Chitosan delays ripening and ROS production in guava (Psidium guajava L.) fruit

•The chitosan is beneficial in extending postharvest life of guava fruit quality.•Chitosan is a reality of fruit conservation technology.•The ripening of guava is retarded by chitosan.•The chitosan coating induced antioxidant activities. Guava is a typically tropical fruit highly perishable with a s...

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