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Magwaza B, Amobonye A, Pillai S. Microbial β-glucosidases: Recent advances and applications. Biochimie 2024; 225:49-67. [PMID: 38734124 DOI: 10.1016/j.biochi.2024.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/05/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
The global β-glucosidase market is currently estimated at ∼400 million USD, and it is expected to double in the next six years; a trend that is mainly ascribed to the demand for the enzyme for biofuel processing. Microbial β-glucosidase, particularly, has thus garnered significant attention due to its ease of production, catalytic efficiency, and versatility, which have all facilitated its biotechnological potential across different industries. Hence, there are continued efforts to screen, produce, purify, characterize and evaluate the industrial applicability of β-glucosidase from actinomycetes, bacteria, fungi, and yeasts. With this rising demand for β-glucosidase, various cost-effective and efficient approaches are being explored to discover, redesign, and enhance their production and functional properties. Thus, this present review provides an up-to-date overview of advancements in the utilization of microbial β-glucosidases as "Emerging Green Tools" in 21st-century industries. In this regard, focus was placed on the use of recombinant technology, protein engineering, and immobilization techniques targeted at improving the industrial applicability of the enzyme. Furthermore, insights were given into the recent progress made in conventional β-glucosidase production, their industrial applications, as well as the current commercial status-with a focus on the patents.
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Affiliation(s)
- Buka Magwaza
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P. O. Box 1334, Durban, 4000, South Africa.
| | - Ayodeji Amobonye
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P. O. Box 1334, Durban, 4000, South Africa.
| | - Santhosh Pillai
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P. O. Box 1334, Durban, 4000, South Africa.
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2
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Bahri S, Homaei A, Mosaddegh E. Zinc sulfide-chitosan hybrid nanoparticles as a robust surface for immobilization of Sillago sihama α-amylase. Colloids Surf B Biointerfaces 2022; 218:112754. [PMID: 35963144 DOI: 10.1016/j.colsurfb.2022.112754] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/25/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022]
Abstract
In the present study, zinc sulfide-chitosan hybrid nanoparticles synthesized by chemical deposition were used as a matrix for the immobilization of purified α-amylase extracted from Sillago sihama (Forsskal, 1775). In this regard, the size and morphological structure of zinc sulfide-chitosan hybrid nanoparticles before and after the stabilization process were evaluated using FT-IR, DLS methods, as well as SEM and TEM electron microscopy, and EDS analyses. Then, the efficiency of the immobilized enzyme was measured in terms of temperature, optimal pH, stability at the critical temperature, and pH values. Immobilization of α-amylase on zinc sulfide -chitosan hybrid nanoparticles increased the long-term stability, as well as its endurance to critical temperatures and pH values; however, the optimal temperature and pH values of the enzyme were not altered following the immobilization process. The kinetic parameters of the enzyme were also changed during immobilization. Enzyme immobilization increased the Km, whereas decreased the catalytic efficiency (Kcat / Km) of the immobilized enzyme compared with the free enzyme. These results are very important as, in most cases, enzyme immobilization reduces the activity and catalytic efficiency of enzymes. The nano-enzyme produced in this study, due to its high temperature, and pH stability, could be a good candidate for industrial applications, especially in the food industry.
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Affiliation(s)
- Sara Bahri
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran
| | - Ahmad Homaei
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran.
| | - Elaheh Mosaddegh
- Department of New Materials, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, PO Box 76315-117, Kerman, Iran
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3
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dos Santos KP, Rios NS, Labus K, Gonçalves LRB. Co-immobilization of lipase and laccase on agarose-based supports via layer-by-layer strategy: effect of diffusional limitations. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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4
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da Silva Almeida LE, Fernandes P, de Assis SA. Immobilization of Fungal Cellulases Highlighting β-Glucosidase: Techniques, Supports, Chemical, and Physical Changes. Protein J 2022; 41:274-292. [PMID: 35438380 DOI: 10.1007/s10930-022-10048-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2022] [Indexed: 10/18/2022]
Abstract
β-Glucosidase is widely used in several industrial segments, among which we can highlight the pharmaceutical industry, beverages, biofuels, animal feed production, and the textile industry. The great applicability of this enzyme, associated with the high cost of its production, justifies the need to find ways to make its use economically viable on an industrial scale. Through enzyme immobilization, the biocatalyst can be reused more than once, without great impact on its catalytic activity, and higher operational and storage stabilities can be achieved as compared to the free form. Accordingly, this review brings information about different techniques and supports that have been studied in the immobilization of cellulases with a focus on β-glucosidase, as well as the application of these immobilized systems to supplement commercial mixtures.
