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- W2905123721 abstract "Polypropylene (PP) was mixed with polypropylene-graft-maleic anhydride (PP-g-MA) to obtain a reactive blend (PP/PP-g-MA) and render it antimicrobial by the application of ε-poly(lysine) and styrene maleic anhydride copolymer (SMA) onto its surface through reactive blending. Infrared spectroscopy confirmed covalent attachment through imide ring coupling between ε-poly(lysine), SMA, and PP/PP-g-MA. The resulting antimicrobial plastic (PP-SMA-PL) was effective in aqueous suspensions against Escherichia coli K12 ATCC 47009 with or without UV-A light irradiation providing > 99.99% reduction, and against the same bacterium in apple juice providing ∼ 90% reduction under UV-A light. Fluorometric assays suggested that this enhanced effect may be caused by reactive oxygen species (ROS) generation. In addition, PP-SMA-PL showed effectiveness against Listeria innocua L2 inoculated in milk in a storage study under refrigeration for 21 days, providing ∼90% reduction as compared to the starting level of inoculum and 99.99%–99.999% lower microbial load as compared to the control inoculated milk at the end of the storage study. Scanning electron microscopy, energy dispersive X-Ray spectroscopy, infrared spectroscopy, and colorimetric analyses confirmed no deposition of bacteria or organic matter onto PP-SMA-PL during the storage period with milk, as well as no release of ε-poly(lysine) from the surface of PP-SMA-PL." @default.
- W2905123721 created "2018-12-22" @default.
- W2905123721 creator A5026732957 @default.
- W2905123721 date "2019-03-01" @default.
- W2905123721 modified "2023-10-09" @default.
- W2905123721 title "Antimicrobial polypropylene with ε-poly(lysine): Effectiveness under UV-A light and food storage applications" @default.
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- W2905123721 doi "https://doi.org/10.1016/j.lwt.2018.12.047" @default.
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