1
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Fernández-Santos J, Valls C, Cusola O, Roncero MB. Periodate oxidation of nanofibrillated cellulose films for active packaging applications. Int J Biol Macromol 2024; 267:131553. [PMID: 38621569 DOI: 10.1016/j.ijbiomac.2024.131553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/17/2024]
Abstract
An alternative packaging material based on cellulose that possesses excellent barrier properties and is potentially useful for active packaging has been developed. Cellulose nanofibril was efficiently and selectively oxidized with sodium periodate generating reactive aldehyde groups. These groups formed hemiacetal and hemialdal bonds during film formation and, consequently, highly transparent, elastic and strong films were created even under moisture saturation conditions. The periodate oxidation treatment additionally decreased the polarity of the films and considerably enhanced their water barrier properties. Thus, the water contact angle of films treated for 3 and 6 h was 97° and 102°, their water drop test value was higher than in untreated film (viz., 138 and 141 min with 3 and 6 h of treatment) and their water vapour transmission rate was substantially better (3.31 and 0.78 g m-2 day-1 with 3 and 6 h, respectively). The presence of aldehyde groups facilitated immobilization of the enzyme laccase, which efficiently captures oxygen and prevents food decay as a result. Laccase-containing films oxidized 80 % of Methylene Blue colorant and retained their enzymatic activity after storage for 1 month and 12 reuse cycles, opening the door to the possible creation of a reusable packaging to replace the single-use packaging.
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Affiliation(s)
- Julia Fernández-Santos
- CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya_BarcelonaTech, 08222 Terrassa, Spain.
| | - Cristina Valls
- CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya_BarcelonaTech, 08222 Terrassa, Spain.
| | - Oriol Cusola
- CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya_BarcelonaTech, 08222 Terrassa, Spain.
| | - M Blanca Roncero
- CELBIOTECH_Paper Engineering Research Group, Universitat Politècnica de Catalunya_BarcelonaTech, 08222 Terrassa, Spain.
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2
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Zhang W, Zhang P, Wang H, Li J, Dai SY. Design of biomass-based renewable materials for environmental remediation. Trends Biotechnol 2022; 40:1519-1534. [PMID: 36374762 PMCID: PMC9716580 DOI: 10.1016/j.tibtech.2022.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/11/2022]
Abstract
Various materials have been used to remove environmental contaminants for decades and have been an effective strategy for environmental cleanups. The current nonrenewable materials used for this purpose could impose secondary hazards and challenges in further downstream treatments. Biomass-based materials present viable, renewable, and sustainable solutions for environmental remediation. Recent biotechnology advances have developed biomaterials with new capacities, such as highly efficient biodegradation and treatment train integration. This review systemically discusses how biotechnology has empowered biomass-derived and bioinspired materials for environmental remediation sustainably and cost-effectively.
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Affiliation(s)
- Wan Zhang
- Synthetic and Systems Biology Innovation Hub, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Peng Zhang
- Synthetic and Systems Biology Innovation Hub, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Huaimin Wang
- Synthetic and Systems Biology Innovation Hub, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Jinghao Li
- Department of Energy, Environmental, and Chemical Engineering, The McKelvey School of Engineering, Washington University in St. Louis, MO 63130, USA
| | - Susie Y Dai
- Synthetic and Systems Biology Innovation Hub, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA.
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3
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Zhu G, Wang Y, Tan X, Xu X, Li P, Tian D, Jiang Y, Xie J, Xiao H, Huang X, Chen Y, Su Z, Qi J, Jia S, Zhang S. Synthesis of cellulose II-based spherical nanoparticle microcluster adsorbent for removal of toxic hexavalent chromium. Int J Biol Macromol 2022; 221:224-237. [PMID: 36084868 DOI: 10.1016/j.ijbiomac.2022.09.016] [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: 06/24/2022] [Revised: 08/28/2022] [Accepted: 09/03/2022] [Indexed: 11/17/2022]
Abstract
Since natural cellulose is mostly cellulose I and has a fibrous form, most cellulose-based adsorbents are fibrous/rod-shaped and exhibit the cellulose I crystal structure. This study reports a cellulose II-based spherical nanoparticle microcluster adsorbent (SNMA), synthesized from biomass by a bottom-up approach, for removing toxic hexavalent chromium (Cr(VI)). The basic structure of SNMA was investigated. Notably, the prepared adsorbent was a microcluster composed of spherical nanoparticles, while exhibiting cellulose II crystal structure, resulting in higher thermal stability and significantly enhanced adsorption performance. The adsorption process and mechanism of SNMA on Cr(VI) were studied in detail. The SNMA achieved a high adsorption capacity (225.94 mg/g) and receptor site density. The SNMA is expected to be used as a bio-based spherical nanoparticle microcluster adsorbent platform for the adsorption of different toxic substances by changing the surface functional groups of its components, spherical nanoparticles.
