التفاصيل البيبلوغرافية
| العنوان: |
Efficacy of antimicrobial treatments against Salmonella enterica on pork and Campylobacter jejuni on poultry |
| المؤلفون: |
González Sánchez, Sara Victoria, author, Belk, Keith E., advisor, Geornaras, Ifigenia, advisor, Delmore, Robert J., committee member, Weir, Tiffany L., committee member |
| بيانات النشر: |
Colorado State University. Libraries |
| سنة النشر: |
2020 |
| المجموعة: |
Digital Collections of Colorado (Colorado State University) |
| مصطلحات موضوعية: |
pork, peroxyacetic acid, antimicrobials, poultry, Campylobacter, Salmonella |
| الوصف: |
2020 Spring. ; Includes bibliographical references. ; Two studies were conducted to evaluate efficacy of antimicrobial treatments against Salmonella enterica on pork and Campylobacter jejuni on poultry. The first study was conducted to (i) evaluate decontamination efficacy of six chemical treatments when applied to pork jowls inoculated with Salmonella enterica and (ii) determine the antimicrobial efficacy of the test solutions against a high and low inoculum level of Salmonella. Chilled pork jowls were cut into 10 × 5 × 1 cm portions and were surface-inoculated on the skin side with a mixture of six S. enterica serotype strains of swine origin. The inoculation levels targeted were 6 to 7 log CFU/cm2 (high) and 3 to 4 log CFU/cm2 (low). Following inoculation, samples were left untreated (control) or were treated by spray application (10 s, 18 to 19 psi, 1.0 gpm flow rate) with water, a proprietary blend of sulfuric acid and sodium sulfate (SSS, pH 1.2), formic acid (1.5%), peroxyacetic acid (PAA, 400 ppm), PAA (400 ppm) acidified with acetic acid (1.5%), PAA (400 ppm) acidified with formic acid (1.5%), or PAA (400 ppm) acidified with SSS (pH 1.2). Samples were analyzed for inoculated Salmonella counts immediately after treatment application (0 h) and after 24 h of refrigerated (4°C) storage. Overall, all seven spray treatments were effective (P < 0.05) at reducing the high and low Salmonella inoculation levels. At the high inoculum level (6.2 log CFU/cm2), pathogen counts ranged from 5.4 (water; 0.8 log CFU/cm2 reduction) to 4.3 (PAA acidified with SSS; 1.9 log CFU/cm2 reduction) log CFU/cm2 for samples analyzed immediately after spray treatment. Salmonella counts obtained at the 0-h sampling time for treated samples inoculated at the low inoculum level (3.5 log CFU/cm2) ranged from 2.8 (water; 0.7 log CFU/cm2 reduction) to 1.8 (PAA acidified with SSS; 1.7 log CFU/cm2 reduction) log CFU/cm2. Thus, regardless of inoculum concentration, similar reductions of Salmonella populations were obtained immediately ... |
| نوع الوثيقة: |
text |
| وصف الملف: |
born digital; masters theses; application/pdf |
| اللغة: |
English |
| Relation: |
2020-; GonzalezSanchez_colostate_0053N_16037.pdf; https://hdl.handle.net/10217/208497 |
| الاتاحة: |
https://hdl.handle.net/10217/208497 |
| Rights: |
Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. |
| رقم الانضمام: |
edsbas.2A62BAD5 |
| قاعدة البيانات: |
BASE |