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Icariin-mediated photodynamic inactivation in antimicrobial packaging films for cherry preservation.

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Τίτλος: Icariin-mediated photodynamic inactivation in antimicrobial packaging films for cherry preservation.
Συγγραφείς: Yang L; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China; Northwest A&F University Shenzhen Research Institute, Shenzhen, Guangdong 518000, China., Zhang W; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China; Northwest A&F University Shenzhen Research Institute, Shenzhen, Guangdong 518000, China. Electronic address: zhangwt@nwsuaf.edu.cn., Su K; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Guo Z; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Li B; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Wang Y; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Guo Z; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Wang J; College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shanxi, China., Shao B; School of Food and Bioengineering, Food Microbiology Key Laboratory of Sichuan Province, Xihua University, Chengdu 610039, China. Electronic address: shaobingch@sina.com.
Πηγή: Food research international (Ottawa, Ont.) [Food Res Int] 2026 Oct 31; Vol. 242 (Pt 2), pp. 119904. Date of Electronic Publication: 2026 Jun 29.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Published on behalf of the Canadian Institute of Food Science and Technology by Elsevier Applied Science Country of Publication: Canada NLM ID: 9210143 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7145 (Electronic) Linking ISSN: 09639969 NLM ISO Abbreviation: Food Res Int Subsets: MEDLINE
Imprint Name(s): Original Publication: Ottawa, Ontario, Canada : Published on behalf of the Canadian Institute of Food Science and Technology by Elsevier Applied Science, c1992-
Ιατρικοί όροι (MeSH): Flavonoids*/pharmacology , Food Packaging*/methods , Food Preservation*/methods , Photosensitizing Agents*/pharmacology , Anti-Bacterial Agents*/pharmacology , Fruit*/microbiology, Staphylococcus aureus/drug effects ; Staphylococcus aureus/radiation effects ; Listeria monocytogenes/drug effects ; Listeria monocytogenes/radiation effects ; Food Microbiology/methods ; Gelatin/chemistry ; Polyvinyl Alcohol/chemistry ; Food Irradiation/methods ; Light
Περίληψη: Photodynamic antimicrobial technology based on natural functional molecules is increasingly being explored to address foodborne pathogen contamination in food preservation. Icariin (ICA), a natural bioactive flavonoid, has remained unexplored for its photodynamic potential. This study identifies ICA as a natural photosensitizer with photodynamic antibacterial activity and integrates it into active food packaging films for cherry preservation. Spectroscopic analyses confirmed the photoresponsiveness of ICA, with singlet oxygen (1O2) identified as the dominant reactive oxygen species. Under light irradiation, ICA achieved 99.92% inactivation of Staphylococcus aureus after 30 min and 99.96% inactivation of Listeria monocytogenes after 40 min, mainly through membrane permeabilization and intracellular leakage. To develop a safe and effective strategy for cherry preservation, ICA was incorporated into a polyvinyl alcohol/gelatin (PG) matrix to construct a photoresponsive ICA-PG film. ICA not only imparted photodynamic antibacterial activity, but also enhanced the optical, mechanical, and barrier properties of the film through hydrogen bond mediated network integration. Applied to cherries, the ICA-PG film suppressed microbial contamination, delayed softening and quality deterioration, preserved total soluble solids, pH, and firmness, and extended shelf life to 9 days. Overall, this work expands the functional scope of ICA and provides a promising route toward sustainable preservation strategies for cherries.
(Copyright © 2026 Elsevier Ltd. All rights reserved.)
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Contributed Indexing: Keywords: Cherry preservation; Icariin; Photodynamic antibacterial; Polyvinyl alcohol/gelatin composite film
Substance Nomenclature: 0 (Flavonoids)
VNM47R2QSQ (icariin)
0 (Photosensitizing Agents)
0 (Anti-Bacterial Agents)
9000-70-8 (Gelatin)
9002-89-5 (Polyvinyl Alcohol)
Entry Date(s): Date Created: 20260822 Date Completed: 20260822 Latest Revision: 20260822
Update Code: 20260823
DOI: 10.1016/j.foodres.2026.119904
PMID: 42632739
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1873-7145
DOI:10.1016/j.foodres.2026.119904