Pretreatment of shrimp shells with an acidic deep eutectic solvent system for chitin extraction and its enhanced performance as a carrier for immobilized lipase
Copyright © 2024 Elsevier B.V. All rights reserved..
Existing methods for chitin extraction usually produce substantial waste, which poses ecological hazards. Natural deep eutectic solvent (NADES) offers a promising one-step pretreatment alternative, replacing the resource-intensive demineralization (DM) and deproteinization (DP) process. Hence, in this study, the influence of various acidic NADES, on achieving a simplified one-step DM and DP in the chitin extraction process was investigated. The study yielded chitin with 87.73 % purity, and microstructural analysis showed that NADES pretreatment minimally affected chitin quality without deacetylation. In addition, chitin extracted using choline chloride-oxalic acid as a carrier displayed excellent performance in the immobilization of Geobacillus thermocatenulatus lipase 2 (GTL2) because of obvious Ca2+ activation effect. This process contributed to enhancement of immobilized enzyme activity. The immobilized GTL2 showed excellent hydrolytic capabilities, with its highest activity reaching 547.80 ± 20.62 U/mg, significantly better than the five commercial lipases that exhibited <40 % of the enzyme activity. Furthermore, the hydrolytic capacity of immobilized GTL2 was notably high for 4-nitrophenyl butyrate, measuring 935.47 ± 51.60 U/mg. This study provided a constructive approach for the one-step pretreatment of shrimp shells with organic acid-based NADES to isolate and purify chitin and its potential application as an immobilized carrier to enhance enzyme activity.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:264 |
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| Enthalten in: |
International journal of biological macromolecules - 264(2024), Pt 2 vom: 11. Apr., Seite 130774 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lei, Jiachi [VerfasserIn] |
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| Links: |
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| Themen: |
1398-61-4 |
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| Anmerkungen: |
Date Completed 10.04.2024 Date Revised 10.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ijbiomac.2024.130774 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM369569490 |
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| 520 | |a Copyright © 2024 Elsevier B.V. All rights reserved. | ||
| 520 | |a Existing methods for chitin extraction usually produce substantial waste, which poses ecological hazards. Natural deep eutectic solvent (NADES) offers a promising one-step pretreatment alternative, replacing the resource-intensive demineralization (DM) and deproteinization (DP) process. Hence, in this study, the influence of various acidic NADES, on achieving a simplified one-step DM and DP in the chitin extraction process was investigated. The study yielded chitin with 87.73 % purity, and microstructural analysis showed that NADES pretreatment minimally affected chitin quality without deacetylation. In addition, chitin extracted using choline chloride-oxalic acid as a carrier displayed excellent performance in the immobilization of Geobacillus thermocatenulatus lipase 2 (GTL2) because of obvious Ca2+ activation effect. This process contributed to enhancement of immobilized enzyme activity. The immobilized GTL2 showed excellent hydrolytic capabilities, with its highest activity reaching 547.80 ± 20.62 U/mg, significantly better than the five commercial lipases that exhibited <40 % of the enzyme activity. Furthermore, the hydrolytic capacity of immobilized GTL2 was notably high for 4-nitrophenyl butyrate, measuring 935.47 ± 51.60 U/mg. This study provided a constructive approach for the one-step pretreatment of shrimp shells with organic acid-based NADES to isolate and purify chitin and its potential application as an immobilized carrier to enhance enzyme activity | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Chitin | |
| 650 | 4 | |a Immobilized lipase | |
| 650 | 4 | |a Natural deep eutectic solvent | |
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| 650 | 7 | |a 1398-61-4 |2 NLM | |
| 650 | 7 | |a Solvents |2 NLM | |
| 650 | 7 | |a Deep Eutectic Solvents |2 NLM | |
| 650 | 7 | |a Lipase |2 NLM | |
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| 700 | 1 | |a Zhang, Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Kuntai |e verfasserin |4 aut | |
| 700 | 1 | |a Qin, Hongyu |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Hai |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Pei |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Shucheng |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Jingliang |e verfasserin |4 aut | |
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