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Zhuang H, Zheng F, Zhang H, Wang J, Chen J. Efficacious bioconversion of alginate/cellulose to value-added oligosaccharides by alginate-degrading GH5 endoglucanase from Trichoderma asperellum. Int J Biol Macromol 2024; 270:131968. [PMID: 38704059 DOI: 10.1016/j.ijbiomac.2024.131968] [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: 01/17/2024] [Revised: 04/26/2024] [Accepted: 04/27/2024] [Indexed: 05/06/2024]
Abstract
Enzymatic degradation of lignocellulosic biomass provides an eco-friendly approach to produce value-added macromolecules, e.g., bioactive polysaccharides. A novel acidophilic GH5 β-1,4-endoglucanase (termed TaCel5) from Trichoderma asperellum ND-1 was efficiently expressed in Komagataella phaffii (∼1.5-fold increase, 38.42 U/mL). TaCel5 displayed both endoglucanase (486.3 U/mg) and alginate lyase (359.5 U/mg) enzyme activities. It had optimal pH 3.0 and strong pH stability (exceed 86 % activity retained over pH range 3.0-5.0). 80 % activity (both endoglucanase and alginate lyase) was retained in the presence of 15 % ethanol or 3.42 M NaCl. Analysis of action mode revealed that hydrolytic activity of TaCel5 required at least three glucose (cellotriose) residues, yielding mainly cellobiose. Glu241 and Glu352 are essential catalytic residues, while Asp106, Asp277 and Asp317 play auxiliary roles in cellulose degradation. TaCel5 displayed high hydrolysis efficiency for glucan and alginate substrates. ESI-MS analysis indicated that the enzymatic hydrolysates of alginate mainly contained disaccharides and heptasaccharides. This is the first detailed report of a bifunctional GH5 endoglucanase/alginate lyase enzyme from T. asperellum. Thus TaCel5 has strong potential in food and feed industries as a catalyst for bioconversion of cellulose- and alginate-containing waste materials into value-added products oligosaccharides, which was of great benefit both for the economy and environment.
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Affiliation(s)
- Huan Zhuang
- Department of ENT and Head & Neck Surgery, Children's Hospital Zhejiang University School of Medicine, Hangzhou 310051, Zhejiang, China
| | - Fengzhen Zheng
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China.
| | - Hengbin Zhang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China
| | - Jiaqiang Wang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China
| | - Jun Chen
- Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou 310021, China
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2
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Zheng F, Basit A, Wang J, Zhuang H, Chen J, Zhang J. Characterization of a novel acidophilic, ethanol tolerant and halophilic GH12 β-1,4-endoglucanase from Trichoderma asperellum ND-1 and its synergistic hydrolysis of lignocellulosic biomass. Int J Biol Macromol 2024; 254:127650. [PMID: 38287580 DOI: 10.1016/j.ijbiomac.2023.127650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 10/10/2023] [Accepted: 10/23/2023] [Indexed: 01/31/2024]
Abstract
A novel acidophilic GH5 β-1,4-endoglucanase (TaCel12) from Trichoderma asperellum ND-1 was efficiently expressed in Pichia pastoris (a 1.5-fold increase). Deglycosylated TaCel12 migrated as a single band (26.5 kDa) in SDS-PAGE. TaCel12 was acidophilic with a pH optimum of 4.0 and displayed great pH stability (>80 % activity over pH 3.0-5.0). TaCel12 exhibited considerable activity towards sodium carboxymethyl cellulose and sodium alginate with Vmax values of 197.97 μmol/min/mg and 119.06 μmol/min/mg, respectively. Moreover, TaCel12 maintained >80 % activity in the presence of 20 % ethanol and 4.28 M NaCl. Additionally, Mn2+, Pb2+ and Cu2+ negatively affected TaCel12 activity, while the presence of 5 mM Co2+ significantly increased the enzyme activity. Analysis of action mode revealed that TaCel12 required at least four glucose (cellotetraose) residues for hydrolysis to yield cellobiose and cellotriose. Site-directed mutagenesis results suggested that Glu133 and Glu217 of TaCel12 are crucial catalytic residues, with Asp116 displaying an auxiliary function. Production of soluble sugars from lignocellulose is a crucial step in bioethanol development, and it is noteworthy that TaCel12 could synergistically yield fermentable sugars from corn stover and bagasse, respectively. Thus TaCel12 with excellent properties will be considered a potential biocatalyst for applications in various industries, especially for lignocellulosic biomass conversion.
