Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications
Abstract Background Because the process is cost-effective, microbial pectinase is used in juice clearing. The isolation, immobilization, and characterization of pectinase from Aspergillus nidulans (Eidam) G. Winter (AUMC No. 7147) were therefore the focus of the current investigation. Results Ammoni...
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BMC
2025-01-01
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| Series: | Microbial Cell Factories |
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| Online Access: | https://doi.org/10.1186/s12934-024-02603-x |
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| author | Hamed M. El-Shora Sabah A. Abo-Elmaaty Gharieb S. El-Sayyad Widad M. Al-Bishri Ahmed I. El-Batal Mervat G. Hassan |
| author_facet | Hamed M. El-Shora Sabah A. Abo-Elmaaty Gharieb S. El-Sayyad Widad M. Al-Bishri Ahmed I. El-Batal Mervat G. Hassan |
| author_sort | Hamed M. El-Shora |
| collection | DOAJ |
| description | Abstract Background Because the process is cost-effective, microbial pectinase is used in juice clearing. The isolation, immobilization, and characterization of pectinase from Aspergillus nidulans (Eidam) G. Winter (AUMC No. 7147) were therefore the focus of the current investigation. Results Ammonium sulphate (85%), DEAE-cellulose, and Sephadex G-200 were used to purify the enzyme. With a yield of 30.4%, the final specific activity was 400 units mg−1 protein and 125-fold purification. Using SDS-PAGE to validate the purification of the pectinase, a single band showing the homogeneity of the purified pectinase with a molecular weight of 50 kD was found. Chitosan and calcium alginate both effectively immobilized pectinase, with immobilization efficiencies of 85.7 and 69.4%, respectively. At 50, 55, 60, and 65 °C, the thermostability of both free and chitosan-immobilized pectinase was examined. The free and chitosan-immobilized enzymes had half-lives (t1/2) of 23.83 and 28.64 min at 65 °C, and their Kd values were 0.0291 and 0.0242 min−1, respectively. In addition, the Z values were 44.6 and 31.54 °C, while the D values were 79.2 and 95.1 min. Compared to the untreated one, the orange, mango, and pineapple juices treated with immobilized pure pectinase showed greater clarity. Following treatment with pure pectinase, the fruit juice’s 1, 1-diphenyl-2-picrylhydrazyl and 2, 2′-azino-bis 3-ethylbenzothiazoline-6-sulfonate scavenging activities increased. Following treatment with pure pectinase, the amounts of total phenolics and total flavonoids increased. Conclusion The procedure is deemed cost-effective in the food industry because the strong affinity of fungal pectinase for pectin. The investigated pectinase supported its usage in the food industry by being able to clear orange, mango, and pineapple juices. |
| format | Article |
| id | doaj-art-dcb9b7a881cd4dc0b18e21753178a132 |
| institution | Kabale University |
| issn | 1475-2859 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Microbial Cell Factories |
| spelling | doaj-art-dcb9b7a881cd4dc0b18e21753178a1322025-01-05T12:50:49ZengBMCMicrobial Cell Factories1475-28592025-01-0124111310.1186/s12934-024-02603-xImmobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applicationsHamed M. El-Shora0Sabah A. Abo-Elmaaty1Gharieb S. El-Sayyad2Widad M. Al-Bishri3Ahmed I. El-Batal4Mervat G. Hassan5Botany Department, Faculty of Science, Mansoura UniversityBotany and Microbiology Department, Faculty of Science, Benha UniversityMedical Laboratory Technology Department, Faculty of Applied Health Sciences Technology, Badr University in Cairo (BUC)Department of Biological Sciences, College of Science, University of JeddahDrug Microbiology Lab., Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA)Botany and Microbiology Department, Faculty of Science, Benha UniversityAbstract Background Because the process is cost-effective, microbial pectinase is used in juice clearing. The isolation, immobilization, and characterization of pectinase from Aspergillus nidulans (Eidam) G. Winter (AUMC No. 7147) were therefore the focus of the current investigation. Results Ammonium sulphate (85%), DEAE-cellulose, and Sephadex G-200 were used to purify the enzyme. With a yield of 30.4%, the final specific activity was 400 units mg−1 protein and 125-fold purification. Using SDS-PAGE to validate the purification of the pectinase, a single band showing the homogeneity of the purified pectinase with a molecular weight of 50 kD was found. Chitosan and calcium alginate both effectively immobilized pectinase, with immobilization efficiencies of 85.7 and 69.4%, respectively. At 50, 55, 60, and 65 °C, the thermostability of both free and chitosan-immobilized pectinase was examined. The free and chitosan-immobilized enzymes had half-lives (t1/2) of 23.83 and 28.64 min at 65 °C, and their Kd values were 0.0291 and 0.0242 min−1, respectively. In addition, the Z values were 44.6 and 31.54 °C, while the D values were 79.2 and 95.1 min. Compared to the untreated one, the orange, mango, and pineapple juices treated with immobilized pure pectinase showed greater clarity. Following treatment with pure pectinase, the fruit juice’s 1, 1-diphenyl-2-picrylhydrazyl and 2, 2′-azino-bis 3-ethylbenzothiazoline-6-sulfonate scavenging activities increased. Following treatment with pure pectinase, the amounts of total phenolics and total flavonoids increased. Conclusion The procedure is deemed cost-effective in the food industry because the strong affinity of fungal pectinase for pectin. The investigated pectinase supported its usage in the food industry by being able to clear orange, mango, and pineapple juices.https://doi.org/10.1186/s12934-024-02603-xPectinaseOrangeMangoPineappleChitosanAlginate |
| spellingShingle | Hamed M. El-Shora Sabah A. Abo-Elmaaty Gharieb S. El-Sayyad Widad M. Al-Bishri Ahmed I. El-Batal Mervat G. Hassan Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications Microbial Cell Factories Pectinase Orange Mango Pineapple Chitosan Alginate |
| title | Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| title_full | Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| title_fullStr | Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| title_full_unstemmed | Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| title_short | Immobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| title_sort | immobilization of purified pectinase from aspergillus nidulans on chitosan and alginate beads for biotechnological applications |
| topic | Pectinase Orange Mango Pineapple Chitosan Alginate |
| url | https://doi.org/10.1186/s12934-024-02603-x |
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