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Elgharbi F, Ben Hlima H, Ben Mabrouk S, Hmida-Sayari A. Expression of a Copper Activated Xylanase in Yeast: Location of the His-Tag in the Protein Significantly Affects the Enzymatic Properties. Mol Biotechnol 2022:10.1007/s12033-022-00606-w. [DOI: 10.1007/s12033-022-00606-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/07/2022] [Indexed: 11/30/2022]
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2
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Liu C, Zhang W, Li Y, Pan K, OuYang K, Song X, Xiong X, Zang Y, Wang L, Qu M, Zhao X. Characterization of yeast cell surface displayed Lentinula edodes xylanase and its effects on the hydrolysis of wheat. Int J Biol Macromol 2022; 199:341-347. [PMID: 35026222 DOI: 10.1016/j.ijbiomac.2021.12.178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 12/20/2021] [Accepted: 12/28/2021] [Indexed: 12/11/2022]
Abstract
The current study displayed a xylanase from Lentinula edodes on the surface of Pichia pastoris (sdLeXyn) and investigated its properties and effects on the wheat hydrolysis. Fluorescence microscope results showed that sdLeXyn was successfully anchored and displayed on the surface of P. pastoris X-33 cells. The highest activity of sdLeXyn was obtained at pH 3.0 and 50 °C. The sdLeXyn exhibited anti-high temperature property and showed broad temperature adaptability (>55% of the highest activity at 20-80 °C). The sdLeXyn was very stable at room temperature and could remain functionally stable at 50 °C for 3 h. The Km value was greater in sdLeXyn than that in free recombinant L. edodes xylanase. The sdLeXyn exhibited well resistance to Mn2+, Zn2+, Ca2+, Na+, Cu2+, Mg2+, K+, Ni2+ (1 mM and 5 mM) except Cu2+, which reduced the sdLeXyn activity by 54.5% at 5 mM dosage. The activity of sdLeXyn was increased by 42.6% by 5 mM Mn2+, 5 mM DTT, Trition X-100, and Tween 20 did not affect the activity of sdLeXyn, but SDS and EDTA slightly reduced it by 12.8% and 14.6%, respectively. The sdLeXyn could resist the degradation of pepsin, efficiently hydrolyzed wheat and reduced the viscosity of wheat hydrolysate. Current data indicate that the sdLeXyn has a potential as a feed additive to improve the utilization of wheat in poultry production.
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Affiliation(s)
- Chanjuan Liu
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Wenjing Zhang
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Yanjiao Li
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Ke Pan
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Kehui OuYang
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Xiaozhen Song
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Xiaowen Xiong
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Yitian Zang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Lei Wang
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, China
| | - Mingren Qu
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
| | - Xianghui Zhao
- Jiangxi Province Key Laboratory of Animal Nutrition/Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China.
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3
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Co-elicitation of lignocelluloytic enzymatic activities and metabolites production in an Aspergillus-Streptomyces co-culture during lignocellulose fractionation. CURRENT RESEARCH IN MICROBIAL SCIENCES 2022; 3:100108. [PMID: 35243445 PMCID: PMC8861581 DOI: 10.1016/j.crmicr.2022.100108] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/20/2022] [Accepted: 02/05/2022] [Indexed: 11/24/2022] Open
Abstract
An easy set-up of the co-cultures from 2 different microorganisms (filamentous fungi and bacteria) from different microbial domains resulting into a greater and more diverse metabolic and lignocellulolytic content. An over expression of several key enzymatic lignocellulolytic activities is observed during the co-coculture due to elicitation. An elicitation of some specific biosynthetic cluster genes is observed due to the activation of those the complexity of the carbon compounds present in the lignocellulose. An elicitation of some specific biosynthetic cluster genes is observed only during the co-culture experiment. A specific microbial crosstalk and interaction exists at the species level between the 3 Streptomyces and the fungi leading to a specific of lignocellulolytic enzyme and secondary metabolite production.
