4.4 Article

EFFECT OF NANOCOMPOSITE PACKAGING CONTAINING AG AND ZNO ON REDUCING PASTEURIZATION TEMPERATURE OF ORANGE JUICE

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JOURNAL OF FOOD PROCESSING AND PRESERVATION
卷 36, 期 2, 页码 104-112

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WILEY-HINDAWI
DOI: 10.1111/j.1745-4549.2011.00558.x

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  1. Isfahan University of Technology

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Nanocomposite low-density polyethylene (LDPE) films containing Ag and ZnO nanoparticles were prepared by melt mixing process through the twin-screw extruder. Packages prepared from nanocomposite films were then filled with fresh orange juice, pasteurized (at 55 and 65C for 16 s) and then stored at 4C. Microbial stability, ascorbic acid (AA) content, browning index and color value of the juice were evaluated after 7, 28, 56, 84 and 112 days of being stored. The two-way interaction between heat treatment and packaging type on the characteristics of the orange juice was investigated. Consequently, application of LDPE nanocomposite packaging containing Ag markedly decreased the pasteurization temperature (65C) of orange juice by 10C. Moreover, the reduced degradation of AA was observed in orange juice, which was filled in nanocomposite packaging containing nano-ZnO.

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