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Saad MM, Saad AM, Hassan HM, Ibrahim EI, Hassabo AA, Ali BA. Bioremoval of tannins and heavy metals using immobilized tannase and biomass of Aspergillus glaucus. Microb Cell Fact 2024; 23:209. [PMID: 39054459 PMCID: PMC11271194 DOI: 10.1186/s12934-024-02477-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 07/08/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND The presence of inorganic pollutants and heavy metals in industrial effluents has become a serious threat and environmental issues. Fungi have a remarkable ability to exclude heavy metals from wastewater through biosorption in eco-friendly way. Tannase plays an important role in bioconversion of tannin, a major constituent of tannery effluent, to gallic acid which has great pharmaceutical applications. Therefore, the aim of the current study was to exploit the potential of tannase from Aspergillus glaucus and fungal biomass waste for the bioremediation of heavy metals and tannin. RESULTS Tannase from A. glaucus was partially purified 4.8-fold by ammonium sulfate precipitation (80%). The enzyme was optimally active at pH 5.0 and 40 °C and stable at this temperature for 1 h. Tannase showed high stability at different physiological conditions, displayed about 50% of its activity at 60 °C and pH range 5.0-6.0. Immobilization of tannase was carried out using methods such. as entrapment in Na-alginate and covalent binding to chitosan. The effects of Na-alginate concentrations on the beads formation and enzyme immobilization revealed that maximum immobilization efficiency (75%) was obtained with 3% Na-alginate. A potential reusability of the immobilized enzyme was showed through keeping 70% of its relative activity up to the fourth cycle. The best bioconversion efficiency of tannic acid to gallic acid by immobilized tannase was at 40 °C with tannic acid concentration up to 50 g/l. Moreover, bioremediation of heavy metal (Cr3+, Pb2+, Cu2+, Fe3+, and Mn2+) from aqueous solution using A. glaucus biomass waste was achieved with uptake percentage of (37.20, 60.30, 55.27, 79.03 and 21.13 respectively). The biomass was successfully used repeatedly for removing Cr3+ after using desorbing agent (0.1 N HCl) for three cycles. CONCLUSION These results shed the light on the potential use of tannase from locally isolated A. glaucus in the bioremediation of industrial tanneries contained heavy metals and tannin.
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Affiliation(s)
- Moataza Mahmoud Saad
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt
| | - Abdelnaby Mahmoud Saad
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt
| | - Helmy Mohamed Hassan
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt
| | - Eman I Ibrahim
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt
| | - Amany A Hassabo
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt
| | - Basant A Ali
- Microbial Chemistry Department, National Research Centre (NRC), 33 EL-Bohouth St., Dokki 12622, Giza, Egypt.
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Chaitanyakumar A, Somu P, Srinivasan R. Expression and Immobilization of Tannase for Tannery Effluent Treatment from Lactobacillus plantarum and Staphylococcus lugdunensis: A Comparative Study. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04861-2. [PMID: 38421571 DOI: 10.1007/s12010-024-04861-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2024] [Indexed: 03/02/2024]
Abstract
Agro-industrial discharges have higher concentrations of tannins and have been a significant cause of pollution to water bodies and soil surrounding the agro-industries. So in this study, toxic tannic acid is into commercially valuable gallic acid from the tannery effluent using immobilized microbial tannase. Tannase genes were isolated from Lactobacillus plantarum JCM 1149 (tanLpl) and Staphylococcus lugdunensis MTCC 3614 (tanA). Further, these isolated tannese genes were cloned and expressed in BL 21 host using pET 28a as an expression vector, and immobilized in sodium alginate beads. Vegetable tannery effluent was treated by tannase-immobilized beads at 25 °C and 37 °C, where liberated gallic acid was analyzed using TLC and NMR to confirm the tannin reduction. Further, both immobilized tannases exhibited excellent reusability up to 15 cycles of regeneration without significant reduction in their activity. Moreover, we also showed that immobilized tannases tanLpl and tanA activity remained unaffected compared to the free enzyme in the presence of metal ions. Further, tanA activity remained unaffected over a wide range of pH, and tanLpl showed high thermal stability. Thus, immobilized tannase tanLpl and tanA provide a possible solution for tannery effluent treatment depending upon industry requirements and reaction composition/effluent composition, one can choose a better-immobilized tannase among the two as per the need-based requirement.