Lignocellulose, the most abundant biomass on Earth, is a complex recalcitrant material mainly composed of three fractions: cellulose, hemicelluloses and lignins. In nature, lignocellulose is efficiently degraded for carbon recycling. Lignocellulose degradation involves numerous microorganisms and their secreted enzymes that act in synergy. Even they are efficient, the natural processes for lignocellulose degradation are slow (weeks to months). In this study, the objective was to study the synergism of some microorganisms to achieve efficient and rapid lignocellulose degradation. Wheat bran, an abundant co-product from milling industry, was selected as lignocellulosic biomass. Mono-cultures and co-cultures involving one A.niger strain fungi never sequenced before (DSM 1957) and either one of three different Streptomyces strains were tested in order to investigate the potentiality for efficient lignocellulose degradability. Comparative genomics of the strain Aspergillus niger DSM 1957 revealed that it harboured the maximum of AA, CBM, CE and GH among its closest relative strains. The different co-cultures set-up enriched the metabolic diversity and the lignocellulolytic CAZyme content. Depending on the co-cultures, an over-expression of some enzymatic activities (xylanase, glucosidase, arabinosidase) was observed in the co-cultures compared to the mono-cultures suggesting a specific microbial cross-talk depending on the microbial partner. Moreover, metabolomics for each mono and co-culture was performed and revealed an elicitation of the production of secondary metabolites and the activation of silent biosynthetic cluster genes depending on the microbial co-culture. This opens opportunities for the bioproduction of molecules of interest from wheat bran.
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Paecilomyces variotii xylanase production, purification and characterization with antioxidant xylo-oligosaccharides production. Sci Rep 2021; 11:16468. [PMID: 34389757 PMCID: PMC8363652 DOI: 10.1038/s41598-021-95965-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 07/22/2021] [Indexed: 02/07/2023] Open
Abstract
Paecilomyces variotii xylanase was, produced in stirred tank bioreactor with yield of 760 U/mL and purified using 70% ammonium sulfate precipitation and ultra-filtration causing 3.29-fold purification with 34.47% activity recovery. The enzyme purity was analyzed on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) confirming its monomeric nature as single band at 32 KDa. Zymography showed xylan hydrolysis activity at the same band. The purified enzyme had optimum activity at 60 °C and pH 5.0. The pH stability range was 5-9 and the temperature stability was up 70 °C. Fe2+and Fe3+ exhibited inhibition of xylanase enzyme while Cu2+, Ca2+, Mg2+ and Mn2+ stimulated its activity. Mercaptoethanol stimulated its activity; however, Na2-EDTA and SDS inhibited its activity. The purified xylanase could hydrolyze beechwood xylan but not carboxymethyl cellulose (CMC), avicel or soluble starch. Paecilomyces variotii xylanase Km and Vmax for beechwood were determined to be 3.33 mg/mL and 5555 U/mg, respectively. The produced xylanase enzyme applied on beech xylan resulted in different types of XOS. The antioxidant activity of xylo-oligosaccharides increased from 15.22 to 70.57% when the extract concentration was increased from 0.1 to 1.5 mg/mL. The enzyme characteristics and kinetic parameters indicated its high efficiency in the hydrolysis of xylan and its potential effectiveness in lignocellulosic hydrolysis and other industrial application. It also suggests the potential of xylanase enzyme for production of XOS from biomass which are useful in food and pharmaceutical industries.
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Mechri S, Zaraî Jaouadi N, Bouacem K, Allala F, Bouraoui A, Ferard C, Rekik H, Noiriel A, Abousalham A, Bouanane-Darenfed A, Hacène H, Lederer F, Baciou L, Jaouadi B. Cloning and heterologous expression of subtilisin SAPN, a serine alkaline protease from Melghiribacillus thermohalophilus Nari2AT in Escherichia coli and Pichia pastoris. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Saleem A, Waris S, Ahmed T, Tabassum R. Biochemical characterization and molecular docking of cloned xylanase gene from Bacillus subtilis RTS expressed in E. coli. Int J Biol Macromol 2020; 168:310-321. [PMID: 33309670 DOI: 10.1016/j.ijbiomac.2020.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/21/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
This study employed mesophilic Bacillus subtilis RTS strain isolated from soil with high xylanolytic activity. A 642 bp (xyn) xylanase gene (GenBank accession number MT677937) was extracted from Bacillus subtilis RTS and cloned in Escherichia coli BL21 cells using pET21c expression system. The cloned gene belongs to glycoside hydrolase family 11 with protein size of approximately 23 KDa. The recombinant xylanase showed optimal enzyme activity at 60 °C and at pH 6.5. Thermostability of recombinant xylanase was observed between the temperature range of 30-60 °C. Xylanase also remained stable in different concentration of various organic solvents (ethanol, butanol). This might be due to the formation of protein/organic solvent interface which prevents stripping of essential water molecules from enzyme, thus enzyme conformation and activity remained stable. Finally, the molecular docking analysis through AutoDock Vina showed the involvement of Tyr 108, Arg140 and Pro144 in protein-ligand interaction, which stabilizes this complex. The observed stability of recombinant xylanase at higher temperature and in the presence of organic solvent (ethanol, butanol) suggested possible application of this enzyme in biofuel and other industrial applications.
