The use of essential oil embedded in polylactic acid/chitosan-based film for mango post-harvest application against pathogenic fungi
Mango has a high global demand. Fruit fungal disease causes post-harvest mango and fruit losses. Conventional chemical fungicides and plastic prevent fungal diseases but they are hazardous to humans and the environment. Direct application of essential oil for post-harvest fruit control is not a c...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Published: |
Multidisciplinary Digital Publishing Institute
2023
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| Online Access: | http://psasir.upm.edu.my/id/eprint/109257/ https://www.mdpi.com/2073-4360/15/12/2722 |
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| Summary: | Mango has a high global demand. Fruit fungal disease causes post-harvest mango and fruit
losses. Conventional chemical fungicides and plastic prevent fungal diseases but they are hazardous
to humans and the environment. Direct application of essential oil for post-harvest fruit control is
not a cost-effective approach. The current work offers an eco-friendly alternative to controlling the
post-harvest disease of fruit using a film amalgamated with oil derived from Melaleuca alternifolia.
Further, this research also aimed to assess the mechanical, antioxidant, and antifungal properties
of the film infused with essential oil. ASTM D882 was performed to determine the tensile strength
of the film. The antioxidant reaction of the film was assessed using the DPPH assay. In vitro and
in vivo tests were used to evaluate the inhibitory development of the film against pathogenic fungi,
by comparing the film with different levels of essential oil together with the treatment of the control
and chemical fungicide. Disk diffusion was used to evaluate mycelial growth inhibition, where the
film incorporated with 1.2 wt% essential oil yielded the best results. For in vivo testing of wounded
mango, the disease incidence was successfully reduced. For in vivo testing of unwounded mango
to which the film incorporated with essential oil was applied, although some quality parameters
such as the color index were not significantly affected, weight loss was reduced, soluble solid content
was increased, and firmness was increased, compared to the control. Thus, the film incorporated
with essential oil (EO) from M. alternifolia can be an environmentally friendly alternative to the
conventional approach and the direct application of essential oil to control post-harvest disease
in mango. |
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