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Affiliation(s)
- Amballa Chaitanyakumar
- Department of Biotechnology, University Institute of Engineering and Technology, Guru Nanak University, Ibrahimpatnam, 501510, Telangana, India.
- Department of Biotechnology, School of Bio-Sciences and Technology, Vellore Institute of Technology, 632 014, Tamil Nadu, Vellore, India.
| | - Prathap Somu
- Department of Biotechnology and Chemical Engineering, School of Civil and Chemical Engineering, Manipal University Jaipur, Dehmi Kalan, Jaipur, 303007, India.
| | - Ramachandran Srinivasan
- Centre for Ocean Research, Sathyabama Research Park, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India
- Department of Biotechnology, School of Bio-Sciences and Technology, Vellore Institute of Technology, 632 014, Tamil Nadu, Vellore, India
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Saad MM, Saad AM, Hassan HM, Ibrahim EI, Abdelraof M, Ali BA. Optimization of tannase production by Aspergillus glaucus in solid-state fermentation of black tea waste. BIORESOUR BIOPROCESS 2023; 10:73. [PMID: 38647901 PMCID: PMC10991964 DOI: 10.1186/s40643-023-00686-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/08/2023] [Indexed: 04/25/2024] Open
Abstract
Tannases are valuable industrial enzymes used in food, pharmaceutical, cosmetic, leather manufacture and in environmental biotechnology. In this study, 15 fungal isolates were obtained from Egyptian cultivated soil and marine samples. The isolated fungi were qualitatively and quantitatively screened for their abilities to produce tannase. The selected fungal isolate NRC8 giving highest tannase activity was identified by molecular technique (18S rRNA) as Aspergillus glaucus. Among different tannin-containing wastes tested, the black tea waste was the best substrate for tannase production by Aspergillus glaucus in solid-state fermentation (SSF). Optimization of the different process parameters required for maximum enzyme production was carried out to design a suitable SSF process. Maximal tannase production was achieved with moisture content of 75%, an inoculums size of 6 × 108 spore/ml and sodium nitrate 0.2% (pH of 5.0) at 30 °C after 5 days of incubation. Box-Behnken experiment was designed to get a quadratic model for further optimization studies. Four-factor response-surface method with 27 runs was prepared using independent parameters including (moisture content %, initial pH, substrate concentration (g) and sodium nitrate concentration (g) for tannase model. The F- and P-values of the model were 4.30 and 0.002, respectively, which implied that the model is significant. In addition, the lack-of-fit was 1040.37 which indicates the same significance relative to the pure error. A. glaucus tannase was evaluated by the efficiency of conversion of tannic acid to gallic acid. Moreover, production of gallic acid from SSF process of A. glaucus using black tea waste was found to be 38.27 mg/ml. The best bioconversion efficiency was achieved at 40 °C with tannic acid concentration up to 200 g/L.
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Affiliation(s)
- Moataza Mahmoud Saad
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt
| | - Abdelnaby Mahmoud Saad
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt
| | - Helmy Mohamed Hassan
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt
| | - Eman I Ibrahim
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt.
| | - Mohamed Abdelraof
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt.
