Development of an antimicrobial photodynamic poly(3-hydroxybutyrate-co-3-hydroxyvalerate) packaging film for food preservation. (December 2021)

• Record Type: Journal Article
• Authors: Le, Truong Dang; Phasupan, Pimonpan; Visaruthaphong, Kanet; Chouwatat, Patcharida; Thi Thu, Vu; Nguyen, Loc Thai
• Is Part Of: Food packaging and shelf life. Volume 30(2021)
• Publication Date: 2021-12
• Subjects: Photodynamic treatment -- Photosensitizer -- Aloe emodin -- Antimicrobial -- Poly(3-hydroxybutyrate-co-3-hydroxyvalerate); Food -- Packaging -- Periodicals; Food -- Preservation -- Periodicals; Food -- Packaging; Periodicals; 664.0905
• DOI: 10.1016/j.fpsl.2021.100749
• Languages: English
• ISSNs: 2214-2894

Abstract

Highlights: Photodynamic film based on aloe emodin and PHBV was developed. Antimicrobial effect was significant on the surface of the film and food products. Bacterial inactivation kinetics on the film surface was established. Physicochemical properties of the film were maintained after repeated treatments. Abstract: In this study, a packaging film based on aloe emodin (AE)-incorporated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was developed. The film can inactivate contaminated bacteria through the photoactivation of aloe emodin under blue light (400 nm–500 nm). The fabrication process and key factors affecting the performance of the material were investigated. The results showed that the film exhibited high bactericidal effect against Escherichia coli with 4.7 ± 0.2 log reduction at the AE:PHBV ratio of 540.48 μg/g, and radiant fluence of 21.6 J/cm 2 . The addition of AE did not affect water contact angle, mechanical properties, and microscopic structure of the film. However, slight reduction in antimicrobial activity was observed after repeated treatments. The film was also tested on selected food surfaces including fresh-cut papaya, pork bologna, and epidermis surface of pork belly with noticeable bacterial inactivation. The developed film can be used as a novel active packaging material for food preservation.