Ripening and postharvest quality of guavas treated with plant regulators

Sanches, Alex Guimarães; Feitosa, Elem Maria Ferreira

doi:10.22077/jhpr.2024.7828.1393

Document Type : Original Article

Authors

Postharvest Research Department, Acai CAACHI. Outeiro Road, Maracacuera (Icoaraci), Belem, PA, Brazil. ZIP code: 66815-555

https://doi.org/10.22077/jhpr.2024.7828.1393

Abstract

Purpose: Guava is a tropical and subtropical fruit recognized for its nutritional quality. However, o it is a climacteric fruit, that is, with high respiratory activity and ethylene production during ripening, it becomes extremely perishable under environmental conditions, requiring conservation technologies that allow its commercialization without compromising post-harvest quality during storage. Therefore, the objective of this study was to evaluate the effect of plant regulators (gibberellic acid – GA₃ and ethephon) on ripening and quality preservation during storage at room temperature. Research method: Physiologically mature guavas (stage 3) were harvested in a commercial orchard, selected and sanitized in a chlorinated solution, and immersed in the following solutions: distilled water (control), GA₃, and ethephon (150 mg.L^-1) for a period of 10 minutes and subsequently stored under room temperature conditions (28 ± 2 ºC) for 12 days with physical-chemical quality assessments carried out every three days. Findings: Treatment with GA₃ provided lower values of mass loss, soluble solids, titratable acidity, and total sugars, in addition to higher values of firmness and vitamin C of the fruits analyzed, while the opposite effect was observed in guavas treated with ethephon. In general, the postharvest application of GA₃ delays ripening, making it possible to extend marketing for up to 9 days, on the other hand, ethephon anticipates ripening, making them fully ripe after 6 days of storage. Research limitations: There were no limitations to carrying out this research. Originality/Value: This research's results support staggering the ripening of guava over time, allowing the fruit's commercialization period to be extended.

Graphical Abstract

Keywords

Main Subjects

Postharvest Biology and Technology

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Ripening and postharvest quality of guavas treated with plant regulators

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Volume 7, Issue 4 - Serial Number 28December 2024December 2024Pages 407-418

Volume 7, Issue 4 - Serial Number 28
December 2024
December 2024
Pages 407-418