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Affiliation(s)
- Larissa Emanuelle da Silva Almeida
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Avenida Transnordestina s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil
| | - Pedro Fernandes
- DREAMS and Faculty of Engineering, Lusófona University, Lisbon, Portugal.,iBB-Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Sandra Aparecida de Assis
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Avenida Transnordestina s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil.
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5
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Immobilization-Stabilization of β-Glucosidase for Implementation of Intensified Hydrolysis of Cellobiose in Continuous Flow Reactors. Catalysts 2022. [DOI: 10.3390/catal12010080] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cellulose saccharification to glucose is an operation of paramount importance in the bioenergy sector and the chemical and food industries, while glucose is a critical platform chemical in the integrated biorefinery. Among the cellulose degrading enzymes, β-glucosidases are responsible for cellobiose hydrolysis, the final step in cellulose saccharification, which is usually the critical bottleneck for the whole cellulose saccharification process. The design of very active and stable β-glucosidase-based biocatalysts is a key strategy to implement an efficient saccharification process. Enzyme immobilization and reaction engineering are two fundamental tools for its understanding and implementation. Here, we have designed an immobilized-stabilized solid-supported β-glucosidase based on the glyoxyl immobilization chemistry applied in porous solid particles. The biocatalyst was stable at operational temperature and highly active, which allowed us to implement 25 °C as working temperature with a catalyst productivity of 109 mmol/min/gsupport. Cellobiose degradation was implemented in discontinuous stirred tank reactors, following which a simplified kinetic model was applied to assess the process limitations due to substrate and product inhibition. Finally, the reactive process was driven in a continuous flow fixed-bed reactor, achieving reaction intensification under mild operation conditions, reaching full cellobiose conversion of 34 g/L in a reaction time span of 20 min.
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Fernández-Pacheco P, García-Béjar B, Briones Pérez A, Arévalo-Villena M. Free and Immobilised β-Glucosidases in Oenology: Biotechnological Characterisation and Its Effect on Enhancement of Wine Aroma. Front Microbiol 2021; 12:723815. [PMID: 34434184 PMCID: PMC8381471 DOI: 10.3389/fmicb.2021.723815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/23/2021] [Indexed: 11/22/2022] Open
Abstract
In grapes, monoterpenes and norisoprenoids are in the form of non-volatile compounds, flavourless glycosides which could enhance the aroma of wines after its hydrolysis using β- glucosidases enzymes. It is known that the use of immobilised enzymes offers advantages such as reusability and easy recuperation. In this study, a commercial β-glucosidase was immobilised by absorption in sodium alginate. Biotechnological characteristics and terpen hydrolysis (hydrolysis aroma precursors) in muscat wines were studied after treatment with both free and immobilised commercial β- glucosidase with two different concentrations. It was revealed that both forms shared an optimal pH (4.5) and a maximum temperature (64°C), even an increment on the activity between 40and 60°C. A similar Km value has been determined while Vmax from the immobilised enzyme was higher than the free (3.35 and 2.52 μmol min–1 mg–1, respectively). Additionally, the immobilised enzyme showed a better hydrolytic activity during 24 h, and its reusability has been proven. Regarding enzymatic hydrolysis in grape must, the best results were observed for the highest concentration of free β-glucosidase although glucose release was also determined for the immobilised enzyme along the days. In contrast, maximum activity was reached by the immobilised β-glucosidase in less time but in no case equalled the free ones. Finally, volatile compound liberation in wines treated with free or immobilised enzymes was analysed using HRGC-MS. Liberation for both enzymes and the greatest concentrations of some volatiles were detected when a double dose of the free β-glucosidase was used. Nevertheless, the wines treated with the immobilised β-glucosidase showed a high concentration of some volatile compounds such as nerol or geraniol.