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Affiliation(s)
- Gaolu Zhu
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yu Wang
- College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xi Tan
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Xueju Xu
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Pan Li
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Dong Tian
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
| | - Yongze Jiang
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiulong Xie
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Hui Xiao
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Xingyan Huang
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuzhu Chen
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhiping Su
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinqiu Qi
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Shanshan Jia
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Shaobo Zhang
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China; Wood Industry and Furniture Engineering Key Laboratory of Sichuan Provincial Department of Education, Sichuan Agricultural University, Chengdu 611130, China.
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4
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Kamal S, Rehman S, Bibi I, Akhter N, Amir R, Alsanie WF, Iqbal HMN. Graphene oxide/chitosan composites as novel support to provide high yield and stable formulations of pectinase for industrial applications. Int J Biol Macromol 2022; 220:683-691. [PMID: 35987366 DOI: 10.1016/j.ijbiomac.2022.08.101] [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: 04/13/2022] [Revised: 07/01/2022] [Accepted: 08/14/2022] [Indexed: 11/24/2022]
Abstract
An extracellular pectinase from a mixed consortium of Bacillus sp. (BSP) was immobilized onto graphene oxide/chitosan composite (GO/CS) through covalent binding to enhance its recycling and operational stability features. Different parameters were optimized, including cross-linker concentration (%), time, pH, and GO/CS-pectinase ratios. GO/CS-pectinase was further characterized by FT-IR and XRD. The activity of GO/CS-pectinase was reached up to 804 μmolmin-1 with an immobilization efficiency of 80.64 ± 1.15 % under optimum conditions. GO/CS-pectinase exhibited a 3.0-folds higher half-life (t1/2) than free pectinase at 50, 55, and 60 °C, respectively. The Vmax and KM values of GO/CS-pectinase were found to be nearly equal to the free pectinase indicating that conformational flexibility was retained. Kd, t1/2, ∆G*, ∆H*, and ∆S* of both free pectinase and GO/CS-pectinase was 0.0339 & 0.0721 min-1, 9.62 and 40.44 min, 81.35, 90.72 kJmol-1, 47.098 & 63.635 kJmol-1, -102.86 & -81.340 Jmole-1 K-1. SEM morphological analysis further confirmed the successful binding of pectinase with GO/CS, which retained about 92 % of its original catalytic activity after ten consecutive reaction cycles. Finally, GO/CS-pectinase was employed for guava juice clarification which exhibited the turbidity reduction up to 81 % after 75 min of treatment.
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Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Government College University Faisalabad, Pakistan.
| | - Saima Rehman
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Ismat Bibi
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Naheed Akhter
- College of Allied Health Professionals, Faculty of Medical Sciences, Government College University Faisalabad, Pakistan
| | - Rija Amir
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Walaa F Alsanie
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Centre of Biomedical Sciences Research (CBSR), Deanship of Scientific Research, Taif University, Saudi Arabia
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico.
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5
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Ali AO, Ali KA, Shahein YE, Shokeer A, Sharada HM, Abdalla MS. Epoxy functionalized iron oxide magnetic nanoparticles for catalase enzyme covalent immobilization. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02180-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractAn aqueous solution of magnetite (Fe3O4) nanoparticles was synthesized using the method of co-precipitation. The nanoparticles were activated with epichlorohydrin for covalently immobilizing the catalase enzyme. The immobilization conditions were optimized as 0.07 mg/ml catalase for 1 h contact time. The properties of free and immobilized catalase were also investigated. The immobilized enzyme showed enhanced activity at alkaline pH and retained about 90% of its relative activity between pH (6–8) and resisted the high temperature and retained 90% of its relative activity at 50 °C. Kinetic parameters of free and immobilized catalase were investigated. While the Vmax value of the immobilized enzyme was reduced 2.4 fold compared to the free enzyme, the KM value of the immobilized catalase was higher by 2.2 fold than the free enzyme. The formulated matrix enhanced the velocity of the immobilized catalase more than the free one and was able to be used for about 18 cycles with retention of 80% of its activity. The immobilized catalase on epoxy functionalized iron oxide nanoparticles is promising as a nano-bio-catalyst carrying out in many industries and different fields.