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Affiliation(s)
- Fengzhen Zheng
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China.
| | - Abdul Basit
- Department of Microbiology, University of Jhang, Jhang 35200, Pakistan
| | - Jiaqiang Wang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China
| | - Huan Zhuang
- Department of ENT and Head & Neck Surgery, The Children's Hospital Zhejiang University School of Medicine, Zhejiang, Hangzhou 310051, China
| | - Jun Chen
- Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou 310021, China
| | - Jianfen Zhang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China
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Mohapatra BR. Fermentation medium optimization, molecular modelling and docking analysis of the alginate lyase of a novel Pseudomonas sp. LB56 isolated from seaweed waste. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2071635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Bidyut Ranjan Mohapatra
- Department of Biological and Chemical Sciences, Faculty of Science and Technology, The University of the West Indies, Cave Hill Campus,, Bridgetown, Barbados
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4
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Zhao C, Xie P, Jin J, Jin Q, Wang X. Kinetics, Thermodynamics and Mechanism of Enzymatic Degradation of Zearalenone in Degummed Corn Oil. Toxins (Basel) 2022; 15:19. [PMID: 36668839 PMCID: PMC9867155 DOI: 10.3390/toxins15010019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 12/31/2022] Open
Abstract
The kinetics and thermodynamics of the enzymatic degradation of zearalenone (ZEN) in degummed corn oil were investigated by analyzing the impacts of temperature, pH, ZEN hydrolase dosage and ZEN concentration on the initial reaction rate. The kinetic study found that the maximum reaction rate was 0.97 μmol × kg−1 min−1, the Michaelis constant (Km) was 11,476 μmol × kg−1 and the Michaelis equation was V = 0.97[S]/(11,476 + [S]). The thermodynamic study showed that the activation energy (Ea) was 70.37 kJ·mol−1, the activation enthalpy change of the reaction (ΔH) > 0, the free energy of activation (ΔG) > 0 and the activation entropy change (ΔS) < 0, indicating the reaction could not be spontaneous. The reaction mechanism of ZEN was studied by a hybrid quadrupole orbitrap mass spectrometer. It was found that ZEN first generated the intermediate G/L/D/W-ZEN+H2O, followed by generating the intermediate W-ZEN-H2O under the action of a degrading enzyme. Then, the lactone bond was opened to produce C18H24O6, and finally the decarboxylation product C17H24O4 formed automatically.
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Affiliation(s)
| | | | | | - Qingzhe Jin
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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5
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Ma X, Gao M, Li Y, Wang Q, Sun X. Production of cellulase by Aspergillus niger through fermentation of spent mushroom substance: Glucose inhibition and elimination approaches. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Preparation and characterization of sugilite glass from basalt for α -amylase immobilization, statistical optimization of the immobilization process and description of free and immobilized enzyme. Heliyon 2022; 8:e09960. [PMID: 35874060 PMCID: PMC9305367 DOI: 10.1016/j.heliyon.2022.e09960] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/31/2022] [Accepted: 07/12/2022] [Indexed: 11/23/2022] Open
Abstract
Bacterial α-amylase was immobilized on sugilite from modified basalt rock as a new carrier. A set of glass compositions based on sugilite formula KNa2M2Li3Si12O30 (M = Al or Mn or Fe) were prepared. The glasses were prepared through melting–quenching technique and samples of glass were converted to glass ceramic. Among the tested glasses and glass ceramic only sugilite glass based on M = Fe (BSF) give promising results. The sugilite BSF glass was characterized using DSC analysis, FTIR absorption, and SEM. The sugilite glass revealed high thermal resistant till ∼770 °C. Under optimized conditions of the Central composite design, the immobilization yield improved by 4.7-fold. The affinity to starch increased after enzyme immobilization by 4.3-fold. The lower rate of deactivation constant and the increase of t½ and D-value confirm the suitability of BSF and immobilization method in enhancing enzyme stability. The improvement in thermostability of immobilized α-amylase was judged by the change in thermodynamic parameters. In conclusion, the prepared sugilite BSF glass can be utilized as a new carrier suitable for stabilization of α-amylase enzyme by immobilization. Lemon peels induced α-amylase production by isolated Rhizobium sp. strain A1. Using basalt as raw material for sugilite glass synthesis as new immobilization carriers. Sugilite BSF glass the suitable carrier was characterized by DSC, FTIR and SEM. Central composite design increased immobilization yield by 4.7–fold. Thermal and thermodynamic properties emphasize increased stability upon immobilization.
