Journal
RSC ADVANCES
Volume 11, Issue 16, Pages 9572-9585Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra10671b
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Smart edible coating films, specifically chitosan-beeswax based film with added pollen grains, showed good physical and mechanical properties for preserving Le Conte pears postharvest. These films exhibited improved water resistance and lower WVTR values, while also increasing stiffness. Overall, the coated fruits successfully demonstrated reduced weight loss, decay, and softening rates, indicating the effectiveness of chitosan-beeswax/pollen grains as a safe and efficient coating for fruit preservation.
Smart edible coating films can be used in food packaging. For this application, they must have good physical and mechanical properties. Herein, chitosan-beeswax based film is used to preserve Le Conte pears postharvest. The chitosan-beeswax films were characterized using XRD, FT-IR, and SEM analysis. Moreover, all films showed good self-healing aptitudes ranging from 86.7 to 96.3. The film treated with pollen grains showed an enhanced water contact angle compared with the chitosan film. The chitosan-beeswax/pollen grain film exhibited a two-fold lower WVTR value compared to the chitosan film, and showed the tendency to increase the stiffness of the film. The elongation% at break was reduced from 35.81 to 14.09. Fruit quality parameters were determined in cold storage for 105 days during shelf life after a simulated marketing period of 7 days. All coated fruits successfully showed decrease in weight loss, decay and rate of softening. Therefore, chitosan-beeswax/pollen grains can be considered safe and effective coating for the fruit preservation.
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