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Affiliation(s)
- Pilar Fernández-Pacheco
- Food Technology Department, Faculty of Environmental Science and Biochemistry, Castilla-La Mancha University, Toledo, Spain
| | - Beatriz García-Béjar
- Analytical Chemistry and Food Technology Department, Faculty of Chemical Sciences and Technologies, Castilla-La Mancha University, Ciudad Real, Spain
| | - Ana Briones Pérez
- Analytical Chemistry and Food Technology Department, Faculty of Chemical Sciences and Technologies, Castilla-La Mancha University, Ciudad Real, Spain
| | - María Arévalo-Villena
- Analytical Chemistry and Food Technology Department, Faculty of Chemical Sciences and Technologies, Castilla-La Mancha University, Ciudad Real, Spain
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Hozhabr Araghi S, John A, Sadeghi Googheri MS. How a crosslinker agent interacts with the β-glucosidase enzyme surface in an aqueous solution: Insight from quantum mechanics calculations and molecular dynamics simulations. Colloids Surf B Biointerfaces 2021; 203:111761. [PMID: 33872829 DOI: 10.1016/j.colsurfb.2021.111761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 10/21/2022]
Abstract
In this study, surficial interactions of glutaraldehyde (GA) as an important crosslinker agent with the β-glucosidase (BGL) enzyme surface were investigated by theoretical methods. Since the inherent constraints of experimental methods limit their application to find the molecular perspective of these significant interactions in enzyme immobilization, theoretical methods were used as a complementary tool to understand this concept. The Minnesota density functional calculations showed that the chair conformations of the oxane-2,6-diol form of the GA were more stable than its free aldehyde form. MD simulations of propylamine-GA molecules, as a representative of attached-GA, in aqueous solutions of different concentrations were done to determine the molecular basis of surficial interactions with the BGL surface. The root mean square fluctuation (RMSF) demonstrated that the maximum flexibility of the BGL enzyme belonged to 460-480 residues in all solutions. Based on the spatial distribution function (SDF) analysis, the active site entrance was the most favored region to accumulate solute molecules. Radial distribution function (RDF) results showed that all forms of propylamine-GA molecules interacted from their head side with the lysine residues of BGL, which Lys247, Lys376, and Lys384 were found to be the most interactive lysine residues. Also, hydrogen bond (HB) analysis from two viewpoints confirmed HB formation possibility between propylamine-GA molecules and these lysine residues. These results explained which regions of the BGL have the maximum possibility to interact and link to GA and help us in understanding the process of enzyme immobilization.
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Affiliation(s)
- Samira Hozhabr Araghi
- Laboratory of Materials Science, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
| | - Amalraj John
- Laboratory of Materials Science, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile.
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Almeida LEDS, Ribeiro GCA, Aparecida de Assis S. β-Glucosidase produced by Moniliophthora perniciosa: Characterization and application in the hydrolysis of sugarcane bagasse. Biotechnol Appl Biochem 2021; 69:963-973. [PMID: 33855775 DOI: 10.1002/bab.2167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 04/03/2021] [Indexed: 11/11/2022]
Abstract
β-Glucosidases (BGLs) belong to the group of enzymes of cellulases and act in the last stage of cellulose degradation, releasing glucose molecules, eliminating the inhibitory effect of cellobiose. This study focused on the production, characterization, and application of BGL from Moniliophthora perniciosa in the hydrolysis of pretreated sugarcane bagasse (3% NaOH + 6% Na2 SO3 ), with varying enzymatic loads and reaction times. The enzyme showed an optimum pH of 4.5 and 60°C. It was stable at all temperatures analyzed (50-90°C) and retained about 100% of its activity at 50°C after 60 min of incubation. Among the ions analyzed, BaCl2 increased BGL activity 9.04 ± 1.41 times. The maximum production of reducing sugars (89.15%) was achieved after 48 h with 10 mg of protein.