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Kinetic model supported improved and optimized submerged production strategy of cellulase enzyme from newspaper waste biomass. Bioprocess Biosyst Eng 2022; 45:1281-1295. [PMID: 35750867 DOI: 10.1007/s00449-022-02741-9] [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: 03/05/2022] [Accepted: 06/03/2022] [Indexed: 11/02/2022]
Abstract
A systematic evaluation of microorganism's potential towards biosynthesis of cellulases from inexpensive lignocellulosic feedstock through appropriate kinetic modelling facilitates understanding, optimization and designing of an effective industrial cellulase enzyme production process. The present study aims to optimize a submerged fungal cultivation strategy for cellulase production from abundantly available newspaper wastes (NPW). A combined pretreatment strategy consisting diluted, 1% (v v-1) H2SO4 followed by 2% (w v-1) NaOH treatment was highly effective to convert newspaper waste to an effective cellulose-enriched inducer for the production of cellulase. In addition, the composition of the most influential nutrient components like peptone and lactose was optimized with the help of response surface methodology for enhanced cellulase production with maximum activity levels. Maximum cellulase production of 8.64 g L-1 with 7.82 FPU mL-1 total activity levels was achieved from optimized composition of pretreated NPW 3.29% (w v-1), lactose 2.94% (w v-1) and peptone 1.53% (w v-1). To analyse intrinsic inhibition effect of the substrate concentration on cellulase production, modified Luedeking-Piret model simulated experiments were further conducted with 1.5% (w/v), 3.29% (w/v) and 4% (w/v) NPW concentrations. The developed kinetic model perfectly captured the trends of biomass production, substrate consumption and adsorption characteristic of cellulase enzyme on its activity during production. The rate constant for cellulase synthesis was evaluated to be increased to 0.040 IU g-1 h -1 at 3.29% (w v-1) of NPW concentration; however, it was further reduced to 0.024 IU g-1 h -1 at higher NPW concentration of 4% (w v-1).
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Kaur H, Kaur A, Soni SK, Rishi P. Microbially-derived cocktail of carbohydrases as an anti-biofouling agents: a 'green approach'. BIOFOULING 2022; 38:455-481. [PMID: 35673761 DOI: 10.1080/08927014.2022.2085566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 05/12/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Enzymes, also known as biocatalysts, display vital properties like high substrate specificity, an eco-friendly nature, low energy inputs, and cost-effectiveness. Among their numerous known applications, enzymes that can target biofilms or their components are increasingly being investigated for their anti-biofouling action, particularly in healthcare, food manufacturing units and environmental applications. Enzymes can target biofilms at different levels like during the attachment of microorganisms, formation of exopolymeric substances (EPS), and their disruption thereafter. In this regard, a consortium of carbohydrases that can target heterogeneous polysaccharides present in the EPS matrix may provide an effective alternative to conventional chemical anti-biofouling methods. Further, for complete annihilation of biofilms, enzymes can be used alone or in conjunction with other antimicrobial agents. Enzymes hold the promise to replace the conventional methods with greener, more economical, and more efficient alternatives. The present article explores the potential and future perspectives of using carbohydrases as effective anti-biofilm agents.
