Vitória Oliveira Pereira’s research while affiliated with Rio de Janeiro State University and other places

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Publications (1)


Fruit weight loss over 10 days of storage after the first application of the coatings
Visual aspects of fruits over time, after the first application of coatings. CW: chitosan + wax; CWZ: chitosan + wax + ZnOnano; CR: chitosan + resin; CRZ: chitosan + resin + ZnOnano. T: treatment
Fruit weight loss over 10 days of storage after the second application of the coatings
Visual aspects of fruits over time, after the second application of coatings. T: treatment; CR1: chitosan + resin; CRZ1: chitosan + resin + ZnOnano; control: no coating
Application of rosin resin and zinc oxide nanocomposite to chitosan for extending the shelf life of passion fruits
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December 2023

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99 Reads

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5 Citations

Jailton Ribeiro dos Santos Junior

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Vitória Oliveira Pereira

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Lourdes Maria Corrêa Cabral

Passion fruit (Passiflora edulis Sims f. flavicarpa DEG) is a tropical fruit widespread in Brazil, the largest producer and consumer in the world. As a climacteric fruit, it continues the ripening process after being detached from the plant, resulting in a short shelf life, with post-harvest problems, such as wilting and susceptibility to attack by microorganisms such as fungi. Therefore, this work aimed to develop chitosan-based coatings to be applied on passion fruit to maintain its post-harvest quality. Film forming solutions were prepared using chitosan (C) as the main polymer, carnauba wax (W) or rosin (R) as a hydrophobicity promoting agent and zinc oxide (ZnO) nanoparticles as an antimicrobial agent. The solutions were applied to passion fruit surfaces and the fruits were stored for 10 days at 22.5 °C and 82 RH for continuous evaluation. To determine the coating effect on ripening evolution during storage, the fruits were analysed for mass loss, texture, colour, pH, acidity, total soluble solids, and sugar contents. The post-harvest loss index was also determined during storage. The results showed that C + R coatings were more effective in protecting the fruits against weight loss, injury appearance and microorganism attacks. The visual appearance was also maintained. Increasing the resin concentration in the film forming solution provided better protection for the fruits against excessive weight loss and delayed the physicochemical changes related to maturation (acidity, pH, soluble solids, and firmness). Therefore, rosin-containing coatings provided the best results in postharvest applications to control passion fruit storage problems.

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Citations (1)


... In addition, the coatings containing MEO and CEO showed antibacterial properties, reduced visible fungal degradation, and reduced microbial load, including Botrytis cinerea or R. stolonifera. Nevertheless, there have been more recent developments in bio-nanocomposite ECF, such as egg protein-based nanocomposite coating with cellulose nanofibers and Nisin , chitosan-based coating with carnauba wax or rosin resin and zinc oxide nanoparticles dos Santos Junior et al. (2024), and gelatin-based coatings with red roselle extract, zinc oxide nanoparticles, and Litsea cubeba oil Pickering emulsion to preserve the quality of bananas, cherry tomatoes, mangoes, and passion fruits during postharvest storage. Interestingly, the above bio-nanocomposite ECF were also reported as safe and ecofriendly approaches to maintain the quality and reduce postharvest losses of F&V during storage. ...

Reference:

Global insights and advances in edible coatings or films toward quality maintenance and reduced postharvest losses of fruit and vegetables: An updated review
Application of rosin resin and zinc oxide nanocomposite to chitosan for extending the shelf life of passion fruits