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Affiliation(s)
- Aimen Saleem
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan; Pakistan Institute of Engineering and Applied Science (PIEAS), Islamabad, Pakistan
| | - Saboora Waris
- Dept of Biological Sciences, Quaid- e-Azam University, Islamabad, Pakistan; Dept of Molecular Biology, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan
| | - Toheed Ahmed
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Romana Tabassum
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan; Pakistan Institute of Engineering and Applied Science (PIEAS), Islamabad, Pakistan.
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7
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Co-Immobilization of Xylanase and Scaffolding Protein onto an Immobilized Metal Ion Affinity Membrane. Catalysts 2020. [DOI: 10.3390/catal10121408] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lignocellulosic biomass conversion technology seeks to convert agricultural waste to sugars through the use of various cellulases and hemicellulases. In practice, the application of free enzymes might increase the cost of the process due to difficulties with recovery of the enzymes and products. Immobilization might be an effective approach for recovering the hydrolysis products and improving the stability and reusability of the enzymes. In this study, we used a recombinant genetic engineering approach to construct a scaffold protein gene (CipA) and a xylanase gene (XynC) fused to a dockerin gene (DocT). After expressing CipA and XynC-DocT (XynCt) genes using E. coli hosts, the crude extracts were collected. An immobilized metal ion affinity membrane/Co2+ ion (IMAM-Co2+) system was prepared to adsorb CipA in its crude extract, thereby allowing simultaneous purification and immobilization of CipA protein. A similar approach was applied for the adsorption of XynCt protein, exploiting the interaction between the cohesin units in IMAM-Co2+-CipA and the dockerin unit in XynCt. The activity of the xylanase unit was enhanced in the presence of Co2+ for both the free XynCt enzymes and the immobilized CipA-XynCt. The heat resistance and stability over a wide range of values of pH of the immobilized CipA-XynCt were superior to those of the free XynCt. Furthermore, the immobilized CipA-XynCt retained approximately 80% of its initial activity after seven reaction cycles. The values of Km and νmax of IMAM-Co2+-CipA-XynCt (1.513 mg/mL and 3.831 U/mg, respectively) were the best among those of the other tested forms of XynCt.
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Cloning, expression and characterization of a thermo-alkali-stable xylanase from Aspergillus oryzae LC1 in Escherichia coli BL21(DE3). Protein Expr Purif 2020; 168:105551. [DOI: 10.1016/j.pep.2019.105551] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/26/2019] [Accepted: 12/11/2019] [Indexed: 11/21/2022]
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9
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Sun T, Yan P, Zhan N, Zhang L, Chen Z, Zhang A, Shan A. The optimization of fermentation conditions for Pichia pastoris GS115 producing recombinant xylanase. Eng Life Sci 2020; 20:216-228. [PMID: 32874185 PMCID: PMC7447871 DOI: 10.1002/elsc.201900116] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 12/13/2019] [Accepted: 01/07/2020] [Indexed: 01/09/2023] Open
Abstract
Xylanase is a member of an important family of enzymes that has been used in many biotechnological processes. However, the overall cost of enzyme production has been the main problem in the industrial application of enzymes. To obtain maximum xylanase production, statistical approaches based on the Plackett-Burman design and response surface methodology were employed. The results of the statistical analyses demonstrated that the optimal conditions for increased xylanase production were the following: inoculum size, 3.8%; maize meal, 4.5%; histidine, 0.6%; methanol, 1%; culture volume, 20%; bean pulp, 30 g L-1; and Tween-80, 0.8%; and pH 5.0. Verification of the optimization demonstrated that 3273 U mL-1 xylanase was observed under the optimal conditions in shake flask experiments. SDS-PAGE results showed that the size of xylanase protein was about 23 kDa. The results showed that the xylanase produced by fermentation came from Aspergillus Niger by MALDI-TOF-MS. The optimized medium resulted in 2.1- and 1.4-fold higher the activity of xylanase compared with the unoptimized medium (the main nutrients are maize meal and bean pulp) and laboratory medium (the main nutrients are yeast extract and peptone), respectively. The optimization of fermentation conditions is an effective means to reduce production cost and improve xylanase activity.
