Optimization of catalytic properties of Mucor racemosus lipase through immobilization in a biocompatible alginate gelatin hydrogel matrix for free fatty acid production: a sustainable robust biocatalyst for ultrasound-assisted olive oil hydrolysis
Abstract Immobilization is a key technology that improves the operational stability of enzymes. In this study, alginate-gelatin (Alg-Gel) hydrogel matrix was synthesized and used as immobilization support for Mucor racemosus lipase (Lip). Enzyme catalyzed ultrasound-assisted hydrolysis of olive oil was also investigated. Alg-Gel matrix exhibited high entrapment efficiency (94.5%) with a degradation rate of 42% after 30 days. The hydrolysis of olive oil using Alg-Gel-Lip increased significantly (P < 0.05) as compared to free Lip. Optimum pH and temperature were determined as pH 5.0 and 40 °C, respectively. The Vmax values for free and immobilized Lip were determined to be 5.5 mM and 5.8 mM oleic acid/min/ml, respectively, and the Km values were 2.2 and 2.58 mM/ml respectively. Thermal stability was highly improved for Alg-Gel-Lip ($ t_{1/2} $ 650 min and Ed 87.96 kJ/mol) over free Lip ($ t_{1/2} $ 150 min and Ed 23.36 kJ/mol). The enzymatic activity of Alg-Gel-Lip was preserved at 96% after four consecutive cycles and 90% of the initial activity after storage for 60 days at 4 °C. Alg-Gel-Lip catalyzed olive oil hydrolysis using ultrasound showed a significant (P < 0.05) increase in hydrolysis rate compared to free Lip (from 0.0 to 58.2%, within the first 2 h). In contrast to traditional methodology, using ultrasonic improved temperature-dependent enzymatic catalyzed reactions and delivered greater reaction yields. Results suggest that Alg-Gel-Lip biocatalyst has great industrial application potential, particularly for free fatty acid production. In addition, the combined use of enzyme and ultrasound has the potential of eco-friendly technology..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:12 |
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| Enthalten in: |
3 Biotech - 12(2022), 11 vom: 19. Sept. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Abdel-Mageed, Heidi Mohamed [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Alginate gelatin hydrogel |
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| Anmerkungen: |
© The Author(s) 2022 |
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| doi: |
10.1007/s13205-022-03319-8 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2079568825 |
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| 100 | 1 | |a Abdel-Mageed, Heidi Mohamed |e verfasserin |0 (orcid)0000-0002-2944-1518 |4 aut | |
| 245 | 1 | 0 | |a Optimization of catalytic properties of Mucor racemosus lipase through immobilization in a biocompatible alginate gelatin hydrogel matrix for free fatty acid production: a sustainable robust biocatalyst for ultrasound-assisted olive oil hydrolysis |
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| 520 | |a Abstract Immobilization is a key technology that improves the operational stability of enzymes. In this study, alginate-gelatin (Alg-Gel) hydrogel matrix was synthesized and used as immobilization support for Mucor racemosus lipase (Lip). Enzyme catalyzed ultrasound-assisted hydrolysis of olive oil was also investigated. Alg-Gel matrix exhibited high entrapment efficiency (94.5%) with a degradation rate of 42% after 30 days. The hydrolysis of olive oil using Alg-Gel-Lip increased significantly (P < 0.05) as compared to free Lip. Optimum pH and temperature were determined as pH 5.0 and 40 °C, respectively. The Vmax values for free and immobilized Lip were determined to be 5.5 mM and 5.8 mM oleic acid/min/ml, respectively, and the Km values were 2.2 and 2.58 mM/ml respectively. Thermal stability was highly improved for Alg-Gel-Lip ($ t_{1/2} $ 650 min and Ed 87.96 kJ/mol) over free Lip ($ t_{1/2} $ 150 min and Ed 23.36 kJ/mol). The enzymatic activity of Alg-Gel-Lip was preserved at 96% after four consecutive cycles and 90% of the initial activity after storage for 60 days at 4 °C. Alg-Gel-Lip catalyzed olive oil hydrolysis using ultrasound showed a significant (P < 0.05) increase in hydrolysis rate compared to free Lip (from 0.0 to 58.2%, within the first 2 h). In contrast to traditional methodology, using ultrasonic improved temperature-dependent enzymatic catalyzed reactions and delivered greater reaction yields. Results suggest that Alg-Gel-Lip biocatalyst has great industrial application potential, particularly for free fatty acid production. In addition, the combined use of enzyme and ultrasound has the potential of eco-friendly technology. | ||
| 650 | 4 | |a Alginate gelatin hydrogel | |
| 650 | 4 | |a Biocatalyst | |
| 650 | 4 | |a Oleic acid | |
| 650 | 4 | |a Ultrasound | |
| 650 | 4 | |a Enzyme immobilization | |
| 650 | 4 | |a Olive oil hydrolysis | |
| 650 | 4 | |a Biocompatible | |
| 650 | 4 | |a Green technology | |
| 700 | 1 | |a Nada, Dina |4 aut | |
| 700 | 1 | |a Radwan, Rasha Ali |0 (orcid)0000-0001-7065-5107 |4 aut | |
| 700 | 1 | |a Mohamed, Saleh Ahmed |0 (orcid)0000-0003-2978-9466 |4 aut | |
| 700 | 1 | |a Gohary, Nesrine Abdelrehim E. L. |0 (orcid)0000-0001-6909-164X |4 aut | |
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