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6
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Gupta GK, Dixit M, Kapoor RK, Shukla P. Xylanolytic Enzymes in Pulp and Paper Industry: New Technologies and Perspectives. Mol Biotechnol 2021; 64:130-143. [PMID: 34580813 DOI: 10.1007/s12033-021-00396-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/08/2021] [Indexed: 11/26/2022]
Abstract
The pulp and paper industry discharges massive amount of wastewater containing hazardous organochlorine compounds released during different processing stages. Therefore, some cost-effective and nonpolluting practices such as enzymatic treatments are required for the potential mitigation of effluents released in the environment. Various xylanolytic enzymes such as xylanases, laccases, cellulases and hemicellulases are used to hydrolyse raw materials in the paper manufacturing industry. These enzymes are used either individually or in combination, which has the efficient potential to be considered for bio-deinking and bio-bleaching components. They are highly dynamic, renewable, and high in specificity for enhancing paper quality. The xylanase act on the xylan and cellulases act on the cellulose fibers, and thus increase the bleaching efficacy of paper. Similarly, hemicellulase enzyme like endo-xylanases, arabinofuranosidase and β-D-xylosidases have been described as functional properties towards the biodegradation of biomass. In contrast, laccase enzymes act as multi-copper oxidoreductases, bleaching the paper by the oxidation and reduction process. Laccases possess low redox potential compared to other enzymes, which need some redox mediators to catalyze. The enzymatic process can be affected by various factors such as pH, temperature, metal ions, incubation periods, etc. These factors can either increase or decrease the efficiency of the enzymes. This review draws attention to the xylanolytic enzyme-based advanced technologies for pulp bleaching in the paper industry.
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Affiliation(s)
- Guddu Kumar Gupta
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Mandeep Dixit
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Rajeev Kumar Kapoor
- Enzyme and Fermentation Technology Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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7
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Carli S, Salgado JCS, Meleiro LP, Ward RJ. Covalent Immobilization of Chondrostereum purpureum Endopolygalacturonase on Ferromagnetic Nanoparticles: Catalytic Properties and Biotechnological Application. Appl Biochem Biotechnol 2021; 194:848-861. [PMID: 34553326 DOI: 10.1007/s12010-021-03688-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 09/08/2021] [Indexed: 11/26/2022]
Abstract
Pectinases are widely used in a variety of industrial processes. However, their application is limited by low catalytic processivity, reduced stability, high cost, and poor re-use compatibility. These drawbacks may be overcome by enzyme immobilization with ferromagnetic nanoparticles, which are easily recovered by a magnetic field. In this work, an endopolygalacturonase from Chondrostereum purpureum (EndoPGCp) expressed in Pichia pastoris was immobilized on glutaraldehyde-activated chitosan ferromagnetic nanoparticles (EndoPGCp-MNP) and used to supplement a commercial enzyme cocktail. No significant differences in biochemical and kinetic properties were observed between EndoPGCp-MNP and EndoPGCp, although the EndoPGCp-MNP showed slightly increased thermostability. Cocktail supplementation with EndoPGCp-MNP increased reducing sugar release from orange wastes by 1.8-fold and showed a synergistic effect as compared to the free enzyme. Furthermore, EndoPGCp-MNP retained 65% of the initial activity after 7 cycles of re-use. These properties suggest that EndoPGCp-MNP may find applications in the processing of pectin-rich agroindustrial residues.
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Affiliation(s)
- Sibeli Carli
- Departamento de Química, Faculdade de Filosofia, Ciências E Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, 14040-901, Brazil
| | - Jose Carlos Santos Salgado
- Departamento de Química, Faculdade de Filosofia, Ciências E Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, 14040-901, Brazil
| | - Luana Parras Meleiro
- Departamento de Química, Faculdade de Filosofia, Ciências E Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, 14040-901, Brazil
| | - Richard John Ward
- Departamento de Química, Faculdade de Filosofia, Ciências E Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, 14040-901, Brazil.