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Affiliation(s)
- Larissa Emanuelle da Silva Almeida
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | - Geise Camila Araújo Ribeiro
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | - Sandra Aparecida de Assis
- Enzymology and Fermentation Technology Laboratory, Health Department, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
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9
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Niyonzima FN. Detergent-compatible fungal cellulases. Folia Microbiol (Praha) 2020; 66:25-40. [PMID: 33184763 DOI: 10.1007/s12223-020-00838-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/05/2020] [Indexed: 11/28/2022]
Abstract
Detergent enzymes are currently added to all powder and liquid detergents that are manufactured. Cellulases, lipases, amylases, and proteases are used in the detergency to replace toxic phosphates and silicates and to reduce high energy consumption. This makes the use of enzymes in detergent formulation cost effective. Fungi are producers of important extracellular enzymes for industrial use. The fungal and bacterial cellulases maintain the shape and color of the washed garments. There is a high demand for cellulases at the market by detergent industries. With this high demand, genetic engineering has been a solution due to its high production of detergent-compatible cellulases. Fungi are the famous source for detergent-compatible cellulases production, but still, there is a lack of the cost-effective process of alkaline fungal cellulase production. Review papers on detergent-compatible bacterial cellulase and amylase and detergent-compatible fungal and bacterial proteases and lipases are available, but there is no review on detergent fungal cellulases. This review aims to highlight the production, properties, stability, and compatibility of fungal cellulases. It will help other academic and industrial researchers to study, produce, and commercialize the fungal cellulases with good aspects.
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Maria de Medeiros Dantas J, Sousa da Silva N, Eduardo de Araújo Padilha C, Kelly de Araújo N, Silvino dos Santos E. Enhancing chitosan hydrolysis aiming chitooligosaccharides production by using immobilized chitosanolytic enzymes. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101759] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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11
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Chamoli S, Yadav E, Hemansi, Saini JK, Verma AK, Navani NK, Kumar P. Magnetically recyclable catalytic nanoparticles grafted with Bacillus subtilis β-glucosidase for efficient cellobiose hydrolysis. Int J Biol Macromol 2020; 164:S0141-8130(20)34190-8. [PMID: 32800958 DOI: 10.1016/j.ijbiomac.2020.08.102] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/02/2020] [Accepted: 08/11/2020] [Indexed: 12/12/2022]
Abstract
This study reports covalent immobilization of β-glucosidase (BGL) from Bacillus subtilis PS on magnetically recyclable iron nanoparticles for enhancing robustness, facile recovery and reuse of enzyme. Immobilized BGL iron nanoparticles (BGL-INPs) were characterized by various biophysical techniques viz. TEM, DLS, FTIR and CD spectroscopy. The efficiency and yield of immobilization were 89.78 and 84.80%, respectively. After immobilization, optimum pH remained 6.0 whereas optimum temperature upraised to 70 °C whereas apparent Km and Vmax shifted from 0.819 mM to 0.941 mM and 54.46 to 57.67 μmole/min/mg, respectively. Immobilization conferred lower activation energy and improved pH and thermal stabilities. The BGL-INPs retained 85% activity up to 10th cycle of reuse and hydrolyzed more than 90% of cellobiose to glucose within 30 min. Conclusively, improved pH, thermal stability and excellent reusability over free enzyme make BGL-INPs a promising candidate for sustainable bioethanol production and other industrial applications.
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Affiliation(s)
- Shivangi Chamoli
- Department of Biochemistry, C.B.S.H., Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Uttarakhand, 263145, India; Deen Dayal Upadhyay Kaushal Kendra, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Ekta Yadav
- Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Hemansi
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Jitendera Kumar Saini
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Ashok Kumar Verma
- Department of Biochemistry, C.B.S.H., Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Uttarakhand, 263145, India
| | - Naveen Kumar Navani
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Piyush Kumar
- Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana 123031, India; Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.
