The effect of chitosan edible coating on the respiration rate and ethylene production of guava

Abstract

Chitosan edible coatings have gained considerable attention for their ability to enhance the postharvest quality and shelf life of fruits, including guava (Psidium guajava L.). This review comprehensively analyzes recent studies on the impact of chitosan-based coatings on the respiration rate and ethylene production of guava during storage. By acting as a semi-permeable barrier, chitosan coatings can modify the internal atmosphere of the fruit, thereby reducing respiration and delaying ripening. This review synthesizes findings from multiple studies, discussing the mechanisms involved, benefits, challenges, and future research directions in the agricultural context.