Journals / Trakya University Journal of Natural Sciences / 2018 / Cilt: 19 - Sayı: 2

OPTIMISATION OF Bacillus amyloliquefaciens FE-K1 EXTRACELLULAR PEPTIDASE PRODUCTION BY RESPONSE SURFACE METHODOLOGY

Pages
159–173
Publication Date
2018-10-15
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Results showed that the optimum peptidase production occurred at 33.4°C, pH 6.62 and 2.3% inoculation.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, it was aimed to optimise the extracellular peptidase production of Bacillus amyloliquefaciens FE-K1, previously isolated from ropy wholemeal bread, by using response surface methodology (RSM) based on central composite design (CCD).
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Key Findings & Data:The temperature (20-45°C), initial pH of the enzyme production medium (pH 5-9) and inoculation level (1-5%, v/v) were used as the factors for RSM, and the fermentation time was determined for each trial separately.
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Conclusion & Impact:Results showed that the optimum peptidase production occurred at 33.4°C, pH 6.62 and 2.3% inoculation.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Bacillus · central composite design · peptidase

Abstract

In this study, it was aimed to optimise the extracellular peptidase production of Bacillus amyloliquefaciens FE-K1, previously isolated from ropy wholemeal bread, by using response surface methodology (RSM) based on central composite design (CCD). The temperature (20-45°C), initial pH of the enzyme production medium (pH 5-9) and inoculation level (1-5%, v/v) were used as the factors for RSM, and the fermentation time was determined for each trial separately. Results showed that the optimum peptidase production occurred at 33.4°C, pH 6.62 and 2.3% inoculation. It was determined that the fermentation time was only 7h, the crude enzyme had a peptidase activity of 49.17U/mL and a specific activity of 504.77U/mg under the optimised conditions.

Özet

Bu çalışmada, daha önce sünmüş ekmekten izole edilmiş olan Bacillus amyloliquefaciens FE-K1’in ekstraselüler peptidaz üretiminin, merkezi kompozit tasarıma (MKT) dayalı yanıt yüzey yöntemi (YYY) ile optimize edilmesi amaçlanmıştır. Yanıt yüzey yönteminde sıcaklık (20-45°C), enzim üretim ortamının başlangıç pH değeri (pH 5-9) ve inokülasyon seviyesi (%1-5, v/v) faktör olarak kullanılmış, fermentasyon süresi her deneme için ayrı ayrı belirlenmiştir. Sonuçlar optimum peptidaz üretiminin 33,4°C, pH 6,62 ve %2,3 inokülasyon seviyesinde elde edildiğini göstermiştir. Optimum koşullar altında fermentasyon süresinin sadece 7 saat, ham enzimin aktivitesinin 49,17U/mL, spesifik aktivitesinin ise 504,77U/mg olduğu tespit edilmiştir.

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Cite This Article

EREM, F., İNAN, M., CERTEL, M. (2018). OPTIMISATION OF Bacillus amyloliquefaciens FE-K1 EXTRACELLULAR PEPTIDASE PRODUCTION BY RESPONSE SURFACE METHODOLOGY. Trakya University Journal of Natural Sciences, Cilt: 19 - Sayı: 2, 159–173. https://ajindex.com/articles/46590

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