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چکیده
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A novel Bio-nano-copposite packaging with lower water vapor permeability rate, water solubility and high longitudinal strength was synthesized and its effect on preservation quality of strawberry fruits (Fragaria Camarosa ) was investigated during storage at 4 ◦C. The nano ZnO particles was homogenized by sonication and incorporated into wheat starch solutions at different concentrations ( 1%, 3%, 5%, and 7% w/w dried starch). Packages were prepared from nanocomposite films then filled with fresh strawberry, and then stored at 4C. tensile properties, water vapor permeability, water solubility, moisture content and Microbial stability were evaluated after 4, 8, 12, 16 and 20 days of being stored. Results showed significantly increasing in tensile properties and water vapor permeability, water solubility moisture content of the films were significantly decreased. ZnO- starch films exhibited excellent antimicrobial activity during the storage of strawberries.These properties suggest that ZnO nanorod has the potential as a filler in starch-based films for use as active packaging materials in the pharmaceutical and food industries.These data indicated that the nano-packaging might provide an attractive alternative to improve preservation quality of the strawberry fruits during extended storage.
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