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- Title
Characterization of a new biodegradable edible film based on semolina loaded with nano kaolin.
- Authors
Jafarzadeh, S.; Alias, A. K.; Ariffin, F.; Mahmud, S.; Najafi, A.; Sheibani, S.
- Abstract
Biodegradable packaging, such as edible coatings and films, is widely used because it is free from synthetic substances and does not lead to environment pollution. Therefore, this industry is continuously growing. This study aimed to prepare and characterize biodegradable films loaded with nano kaolin. Semolina protein films were prepared and plasticized with sorbitol/glycerol by the casting method. Nano kaolin with 0%, 1%, 2%, 3%, 4% and 5% (w/w) was added to the films before casting them. The films were dried at controlled conditions. The effects of the addition of nanoparticles were measured on water absorption capacity (WAC), density, ultraviolet transmittance, heat sealability, and film morphology. Results showed that the WAC and density of the films decreased by increasing the nano kaolin concentration. By contrast, the seal strength for the semolina film was increased by incorporating a low percentage of nano kaolin. The X-ray diffraction curves of the semolina film incorporated with kaolin exhibited broad reflection, thus indicating that the kaolin nanosize matches the transmission electron microscopy images. In summary, nano kaolin incorporation enhanced the physicochemical properties and heat sealability of semolina films, thereby indicating the potential application of these bionanocomposites to food-product packaging.
- Publication
International Food Research Journal, 2017, Vol 24, Issue 1, p304
- ISSN
1985-4668
- Publication type
Academic Journal