1
|
Yu F, Zhang M, Sun J, Wang F, Li X, Liu Y, Wang Z, Zhao X, Li J, Chen J, Du G, Xue Z. Improved Neomycin Sulfate Potency in Streptomyces fradiae Using Atmospheric and Room Temperature Plasma (ARTP) Mutagenesis and Fermentation Medium Optimization. Microorganisms 2022; 10:microorganisms10010094. [PMID: 35056543 PMCID: PMC8780280 DOI: 10.3390/microorganisms10010094] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 12/04/2022] Open
Abstract
To improve the screening efficiency of high-yield neomycin sulfate (NM) Streptomyces fradiae strains after mutagenesis, a high-throughput screening method using streptomycin resistance prescreening (8 μg/mL) and a 24-deep well plates/microplate reader (trypan blue spectrophotometry) rescreening strategy was developed. Using this approach, we identified a high-producing NM mutant strain, Sf6-2, via six rounds of atmospheric and room temperature plasma (ARTP) mutagenesis and screening. The mutant displayed a NM potency of 7780 ± 110 U/mL and remarkably stable genetic properties over six generations. Furthermore, the key components (soluble starch, peptone, and (NH4)2SO4) affecting NM potency in fermentation medium were selected using Plackett-Burman and optimized by Box-Behnken designs. Finally, the NM potency of Sf6-2 was increased to 10,849 ± 141 U/mL at the optimal concentration of each factor (73.98 g/L, 9.23 g/L, and 5.99 g/L, respectively), and it exhibited about a 40% and 100% enhancement when compared with before optimization conditions and the wild-type strain, respectively. In this study, we provide a new S. fradiae NM production strategy and generate valuable insights for the breeding and screening of other microorganisms.
Collapse
Affiliation(s)
- Fei Yu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Min Zhang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Junfeng Sun
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Fang Wang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Xiangfei Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
| | - Yan Liu
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Zhou Wang
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
| | - Xinrui Zhao
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jianghua Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Jian Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; (F.Y.); (X.L.); (X.Z.); (J.L.); (J.C.)
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
- Correspondence: (G.D.); (Z.X.)
| | - Zhenglian Xue
- Microorganism Fermentation Engineering and Technology Research Center of Anhui Province, College of Biologic & Food Engineering, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China; (M.Z.); (J.S.); (F.W.); (Y.L.); (Z.W.)
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, 8 Middle Beijing Road, Wuhu 241000, China
- Correspondence: (G.D.); (Z.X.)
| |
Collapse
|
2
|
Kesebir AÖ, Kılıç D, Şişecioğlu M, Adıgüzel A, Küfrevioğlu Öİ. Recombinant laccase production from Bacillus licheniformis O12: Characterization and its application for dye decolorization. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00847-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
A novel thermophilic laccase-like multicopper oxidase from Thermothelomyces thermophila and its application in the oxidative cyclization of 2′,3,4-trihydroxychalcone. N Biotechnol 2019; 49:10-18. [DOI: 10.1016/j.nbt.2018.12.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 12/02/2018] [Accepted: 12/04/2018] [Indexed: 01/03/2023]
|
4
|
Patil U, Mokashe N, Shaha J, Arthekar S, Jagatap H. Ultrasound-assisted improvements in biocatalytic activity and production of organic-solvent stable protease from Bacillus circulans MTCC 7942. ULTRASONICS SONOCHEMISTRY 2018; 40:201-205. [PMID: 28946415 DOI: 10.1016/j.ultsonch.2017.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/06/2017] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
This study reports the ultrasound-assisted improvements in biocatalytic activity and production of protease from organic solvent-tolerant, alkaliphilic Bacillus circulans MTCC 7942. The strain withstands 10min ultrasound treatment (33kHz); this treatment promotes the growth of bacterium. The protease production was improved by 1.5-fold on multiple ultrasound treatment at 0, 6, 12h intervals. Although the substrate casein remains unaffected by ultrasound treatment (33kHz, 10min); the treatment had boosted the enzyme activity of purified protease. Also, the ultrasound treated purified protease showed enhancement in enzyme activity in presence of n-dodecane, n-octane, n-hexadecane, n-decane, xylene, butanol, toluene, pyridine and chloroform.
