Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2019 / Cilt: 66 - Sayı: 1

An investigation on biocontrol of Escherichia coli O157:H7 by a bacteriophage cocktail in pastirma

Pastırmada Escherichia coli O157:H7’nin bakteriyofaj kokteyli ile biyokontrolünün araştırılması

Pages
7–11
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The bacteriophage cocktail consisting of phage M8AEC16 and phage M12BEC16 has been found to be effectively usable for biocontrol of E. coli O157:H7 in pastirma.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, it was aimed to investigate the biocontrol of Escherichia coli O157:H7 in pastirma (a traditional Turkish meat product produced and consumed without heat treatment) by bacteriophages.
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Key Findings & Data:A cocktail was prepared from two pre-characterized phages which were isolated from cattle slaughterhouse wastewaters and were found to have lytic activity against E. coli O157:H7.
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Conclusion & Impact:The bacteriophage cocktail consisting of phage M8AEC16 and phage M12BEC16 has been found to be effectively usable for biocontrol of E. coli O157:H7 in pastirma.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, it was aimed to investigate the biocontrol of Escherichia coli O157:H7 in pastirma (a traditional Turkish meat product produced and consumed without heat treatment) by bacteriophages. A cocktail was prepared from two pre-characterized phages which were isolated from cattle slaughterhouse wastewaters and were found to have lytic activity against E. coli O157:H7. The phage cocktail at a concentration of 109 pfu/ml was applied to pastirma slices which experimentally contaminated at 6,9 x 103 cfu/ml and incubated for one week at room temperature (22-24ºC). During the incubation period, reduction effects of bacteriophages on E. coli O157:H7 were investigated on certain times and days. As a result, the phage cocktail was able to reduce the bacterial count approximately 2 log cfu/g in the bacteriophage applied group, therefore the number of E. coli O157:H7 decreased and remained below the detection limit (< 10 cfu/g) during the experiment. The bacteriophage cocktail consisting of phage M8AEC16 and phage M12BEC16 has been found to be effectively usable for biocontrol of E. coli O157:H7 in pastirma.

Özet

Bu çalışmada, ısıl işlem görmeden üretilen ve tüketilen geleneksel bir Türk et ürünü olan pastırmada Escherichia coli O157:H7'nin bakteriyofajlarla biyokontrolünün araştırılması amaçlanmıştır. Bu amaçla, sığır mezbaha atık sularından izole edilen ve E. coli O157:H7'ye karşı litik etkinliğe sahip olduğu önceden belirlenmiş iki bakteriyofajdan oluşan bir faj kokteyli hazırlandı. 109 pob/ml konsantrasyondaki faj kokteyli, deneysel olarak 6,9 x 103 kob/ml düzeyinde kontamine edilen pastırma dilimlerine uygulandı ve bir hafta süresince oda sıcaklığında (22-24ºC) inkübasyona bırakıldı. İnkübasyon süresince, belirli saat ve günlerde yapılan E. coli O157:H7 sayımları ile fajların bakteri sayısında meydana getirdikleri redüksiyon değerleri belirlendi. Sonuç olarak, bakteriyofaj uygulanan grupta faj kokteylinin bakteri sayısını yaklaşık 2 log kob/g azalttığı, bu nedenle de deney süresince faj uygulanan grupta E. coli O157:H7 sayısının tespit sınırının (< 10 kob/g) altında kaldığı tespit edildi. Bu çalışma neticesinde, M8AEC16 ve M12BEC16'dan oluşan faj kokteylinin, pastırmada E. coli O157:H7'nin biyokontrolü amacıyla etkin bir şekilde kullanılabilir olduğu ortaya konuldu.

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Cite This Article

AYAZ, N. D., ÇUFAOĞLU, G., DERİNÖZ, A. N. (2022). An investigation on biocontrol of Escherichia coli O157:H7 by a bacteriophage cocktail in pastirma. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 66 - Sayı: 1, 7–11. https://ajindex.com/articles/444523

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References (15)

  1. Abuladze T, Li M, Menetrez MY, et al. (2008): Bacteriophages reduce experimental contamination of hard surfaces, tomato, spinach, broccoli, and ground beef by Escherichia coli O157:H7. Appl Environ Microbiol, 74, 6230-6238
  2. Aksu H, Özgen Arun Ö, Aydın A, et al (1999): Eschericiha coli O157:H7’nin hayvansal kökenli çeşitli gıda maddelerinde varlığı. Pendik Vet Mikrobiyol Derg, 30, 77-81
  3. Anany H, Chen W, Pelton R, et al. (2011): Biocontrol of Listeria monocytogenes and Escherichia coli O157:H7 in meat by using phages immobilized on modified cellulose membranes. Appl Environ Microbiol, 77, 6379-6387
  4. Arslan A (2013): Et muayenesi ve Et Ürünleri Teknolojisi. Medipres, Malatya
  5. Ayaz ND, Cufaoglu G, Ormeci E, et al. (2016): Presence of Staphylococcus aureus and Shiga toxigenic Escherichia coli O157:H7 in Raw Meat in Ağrı, Turkey. Int J Enteric Pathog, 4, e36523
  6. Ayaz ND, Gencay YE, Erol I (2014): Prevalence and molecular characterization of sorbitol fermenting and non-fermenting Escherichia coli O157: H7+/H7–isolated from cattle at slaughterhouse and slaughterhouse wastewater. Int J Food Microbiol, 174, 31-38
  7. Balpetek D, Gürbüz Ü (2010): Investigations on the presence of E. coli O157: H7 in some meat products. Eurasian J Vet Sci, 26, 25-31
  8. Bruttin A, Brüssow H (2005): Human volunteers receiving Escherichia coli phage T4 orally: a safety test of phage therapy. Antimicrob Agents Chemother, 49, 2874-2878
  9. Brüssow H, Kutter E (2005): Phage ecology. 129-163. In: E Kutter, A Sulakvelizde (Eds), Bacteriophages: biology and applications. CRC Press, Washington DC
  10. Büyükünal SK, Şakar FŞ, Turhan I, et al. (2016): Presence of Salmonella spp., Listeria monocytogenes, Escherichia coli 0157 and Nitrate-Nitrite Residue Levels in Turkish Traditional Fermented Meat Products (Sucuk and Pastirma). Kafkas Univ Vet Fak Derg, 22, 233-236
  11. Chan BK, Abedon ST, Loc-Carrillo C (2013): Phage cocktails and the future of phage therapy. Future Microbiol, 8, 769-783
  12. Erol İ (2007): Gıda Hijyeni ve Mikrobiyolojisi. Pozitif Matbaacılık, Ankara
  13. Erol I, Goncuoglu M, Ayaz ND et al. (2016): Comparison of prevalence and genetic diversity of Escherichia coli O157:H7 in cattle and sheep. J Microbiol Biotechnol Food Sci, 6, 808-812
  14. Gencay YE, Ayaz ND, Copuroglu G, et al. (2016): Biocontrol of Shiga Toxigenic Escherichia coliO157:H7 in Turkish Raw Meatball by Bacteriophage. J Food Saf, 36, 120-131
  15. Guenther S, Huwyler D, Richard S, et al. (2009): V