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8
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Electrostatic and Hydrogen Bond Immobilization of Trypsine onto pH-Sensitive N-Vinylpyrrolidone and 4-Vinylpyridine Radical co-Grafted Chitosan Based on Hydrogel. Macromol Res 2021. [DOI: 10.1007/s13233-021-9015-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Sahin S, Ozmen I. Immobilization of pectinase on Zr‐treated pumice for fruit juice industry. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Selmihan Sahin
- Arts and Sciences Faculty, Department of Chemistry Suleyman Demirel University Isparta Turkey
| | - Ismail Ozmen
- Arts and Sciences Faculty, Department of Chemistry Suleyman Demirel University Isparta Turkey
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10
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Immobilization of Trypsin from Porcine Pancreas onto Chitosan Nonwoven by Covalent Bonding. Polymers (Basel) 2019; 11:polym11091462. [PMID: 31500182 PMCID: PMC6780051 DOI: 10.3390/polym11091462] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 11/17/2022] Open
Abstract
The present study deals with the potential application of chitosan nonwoven for biomedical textiles based on enzyme immobilization. For this, chitosan nonwoven was first cross-linked with glutaraldehyde to introduce aldehyde groups at optimal conditions. To immobilize the enzyme trypsin onto glutaraldehyde-pre-activated chitosan nonwoven, several parameters such as pH, enzyme concentration, and reaction times were investigated. In addition, the pH, thermal stability, storage stability, and reusability of immobilized trypsin were examined. We found that the optimal immobilization conditions for trypsin were pH 8.5, enzyme concentration of 8% (owf), and treatment time of 30 min. Trypsin was immobilized at 25 °C efficiently. The immobilized trypsin showed lower pH stability and better thermal stability than free trypsin. The immobilized trypsin showed 50% of its initial activity after being used 15 times and 80% of that after 20 days of storage at 4 °C. SEM analysis also confirmed that trypsin was immobilized on chitosan nonwoven.
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11
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Immobilized enzyme on pulp fiber through layer-by-layer technique using cationic polyacrylamide for whitewater treatment from papermaking. Bioprocess Biosyst Eng 2019; 42:1583-1589. [DOI: 10.1007/s00449-019-02155-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/04/2019] [Indexed: 01/02/2023]
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12
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Bilal M, Iqbal HMN. Naturally-derived biopolymers: Potential platforms for enzyme immobilization. Int J Biol Macromol 2019; 130:462-482. [PMID: 30825566 DOI: 10.1016/j.ijbiomac.2019.02.152] [Citation(s) in RCA: 161] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 02/17/2019] [Accepted: 02/26/2019] [Indexed: 02/08/2023]
Abstract
Naturally-derived biopolymers such as alginate, chitosan, cellulose, agarose, guar gum/guaran, agar, carrageenan, gelatin, dextran, xanthan, and pectins, etc. have appealed significant attention over the past several years owing to their natural abundance and availability all over the years, around the globe. In addition, their versatile properties such as non-toxicity, biocompatibility, biodegradability, flexibility, renewability, and the availability of numerous reactive sites offer significant functionalities with multipurpose applications. At present, intensive research efforts have been focused on engineering enzymes using natural biopolymers as novel support/composite materials for diverse applications in biomedical, environmental, pharmaceutical, food and biofuel/energy sectors. Immobilization appears as a straightforward and promising approach to developing biocatalysts with improved catalytic properties as compared to their free counterparts. Biopolymers-assisted enzymes are more stable, robust, and recoverable than that of free forms, and can be employed for continuous biocatalytic reactions. The present review highlights the recent developments and use of biopolymers and their advanced composites as support carriers for the immobilization of a variety of different enzymes to develop biocatalysts with desired catalytic activity and stability characteristics for emerging applications.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
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13
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Preparation, characterization and catalytic behavior of pectinase covalently immobilized onto sodium alginate/graphene oxide composite beads. Food Chem 2018; 253:185-193. [DOI: 10.1016/j.foodchem.2018.01.157] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 12/27/2017] [Accepted: 01/23/2018] [Indexed: 01/23/2023]
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14
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Plappert SF, Quraishi S, Pircher N, Mikkonen KS, Veigel S, Klinger KM, Potthast A, Rosenau T, Liebner FW. Transparent, Flexible, and Strong 2,3-Dialdehyde Cellulose Films with High Oxygen Barrier Properties. Biomacromolecules 2018; 19:2969-2978. [PMID: 29757619 PMCID: PMC6041771 DOI: 10.1021/acs.biomac.8b00536] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
2,3-Dialdehyde
cellulose (DAC) of a high degree of oxidation (92%
relative to AGU units) prepared by oxidation of microcrystalline cellulose
with sodium periodate (48 °C, 19 h) is soluble in hot water.
