Chitosan-ginger essential oil nanoemulsions loaded gelatin films: A biodegradable material for food preservation.

Autor: Wang X; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China., Xue Z; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China., Sun Y; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China., Peng B; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China., Wu C; College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China., Kou X; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China. Electronic address: kouxiaohong@tju.edu.cn.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Nov; Vol. 280 (Pt 2), pp. 135791. Date of Electronic Publication: 2024 Sep 19.
DOI: 10.1016/j.ijbiomac.2024.135791
Abstrakt: The alarming issue of food waste, coupled with the potential risks posed by petroleum-based plastic preservation materials to both the environment and human health necessitate innovative solutions. In this study, we prepared nanoemulsions (NEs) of chitosan (CS) and ginger essential oil (GEO) and systematically evaluated the effects of varying NEs concentrations (0, 10 %, 30 %, 50 %) on the physicochemical properties and biological activities of gelatin films. These films were subsequently applied to blueberry preservation. The scanning electron microscopy confirmed that the NEs were well-integrated with the Gel matrix, significantly enhancing the performance of the Gel films, including improvements of mechanical properties (tensile strength from 7.71 to 19.92 MPa; elongation at break from 38.55 to 113.65 %), thermal, and barrier properties (water vapor permeability from 1.52 × 10 -9 to 6.54 × 10 -10  g·m/Pa·s·m 2 ). The films exhibited notable antibacterial and antioxidant activities due to the gradual release of GEO, thereby extending the storage life of blueberries. Moreover, the prepared composite films demonstrated excellent biodegradability and environmental friendliness, with the majority of the material decomposing within 30 days under soil microbial action. In conclusion, the active films loaded with NEs exhibit superior performance and hold significant potential for developing biodegradable materials for food preservation.
Competing Interests: Declaration of competing interest No conflicting relationship exists for any author.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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