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Affiliation(s)
- Harmanpreet Kaur
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Arashdeep Kaur
- Department of Microbiology, Panjab University, Chandigarh, India
| | | | - Praveen Rishi
- Department of Microbiology, Panjab University, Chandigarh, India
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Bäumgen M, Dutschei T, Bornscheuer UT. Marine Polysaccharides: Occurrence, Enzymatic Degradation and Utilization. Chembiochem 2021; 22:2247-2256. [PMID: 33890358 PMCID: PMC8360166 DOI: 10.1002/cbic.202100078] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/21/2021] [Indexed: 12/13/2022]
Abstract
Macroalgae species are fast growing and their polysaccharides are already used as food ingredient due to their properties as hydrocolloids or they have potential high value bioactivity. The degradation of these valuable polysaccharides to access the sugar components has remained mostly unexplored so far. One reason is the high structural complexity of algal polysaccharides, but also the need for suitable enzyme cocktails to obtain oligo- and monosaccharides. Among them, there are several rare sugars with high value. Recently, considerable progress was made in the discovery of highly specific carbohydrate-active enzymes able to decompose complex marine carbohydrates such as carrageenan, laminarin, agar, porphyran and ulvan. This minireview summarizes these achievements and highlights potential applications of the now accessible abundant renewable resource of marine polysaccharides.
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Affiliation(s)
- Marcus Bäumgen
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
| | - Theresa Dutschei
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
| | - Uwe T. Bornscheuer
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
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Muley AB, Awasthi S, Bhalerao PP, Jadhav NL, Singhal RS. Preparation of cross-linked enzyme aggregates of lipase from Aspergillus niger: process optimization, characterization, stability, and application for epoxidation of lemongrass oil. Bioprocess Biosyst Eng 2021; 44:1383-1404. [PMID: 33660099 DOI: 10.1007/s00449-021-02509-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 01/04/2021] [Indexed: 12/01/2022]
Abstract
Cross-linked enzyme aggregates (CLEAs) of lipase were prepared after fractional precipitation with 40-50% ammonium sulfate and then cross-linking with glutaraldehyde. The process variables for the preparation of lipase-CLEAs such as glutaraldehyde concentration, cross-linking period, and initial pH of medium were optimized. The optimized conditions for the preparation of lipase-CLEAs were 25 mM/80 min/pH 7.0, and 31.62 mM/90 min/pH 6.0 with one factor at a time approach and numerical optimization with central composite design, respectively. Lipase-CLEAs were characterized by particle size analysis, SEM, and FTIR. Cross-linking not only shifted the optimal pH and temperature from 7.0 to 7.5 and 40-45 to 45-50 °C, but also altered the secondary structure. Lipase-CLEAs showed an increase in Km by 7.70%, and a decrease in Vmax by 16.63%. Lipase-CLEAs presented better thermostability than free lipase as evident from thermal inactivation constants (t1/2, D and Ed value), and thermodynamic parameters (Ed, ΔH°, ΔG°, and ΔS°) in the range of 50-70 °C. Lipase-CLEAs retained more than 65% activity up to four cycles and showed good storage stability for 12 days when stored at 4 ± 2 °C. They were successfully utilized for the epoxidation of lemongrass oil which was confirmed by changes in iodine value, epoxide value, and FTIR spectra.
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Affiliation(s)
- Abhijeet Bhimrao Muley
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, 400019, India.
| | - Sneha Awasthi
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Prasanna Prakash Bhalerao
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Nilesh Lakshaman Jadhav
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Rekha Satishchandra Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
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11
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Ladole MR, Pokale PB, Patil SS, Belokar PG, Pandit AB. Laccase immobilized peroxidase mimicking magnetic metal organic frameworks for industrial dye degradation. BIORESOURCE TECHNOLOGY 2020; 317:124035. [PMID: 32871333 DOI: 10.1016/j.biortech.2020.124035] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/12/2020] [Accepted: 08/15/2020] [Indexed: 05/05/2023]
Abstract
In the present work, laccase was successfully immobilized in peroxidase mimicking magnetic metal organic frameworks (MMOFs) within 30 min using a facile approach. The integration of magnetic nanoparticles during synthesis significantly eases the separation of prepared biocatalyst using an external magnet. The immobilization of laccase was confirmed using different characterization techniques. The laccase@MMOFs found spherical in nature with an average particle size below 100 nm. The synthesized laccase embedded framework exhibits supermagnetic property with the saturation magnetization (Ms) of 34.12 emu/gm. The prepared bio-metallic frameworks maintain high surface area and thermal stability. The laccase@MMOFs was successfully exploited for the degradation of industrial dyes in batch and continuous mode with an average degradation efficiency of 95%. The prepared laccase structure had an excellent recyclability retaining upto 89% residual activity upto 10th cycle and can be stored at room temperature upto 30 days without any significant loss of activity.