Solution casting, slow air drying, hot pressing, and reinforcement
by cellulose nanocrystals afforded films (∼100 μm thickness)
that feature intriguing properties: they have very smooth surfaces
(SEM), are highly flexible, and have good light transmittance for
both the visible and near-infrared range (89–91%), high tensile
strength (81–122 MPa), and modulus of elasticity (3.4–4.0
GPa) depending on hydration state and respective water content. The
extraordinarily low oxygen permeation of <0.005 cm3 μm
m–2 day–1 kPa–1 (50% RH) and <0.03 cm3 μm m–2 day–1 kPa–1 (80% RH) can be
regarded as a particularly interesting feature of DAC films. The unusually
high initial contact angle of about 67° revealed a rather low
hydrophilicity compared to other oxidatively modified or unmodified
cellulosic materials which is most likely the result of inter- and
intramolecular hemiacetal and hemialdal formation during drying and
pressing.
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Affiliation(s)
| | | | | | - Kirsi S Mikkonen
- Department of Food and Environmental Sciences , University of Helsinki , P.O. Box 27, Helsinki , Finland
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15
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Improvement of activity, thermo-stability and fruit juice clarification characteristics of fungal exo-polygalacturonase. Int J Biol Macromol 2017; 95:974-984. [DOI: 10.1016/j.ijbiomac.2016.10.086] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/21/2016] [Accepted: 10/24/2016] [Indexed: 11/18/2022]
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16
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Ramírez Tapias YA, Rivero CW, Gallego FL, Guisán JM, Trelles JA. Stabilization by multipoint covalent attachment of a biocatalyst with polygalacturonase activity used for juice clarification. Food Chem 2016; 208:252-7. [DOI: 10.1016/j.foodchem.2016.03.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 12/13/2022]
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17
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Abstract
Enzymes are excellent catalysts in many applications due to their biocompatibility, low energy consumption, unique selectivity, and mild reaction condition. However, some disadvantages limit the usage of enzymes in end uses, such as low stabilities and difficult recovery. In order to overcome these disadvantages, enzyme immobilization was developed. Among various kinds of substrates for attaching enzyme, cellulose and its derivatives are one of the ideal matrixes because they are low cost, nontoxic, renewable, biodegradable, and biocompatible. In this review, we summarize recent progress in the research of enzyme immobilization on cellulose matrixes.
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Affiliation(s)
- Yue Liu
- School of Human Ecology, The University of Texas at Austin, Austin, TX, USA
- Department of Chemistry, School of Science, Tianjin University, Tianjin, China
| | - Jonathan Y Chen
- School of Human Ecology, The University of Texas at Austin, Austin, TX, USA
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18
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Alagöz D, Tükel SS, Yildirim D. Immobilization of pectinase on silica-based supports: Impacts of particle size and spacer arm on the activity. Int J Biol Macromol 2016; 87:426-32. [DOI: 10.1016/j.ijbiomac.2016.03.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 10/22/2022]
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19
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Bustamante-Vargas CE, de Oliveira D, Valduga E, Venquiaruto LD, Paroul N, Backes GT, Dallago RM. Biomimetic Mineralization of the Alginate/Gelatin/Calcium Oxalate Matrix for Immobilization of Pectinase: Influence of Matrix on the Pectinolytic Activity. Appl Biochem Biotechnol 2016; 179:1060-72. [DOI: 10.1007/s12010-016-2050-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 03/14/2016] [Indexed: 12/30/2022]
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20
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Xiao H, He B, Li J. Adsorption of polygalacturonic acid on crosslinked polystyrene spheres with cationic polyelectrolyte. RSC Adv 2016. [DOI: 10.1039/c5ra25247d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In a papermaking system, severe drawbacks on machine runnability and paper quality occur even as water consumption is not decreased due to a build-up of dissolved and colloidal substances (DCS) in the whitewater.
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Affiliation(s)
- He Xiao
- College of Materials Engineering
- Fujian Agriculture and Forestry University
- Fuzhou
- China
| | - Beihai He
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
| | - Junrong Li
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou
- China
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21
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Xiao H, He B, Qian L, Li J. Cationic polystyrene spheres for removal of anionic contaminants in white water of papermaking. J Appl Polym Sci 2015. [DOI: 10.1002/app.41379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- He Xiao
- State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou China 510641
| | - Beihai He
- State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou China 510641
- National Engineering Research Center of Papermaking & Pollution Control; South China University of Technology; Guangzhou China 510641
| | - Liying Qian
- State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou China 510641
| | - Junrong Li
- State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou China 510641
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