Journals / Kafkas Üniversitesi Veteriner Fakültesi Dergisi / 2013 / Cilt: 19 - Sayı: 5

Sütlü tatlılardan izole edilen Bacillus cereus suşlarının enterotoksijenik gen profillerinin multipleks PCR ile belirlenmesi

Determination of enterotoxigenic gene profiles of bacillus cereus strains isolated from dairy desserts by multiplex PCR

Pages
869–874
DOI
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⚡ TL;DR(Too Long; Didn't Read)

The results indicated that 30% (6/20) of B. cereus isolates contain three enterotoxic HBL complex encoding genes hblA, hblC and hblD, whereas 70% (14/20) had no hbl genes.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study was to investigate the presence of Bacillus cereus and to detect enterotoxigenic genes in dairy dessert samples utilising a multiplex PCR technique.
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Key Findings & Data:A total of 100 samples, 25 keskul, 12 tavuk gogsu, 12 kazandibi, 30 supangle, 4 profiteroles and 17 sutlac were analysed.
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Conclusion & Impact:The results indicated that 30% (6/20) of B. cereus isolates contain three enterotoxic HBL complex encoding genes hblA, hblC and hblD, whereas 70% (14/20) had no hbl genes.
🔬Design:Research Article
📍Scope:100 samples
⚙️Variables:Domain Parameters

Abstract

The aim of this study was to investigate the presence of Bacillus cereus and to detect enterotoxigenic genes in dairy dessert samples utilising a multiplex PCR technique. A total of 100 samples, 25 keskul, 12 tavuk gogsu, 12 kazandibi, 30 supangle, 4 profiteroles and 17 sutlac were analysed. B. cereus contamination was found in 7 of 100 (7.0%) samples including 3 (25%) tavuk gogsu, 2 (6.6%) supangle, 1 (4%) keskul and 1 (5.8%) sutlac. The average number of B. cereus was between 2.0×101 - 5.0×102 cfu/g in these dairy dessert samples. A total of 20 isolates were collected from the 7 positive samples. The results indicated that 30% (6/20) of B. cereus isolates contain three enterotoxic HBL complex encoding genes hblA, hblC and hblD, whereas 70% (14/20) had no hbl genes. In addition, all three enterotoxic NHE complex encoding genes, nheA, nheB and nheC, were detected in 40% (8/20), two nhe genes (nheA and nheB) were found in 45% (9/20) and one nhe gene (two nheA and one nheB) was found in 15% (3/20) of the isolates. The ctyK1 gene was not detected in any sample. The presence of B. cereus and their enterotoxigenic genes in dairy desserts may be a potential risk for public health.

Özet

Bu çalışmanın amacı sütlü tatlılarda Bacillus cereus varlığını araştırmak ve enterotoksijenik genleri multipleks PCR tekniğiyle belirlemektir. Bu amaçla 25 keşkül, 12 tavuk göğsü, 12 kazandibi, 30 supangle, 4 profiterol ve 17 sütlaç olmak üzere toplamda 100 örnek analiz edilmiştir. 3’ü tavuk göğsü (%25), 2’si supangle (%6.6), 1’i keşkül (%4) ve 1’i sütlaç (%5.8) olmak üzere toplamda 7 örnek (%7.0) B. cereus varlığı açısından pozitif bulunmuştur. Analiz edilen sütlü tatlı örneklerinde ortalama B. cereus sayısı 2.0×101 - 5.0×102 kob/g olarak tespit edilmiştir. 7 pozitif örnekten toplamda 20 izolat elde edilmiştir. Sonuçta, B. cereus izolatlarının %70’inin (14/20) hbl geni taşımadığı, %30’unun (6/20) üç enterotoksik HBL kompleksi kodlayıcı geni (hblA, hblC ve hblD) bulundurduğu saptanmıştır. Ayrıca yapılan incelemede, izolatların %40’ının (8/20) üç NHE kompleksi kodlayıcı geni (nheA, nheB ve nheC), %45’inin (9/20) iki nhe geni (nheA ve nheB) ve %15’inin (3/20) bir adet nhe geni (ikisi nheA ve biri nheB) içerdiği saptanmıştır. ctyK1 geni hiçbir örnekte belirlenememiştir. Sütlü tatlılarda B. cereus varlığının gıda zehirlenmelerine yol açarak halk sağlığı açısından potansiyel bir tehlike olabileceği düşünülmektedir.

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Cite This Article

ÇADIRCI, Ö., GÜCÜKOĞLU, A., GÜLEL, G. T., KEVENK, T. O., ALİŞARLI, M. (2013). Sütlü tatlılardan izole edilen Bacillus cereus suşlarının enterotoksijenik gen profillerinin multipleks PCR ile belirlenmesi. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 19 - Sayı: 5, 869–874. https://ajindex.com/articles/273679

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