Journals / Gıda / 2009 / Cilt: 34 - Sayı: 6

Transglutaminaz ile inek sütü protein sisteminin modifikasyonu

Modification of bovine milk protein system by transglutaminase

Journal
Gıda
Pages
345–350
Publication Date
2022-10-17
DOI
—
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AI Summary & Key Takeaways

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

It was found that tgase had no effect on the native whey proteins.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study the effect of transglutaminase (tgase) on individual bovine milk proteins in skim milk samples was investigated with a kinetic approach in skimmilk samples.
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Key Findings & Data:Raw and preheated (80 $^oC$/ 5 minutes) samples were incubated with tgase with 2 different enzymes with the protein ratios of 1:10 and 1:20 for upto 4 hours at 3 different incubation temperatures (4, 30 and 42 $^oC$).
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Conclusion & Impact:It was found that tgase had no effect on the native whey proteins.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study the effect of transglutaminase (tgase) on individual bovine milk proteins in skim milk samples was investigated with a kinetic approach in skimmilk samples. Raw and preheated (80 $^oC$/ 5 minutes) samples were incubated with tgase with 2 different enzymes with the protein ratios of 1:10 and 1:20 for upto 4 hours at 3 different incubation temperatures (4, 30 and 42 $^oC$). It was found that tgase had no effect on the native whey proteins. The highest reaction rate constant value (k) was found for κ-casein, and it was followed by β-casein and α-casein, respectively in heated and unheated skimmilk samples. The crosslinking reaction was almost completed within the first 5 minutes at 42 $^oC$ for κ-casein. The $E_alpha$ value (activation energy) of β-casein (29 kj/mol) was found to be lower than that of α-casein (45 kj/mol). On the other hand, when the kinetic parameters were evaluated, it is postulated that tgase can be used for cheese manufacturing (30 $^oC$, at 1:10 E:P ratio) and yoghurt production (42 $^oC$, at 1:20 E:P ratio). This approach will be investigated in further studies.

Özet

Bu çalışmada, yağsız süt örneklerinde tranglutaminazın (tgaz) süt proteinleri üzerine etkisi, kinetik bir yaklaşımla araştırılmıştır. Çiğ ve ön ısıl işlem görmüş örnekler (80 $^oC$/ 5 minutes), tgaz ile 1:10 ve 1:20 olmak üzere iki farklı enzim: protein oranında 4 saate kadar 3 farklı inkübasyon sıcaklığında inkübe edilmiştir (4, 30 and 42 $^oC$). Tgazın doğal serum proteinleri üzerine etkisi olmadığı ortaya konulmuştur. Isıl işlem görmüş ve görmemiş yağsız süt örneklerinde, en yüksek reaksiyon hız sabiti κ-kazein için bulunmuştur; bunu sırasıyla β-kazein ve α-kazein izlemiştir. κ-kazein için çapraz bağlanma reaksiyonunun 42 $^oC$’de ilk 5 dakikada neredeyse tamamlanmıştır. β-kazein için $E_alpha$ değeri (aktivasyon enerjisi) (29 kj/mol), α-kazeininkinden (45 kj/mol) daha düşük bulunmuştur. Diğer taraftan, bu kinetik parametreler değerlendirildiğinde, tgazın peynir üretimi (30 $^oC$, 1:10 E:P oranında) ve yoğurt üretimi (42 $^oC$, 1:20 E:P oranında) için kullanılabileceği ortaya konulmuştur. Bu yaklaşım, daha sonra yapılacak bir çalışma ile değerlendirilmeye alınacaktır.

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Cite This Article

YÜKSEL, Z., ERDEM, Y. K. (2022). Transglutaminaz ile inek sütü protein sisteminin modifikasyonu. Gıda, Cilt: 34 - Sayı: 6, 345–350. https://ajindex.com/articles/525429

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