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12
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Sannino F, Costantini A, Ruffo F, Aronne A, Venezia V, Califano V. Covalent Immobilization of β-Glucosidase into Mesoporous Silica Nanoparticles from Anhydrous Acetone Enhances Its Catalytic Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E108. [PMID: 31948120 PMCID: PMC7022324 DOI: 10.3390/nano10010108] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/10/2019] [Accepted: 12/30/2019] [Indexed: 01/09/2023]
Abstract
An immobilization protocol of a model enzyme into silica nanoparticles was applied. This protocol exploited the use of the bifunctional molecule triethoxysilylpropylisocyanate (TEPI) for covalent binding through a linker of suitable length. The enzyme β-glucosidase (BG) was anchored onto wrinkled silica nanoparticles (WSNs). BG represents a bottleneck in the conversion of lignocellulosic biomass into biofuels through cellulose hydrolysis and fermentation. The key aspect of the procedure was the use of an organic solvent (anhydrous acetone) in which the enzyme was not soluble. This aimed to restrict its conformational changes and thus preserve its native structure. This approach led to a biocatalyst with improved thermal stability, characterized by high immobilization efficiency and yield. It was found that the apparent KM value was about half of that of the free enzyme. The Vmax was about the same than that of the free enzyme. The biocatalyst showed a high operational stability, losing only 30% of its activity after seven reuses.
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Affiliation(s)
- Filomena Sannino
- Department of Agricultural Sciences, Università degli Studi di Napoli Federico II, Via Università 100, 80055 Portici (Na), Italy;
| | - Aniello Costantini
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
| | - Francesco Ruffo
- Department of Chemical Science, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo via Cintia, 80126 Napoli, Italy;
| | - Antonio Aronne
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
| | - Virginia Venezia
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
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Califano V, Costantini A, Silvestri B, Venezia V, Cimino S, Sannino F. The effect of pore morphology on the catalytic performance of β-glucosidase immobilized into mesoporous silica. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-1202] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Abstract
β-Glucosidase (BG) was immobilized by adsorption on wrinkled silica nanoparticles (WSNs) and on tannic acid-templated mesoporous silica nanoparticles (TA-MSNPs). The effect induced by a different morphology of the pores of the sorbent on the catalytic performance of β-glucosidase was investigated. A complete textural and morphological characterization of the two samples was performed by Brunauer–Emmett–Teller (BET) method, Fourier Transform Infrared (FT-IR) and transmission electron microscopy (TEM). The results demonstrated that the catalytic performance of the immobilized enzyme depends on the pores size of sorbent but a key factor is the pores morphology. In fact, the BG immobilized on WSNs and TA-MSNPs (BG/WSNs and BG/TA-MSNPs) shows in both cases good catalytic performances in cellobiose hydrolysis, but the catalyst with the best performance is BG/WSNs, in which the support exhibits a central-radial pore structure and a hierarchical trimodal micro-mesoporous pore size. This peculiar morphology allows the enzyme to settle in a place where the interactions with the walls are maximized, increasing its conformational rigidity. Furthermore, the enzyme is prevalently collocated in the interior of pore so that the pores are not completely capped.
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Affiliation(s)
| | - Aniello Costantini
- Department of Chemical Engineering, Materials and Industrial Production , Università degli Studi di Napoli Federico II , P.le Tecchio 80 , 80125 Naples , Italy
| | - Brigida Silvestri
- Department of Chemical Engineering, Materials and Industrial Production , Università degli Studi di Napoli Federico II , P.le Tecchio 80 , 80125 Naples , Italy
| | - Virginia Venezia
- Department of Chemical Engineering, Materials and Industrial Production , Università degli Studi di Napoli Federico II , P.le Tecchio 80 , 80125 Naples , Italy
| | - Stefano Cimino
- Istituto Ricerche Combustione CNR , P.le Tecchio 80, 80125 , Naples , Italy
| | - Filomena Sannino
- Department of Agricultural Sciences , Università degli Studi di Napoli Federico II , Via Università 100 , 80055 Portici (Na) , Italy
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14
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Omotayo OP, Omotayo AO, Babalola OO, Mwanza M. Comparative study of aflatoxin contamination of winter and summer ginger from the North West Province of South Africa. Toxicol Rep 2019; 6:489-495. [PMID: 31194138 PMCID: PMC6554596 DOI: 10.1016/j.toxrep.2019.05.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 05/20/2019] [Accepted: 05/27/2019] [Indexed: 02/07/2023] Open
Abstract
