The present invention relates to a method for forming a protective coating on a plant tissue by applying a first aqueous solution containing a crosslinking agent to a postharvest plant matter having an external surface that includes a first segment which is covered by natural skin and a second segment which has an exposed surface, wherein the first aqueous solution is applied at least upon the exposed surface of the second segment of the postharvest plant matter; and subsequently applying a second aqueous solution comprising a polysaccharide which is susceptible to crosslinking by the crosslinking agent at least upon the exposed surface of the second segment of the postharvest plant matter, thereby forming a protective coating on the exposed surface of the second segment of the postharvest plant matter due to crosslinking of the polysaccharide by the crosslinking agent.