Bazı Geleneksel Türk Gıdalarından Laktik Asit Bakterilerinin İzolasyonu
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Date
2021
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Abstract
Amaç: Bu çalışma ülkemizde geleneksel yöntemlerle üretilen gıda ürünlerindenlaktik asit bakterilerinin izolasyonunu ve tanımlanmasını sağlamak amacıylayapılmıştır.Materyal ve Yöntem: Çalışma kapsamında Van otlu peynir ve ekşi hamur örneğikullanılmıştır. Bu örnekler içerdikleri laktik asit bakterileri için çalışılmış vetanımlanmaları için biyokimyasal ve PCR bazlı moleküler biyolojik tekniklere tabitutulmuşlardır. Biyokimyasal testler kapsamında örnekler, Gram reaksiyonları,katalaz aktivitesi, gaz üretimi, 10oC ve 45oC'de, %6 ve %16 NaCl konsantrasyonda,pH 4.4 ve pH 9.6’da gelişim göstermeleri açısından incelenmiştir. Moleküler biyolojideneyleri kapsamında ise tür ve suş düzeyinde tanımlama için PCR-RFLP, 16SrRNA gen dizileme ve RAPD-PCR teknikleri kullanılmıştır.Araştırma Bulguları: Bir dizi mikrobiyolojik deneylerin sonucunda 26 adet bakteripotansiyel laktik asit bakterisi olarak izole edilmiştir. Bunlardan 25 adedininLactobacillus, Pediococcus ve Enterococcus cinslerine ait olduğu tespit edilmiş vetür ve suş düzeyinde tanımlanmaları sağlanmıştır. Kalan bir adet izolat iseStaphylococcus hominis olarak tanımlanmıştır.Sonuç: Çalışmamız sonucunda 25 adet laktik asit bakterisi gen dizileme ve RAPDPCR teknikleri kullanılarak tür ve suş düzeyinde başarıyla tanımlanmıştır.
Objective: The objective of this study was to isolate and identify lactic acid bacteria from traditionally produced food samples in Turkey. Material and Methods: Traditional sourdough and herb cheese sample were used for the study. The samples were studied to determine their lactic acid bacteria content, and subjected to biochemical and PCR-based molecular biology techniques for identification and typing purposes. The samples were studied for their Gram reaction, catalase activity, gas production, growth at 10o C and 45o C, 6% and 16% NaCl and pH 4.4 and pH 9.6 for the biochemical tests. For the molecular biology experiments, PCR-RFLP, 16S rRNA gene sequencing and RAPD-PCR were performed to identify organisms at the species and strain level. Results: Upon completion of a series of microbiology experiments, a total of 26 potential lactic acid bacteria were isolated. Among those, 25 of them belonged to the genera Lactobacillus, Pediococcus and Enterococcus they were further identified at species and strain level. The remaining isolate was identified as Staphylococcus hominis. Conclusion: Identification of 25 lactic acid bacteria at species and strain level was successfully achieved using gene sequencing and RAPD-PCR.
Objective: The objective of this study was to isolate and identify lactic acid bacteria from traditionally produced food samples in Turkey. Material and Methods: Traditional sourdough and herb cheese sample were used for the study. The samples were studied to determine their lactic acid bacteria content, and subjected to biochemical and PCR-based molecular biology techniques for identification and typing purposes. The samples were studied for their Gram reaction, catalase activity, gas production, growth at 10o C and 45o C, 6% and 16% NaCl and pH 4.4 and pH 9.6 for the biochemical tests. For the molecular biology experiments, PCR-RFLP, 16S rRNA gene sequencing and RAPD-PCR were performed to identify organisms at the species and strain level. Results: Upon completion of a series of microbiology experiments, a total of 26 potential lactic acid bacteria were isolated. Among those, 25 of them belonged to the genera Lactobacillus, Pediococcus and Enterococcus they were further identified at species and strain level. The remaining isolate was identified as Staphylococcus hominis. Conclusion: Identification of 25 lactic acid bacteria at species and strain level was successfully achieved using gene sequencing and RAPD-PCR.
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Keywords
Mikrobiyoloji, Gıda Bilimi Ve Teknolojisi, Biyoloji, Beslenme Ve Diyetetik
Fields of Science
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WoS Q
Scopus Q
Source
Ege Üniversitesi Ziraat Fakültesi Dergisi
Volume
58
Issue
1
Start Page
87
End Page
95
