Innovative natural antimicrobial natamycin incorporated titanium dioxide (nano-TiO2)/ poly (butylene adipate-co-terephthalate) (PBAT) /poly (lactic acid) (PLA) biodegradable active film (NTP@PLA) and application in grape preservation. (30th January 2023)

• Record Type: Journal Article
• Authors: Zheng, Yanli; Jia, Xiaoyu; Zhao, Zhiyong; Ran, Yalin; Du, Meijun; Ji, Haiyu; Pan, Yanfang; Li, Ziqin; Ma, Xiaowei; Liu, Yue; Duan, Lihua; Li, Xihong
• Is Part Of: Food chemistry. Volume 400(2023)
• Publication Date: 2023-01-30
• Subjects: Polylactic acid -- Poly (butylene adipate-co-terephthalate) -- Natamycin -- Biodegradable packaging film -- Grape preservation; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.134100
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Biodegradable NTP@PLA film was fabricated by melt processing. NTP@PLA film exhibited the long-lasting inhibition on Penicillium expansum . NTP@PLA film displayed biodegradability in soil. NTP@PLA film displayed a strong control effect on the decay of postharvest grape. Abstract: Poly (butylene adipate- co -terephthalate) (PBAT)/polylactic acid (PLA) blended with compatibilizers (polycaprolactone, PCL; poly (ethylene glycol), PEG; titanium dioxide, nano-TiO2 ) (TP@PLA composites) were developed by melt processing. Natamycin incorporated into TP@PLA blend composites formed NTP@PLA films, which exhibited high tensile strength (24.1–43.5 MPa) and elongation at break (85.8–258.2 %), and exhibited good oxygen permeability, water vapor permeability, surface hydrophobicity and biodegradability. The in vitro results revealed that inhibition of Penicillium expansum cell growth of the NTP@PLA films with addition of 1.0 wt% natamycin reached 95.72 %. The NTP@PLA film with natamycin effectively reduced incidence of decay (1.52 %) on grapes, maintained their quality, and inhibited the growth of pathogenic fungi to up to 0.42 log cfu·g −1 . This study generates new insights into the preservation properties of antimicrobial NTP@PLA film, which endow it with great application potential as a novel and eco-friendly packaging material for the food industry.