| | - Basant A Ali
- Microbial Chemistry Department, National Research Centre (NRC), 33 Bohouth St, Dokki, 12622, Giza, Egypt
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Ahmed AI, Abou-Taleb KAA, Abd-Elhalim BT. Characterization and application of tannase and gallic acid produced by co-fungi of Aspergillus niger and Trichoderma viride utilizing agro-residues substrates. Sci Rep 2023; 13:16755. [PMID: 37798429 PMCID: PMC10556068 DOI: 10.1038/s41598-023-43955-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/30/2023] [Indexed: 10/07/2023] Open
Abstract
Bioconversion using fungi, as natural factory of many applicable bioactive compounds, as enzymes utilizing agro-residue substrates as a solid, abundant, low-cost growth and enzyme production media. This study characterized and applied a tannase enzyme (308 U/mg) from Aspergillus niger A8 + Trichoderma viride co-cultures utilizing pomegranate peels. The partially purified enzyme showed maximal relative activity at 37-65 °C for 10 min and kinetics of thermal inactivation energy at a high point at 60 °C for 0.040/min. The half-life was 37 °C for 58.6 min, temperature coefficient Q10 of tannase was maximal for 1.38 between 40 and 50 °C, and the activation energy was 17.42 kJ/mol. The enzyme activity peaked in the pH range of 4-8, and the maximum relative activity (100.6%) for tannase was achieved at pH 6. The Km and Vmax values for purified enzymes using tannic acid were 7.3 mg/mL and 3333.33 U/mL, respectively. The enzyme reduced the total tannin content in all tannin-rich substrates after 12h. The gallic acid (GA) had total phenols of 77.75 ppm and antioxidant activity of 82.91%. It was observed that the GA as antimicrobial influencer exhibited the largest inhibitory zone diameter (IZD) of 31 ± 1.0 mm against Pseudomonas aeruginosa ATCC27853. The GA minimum inhibitory concentration value was ranged from 7770.0-121.41 µg/mL. The obtained GA showed a bactericidal effect against all bacterial strains except Shigella sonnei DSM5570 and Salmonella typhi DSM17058, which showed bacteriostatic behavior.
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Affiliation(s)
- Alshaymaa I Ahmed
- Department of Agricultural Microbiology, Faculty of Agriculture, Beni-Suef University, Beni-Suef, Egypt
| | - Khadiga A A Abou-Taleb
- Agricultural Microbiology Department, Faculty of Agriculture, Ain Shams University, Hadayek Shubra, Cairo, 11241, Egypt
| | - Basma T Abd-Elhalim
- Agricultural Microbiology Department, Faculty of Agriculture, Ain Shams University, Hadayek Shubra, Cairo, 11241, Egypt.
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Jin YY, Ritthibut N, Lim ST, Oh SJ. Antioxidant and in vitro cosmeceutical activities of chestnut inner shell fermented by Monascus kaoliang. Food Sci Biotechnol 2023; 32:813-822. [PMID: 37041812 PMCID: PMC10082885 DOI: 10.1007/s10068-022-01225-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/31/2022] [Accepted: 12/08/2022] [Indexed: 12/29/2022] Open
Abstract
Chestnut inner shell (CIS) was fermented at 30 °C for 12 day using Monascus kaoliang, either in solid or submerged state, and alcohol extracts (70% ethanol) of the fermented CIS were examined for their antioxidant (total phenol content and diphenylpicrylhydrazyl radical scavenging activity) and in vitro cosmeceutical activities (tyrosinase and elastase inhibitory activities). Both activities were significantly increased by the M. kaoliang-fermentation, more apparently by submerged fermentation (SMF) than by solid-state fermentation (SSF). The cosmeceutical activity reached its maximum value on the 3rd day of fermentation. The residual amounts of phenolic acids and catechins in the CIS extracts were increased by the fermentation, up to 395.0 and 344.3 µg/g, respectively. More phenolic acids were produced by SMF than SSF, whereas more catechins were produced by SSF than SMF. Therefore, SMF using M. kaoliang was an efficient process for the utilization of CIS as a source of cosmeceuticals.
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Affiliation(s)
- Ying-yu Jin
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841 South Korea
- Institute of Biomedical Science & Food Safety, Korea University, Seoul, 02841 South Korea
| | - Nuntinee Ritthibut
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841 South Korea
- Institute of Biomedical Science & Food Safety, Korea University, Seoul, 02841 South Korea
| | - Seung-Taik Lim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841 South Korea
- Institute of Biomedical Science & Food Safety, Korea University, Seoul, 02841 South Korea
| | - Su-Jin Oh
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841 South Korea
- Institute of Biomedical Science & Food Safety, Korea University, Seoul, 02841 South Korea
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Sharma N, Vuppu S. Computational Modelling and Molecular Docking of Industrial Leather Enzymes. Mol Biotechnol 2023:10.1007/s12033-023-00689-z. [PMID: 36807269 DOI: 10.1007/s12033-023-00689-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/31/2023] [Indexed: 02/23/2023]
Abstract
Leather is one of the widely traded commodities globally. It is a strategically important sector for the economic and industrial development of the country. However, the leather industry is perceived as a highly polluting industry. It produces huge amounts of solid and liquid wastes, and if these wastes are not properly treated and disposed of, then it tends to deteriorate the quality of soil and water, as well as cause emanations of smell and noxious gases into the surrounding. The current paper provides information about industrial leather enzymes, primarily collagenase, tannase, and lecithinase. In this study, enzymes such as collagenase, tannase, and lecithinase had a pivotal role in leather industries and their action in the bioremediation of leather effluents was further analysed and docked with a diverse range of compounds (ligands), with an optimal binding affinity score was determined. All interactions between protein ligands were depicted, which will help us with future research. Furthermore, this method can be tested practically, and other parameters can be studied in the future. Further, applications of enzymes and their hydrolyse by-products have also been highlighted in a variety of industries, including the pharmaceutical, cosmetic, agricultural, medical, and food sectors. Subsequently, this finding provides an innovative and broader goal for various sectors in terms of sustainability, stabilisation, and identifying research gaps that can guide modern industries and research scientists.