The presence of mycotoxins in staple food can have adverse effect that result in ill health and associated socio-economic losses. Mycotoxins are naturally occurring toxins produced by certain fungi and can be found in staple food plants such as ginger. Ginger is a renowned medicinal plant that is extensively used for cooking and healing. However, this medicinal plant is with little information about its possible mycotoxins contamination. This study determined the occurrence and prevalence of Aflatoxin B1, B2, G1 and G2 and Ochratoxin A contamination in raw ginger sold around Mahikeng, North West Province, South Africa. Samples were collected purposively from various retailers over winter and summer. The analytical procedure optimized was based on immunoaffinity column cleanup (IAC), followed by High performance liquid chromatography with fluorescence (HPLC-FLC) detection. ELISA was also used for mycotoxin screening. On HPLC, the limits of detection and quantification for the four Aflatoxins were 3.9 × 10-7-1.4 × 10 -3 and 1.3 × 10-6 - 4.7 × 10-3 for samples collected in winter, and 3.7 × 10-7- 1.4 × 10-3, LOQ 1.2 × 10-6 - 4.6 × 10-3 for the summer samples. The average recoveries at three spiking levels ranged from 62 to 91% for the summer samples and 70-93% for those collected in winter. A linearity was observed for the analytes whose correlation coefficients were within the range of 0.9995 and 1.000 for the winter samples and 0.9995 and 1.000 for those collected in summer. The results showed that the contamination levels, especially for samples collected in summer were greater than the legally permissible limits. The t-test analysis shows that the mean and standard deviation of the four types of Aflatoxins considered were higher in summer than in winter. The findings of the study indicated that ginger, as for all agricultural commodities, are prone to mycotoxin contamination.
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Affiliation(s)
- Oluwadara Pelumi Omotayo
- Department of Biological Sciences, Faculty of Natural and Agricultural Science, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
- Food Security and Safety Niche, Faculty of Natural and Agricultural Science, North West University, Mafikeng Campus, Mmabatho 2735, South Africa
| | - Abiodun Olusola Omotayo
- Food Security and Safety Niche, Faculty of Natural and Agricultural Science, North West University, Mafikeng Campus, Mmabatho 2735, South Africa
| | - Olubukola Oluranti Babalola
- Department of Biological Sciences, Faculty of Natural and Agricultural Science, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
- Food Security and Safety Niche, Faculty of Natural and Agricultural Science, North West University, Mafikeng Campus, Mmabatho 2735, South Africa
| | - Mulunda Mwanza
- Food Security and Safety Niche, Faculty of Natural and Agricultural Science, North West University, Mafikeng Campus, Mmabatho 2735, South Africa
- Department of Animal Health, Faculty of Natural and Agricultural Science, North West University, Private Bag X2046, Mmabatho 2735, South Africa
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de Andrades D, Graebin NG, Kadowaki MK, Ayub MA, Fernandez-Lafuente R, Rodrigues RC. Immobilization and stabilization of different β-glucosidases using the glutaraldehyde chemistry: Optimal protocol depends on the enzyme. Int J Biol Macromol 2019; 129:672-678. [DOI: 10.1016/j.ijbiomac.2019.02.057] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/04/2019] [Accepted: 02/09/2019] [Indexed: 12/16/2022]
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A Simple Method for Beta-glucosidase Immobilization and Its Application in Soybean Isoflavone Glycosides Hydrolysis. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-017-0434-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Kumar S, Haq I, Prakash J, Raj A. Improved enzyme properties upon glutaraldehyde cross-linking of alginate entrapped xylanase from Bacillus licheniformis. Int J Biol Macromol 2017; 98:24-33. [DOI: 10.1016/j.ijbiomac.2017.01.104] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/10/2017] [Accepted: 01/23/2017] [Indexed: 12/24/2022]
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Immobilization of Glycoside Hydrolase Families GH1, GH13, and GH70: State of the Art and Perspectives. Molecules 2016; 21:molecules21081074. [PMID: 27548117 PMCID: PMC6274110 DOI: 10.3390/molecules21081074] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 12/20/2022] Open
Abstract
Glycoside hydrolases (GH) are enzymes capable to hydrolyze the glycosidic bond between two carbohydrates or even between a carbohydrate and a non-carbohydrate moiety. Because of the increasing interest for industrial applications of these enzymes, the immobilization of GH has become an important development in order to improve its activity, stability, as well as the possibility of its reuse in batch reactions and in continuous processes. In this review, we focus on the broad aspects of immobilization of enzymes from the specific GH families. A brief introduction on methods of enzyme immobilization is presented, discussing some advantages and drawbacks of this technology. We then review the state of the art of enzyme immobilization of families GH1, GH13, and GH70, with special attention on the enzymes β-glucosidase, α-amylase, cyclodextrin glycosyltransferase, and dextransucrase. In each case, the immobilization protocols are evaluated considering their positive and negative aspects. Finally, the perspectives on new immobilization methods are briefly presented.
