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

Jiamei WangHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

Zhongyuan LiuHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

E LiaoSchool of Food Science and Engineering, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China.

Wei XuSchool of Food Science and Engineering, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China.

Liming ZhangHainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Seafood Processing of Haikou, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, Hainan 570228, China.

Wenmin WuHubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China.

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6 · The paper itself

Abstract

Food safety risks associated with spoilage and plastic packaging have driven the development of sustainable intelligent packaging systems. In this study, zein-curcumin-resveratrol‑sodium alginate nanoemulsions were incorporated into chitosan films to construct pH-responsive active indicator films. Cold plasma (CP) modification was applied to regulate surface properties and enhance sensing performance. CP modification increased surface roughness and active sites, improving the interaction between films and volatile amines. The 30 kV CP-modified film exhibited optimal comprehensive properties, with improved mechanical strength (tensile strength of 5.36 ± 0.18 MPa and elongation at break of 46.95 ± 3.14%), antioxidant activities (73.81 ± 1.50% for DPPH and 70.26 ± 1.41% for ABTS), pH responsiveness, barrier properties and UV protection. Moreover, colorimetric responses (ΔE and a* values) showed a significant positive correlation with tilapia TVB-N accumulation (R

Indexed as

Antioxidant activitypH-sensitive active filmPhysical propertiesPlasma modificationTilapia quality evaluation

Identifiers

PMID42840485

DOI10.1016/j.fochx.2026.104512

PMCPMC13639742

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