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Application of novel zinc oxide reinforced xanthan gum hybrid system for edible coatings

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES(2020)

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Abstract
Zinc oxide (ZnO) encapsulated xanthan-based edible coating has been demonstrated in this paper for its main attribute of displaying superior anti-bacterial properties. The fabrication of microparticles was carried out through emulsion solvent evaporation route where ZnO particles get adsorbed onto xanthan gum matrix. Morphological analysis through TEM showed a flower like appearance for ZnO and core-shell morphology was observed for the hybrid system. The FT-IR analysis showed the successful encapsulation of ZnO into xanthan. To ensure the developed materials to be harmless for fruits and vegetables, the biocompatibility studies such as toxicity assay and blood compatibility studies were carried out. The results established that the hybrid micropartides were compatible to the blood cells and featured excellent cell viability upon treatment with human fibroblast cells. Finally a significant finding of this biocompatible hybrid coating on apples and tomatoes was the negligible weight loss for both in comparison to their uncoated fruits and vegetables under ambient conditions. (C) 2020 Published by Elsevier B.V.
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Key words
Zinc oxide,Xanthan Gum,Stearic acid,Edible nanocoating,Biocompatibility
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