Journal
JOURNAL OF FOOD ENGINEERING
Volume 240, Issue -, Pages 191-198Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jfoodeng.2018.07.023
Keywords
Chitosan; Quinoa protein; Nanoparticles; Edible films; Food packaging
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Funding
- INNOVA CORFO Project [12IDL-13621]
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The aim of this work was to improve the performance of quinoa protein/chitosan edible films on the extension of postharvest life of blueberries and tomato cherries by addition of chitosan thymol nanoparticles prepared by ionic gelation. These nanoparticles were effective at inhibiting the mycelial growth of Botrytis cinerea. Films with nanoparticles were significantly more effective in reducing water vapour permeability than were films with sunflower oil and film control without nanoparticles. Films with nanoparticles were applied as an internal coating to a polyethylene terephthalate (PET) clamshell container to store blueberries and tomato cherries, and the weight loss was evaluated. The weight loss for both foods stored in modified PET clamshells was significantly lower than that in the unmodified PET clamshell during storage at 7 degrees C and 85% RH for 10 days. Thus, chitosan thymol nanoparticles have a potential application as an antimicrobial for preservation of fresh fruits and as a water vapour barrier when these particles are added into chitosan-quinoa protein films.
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