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Affiliation(s)
- Nikita Sharma
- School of Bioscience and Technology, Department of Biotechnology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - Suneetha Vuppu
- School of Bioscience and Technology, Department of Biotechnology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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Nishikawa A, Senba H, Kimura Y, Yokota S, Doi M, Takenaka S. Isolation and characterization of a salt-tolerant γ-glutamyl transpeptidase from xerophilic Aspergillus sydowii. 3 Biotech 2022; 12:253. [PMID: 36060894 PMCID: PMC9433638 DOI: 10.1007/s13205-022-03259-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/08/2022] [Indexed: 11/01/2022] Open
Abstract
Xerophilic Aspergillus molds isolated from halo-alkaliphilic and dry environments are attractive genetic resources for obtaining salt- and osmo-adaptive enzymes. A. sydowii MA0196 secreted the largest amount of γ-glutamyl transpeptidase (GGT) during solid-state fermentation at a low initial water activity (a w = 0.85). Gel filtration analysis revealed that the molecular mass of the purified native enzyme (MA0196 GGT) was 120 kDa. SDS-PAGE analysis showed that MA0196 GGT consists of two subunits with molecular masses of 56.4 and 33 kDa, indicating production from a proenzyme via autoproteolysis. Deglycosylation of the subunits by N-glycosidase F yielded 40.9 and 19.6 kDa species. MA0196 GGT retained transpeptidase and hydrolysis activities and their catalytic efficiency (k cat/K m) under high salt and low water activity. The enzyme displayed broad substrate specificity toward γ-glutamyl acceptors such as amino acids and the imidazole dipeptides, carnosine and anserine. Carnosine and L-glutamine were converted into γ-glutamyl-β-alanyl-L-histidine by MA0196 GGT with a 32.9% yield in the presence of 2% (v/v) dimethyl sulfoxide. Phylogenetic analysis indicated that MA0196 GGT forms a distinct lineage from A. oryzae and A. sojae GGTs. These excellent properties indicate that MA0196 GGT can be used in salted fermentation and for producing bioactive peptides. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03259-3.
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Affiliation(s)
- Arisa Nishikawa
- Division of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501 Japan
| | - Hironori Senba
- Division of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501 Japan
- Gen Res Lab, Ozeki Corp, 4-9 Imazu, Nishinomiya, Hyogo 663-8227 Japan
| | - Yukihiro Kimura
- Division of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501 Japan
| | - Satoko Yokota
- Marutomo Co., Ltd, 1696 Kominato, Iyo, Ehime 799-3192 Japan
| | - Mikiharu Doi
- Marutomo Co., Ltd, 1696 Kominato, Iyo, Ehime 799-3192 Japan
| | - Shinji Takenaka
- Division of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501 Japan
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Pestalotiopsis mangiferae isolated from cocoa leaves and concomitant tannase and gallic acid production. Fungal Biol 2022; 126:471-479. [DOI: 10.1016/j.funbio.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 11/23/2022]
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Oliveira VM, Andreote FD, Cortelo PC, Castro-Gamboa I, Costa-Lotufo LV, Polizeli MDLTM, Thiemann OH, Setubal JC. Microorganisms: the secret agents of the biosphere, and their key roles in biotechnology. BIOTA NEOTROPICA 2022. [DOI: 10.1590/1676-0611-bn-2022-1343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Abstract We present a survey of projects that have been funded by FAPESP under the BIOTA-Microorganisms program. These projects generated a wide variety of results, including the identification of novel antibacterial-producing microorganisms, the characterization of novel microbial enzymes for industrial applications, taxonomic classification of novel microorganisms in several environments, investigation of the soil and mangrove microbial ecosystems and its influence on endangered plant species, and the sequencing of novel metagenome-assembled genomes. The results surveyed demonstrate the importance of microorganisms in environments that play important roles in human activities as well as the potential that many of these microorganisms have in contributing to biotechnological applications crucial for human survival in the 21st century.
