• Login
    View Item 
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    •   Home
    • UA Graduate and Undergraduate Research
    • UA Theses and Dissertations
    • Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Assessing Efficacy of NanoCeram Filters For Virus Concentration From Water: Risk Assessment for Listeria and Salmonella in Food

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    azu_etd_11672_sip1_m.pdf
    Size:
    711.1Kb
    Format:
    PDF
    Download
    Author
    Soto Beltran, Johana Marcela
    Issue Date
    2011
    Keywords
    NanoCeram
    Queso Fresco
    Soil, Water & Environmental Science
    Filters
    Foodborne pathogens
    Advisor
    Gerba, Charles P.
    Pepper, Ian L.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Water quality, and therefore human health, may be significantly affected by the presence of pathogenic enteric microorganisms derived for improper disposal of wastewater to aquatic environments. Detection of waterborne viruses is complex due to the difficulties in concentrating the sample and then in detecting the virus by cell culture or molecular techniques. Methods used to concentrate enteric viruses from water have remained largely unchanged for nearly 30 years. The U.S. Environmental Protection Agency requires the use of 1MDS electropositive filters for concentrating enteric viruses from water; however, these filters are expensive for routine viral monitoring. The NanoCeram® filter, an electropositive cartridge filter, has been proposed as a new alternative for large volumes of water. The objective of the study was: to evaluate the effectiveness of NanoCeram® filters for the concentration of poliovirus-1 from wastewater samples and compare to 1MDS cartridge filters. This study suggested that NanoCeram® filters are a viable alternative to the use of 1MDS filters for viral monitoring in surface waters and wastewaters. L. monocytogenes outbreaks with Latin-style soft cheese have been well-documented; however, more information to characterize the human health risk associated with the consumption of queso fresco (QF) using unpasteurized milk is needed. The objectives of the study were: i) to evaluate the prevalence of Listeria, Escherichia coli, Salmonella and fecal coliforms in QF obtained from markets in the northwestern state of Sinaloa, Mexico, and ii) to address the human health impact associated with the consumption of QF contaminated with L. monocytogenes using quantitative microbial risk assessment (QMRA). The study suggested that QF produced in Culiacan, Sinaloa, Mexico have microbial loads above the maximum values recommended by the Official Mexican Regulations; and QMRA can be used to interpret microbial contamination data for impacts on public health.
    Type
    text
    Electronic Dissertation
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Soil, Water and Environmental Science
    Degree Grantor
    University of Arizona
    Collections
    Dissertations

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.