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Affiliation(s)
- Mayur Ramrao Ladole
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - Pravin Babanrao Pokale
- Department of E & TC, Priyadarshini J.L. Chaturvedi College of Engineering & Technology, Nagpur, India
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12
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Dharani SR, Srinivasan R, Sarath R, Ramya M. Recent progress on engineering microbial alginate lyases towards their versatile role in biotechnological applications. Folia Microbiol (Praha) 2020; 65:937-954. [DOI: 10.1007/s12223-020-00802-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/16/2020] [Indexed: 11/30/2022]
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13
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Ahmed SA, Abdella MA, El-Sherbiny GM, Ibrahim AM, El-Shamy AR, Atalla SM, Hassan ME. Catalytic, kinetic and thermal properties of free andimmobilized Bacillus subtilis -MK1 α-amylase on Chitosan-magnetic nanoparticles. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 26:e00443. [PMID: 32154128 PMCID: PMC7056624 DOI: 10.1016/j.btre.2020.e00443] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/31/2019] [Accepted: 02/26/2020] [Indexed: 12/14/2022]
Abstract
Bacillus subtilis strain-MK1 α-amylase was successfully immobilized on Chitosan-magnetic nanoparticles (Ch-MNP) that had been modified with polyethyleneimine (PEI) and glutaraldehyde (GA). Optimization of Ch-MNP/PEI/GA beads modification by Central Composite design enhanced the immobilization yield (IY %) by 1.5-fold. Ch-MNP/PEI/GA was characterized before and after modification and immobilization by FTIR and SEM. Ch-MNP/PEI/GA/Enzyme showed the same pH optima of free enzyme, while an elevation 10 °C in temperature optima was observed after its immobilization. Ch-MNP/PEI/GA/Enzyme displayed higher Km and Vmax values (2.1 and 1.2-fold) and lower Vmax/Km ratio (1.7-fold), respectively than the free enzyme. Compared to the free enzyme, Ch-MNP/PEI/GA/Enzyme exhibited lower activation energy, lower deactivation constant rate, higher D-values, higher half-life, and higher energy for denaturation. Immobilization of α-amylase increased enthalpy (4.2-fold), free energy (1.1-fold) and decreased entropy (4.6-fold) of thermal inactivation. A significant increase in pH stability of Ch-MNP/PEI/GA/Enzyme was observed especially at alkaline pH values. In addition, Ch-MNP/PEI/GA/Enzyme preserved 83.2 % of its initial activity after 15 consecutive cycles. When storing Ch-MNP/PEI/GA/Enzyme at 4 °C the residual activity was 100 and 86 %, respectively after 21 and 40 days. Finally, immobilization process improved the catalytic properties and stabilities, thus raising the suitability for industrial processes with lower cost and time.