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Affiliation(s)
- Taotao Sun
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
| | - Ping Yan
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
| | - Na Zhan
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
| | - Licong Zhang
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
| | - Zhihui Chen
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
| | - Aizhong Zhang
- College of Animal Science & Veterinary MedicineHeilongjiang Bayi Agricultural UniversityDaqingP. R. China
| | - Anshan Shan
- Laboratory of Molecular Nutrition and Immunity, The Institute of Animal NutritionNortheast Agricultural UniversityHarbinP. R. China
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Spent Coffee Waste as a Potential Media Component for Xylanase Production and Potential Application in Juice Enrichment. Foods 2019; 8:foods8110585. [PMID: 31744199 PMCID: PMC6915662 DOI: 10.3390/foods8110585] [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: 10/20/2019] [Revised: 11/04/2019] [Accepted: 11/14/2019] [Indexed: 11/17/2022] Open
Abstract
In this study, spent coffee waste (SCW) was used as the sole carbon source for xylanase production in solid state fermentation mode using Aspergillus niger. A Box-Behnken design was constructed using three parameters viz. temperature, initial moisture content, and log number of spores to determine the optimal fermentation condition. The best fermentation conditions for xylanase production were found to be incubation at 30 °C with an initial moisture content of 70% and using an inoculum of 6.5 × 106 spores/g of dry SCW. Furthermore, the design of experiments revealed that maintaining a medium composition of 0.2 g of yeast extract, 0.04 g of K2HPO4, and 0.03 g of MgSO4 increased xylanase production. Under optimised solid-state fermentation conditions an enzyme activity of 6495.6 IU/g of dry SCW was recorded, which was approximately 1.39-fold higher than that of control (4649 IU/g of dry SCW). The efficacy of the purified xylanase as a juice enrichment agent for strawberry, blueberry, and raspberry pulp was tested.
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Mongkorntanyatip K, Limsakul P, Ratanakhanokchai K, Khunrae P. Overexpression and characterization of alkaliphilic Bacillus firmus strain K-1 xylanase. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.anres.2018.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Boucherba N, Gagaoua M, Bouanane-Darenfed A, Bouiche C, Bouacem K, Kerbous MY, Maafa Y, Benallaoua S. Biochemical properties of a new thermo- and solvent-stable xylanase recovered using three phase partitioning from the extract of Bacillus oceanisediminis strain SJ3. BIORESOUR BIOPROCESS 2017; 4:29. [PMID: 28736694 PMCID: PMC5498614 DOI: 10.1186/s40643-017-0161-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/01/2017] [Indexed: 11/29/2022] Open
Abstract
The present study investigates the production and partial biochemical characterization of an extracellular thermostable xylanase from the Bacillus oceanisediminis strain SJ3 newly recovered from Algerian soil using three phase partitioning (TPP). The maximum xylanase activity recorded after 2 days of incubation at 37 °C was 20.24 U/ml in the presence of oat spelt xylan. The results indicated that the enzyme recovered in the middle phase of TPP system using the optimum parameters were determined as 50% ammonium sulfate saturation with 1.0:1.5 ratio of crude extract: t-butanol at pH and temperature of 8.0 and 10 °C, respectively. The xylanase was recovered with 3.48 purification fold and 107% activity recovery. The enzyme was optimally active at pH 7.0 and was stable over a broad pH range of 5.0–10. The optimum temperature for xylanase activity was 55 °C and the half-life time at this temperature was of 6 h. At this time point the enzyme retained 50% of its activity after incubation for 2 h at 95 °C. The crude enzyme resist to sodium dodecyl sulfate and β-mercaptoethanol, while all the tested ions do not affect the activity of the enzyme. The recovered enzyme is, at least, stable in tested organic solvents except in propanol where a reduction of 46.5% was observed. Further, the stability of the xylanase was higher in hydrophobic solvents where a maximum stability was observed with cyclohexane. These properties make this enzyme to be highly thermostable and may be suggested as a potential candidate for application in some industrial processes. To the best of our knowledge, this is the first report of xylanase activity and recoverey using three phase partitioning from B. oceanisediminis.
