کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8843529 | 1616228 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decontamination and survival of Enterobacteriaceae on shredded iceberg lettuce during storage
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Decontamination and survival of Enterobacteriaceae on shredded iceberg lettuce during storage Decontamination and survival of Enterobacteriaceae on shredded iceberg lettuce during storage](/preview/png/8843529.png)
چکیده انگلیسی
Enterobacteriaceae family can contaminate fresh produce at any stage of production either at pre-harvest or post-harvest stages. The objectives of the current study were to i) identify Enterobacteriaceae species on iceberg lettuce, ii) compare the decontamination efficiency of water, sodium hypochlorite (free chlorine 200â¯ppm), peroxyacetic acid (PA 80â¯ppm; Kenocid 2100®) or their combinations and ionizing radiation against Enterobacteriaceae on shredded iceberg lettuce and iii) determine the survival of Enterobacteriaceae post-treatment storage of shredded iceberg lettuce at 4, 10 and 25â¯Â°C, for up to 7 days. Klebsiella pneumonia spp. pneumonia, Enterobacter cloacae, Klebsiella oxytoca, Pantoea spp., Leclercia adecarboxylata and Kluyvera ascorbate were identified on iceberg lettuce. No significant difference (P⥠0.05) among Enterobacteriaceae survival after washing with water or sanitizing with sodium hypochlorite or Kenocid 2100® (reductionâ¯â¤â¯0.6 log CFU/g) were found. Combined sanitizer treatments were more effective against Enterobacteriaceae than single washing/sanitizing treatments. Sanitization of iceberg lettuce with combined washing/sanitizing treatments reduced Enterobacteriaceae by 0.85-2.24â¯CFU/g. Post-treatment growth of Enterobacteriaceae during storage on samples sanitized with sodium hypochlorite and Kenocid 2100® was more than on samples washed with water. The D10-value of Enterobacteriaceae on shredded iceberg lettuce was 0.21â¯KGy. The reduction of Enterobacteriaceae populations on iceberg after gamma radiation (0.6â¯KGy) was 3 log CFU/g, however, Enterobacteriaceae counts increased post-irradiation storage by 4-5 log CFU/g. Therefore, washing shredded iceberg lettuce with combined sanitizing treatment (sodium hypochlorite/sodium hypochlorite, sodium hypochlorite/Kenocid 2100®, or Kenocid 2100®/Kenocid 2100®) for total time of 6â¯min or exposing it to gamma irradiation (0.6â¯KGy) can decrease the risk of Enterobacteriaceae (reductionâ¯â¥â¯2 log). Post-washing storage of sliced iceberg lettuce (4, 10, 25â¯Â°C) could increase the risk of Enterobacteriaceae as their counts increased during storage even at low temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Microbiology - Volume 73, August 2018, Pages 129-136
Journal: Food Microbiology - Volume 73, August 2018, Pages 129-136
نویسندگان
Tareq M. Osaili, Akram R. Alaboudi, Heba N. Al-Quran, Anas A. Al-Nabulsi,