Consolidating plant-based essential oils onto polysaccharides-based coatings: Effect on mechanisms and reducing postharvest losses of fruits

Chitosan/aloe vera gel coatings infused with orange peel essential oils for fruits preservation

“…The lowest density value was observed in the CTS/AVG/3 %OPEO treatment, which indicates that the addition of OPEO can decrease the mass of the solution. This might be due to the presence of limonene, linalool, and citral, in OPEO which may interact with CTS/AVG coating solution to reduce density ( Felicia et al, 2022a , Felicia et al, 2022b ). OPEO may also lower CTS/AVG coating solution density because essential oils are less dense than water or gel-based substances, therefore, the addition of OPEO could displace some of the volume in CTS/AVG coating solution, resulting in a decrease in density.…”

“…However, some drawbacks of plastics, such as the migration effect occurring within the foods during storage and their non-biodegradability, have caused a growing global awareness and posed adverse health effects to consumers and the environment ( Azman et al, 2021 ). Edible coatings, biopolymer-based packaging materials composing of polysaccharides, proteins, and lipids, provide numerous advantages as an alternative to non-biodegradable plastics, including providing protection to food products by acting as a barrier to external conditions, prolonging shelf life, sustaining the food quality, and are environmentally friendly packaging ( Felicia et al, 2022a , Felicia et al, 2022b ).…”

Chitosan Coating Incorporated with Carvacrol Improves Postharvest Guava (Psidium guajava) Quality

“…Carvacrol (5-isopropyl-2-methyl phenol), a monoterpene compound mainly extracted from oregano and thyme, has received considerable attention due to its broad-spectrum antimicrobial activity and GRAS certification and may act as a novel bio-preservative [20]. Incorporating natural essential oils into polysaccharide-based coatings provides an additional protective barrier to control the release rate and reduce the volatile/oxidation loss of essential oil [21] while simultaneously contributing to better barrier and mechanical properties of the coating [15]. Furthermore, by reducing the particle size of incorporated essential oils to the nanoscale through the emulsion, the specific surface area of oil droplets is significantly increased [22].…”