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Antimicrobial Efficacy and Life Cycle Impact of Silver-Containing Food Containers Yuqiang Bi, Edward Westerband, Absar Alum, Frank C. Brown, Morteza Abbaszadegan, Kiril D. Hristovski, Andrea L Hicks, and Paul Westerhoff ACS Sustainable Chem. Eng., Just Accepted Manuscript • DOI: 10.1021/ acssuschemeng.8b02639 • Publication Date (Web): 28 Aug 2018 Downloaded from http://pubs.acs.org on September 2, 2018
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ACS Sustainable Chemistry & Engineering
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Antimicrobial Efficacy and Life Cycle Impact of Silver-Containing Food Containers
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Yuqiang Bi§⸸*, Edward I. Westerband‡⸸, Absar Alum§, Frank C. Brownф, Morteza
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Abbaszadegan§, Kiril D. Hristovskiф, Andrea L. Hicks‡, Paul K. Westerhoff§ §
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School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287, United States
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Civil and Environmental Engineering Department, University of Wisconsin-Madison, 53706, United States
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ф
The Polytechnic School, Ira A. Fulton Schools of Engineering, Arizona State University, 7171 Sonoran Arroyo Mall, Mesa, AZ, 85212
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*Corresponding Author Information
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ISTB 4, 781 E. Terrace Mall, Tempe, AZ, 85281, Tel: 480-727-2914, Fax: 608-262-5199, email:
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[email protected] 23
1 ACS Paragon Plus Environment
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ABSTRACT: Food loss and waste due to spoilage represents a critical global challenge to
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sustainable food consumption and production in a resource constrained world. Silver (Ag) has
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been used in food storage applications to reduce the food spoilage rate through its antimicrobial
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properties. However, the efficacy and safety of commercial silver-treated food storage containers
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are not well characterized regarding the potential life cycle implications of their design and
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application. This study aims to determine the antimicrobial efficacy and quantify silver leaching
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from a commercial container product containing micronized silver particles over simulated
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washing and end-of-life landfill disposal. The leached silver results were then used for
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examining the environmental impacts of the product at 10 impact categories. With a loading of
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8.8 ± 0.6 Ag µg/g in polymer matrix, the silver-containers were ineffective in inhibiting the
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growth of common foodborne pathogens. After four washing cycles, the containers only released
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