Journals / Hacettepe Journal of Biology and Chemistry / 2014 / Cilt: 42 - Sayı: 3

Use of poly(HEMA-MAH)-$Cu^{2+}$ Microbeads for α-Amylase Immobilization

Poli(HEMA-MAH)-$Cu^{2+}$ Mikrokürelerin α-Amilaz İmmobilizasyonu için Kullanılması

Pages
323–330
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

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

Reuse studies showed that the immobilized enzyme could reuse six times while retaining 76% of its activity.

📌 3 Key Takeaways

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Objective & Hypothesis:In this article poly(2-hydroxyethyl methacrylate-N-methacryloyl-(l)-histidin methylester) [P(HEMA-MAH)] microbeads were prepared by suspension polymerization of 2-hydroxyethyl methacrylate (HEMA) and N-methacryloyl-(l)-histidine methyl ester (MAH).
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Key Findings & Data:Some properties of the p(HEMA-MAH) microbeads were determined by using scanning electron microscopy (SEM) and swelling tests. $Cu^{2+}$ ions were chelated on the p(HEMA-MAH) microbeads, then these microbeads were used in the immobilization of α-amylase in batch system.
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Conclusion & Impact:Reuse studies showed that the immobilized enzyme could reuse six times while retaining 76% of its activity.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this article poly(2-hydroxyethyl methacrylate-N-methacryloyl-(l)-histidin methylester) [P(HEMA-MAH)] microbeads were prepared by suspension polymerization of 2-hydroxyethyl methacrylate (HEMA) and N-methacryloyl-(l)-histidine methyl ester (MAH). Some properties of the p(HEMA-MAH) microbeads were determined by using scanning electron microscopy (SEM) and swelling tests. $Cu^{2+}$ ions were chelated on the p(HEMA-MAH) microbeads, then these microbeads were used in the immobilization of α-amylase in batch system. The maximum α-amylase adsorption capacity of the p(HEMA-MAH)-$Cu^{2+}$ beads was found to be 14.88 mg/g at pH 6.0. The optimum temperatures for the immobilized and free enzyme were determined to be 30ºC and 25 ºC, respectively. Kinetic parameters $(K_m, V_{max})$ of the immobilized enzyme were also determined and compared with those of free enzyme. Reuse studies showed that the immobilized enzyme could reuse six times while retaining 76% of its activity.

Özet

SBu çalışmada poli(2-hidroksietil metakrilat-N-metakriloil-(L)-histidin metilester [P(HEMA-MAH)] mikroküreler süspansiyon polimerizasyon yöntemiyle 2-hidroksietil metakrilat (HEMA) ve N-metakriloil-(L)-histidin metil ester (MAH) ile hazırlandı. P(HEMA-MAH) mikrokürelerin bazı özellikleri taramalı elektron mikroskobu (SEM) ve şişme testleriyle belirlendi. P(HEMA-MAH) mikrokürelere $Cu^{2+}$ bağlandıktan sonra bu mikroküreler α-amilaz immobilizasyonu için kullanıldı. P(HEMA-MAH)-$Cu^{2+}$ mikrokürelerin maksimum α-amilaz adsorpsiyon kapasitesi pH 6.0’da 14.88 mg/g olarak bulundu. İmmobilize ve serbest enzim için optimum sıcaklık sırasıyla 30ºC ve 25ºC olarak belirlendi. İmmobilize enzim için kinetik parametreler de $(K_m, V_{max})$ belirlenerek serbest enzim ile karşılaştırıldı. Tekrarlılık çalışmaları, immobilize enzimin orijinal aktivitesinin %76’sını kaybetmeden altı kez tekrar kulanılabilirliğini gösterdi.

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Cite This Article

Baysal, Z., Ayla, A. (2022). Use of poly(HEMA-MAH)-$Cu^{2+}$ Microbeads for α-Amylase Immobilization. Hacettepe Journal of Biology and Chemistry, Cilt: 42 - Sayı: 3, 323–330. https://ajindex.com/articles/529172

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