Collapse
Affiliation(s)
- Ulhas Patil
- Department of Microbiology, R. C. Patel Arts, Commerce and Science College, Shirpur 425 405, India.
| | - Narendra Mokashe
- Department of Microbiology, R. C. Patel Arts, Commerce and Science College, Shirpur 425 405, India
| | - Jasmita Shaha
- Department of Microbiology, R. C. Patel Arts, Commerce and Science College, Shirpur 425 405, India
| | - Sarika Arthekar
- Department of Microbiology, R. C. Patel Arts, Commerce and Science College, Shirpur 425 405, India
| | - Harshada Jagatap
- Department of Microbiology, R. C. Patel Arts, Commerce and Science College, Shirpur 425 405, India
| |
Collapse
|
5
|
Yang J, Li W, Ng TB, Deng X, Lin J, Ye X. Laccases: Production, Expression Regulation, and Applications in Pharmaceutical Biodegradation. Front Microbiol 2017; 8:832. [PMID: 28559880 PMCID: PMC5432550 DOI: 10.3389/fmicb.2017.00832] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/24/2017] [Indexed: 01/08/2023] Open
Abstract
Laccases are a family of copper-containing oxidases with important applications in bioremediation and other various industrial and biotechnological areas. There have been over two dozen reviews on laccases since 2010 covering various aspects of this group of versatile enzymes, from their occurrence, biochemical properties, and expression to immobilization and applications. This review is not intended to be all-encompassing; instead, we highlighted some of the latest developments in basic and applied laccase research with an emphasis on laccase-mediated bioremediation of pharmaceuticals, especially antibiotics. Pharmaceuticals are a broad class of emerging organic contaminants that are recalcitrant and prevalent. The recent surge in the relevant literature justifies a short review on the topic. Since low laccase yields in natural and genetically modified hosts constitute a bottleneck to industrial-scale applications, we also accentuated a genus of laccase-producing white-rot fungi, Cerrena, and included a discussion with regards to regulation of laccase expression.
Collapse
Affiliation(s)
- Jie Yang
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Wenjuan Li
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Tzi Bun Ng
- Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong KongShatin, Hong Kong
| | - Xiangzhen Deng
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Juan Lin
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Xiuyun Ye
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| |
Collapse
|
6
|
Afreen S, Shamsi TN, Baig MA, Ahmad N, Fatima S, Qureshi MI, Hassan MI, Fatma T. A novel multicopper oxidase (laccase) from cyanobacteria: Purification, characterization with potential in the decolorization of anthraquinonic dye. PLoS One 2017; 12:e0175144. [PMID: 28384218 PMCID: PMC5383238 DOI: 10.1371/journal.pone.0175144] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/21/2017] [Indexed: 01/01/2023] Open
Abstract
A novel extracellular laccase enzyme produced from Spirulina platensis CFTRI was purified by ultrafiltration, cold acetone precipitation, anion exchange and size exclusion chromatography with 51.5% recovery and 5.8 purification fold. The purified laccase was a monomeric protein with molecular mass of ~66 kDa that was confirmed by zymogram analysis and peptide mass fingerprinting. The optimum pH and temperature of the enzyme activity was found at 3.0 and 30°C using ABTS as substrate but the enzyme was quite stable at high temperature and alkaline pH. The laccase activity was enhanced by Cu+2, Zn+2 and Mn+2. In addition, the dye decolorization potential of purified laccase was much higher in terms of extent as well as time. The purified laccase decolorized (96%) of anthraquinonic dye Reactive blue- 4 within 4 h and its biodegradation studies was monitored by UV visible spectra, FTIR and HPLC which concluded that cyanobacterial laccase can be efficiently used to decolorize synthetic dye and help in waste water treatment.
Collapse
Affiliation(s)
- Sumbul Afreen
- Cyanobacterial Biotechnology laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Tooba Naz Shamsi
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Mohd Affan Baig
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Nadeem Ahmad
- Cyanobacterial Biotechnology laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Sadaf Fatima
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - M. Irfan Qureshi
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Md. Imtaiyaz Hassan
- Center for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Tasneem Fatma
- Cyanobacterial Biotechnology laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
- * E-mail:
| |
Collapse
|
7
|
Fu J, Chen T, Lu H, Lin Y, Xie X, Tian H, Zheng C, He D. Enhancement of docosahexaenoic acid production by low-energy ion implantation coupled with screening method based on Sudan black B staining in Schizochytrium sp. BIORESOURCE TECHNOLOGY 2016; 221:405-411. [PMID: 27660991 DOI: 10.1016/j.biortech.2016.09.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/10/2016] [Accepted: 09/12/2016] [Indexed: 05/22/2023]
Abstract
Schizochytrium sp. is a hopeful docosahexaenoic acid (DHA) producing candidate due to its rapid growth rate and high DHA proportion in total lipid content. In this study, low-energy ion implantation was applied to Schizochytrium sp. to induce high DHA-producing mutants. Screening these mutants by Sudan black B staining, a mutant strain S1 which showed a 61% improvement in DHA production than that of the parent strain was successfully selected. Subsequently, parameters of DHA production of mutant strain S1 were optimized in a 500-mL Erlenmeyer flask. Under the optimum fermentation conditions, the production of DHA and the percentage of DHA in total lipid of mutant strain S1 were 6.52g/L and 46.2%, respectively. This study provides an effective breeding strategy for improved DHA production of Schizochytrium sp. through combination of the novel mutagenesis technology, the effective screening method and fermentation optimization.