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Affiliation(s)
- Samia A. Ahmed
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt
| | - Mohamed A.A. Abdella
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt
| | - Gamal M. El-Sherbiny
- Department of Botany and Microbiology, Faculty of Science (Boys), Al-Azhar University, Cairo, Egypt
| | - Atef M. Ibrahim
- Microbial Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), University of Sadat City, Menoufia, Egypt
| | - Aliaa R. El-Shamy
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt
| | - Sherien M.M. Atalla
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt
| | - Mohamed E. Hassan
- Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt
- Centre of Excellence, Encapsulation Nanobiotechnology Group, National Research Centre, Dokki, Cairo, Egypt
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Mohapatra BR. Biocatalytic characteristics of chitosan nanoparticle-immobilized alginate lyase extracted from a novel Arthrobacter species AD-10. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2019.101458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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15
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Mostafa FA, Saleh SA, Ahmed SA, Helmy WA. Statistical optimization and biochemical characterization of bioactive Bacillus megaterium 314 caseinase produced on egg shell and molokihya stalks. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Muley AB, Chaudhari SA, Bankar SB, Singhal RS. Stabilization of cutinase by covalent attachment on magnetic nanoparticles and improvement of its catalytic activity by ultrasonication. ULTRASONICS SONOCHEMISTRY 2019; 55:174-185. [PMID: 30852153 DOI: 10.1016/j.ultsonch.2019.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
This paper reports on stabilization of serine cutinase activity by immobilizing it through cross linking with glutaraldehyde on magnetic nanoparticles (Fe-NPs) and intensification of catalytic activity by ultrasonic treatment. The optimum parameters were cross linking with 10.52 mM glutaraldehyde for 90 min using 1:2 (w/w) ratio of enzyme:Fe-NPs. The characterization of cutinase-Fe-NPs was done by different instrumental analysis. Ultrasonic power showed a beneficial effect on the activity of free and immobilized cutinase at 5.76 and 7.63 W, respectively, after 12 min. Immobilization and ultrasonic treatment led to increments in kinetic parameters (Km and Vmax) along with noticeable changes in the secondary structural fractions of cutinase. Cutinase-Fe-NPs showed augmented pH (4-8) and thermal stability (40-60 °C). Considerably higher thermal inactivation kinetic constants (kd, t1/2 and D-value) and thermodynamic constants (Ed, ΔH°, ΔG° and ΔS°) highlighted superior thermostability of cutinase-Fe-NPs. Cutinase-Fe-NPs and ultrasound treated cutinase-Fe-NPs retained 61.88% and 38.76% activity during 21-day storage, and 82.82 and 80.69% activity after fifth reusability cycle, respectively.
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Affiliation(s)
- Abhijeet B Muley
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Sandeep A Chaudhari
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India; Department of Bioprocess and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Helsinki, Finland
| | - Sandip B Bankar
- Department of Bioprocess and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Helsinki, Finland
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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17
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Exploring Marine Environments for the Identification of Extremophiles and Their Enzymes for Sustainable and Green Bioprocesses. SUSTAINABILITY 2018. [DOI: 10.3390/su11010149] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sea environments harbor a wide variety of life forms that have adapted to live in hard and sometimes extreme conditions. Among the marine living organisms, extremophiles represent a group of microorganisms that attract increasing interest in relation to their ability to produce an array of molecules that enable them to thrive in almost every marine environment. Extremophiles can be found in virtually every extreme environment on Earth, since they can tolerate very harsh environmental conditions in terms of temperature, pH, pressure, radiation, etc. Marine extremophiles are the focus of growing interest in relation to their ability to produce biotechnologically useful enzymes, the so-called extremozymes. Thanks to their resistance to temperature, pH, salt, and pollutants, marine extremozymes are promising biocatalysts for new and sustainable industrial processes, thus representing an opportunity for several biotechnological applications. Since the marine microbioma, i.e., the complex of microorganisms living in sea environments, is still largely unexplored finding new species is a central issue for green biotechnology. Here we described the main marine environments where extremophiles can be found, some existing or potential biotechnological applications of marine extremozymes for biofuels production and bioremediation, and some possible approaches for the search of new biotechnologically useful species from marine environments.
