Abstract
In the present study, a film based on the gelatin skin of tilapia (Oreochromis niloticus) was developed, using surfactants and adding plant extract of pitomba seed (Talisia esculenta). The aim was to investigate the mechanical and barrier properties of the cover, as well as its effectiveness in conserving papayas against diseases caused by fungi. The film presented tensile strength of 38.78 MPa, elongation of 120.49%, and water vapor permeability of 5.90 g.mm.h−1.m2.kPa−1 when equally composed of SDS and Tween 80, in a percentage of 40% in relation to the total mass of the film. The films lasted 12 d in an environment with a relative humidity of 75% (25 ºC), longer than the shelf life of papaya (limited to 8 d). With applying the film with the extract, the incidence of diseases such as anthracnose, fusariosis, and stem rot caused by these microorganisms in papaya was reduced.
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