Collapse
Affiliation(s)
- Jie Fu
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Tao Chen
- Wuhan Institute of Virology, Chinese Academy of Sciences, 44 Xiaohongshan, Wuhan, Hubei 430071, PR China
| | - Hao Lu
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Yuanfeng Lin
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Xinlei Xie
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Hua Tian
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Cao Zheng
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China.
| | - Dongping He
- College of Food Science and Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan, Hubei 430023, PR China
| |
Collapse
|
8
|
Hu J, Wang F, Ma A, Zhuang G, Liu Y, Lu J, Guo C, Liu C. Farnesol stimulates laccase production in
Trametes versicolor. Eng Life Sci 2016. [DOI: 10.1002/elsc.201500082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Jianhua Hu
- National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Feng Wang
- National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing P. R. China
| | - Anzhou Ma
- Research Center for Eco‐Environmental Sciences Chinese Academy of Sciences Beijing P. R. China
| | - Guoqiang Zhuang
- Research Center for Eco‐Environmental Sciences Chinese Academy of Sciences Beijing P. R. China
| | - Ying Liu
- National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing P. R. China
- Jiangsu Jiangu Chemical Co. Ltd Suqian Jiangsu Province P. R. China
| | - Jingsong Lu
- Jiangsu Jiangu Chemical Co. Ltd Suqian Jiangsu Province P. R. China
| | - Chen Guo
- National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing P. R. China
| | - Chunzhao Liu
- National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing P. R. China
- Jiangsu Jiangu Chemical Co. Ltd Suqian Jiangsu Province P. R. China
| |
Collapse
|
9
|
Du W, Sun C, Liang J, Han Y, Yu J, Liang Z. Improvement of Laccase Production and its Characterization by Mutagenesis. J Food Biochem 2015. [DOI: 10.1111/jfbc.12111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. Du
- School of Basic Medical Science; Guiyang College of Traditional Chinese Medicine; Guiyang 550002 China
| | - C. Sun
- Center of Biochemical Engineering in Guizhou Province; China
| | - J. Liang
- School of Basic Medical Science; Guiyang College of Traditional Chinese Medicine; Guiyang 550002 China
| | - Y. Han
- Institutes of Fungus Resources; Guizhou University; Guiyang 550025 China
| | - J. Yu
- Biochemistry and Nutrition; Guizhou University; Guiyang 550025 China
| | - Z. Liang
- Institutes of Fungus Resources; Guizhou University; Guiyang 550025 China
| |
Collapse
|
10
|
Li Q, Wang X, Korzhev M, Schröder HC, Link T, Tahir MN, Diehl-Seifert B, Müller WE. Potential biological role of laccase from the sponge Suberites domuncula as an antibacterial defense component. Biochim Biophys Acta Gen Subj 2015; 1850:118-28. [DOI: 10.1016/j.bbagen.2014.10.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 02/08/2023]
|
11
|
Patel H, Gupte S, Gahlout M, Gupte A. Purification and characterization of an extracellular laccase from solid-state culture of Pleurotus ostreatus HP-1. 3 Biotech 2014; 4:77-84. [PMID: 28324461 PMCID: PMC3909575 DOI: 10.1007/s13205-013-0129-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 03/06/2013] [Indexed: 11/30/2022] Open
Abstract
A native isolate of Pleurotus ostreatus HP-1 (Genbank Accession No. EU420068) was found to have an excellent laccase producing ability. The extracellular laccase was purified to electrophoretic homogeneity from copper sulphate induced solid-state fermentation medium by ammonium sulphate precipitation and ion-exchange chromatography. The enzyme was determined to be monomeric protein with an apparent molecular mass of 68,420 kDa, and an isoelectric point (pI) of 3.5. The inductively coupled plasma spectroscopy showed a presence of iron, zinc and copper in the purified enzyme. The absorption spectrum in the range of 200-700 nm showed the maximum absorption at 610 nm characteristic of fungal laccase and corresponding to the presence of type I copper atom. The laccase was stable at different temperatures up to 70 °C and retained 61 % activity at 50 °C. The enzyme reaction was inhibited by cysteine; sodium azide and EDTA. The enzyme oxidized various known laccase substrates, its lowest Km value being for ortho-dianisidine and highest Kcat and Kcat/Km for ABTS. The purified laccase exhibited different pH optima for different substrates. The N-terminal sequence did not show any similarity with N-terminal sequence of other species of genera Pleurotus.