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Çelik A, Dinçer A, Aydemir T. Characterization of β-glucosidase immobilized on chitosan-multiwalled carbon nanotubes (MWCNTS) and their application on tea extracts for aroma enhancement. Int J Biol Macromol 2016; 89:406-14. [DOI: 10.1016/j.ijbiomac.2016.05.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 04/29/2016] [Accepted: 05/02/2016] [Indexed: 12/01/2022]
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Szałapata K, Osińska-Jaroszuk M, Bryjak J, Jaszek M, Jarosz-Wilkołazka A. NOVEL APPLICATION OF POROUS AND CELLULAR MATERIALS FOR COVALENT IMMOBILIZATION OF PEPSIN. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2016. [DOI: 10.1590/0104-6632.20160332s20140111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | - J. Bryjak
- Wroclaw University of Technology, Poland
| | - M. Jaszek
- Maria Curie-Sklodowska University, Poland
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Liu L, Lv H, Jiang J, Zheng K, Ye W, Wang Z, Fan Y. Reinforced chitosan beads by chitin nanofibers for the immobilization of β-glucosidase. RSC Adv 2015. [DOI: 10.1039/c5ra14250d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chitin nanofibers prepared from partially deacetylated α-chitin were used as fillers to form DEChN/CS(chitosan) composite beads for application as immobilization supports.
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Affiliation(s)
- Liang Liu
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Hechan Lv
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Jie Jiang
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Ke Zheng
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Wenbo Ye
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Zhiguo Wang
- Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology
- College of Light Industry Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yimin Fan
- Jiangsu Key Lab of Biomass-based Green Fuel & Chemicals
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
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Borges DG, Baraldo A, Farinas CS, Giordano RDLC, Tardioli PW. Enhanced saccharification of sugarcane bagasse using soluble cellulase supplemented with immobilized β-glucosidase. BIORESOURCE TECHNOLOGY 2014; 167:206-13. [PMID: 24983691 DOI: 10.1016/j.biortech.2014.06.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 06/06/2014] [Accepted: 06/07/2014] [Indexed: 05/02/2023]
Abstract
The β-glucosidase (BG) enzyme plays a vital role in the hydrolysis of lignocellulosic biomass. Supplementation of the hydrolysis reaction medium with BG can reduce inhibitory effects, leading to greater conversion. In addition, the inclusion of immobilized BG can be a useful way of increasing enzyme stability and recyclability. BG was adsorbed on polyacrylic resin activated by carboxyl groups (BG-PC) and covalently attached to glyoxyl-agarose (BG-GA). BG-PC exhibited similar behavior to soluble BG in the hydrolysis of cellobiose, while BG-GA hydrolyzed the same substrate at a lower rate. However, the thermal stability of BG-GA was higher than that of free BG. Hydrolysis of pretreated sugarcane bagasse catalyzed by soluble cellulase supplemented with immobilized BG improved the conversion by up to 40% after 96 h of reaction. Both derivatives remained stable up to the third cycle and losses of activity were less than 50% after five cycles.
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Affiliation(s)
- Diogo Gontijo Borges
- Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, São Paulo, Brazil
| | - Anderson Baraldo
- Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, São Paulo, Brazil
| | - Cristiane Sanchez Farinas
- Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, São Paulo, Brazil; Embrapa Instrumentação, Rua XV de Novembro 1452, 13560-970 São Carlos, São Paulo, Brazil
| | - Raquel de Lima Camargo Giordano
- Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, São Paulo, Brazil
| | - Paulo Waldir Tardioli
- Department of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luiz, km 235, 13565-905 São Carlos, São Paulo, Brazil.
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