| Popis: |
The fruits of Hymenaea stigonocarpa have a sweet, starchy fibrous structure used as food among wild animals and man in the field. The study aimed to develop and evaluate a biodegradable packaging from the starchy aryl solution of the jatobá fruit (H. stigonocarpa). The amylaceous solution was obtained from the arils of H. stigonocarpa, the biodegradable film was prepared according to the casting technique. The physical-chemical characteristics for thickness (mm), humidity (%), water solubility (%), biodegradability time and transmittance (T%) were evaluated. Morphology by optical micrographic and scanning electron, mathematical modeling in 3D, and for the mechanical parameters of tensile strength, maximum tension, elongation and elasticity module. The results obtained for the biodegradable film were brown yellow color, aroma and homogeneity, thickness 0.27 mm, humidity 12.45%, solubility in water 57.48%, biodegradability of 100%, maximum and minimum transmittance 82.25 and 1.32 (T%), in the optical micrograph small imperfections were observed and in the scanning electron micrograph small cracks. The mathematical modeling in 3D presented a surprising result, which is an important device in the aid of imaging. The mechanical characteristics for maximum tension 3.17 N, rupture stress 1.34 MPa, elongation 2.99% and elasticity with 90.07 MPa presented satisfactory results comparable to other biodegradable films of native starch. Biodegradable packaging from Hymenaea stigonocarpa aryl has great potential for use as a food packaging. |
