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Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries

1
College of Light Industry & Food Engineering, Nanjing Forestry University, Nanjing 210037, China
2
College of Chemical Engineering, Nanjing Forestry University, Nanjing 200137, China
3
College of Forestry, Nanjing Forestry University, Nanjing 200137, China
*
Author to whom correspondence should be addressed.
Coatings 2022, 12(2), 254; https://doi.org/10.3390/coatings12020254
Received: 18 January 2022 / Revised: 5 February 2022 / Accepted: 9 February 2022 / Published: 15 February 2022
Essential oils are natural antibacterial substances and have potential value for application in fruit and vegetable packaging. In this study, Chinese fir essential oil (CFEO) was microencapsulated to prepare food packaging materials for the first time to overcome its volatilization and oxidation shortcomings and to obtain a sustained-release form of the oil. CFEO was effectively encapsulated in gelatin and chitosan using the complex coacervation method, and the encapsulation efficiency, microstructure, infrared spectrum and thermal stability of the microcapsules were evaluated. Experiments confirmed that the microcapsules had some antibacterial activity. A bioactive paper was developed by combining CFEO microcapsules (CFEO-Ms) with paper-based material using the film-forming property of polyvinyl alcohol (PVA). The coated paper showed good mechanical, air permeability and moisture permeability properties. Environmental scanning electron microscopy confirmed that CFEO-Ms bonded well with PVA and was successfully introduced into the paper fiber after coating, forming an obvious coating film on the surface to facilitate the continuous release of CFEO. The shelf life of strawberries was significantly prolonged when the PVA-coated paper mixed with 3% CFEO-Ms was used for packaging. The results demonstrated that the CFEO-Ms coated paper has the potential to become an effective packaging material for the preservation of strawberries. View Full-Text
Keywords: Chinese fir essential oil; microcapsule; coated paper; food packaging; strawberries Chinese fir essential oil; microcapsule; coated paper; food packaging; strawberries
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MDPI and ACS Style

Song, X.; Shi, L.; Liu, S.; Hou, C.; Zhu, K.; Cheng, Q.; Mei, L. Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries. Coatings 2022, 12, 254. https://doi.org/10.3390/coatings12020254

AMA Style

Song X, Shi L, Liu S, Hou C, Zhu K, Cheng Q, Mei L. Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries. Coatings. 2022; 12(2):254. https://doi.org/10.3390/coatings12020254

Chicago/Turabian Style

Song, Xiuli, Liuxin Shi, Su Liu, Chen Hou, Kai Zhu, Qiang Cheng, and Luyu Mei. 2022. "Development of Microcapsule Bioactive Paper Loaded with Chinese Fir Essential Oil to Improve the Quality of Strawberries" Coatings 12, no. 2: 254. https://doi.org/10.3390/coatings12020254

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