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Cavalcanti RMF, Maestrello CC, Guimarães LHS. Immobilization of the Tannase From Aspergillus fumigatus CAS21: Screening the Best Derivative for the Treatment of Tannery Effluent Using a Packed Bed Reactor. Front Bioeng Biotechnol 2021; 9:754061. [PMID: 34805112 PMCID: PMC8595215 DOI: 10.3389/fbioe.2021.754061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/12/2021] [Indexed: 11/13/2022] Open
Abstract
Enzyme immobilization is an important alternative to stabilize enzyme properties favoring the efficiency of derivatives (enzyme + support/matrix) for different purposes. According to this, the current study aimed to immobilize the Aspergillus fumigatus CAS21 tannase and the use of the derivatives in the treatment of the effluent produced by the tannery industry. The tannase was immobilized on sodium alginate, DEAE-Sephadex, amberlite, and glass pearls as supports. Calcium alginate was the most adequate support for tannase immobilization with 100% yield and 94.3% for both efficiency and activity. The best tannase activity for the calcium alginate derivative was obtained at 50°C–60°C and pH 5.0. Thermal and pH stabilities evaluated for 24 h at 30°C–60°C and pH 4–7, respectively, were improved if compared to the stability of the free enzyme. Considering the reuse of the calcium alginate derivative, 78% of the initial activity was preserved after 10 catalytic cycles, and after the 9-month storage at 4°C, the activity was maintained in 70%. This derivative was applied in a packed bed reactor (PBR) for the treatment of tannin-rich effluents from the tannery industry. The reduction of the tannin content was effective reaching degradation of 74–78% after 48 h of PBR operation. The concentration of total phenolic compounds was also reduced, and the color and clarity of the effluent improved. In conclusion, the calcium alginate derivative is an attractive alternative as biocatalyst for large-scale treatment of the effluents from the tannery industry.
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Lei J, Zhang Y, Ni X, Yu X, Wang X. Degradation of epigallocatechin and epicatechin gallates by a novel tannase Tan Hcw from Herbaspirillum camelliae. Microb Cell Fact 2021; 20:197. [PMID: 34641872 PMCID: PMC8507159 DOI: 10.1186/s12934-021-01685-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 09/24/2021] [Indexed: 11/10/2022] Open
Abstract
Background Herbaspirillum camelliae is a gram-negative endophyte isolated from the tea plant. Both strains WT00C and WT00F were found to hydrolyze epigallocatechin-3-gallate (EGCG) and epicatechin-3-gallate (ECG) to release gallic acid (GA) and display tannase activity. However, no tannase gene was annotated in the genome of H. camelliae WT00C. Results The 39 kDa protein, annotated as the prolyl oligopeptidase in the NCBI database, was finally identified as a novel tannase. Its gene was cloned, and the enzyme was expressed in E. coli and purified to homogeneity. Moreover, enzymatic characterizations of this novel tannase named TanHcw were studied. TanHcw was a secretary enzyme with a Sec/SPI signal peptide of 48 amino acids at the N-terminus, and it catalyzed the degradation of tannin, methyl gallate (MG), epigallocatechin-3-gallate (EGCG) and epicatechin-3-gallate (ECG). The optimal temperature and pH of TanHcw activities were 30 °C, pH 6.0 for MG and 40 °C, pH 7.0 for both EGCG and ECG. Na+, K+ Mn2+ and Triton-X100, Tween80 increased the enzyme activity of TanHcw, whereas Zn2+, Mg2+, Hg2+, EMSO, EDTA and β-mercaptoethanol inhibited enzyme activity. Km, kcat and kcat /Km of TanHcw were 0.30 mM, 37.84 s−1, 130.67 mM−1 s−1 for EGCG, 0.33 mM, 34.59 s−1, 105.01 mM−1 s−1 for ECG and 0.82 mM, 14.64 s−1, 18.17 mM−1 s−1 for MG, respectively. Conclusion A novel tannase TanHcw from H. camelliae has been identified and characterized. The biological properties of TanHcw suggest that it plays a crucial role in the specific colonization of H. camelliae in tea plants. Discovery of the tannase TanHcw in this study gives us a reasonable explanation for the host specificity of H. camelliae. In addition, studying the characteristics of this enzyme offers the possibility of further defining its potential in industrial application. Supplementary Information The online version contains supplementary material available at 10.1186/s12934-021-01685-1.