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Yang M, Yu Y, Yang S, Shi X, Mou H, Li L. Expression and Characterization of a New PolyG-Specific Alginate Lyase From Marine Bacterium Microbulbifer sp. Q7. Front Microbiol 2018; 9:2894. [PMID: 30555439 PMCID: PMC6281962 DOI: 10.3389/fmicb.2018.02894] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/12/2018] [Indexed: 01/12/2023] Open
Abstract
Alginate lyases play an important role in preparation of alginate oligosaccharides. Although a large number of alginate lyases have been characterized, reports on directional preparation of alginate oligosaccharides by alginate lyases are still rather less. Here, a gene alyM encoding a new alginate lyase AlyM was cloned from Microbulbifer sp. Q7 and expressed in Escherichia coli. AlyM exhibited the maximumactivity at pH 7.0 and 55°C and showed special preference to poly-guluronic acid (polyG). Glycine promoted the extracellular secretion of AlyM by 3.6 times. PBS and glycerol significantly improved the thermal stability of AlyM, the enzyme activity remained 75 and 78% after heat-treatment at 45°C for 2 h, respectively. ESI-MS analysis suggested that AlyM mainly produced oligosaccharides with degrees of polymerization (DP) of 2-5. The results of 1H-NMR showed that guluronic acid (G) occupied the reducing end of the end products, indicating that AlyM preferred to degrade the glycosidic bond at the G-X linkage. HPLC analysis showed that the hydrolysis products with a lower degree of polymerization contained more G. Therefore, AlyM shows good potential to produce alginate oligosaccharides with specific M/G ratio and molecular weights.
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Affiliation(s)
- Min Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Yuan Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Suxiao Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xiaohui Shi
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Li Li
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
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Conjugation of Agrobacterium radiobacter epoxide hydrolase with ficoll: Catalytic, kinetic and thermodynamic analysis. Int J Biol Macromol 2018; 119:1098-1105. [DOI: 10.1016/j.ijbiomac.2018.08.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 08/04/2018] [Accepted: 08/07/2018] [Indexed: 01/11/2023]
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20
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A tri-enzyme co-immobilized magnetic complex: Process details, kinetics, thermodynamics and applications. Int J Biol Macromol 2018; 118:1781-1795. [DOI: 10.1016/j.ijbiomac.2018.07.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/14/2018] [Accepted: 07/07/2018] [Indexed: 01/09/2023]
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21
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Nahar S, Mizan MFR, Ha AJW, Ha SD. Advances and Future Prospects of Enzyme-Based Biofilm Prevention Approaches in the Food Industry. Compr Rev Food Sci Food Saf 2018; 17:1484-1502. [DOI: 10.1111/1541-4337.12382] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/22/2018] [Accepted: 06/27/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Shamsun Nahar
- Dept. of Food Science and Technology; Chung-Ang Univ.; Anseong Gyeonggi-Do 456-756 Republic of Korea
| | | | - Angela Jie-won Ha
- Dept. of Food Science and Technology; Chung-Ang Univ.; Anseong Gyeonggi-Do 456-756 Republic of Korea
| | - Sang-Do Ha
- Dept. of Food Science and Technology; Chung-Ang Univ.; Anseong Gyeonggi-Do 456-756 Republic of Korea
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22
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Zhu B, Ning L, Jiang Y, Ge L. Biochemical Characterization and Degradation Pattern of a Novel Endo-Type Bifunctional Alginate Lyase AlyA from Marine Bacterium Isoptericola halotolerans. Mar Drugs 2018; 16:E258. [PMID: 30065151 PMCID: PMC6117692 DOI: 10.3390/md16080258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/21/2018] [Accepted: 07/27/2018] [Indexed: 01/13/2023] Open
Abstract
Alginate lyases are important tools to prepare oligosaccharides with various physiological activities by degrading alginate. Particularly, the bifunctional alginate lyase can efficiently hydrolyze the polysaccharide into oligosaccharides. Herein, we cloned and identified a novel bifunctional alginate lyase, AlyA, with a high activity and broad substrate specificity from bacterium Isoptericola halotolerans NJ-05 for oligosaccharides preparation. For further applications in industry, the enzyme has been characterized and its action mode has been also elucidated. It exhibited the highest activity (7984.82 U/mg) at pH 7.5 and 55 °C. Additionally, it possessed a broad substrate specificity, showing high activities towards not only polyM (polyβ-d-mannuronate) (7658.63 U/mg), but also polyG (poly α-l-guluronate) (8643.29 U/mg). Furthermore, the Km value of AlyA towards polyG (3.2 mM) was lower than that towards sodium alginate (5.6 mM) and polyM (6.7 mM). TLC (Thin Layer Chromatography) and ESI-MS (Electrospray Ionization Mass Spectrometry) were used to study the action mode of the enzyme, showing that it can hydrolyze the substrates in an endolytic manner to release a series of oligosaccharides such as disaccharide, trisaccharide, and tetrasaccharide. This study provided extended insights into the substrate recognition and degrading pattern of the alginate lyases, with a broad substrate specificity.
