Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2020 / Cilt: 67 - Sayı: 4

Histidine and tyrosine decarboxylase activities of lactic acid bacteriain sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax)

Çipura (Sparus aurata) ile levrek (Dicentrarchus labrax) balıklarındaki laktik asit bakterilerinin histidin ve tirozin dekarboksilaz aktiviteleri

Pages
343–347
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was found that 12 out of 18 LAB (67%) isolates showed negative histidine and tyrosine decarboxylase activities.

📌 3 Key Takeaways

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Objective & Hypothesis:Biogenic amines (BAs) are formed by decarboxylation of amino acids, amination and transamination of aldehyde and ketone groups.
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Key Findings & Data:BAs play a significant role in determining the shelf life and quality of foods.
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Conclusion & Impact:It was found that 12 out of 18 LAB (67%) isolates showed negative histidine and tyrosine decarboxylase activities.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Biogenic amines (BAs) are formed by decarboxylation of amino acids, amination and transamination of aldehyde and ketone groups. The excess of BAs is harmful to human health. BAs play a significant role in determining the shelf life and quality of foods. Released type and amount of BAs depend on factors such as the quality of the raw material, the diversity of natural microbiota,processing and storage conditions. In fish, the release of BAs is affected primarily from microbial growth as well as other reasons and may cause poisoning. It was aimed to determine the possibility of histidine decarboxylase activity gene (hdc) and tyrosine decarbocylase activity gene (tyrdc) in lactic acid bacteria (LAB) which were isolated from sea bream and sea bass. A total of 18 Gram positive-catalase negative LAB was isolated from 84 fish samples from 14 different fish markets. It was found that 12 out of 18 LAB (67%) isolates showed negative histidine and tyrosine decarboxylase activities. While 2 out of 6 (11%) LAB isolates were determined positive only tyrosine decarboxylase and 4 of them (22%) were positive for histidine and tyrosine decarboxylase. As a result of the Polymerase Chain Reaction (PCR), 9 out of 12 LAB isolates (75%) were found to have histidine decarboxylase activity gene. As a result, the prevalence of histidine decarboxylase activity gene in the LAB has detected more extensive than tyrosine decarboxylase activity gene. Increasing the studies examining the presence of aminobiogenic microorganisms in fish is important for the protection of public health

Özet

Biyojen aminler (BA), aminoasitlerin dekarboksilasyonu, aldehit ve keton grupların aminasyonu ve transaminasyonusonucu oluşan fazlası insan sağlığına zararlı olan maddelerdir. Gıdaların raf ömrü ve kalitesinin belirlenmesinde biyojen aminlerin rolübüyüktür. Açığa çıkan BA çeşit ve miktarı hammaddenin kalitesi, doğal mikrobiota çeşitliliği, işleme ve depolama şartları gibifaktörlere bağlı olarak değişiklik göstermektedir. Balıklarda başta mikrobiyel üremeye bağlı olmak üzere birçok faktöre bağlı BAoluşabilmekte ve zehirlenmelere sebep olabilmektedir. Bu çalışmada, çipura ve levrek balıklarından izole edilen laktik asitbakterilerinin (LAB) muhtemel histidin dekarboksilaz (hdc) ve tirozin dekarbokilaz gen (tyrdc) aktivitelerini belirlemek amaçlanmıştır.Toplamda 14 farklı balık marketlerinden toplanan 84 örnekten 18 Gram pozitif katalaz negatif LAB izole edilmiştir. İzole edilen 18laktik asit bakterisinden 12’si (%67) histidin ve tirozin dekarboksilaz negatiftir. Geriye kalan 6 LAB izolatının 2’si (%11) sadece tirozindekarboksilaz pozitif, 4’ü ise (%22) histidin ve tirozin dekarboksilaz pozitif belirlenmiştir. Elde edilen toplam 18 LAB izolatınınyapılan Polimeraz Zincir Reaksiyonu (PZR) sonucunda 12 laktik asit bakterisinin 9’unun (%75) histidin dekarboksilaz genine sahipolduğu tespit edilmiştir. Sonuç olarak, LAB izolatlarında histidin dekarboksilaz gen prevalansı tirozin dekarboksilaz geninden fazlabulunmuştur. Aminobiyojenik mikroorganizmaların balıklardaki varlığını inceleyen çalışmaların arttırılması halk sağlığının korunmasıaçısından önem arz etmektedir

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Cite This Article

GÜRLER, Z., PAMUK, Ş., DOĞAN, Y. N. (2022). Histidine and tyrosine decarboxylase activities of lactic acid bacteriain sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax). Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 67 - Sayı: 4, 343–347. https://ajindex.com/articles/444497

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