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Affiliation(s)
- Jia Lei
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Yong Zhang
- Xianning Central Hospital, Tongji Xianning Hospital, Xianning, Hubei Province, China
| | - Xuechen Ni
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Xuejing Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, 430062, China.
| | - Xingguo Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan, 430062, China.
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Cavalcanti RMF, Martinez MLL, Oliveira WP, Guimarães LHS. Stabilization and application of spray-dried tannase from Aspergillus fumigatus CAS21 in the presence of different carriers. 3 Biotech 2020; 10:177. [PMID: 32226706 PMCID: PMC7096345 DOI: 10.1007/s13205-020-2164-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 03/07/2020] [Indexed: 01/21/2023] Open
Abstract
The Aspergillus fumigatus CAS21 tannase was spray dried with β-cyclodextrin, Capsul® starch, soybean meal, lactose, and maltodextrin as adjuvants. The moisture content and water activity of the products ranged from 5.6 to 11.5% and from 0.249 to 0.448, respectively. The maximal tannase activity was achieved at 40-60 ºC and pH 5.0-6.0 for the powders containing β-cyclodextrin and Capsul® starch, which was stable at 40 ºC and 40-60 ºC for 120 min, respectively. For all the dried products, tannase retained its activity of over 80% for 120 min at pH 5.0 and 6.0. Salts and solvents influenced the activity of the spray-dried tannase. The activity of the spray-dried tannase was maintained when preserved for 1 year at 4 ºC and 28 ºC. Spray-dried tannase reduced the content of tannins and polyphenolic compounds of leather effluent and sorghum flour and catalyzed the transesterification reaction. The spray drying process stabilized the tannase activity, highlighting the potential of dried products for biotechnological applications.
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Affiliation(s)
| | - Marcelo Luís Lombardi Martinez
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, USP, Av. do Café s/n, Ribeirão Preto, SP 14040-903 Brazil
| | - Wanderley Pereira Oliveira
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, USP, Av. do Café s/n, Ribeirão Preto, SP 14040-903 Brazil
| | - Luís Henrique Souza Guimarães
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto – USP, Avenida Bandeirantes 3900, Monte Alegre, Ribeirão Preto, SP 14040-901 Brazil
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Marine Fungi: Biotechnological Perspectives from Deep-Hypersaline Anoxic Basins. DIVERSITY 2019. [DOI: 10.3390/d11070113] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Deep-sea hypersaline anoxic basins (DHABs) are one of the most hostile environments on Earth. Even though DHABs have hypersaline conditions, anoxia and high hydrostatic pressure, they host incredible microbial biodiversity. Among eukaryotes inhabiting these systems, recent studies demonstrated that fungi are a quantitatively relevant component. Here, fungi can benefit from the accumulation of large amounts of organic material. Marine fungi are also known to produce bioactive molecules. In particular, halophilic and halotolerant fungi are a reservoir of enzymes and secondary metabolites with valuable applications in industrial, pharmaceutical, and environmental biotechnology. Here we report that among the fungal taxa identified from the Mediterranean and Red Sea DHABs, halotolerant halophilic species belonging to the genera Aspergillus and Penicillium can be used or screened for enzymes and bioactive molecules. Fungi living in DHABs can extend our knowledge about the limits of life, and the discovery of new species and molecules from these environments can have high biotechnological potential.
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