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Affiliation(s)
- Nawel Boucherba
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, 06000 Bejaia, Algeria
| | - Mohammed Gagaoua
- INATAA, Université des Frères Mentouri Constantine 1, Route de Ain El-Bey, 25000 Constantine, Algeria.,UMR1213 Herbivores, INRA, VetAgro Sup, Clermont Université, Université de Lyon, 63122 Saint-Genès-Champanelle, France
| | - Amel Bouanane-Darenfed
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences, Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Cilia Bouiche
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, 06000 Bejaia, Algeria
| | - Khelifa Bouacem
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences, Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Mohamed Yacine Kerbous
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, 06000 Bejaia, Algeria
| | - Yacine Maafa
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, 06000 Bejaia, Algeria
| | - Said Benallaoua
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, 06000 Bejaia, Algeria
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Extracellular expression of alkali tolerant xylanase from Bacillus subtilis Lucky9 in E. coli and application for xylooligosaccharides production from agro-industrial waste. Int J Biol Macromol 2017; 96:249-256. [DOI: 10.1016/j.ijbiomac.2016.11.032] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 01/11/2023]
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14
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Carvalho EA, Dos Santos Góes LM, Uetanabaro APT, da Silva EGP, Rodrigues LB, Pirovani CP, da Costa AM. Thermoresistant xylanases from Trichoderma stromaticum: Application in bread making and manufacturing xylo-oligosaccharides. Food Chem 2016; 221:1499-1506. [PMID: 27979121 DOI: 10.1016/j.foodchem.2016.10.144] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 10/13/2016] [Accepted: 10/28/2016] [Indexed: 10/20/2022]
Abstract
The enzymes Xyl1 and Xyl2 from T. stromaticum were purified and identified by mass spectrometry (MALDI-TOF/MS). Xyl1 contained three proteins with similarity to xylanase family 10, 62 and anarabinofuranosidase of the Trichoderma genus and Xyl2 contained a protein with similarity to endo-1,4-β-xylanase. High xylanase activity was found at 50°C for Xyl1 and 60°C for Xyl2 and pH 5.0 for both, retaining more than 80% of activities for one hour at 60°C and pH 5-8. Ag2+ and β-mercaptoethanol increased while SDS and EDTA inhibited the xylanase activity of both Xyl1 and Xyl2 extracts. The Km and Vmax values for purified Xyl2 were 9.6mg/mL and 28.57μmol/min/mg, respectively. In application tests, both Xyl1 and Xyl2 were effective in degrading beechwood xylan to produce xylo-oligosaccharides. In baking, adding Xyl1 increased the softness and volume of wheat bread and whole grain bread, qualities increasingly desired by consumers in this segment.
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Affiliation(s)
- Elck Almeida Carvalho
- Food Technology Center, Instituto Federal Baiano, Uruçuca, Bahia, Brazil; Department of Biological Sciences, Universidade Estadual de Santa Cruz, 45662-900 Ilhéus, Bahia, Brazil
| | | | - Ana Paula T Uetanabaro
- Department of Biological Sciences, Universidade Estadual de Santa Cruz, 45662-900 Ilhéus, Bahia, Brazil
| | | | - Luciano Brito Rodrigues
- Departament of Animal and Rural Technology, Universidade Estadual do Sudoeste da Bahia, Itapetinga, Bahia, Brazil
| | - Carlos Priminho Pirovani
- Department of Biological Sciences, Universidade Estadual de Santa Cruz, 45662-900 Ilhéus, Bahia, Brazil
| | - Andréa Miura da Costa
- Department of Biological Sciences, Universidade Estadual de Santa Cruz, 45662-900 Ilhéus, Bahia, Brazil.
