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Edible films from mucilage of C ereus hildmannianus fruits: Development and characterization
Author(s) -
Damas Mayra Stéphanie Pascoal,
Pereira Junior Valdir Aniceto,
Nishihora Rafael Kenji,
Quadri Mara Gabriela Novy
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45223
Subject(s) - plasticizer , mucilage , ultimate tensile strength , glycerol , materials science , absorption of water , chemical engineering , thermal stability , polymer , contact angle , biopolymer , elongation , composite material , chemistry , botany , organic chemistry , engineering , biology
Mucilages are heteropolysaccharides with rich monosaccharide composition. They are capable of forming films that are brittle and fragile, and in order to obtain flexible materials, plasticizers must be added. The present study aims to evaluate the physicochemical properties of mucilage‐based films produced with Cereus hildmannianus and different glycerol concentrations by the casting technique. Transparent and yellowish films were obtained by the addition of glycerol, which also improved handleability, evidenced by increased elongation, and reduced tensile strength and Young's modulus. Thermal gravimetric analysis and differential thermal analysis revealed that glycerol presence reduced the thermal stability, showing the influence of a plasticizer over the polymer structure. Water absorption capacity and contact angle were reduced with the increase of plasticizer concentration; on the other hand, the water vapor permeability increased, as expected, due to the hydrophilic nature of glycerol. The results indicated the potential application of C. hildmannianus mucilage as a promising material to produce edible films. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45223.