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Affiliation(s)
- Benwei Zhu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, Jiangsu, China.
| | - Limin Ning
- College of Medicine and Life Science, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China.
| | - Yucui Jiang
- College of Medicine and Life Science, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China.
| | - Lin Ge
- Technology Transfer Center, Nanjing Forest University, Nanjing 210037, Jiangsu, China.
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Trincone A. Update on Marine Carbohydrate Hydrolyzing Enzymes: Biotechnological Applications. Molecules 2018; 23:E901. [PMID: 29652849 PMCID: PMC6017418 DOI: 10.3390/molecules23040901] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 12/20/2022] Open
Abstract
After generating much interest in the past as an aid in solving structural problems for complex molecules such as polysaccharides, carbohydrate-hydrolyzing enzymes of marine origin still appear as interesting biocatalysts for a range of useful applications in strong interdisciplinary fields such as green chemistry and similar domains. The multifaceted fields in which these enzymes are of interest and the scarce number of original articles in literature prompted us to provide the specialized analysis here reported. General considerations from modern (2016-2017 interval time) review articles are at start of this manuscript; then it is subsequently organized in sections according to particular biopolymers and original research articles are discussed. Literature sources like the Science Direct database with an optimized W/in search, and the Espacenet patent database were used.
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Affiliation(s)
- Antonio Trincone
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei, 34, 80078 Pozzuoli, Naples, Italy.
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Mohapatra BR. An Insight into the Prevalence and Enzymatic Abatement of Urethane in Fermented Beverages. Microb Biotechnol 2018. [DOI: 10.1007/978-981-10-7140-9_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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25
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Muley AB, Chaudhari SA, Mulchandani KH, Singhal RS. Extraction and characterization of chitosan from prawn shell waste and its conjugation with cutinase for enhanced thermo-stability. Int J Biol Macromol 2018; 111:1047-1058. [PMID: 29366886 DOI: 10.1016/j.ijbiomac.2018.01.115] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 01/01/2018] [Accepted: 01/17/2018] [Indexed: 10/18/2022]
Abstract
The present article describes extraction of chitosan from prawn shells waste and its application in thermal stabilization of Fusarium sp. ICT SAC1 cutinase by non-covalent and covalent conjugation. Extracted chitosan represented 78.40% degree of deacetylation (DDA), a molecular weight of 173 kDa and was soluble in 1% acetic acid with 2.8 ± 0.15% insoluble matter. The structural (FTIR, NMR and XRD) and thermal characterization (DSC and TGA) indicated unique properties for chitosan. Plausible chitosan structure was also deduced. The water and fat binding capacities were 923% and 598.05% while 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) and 1,1-diphenyl-2-picrylhydrzyl radicals scavenging activity was 60.62 and 11.83 μM Trolox-Equivalent/ml. The Km and Vmax values of free cutinase were 0.82 mM and 20.64 mM/min which increased by 14.63 and 17.07%; and 27.18 and 43.94% after non-covalent and covalent conjugation, respectively. A marginal increment in thermal inactivation constants and energy (kd, t1/2, D and Ed value) were also noticed for cutinase-chitosan conjugates. The enthalpy, free energy and entropy values increased marginally in covalent conjugate vis-à-vis non-covalent conjugated and free cutinase. A reduction in α-helix, random coils and β-sheets content was noted after conjugation.
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Affiliation(s)
- Abhijeet B Muley
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Sandeep A Chaudhari
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Ketan H Mulchandani
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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Muley AB, Chaudhari SA, Singhal RS. Non-covalent conjugation of cutinase from Fusarium sp. ICT SAC1 with pectin for enhanced stability: Process minutiae, kinetics, thermodynamics and structural study. Int J Biol Macromol 2017; 102:729-740. [DOI: 10.1016/j.ijbiomac.2017.04.072] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/17/2017] [Accepted: 04/20/2017] [Indexed: 12/15/2022]
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