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15
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Amel BD, Nawel B, Khelifa B, Mohammed G, Manon J, Salima KG, Farida N, Hocine H, Bernard O, Jean-Luc C, Marie-Laure F. Characterization of a purified thermostable xylanase from Caldicoprobacter algeriensis sp. nov. strain TH7C1(T). Carbohydr Res 2015; 419:60-8. [PMID: 26687892 DOI: 10.1016/j.carres.2015.10.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 10/25/2015] [Accepted: 10/26/2015] [Indexed: 10/22/2022]
Abstract
The present study investigates the purification and biochemical characterization of an extracellular thermostable xylanase (called XYN35) from Caldicoprobacter algeriensis sp. nov., strain TH7C1(T), a thermophilic, anaerobic strain isolated from the hydrothermal hot spring of Guelma (Algeria). The maximum xylanase activity recorded after 24 h of incubation at 70 °C and in an optimized medium containing 10 g/L mix birchwood- and oats spelt-xylan was 250 U/mL. The pure protein was obtained after heat treatment (1 h at 70 °C), followed by sequential column chromatographies on Sephacryl S-200 gel filtration and Mono-S Sepharose anion-exchange. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis indicated that the purified enzyme is a monomer with a molecular mass of 35,075.10 Da. The results from amino-acid sequence analysis revealed high homology between the 21 NH2-terminal residues of XYN35 and those of bacterial xylanases. The enzyme showed optimum activity at pH 11 and 70 °C. While XYN35 was activated by Ca(2+), Mn(2+), and Mg(2+), it was completely inhibited by Hg(2+) and Cd(2+). The xylanase showed higher specific activity on soluble oat-spelt xylan, followed by beechwood xylan. This enzyme was also noted to obey the Michaelis-Menten kinetics, with Km and kcat values on oat-spelt xylan being 1.33 mg/mL and 400 min(-1), respectively. Thin-layer chromatography soluble oat-spelt xylan (TLC) analysis showed that the final hydrolyzed products of the enzyme from birchwood xylan were xylose, xylobiose, and xylotriose. Taken together, the results indicated that the XYN35 enzyme has a number of attractive biochemical properties that make it a potential promising candidate for future application in the pulp bleaching industry.
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Affiliation(s)
- Bouanane-Darenfed Amel
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria; Aix Marseille University-IRD-University of Toulon-CNRS-Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France.
| | - Boucherba Nawel
- Laboratory of Applied Microbiology, Faculty of Nature Science and Life, University of Bejaia, Targa Ouzemmour, 06000 Bejaia, Algeria
| | - Bouacem Khelifa
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Gagaoua Mohammed
- Maquav Team, Bioqual Laboratory, INATAA, Frères Mentouri Constantine 1 University, Ain El-Bey Street, 25000 Constantine, Algeria
| | - Joseph Manon
- Aix Marseille University-IRD-University of Toulon-CNRS-Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Kebbouche-Gana Salima
- Laboratory of Biological Resources Conservation and Valuation, Faculty of Sciences, M'Hamed Bougara-Boumerdes University, 06000 Boumerdes, Algeria
| | - Nateche Farida
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Hacene Hocine
- Laboratory of Cellular and Molecular Biology, Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology of Houari Boumediene (USTHB), PO Box 32, El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Ollivier Bernard
- Aix Marseille University-IRD-University of Toulon-CNRS-Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Cayol Jean-Luc
- Aix Marseille University-IRD-University of Toulon-CNRS-Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
| | - Fardeau Marie-Laure
- Aix Marseille University-IRD-University of Toulon-CNRS-Mediterranean Institute of Oceanography (MIO), UM 110, 13288 Marseille, France
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Expression of an Aspergillus niger xylanase in yeast: Application in breadmaking and in vitro digestion. Int J Biol Macromol 2015; 79:103-9. [DOI: 10.1016/j.ijbiomac.2015.04.053] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 04/13/2015] [Accepted: 04/15/2015] [Indexed: 11/23/2022]
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