Development of plasticized edible films from Opuntia ficus-indica mucilage: A comparative study of various polyol plasticizers
2018; Elsevier BV; Volume: 190; Linguagem: Inglês
10.1016/j.carbpol.2018.02.085
ISSN1879-1344
AutoresRim Gheribi, Laura Puchot, Pierre Verge, Najeh Jaoued-Grayaa, Mohamed Mezni, Youssef Habibi, Khaoula Khwaldia,
Tópico(s)Polysaccharides Composition and Applications
ResumoMucilage polysaccharide was extracted from Opuntia ficus-indica cladodes (Cactaceae) and its composition was determined by sugar analysis using HPLC-RID and its structural features were elucidated by FTIR and 1H and 13C NMR. Films from the extracted mucilage were loaded at 40% (w/w) with glycerol, sorbitol, PEG 200 or PEG 400. The physical, thermal, mechanical and barrier properties of the obtained films were investigated. The highest water vapor barrier properties of plasticized mucilage films were obtained with sorbitol reaching water vapor permeability (WVP) values up to 3 times lower than the other films. The tensile strength (TS) values of films plasticized with PEG 200 and sorbitol were about 2 times higher than those of glycerol-plasticized films. The significant effect of polyol type plasticizers on the different properties of mucilage edible films was related to their structural features that promote different interactions with mucilage polysaccharides as demonstrated by FTIR and thermal properties.
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