Collapse
Affiliation(s)
- Hardik Patel
- Department of Microbiology, N. V. Patel College of Pure and Applied Sciences, Vallabh Vidyanagar, 388 120, Gujarat, India
| | - Shilpa Gupte
- Department of Microbiology, N. V. Patel College of Pure and Applied Sciences, Vallabh Vidyanagar, 388 120, Gujarat, India
| | - Mayur Gahlout
- Department of Microbiology, N. V. Patel College of Pure and Applied Sciences, Vallabh Vidyanagar, 388 120, Gujarat, India
| | - Akshaya Gupte
- Department of Microbiology, N. V. Patel College of Pure and Applied Sciences, Vallabh Vidyanagar, 388 120, Gujarat, India.
| |
Collapse
|
12
|
Wang F, Guo C, Liu CZ. Immobilization of Trametes versicolor cultures for improving laccase production in bubble column reactor intensified by sonication. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s10295-012-1214-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
The mycelia of Trametes versicolor immobilized in alginate beads provided higher laccase production than that in pelleted form. An efficient ultrasonic treatment enhanced laccase production from the immobilized T. versicolor cultures. The optimized treatment process consisted of exposing 36-h-old bead cultures to 7-min ultrasonic treatments twice with a 12-h interval using a fixed ultrasonic power and frequency (120 W, 40 kHz). Using the intensification strategy with sonication, laccase production increased by more than 2.1-fold greater than the untreated control in both flasks and bubble column reactors. The enhancement of laccase production by ultrasonic treatment is related to the improved mass transfer of nutrients and product between the liquid medium and the gel matrix. These results provide a basis for the large-scale and highly-efficient production of laccase using sonobioreactors.
Collapse
Affiliation(s)
- Feng Wang
- grid.458442.b 0000000091944824 National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing People’s Republic of China
| | - Chen Guo
- grid.458442.b 0000000091944824 National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing People’s Republic of China
| | - Chun-Zhao Liu
- grid.458442.b 0000000091944824 National Key Laboratory of Biochemical Engineering Institute of Process Engineering, Chinese Academy of Sciences 100190 Beijing People’s Republic of China
| |
Collapse
|
13
|
Wang F, Ma AZ, Guo C, Zhuang GQ, Liu CZ. Ultrasound-intensified laccase production from Trametes versicolor. ULTRASONICS SONOCHEMISTRY 2013; 20:118-124. [PMID: 22682477 DOI: 10.1016/j.ultsonch.2012.05.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 05/07/2012] [Accepted: 05/10/2012] [Indexed: 06/01/2023]
Abstract
An efficient intermittent ultrasonic treatment strategy was developed to improve laccase production from Trametes versicolor mycelia cultures. The optimized strategy consisted of exposing 2-day-old mycelia cultures to 5-min ultrasonic treatments for two times with a 12-h interval at the fixed ultrasonic power and frequency (120 W, 40 kHz). After 5 days of culture, this strategy produced the highest extracellular laccase activity of 588.9 U/L among all treatments tested which was 1.8-fold greater than the control without ultrasound treatment. The ultrasonic treatment resulted in a higher pellet porosity that facilitated the mass transfer of nutrients and metabolites from the pellets to the surrounding liquid. Furthermore, the ultrasonic treatment induced the expression of the laccase gene (lcc), which correlated with a sharp increase in both extracellular and intracellular laccase activity. This is the first study to find positive effects of ultrasound on gene expression in fungal cells. These results provide a basis for understanding the stimulation of metabolite production and process intensification by ultrasonic treatment in filamentous fungal culture.
Collapse
Affiliation(s)
- Feng Wang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | | | | | | | | |
Collapse
|
14
|
Wang F, Guo C, Wei T, Zhang T, Liu CZ. Heat shock treatment improves Trametes versicolor laccase production. Appl Biochem Biotechnol 2012; 168:256-65. [PMID: 22733235 DOI: 10.1007/s12010-012-9769-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 06/04/2012] [Indexed: 10/28/2022]
Abstract
An efficient heat shock strategy has been developed to improve laccase production in submerged Trametes versicolor cultures. The optimized heat shock strategy consists of subjecting T. versicolor mycelial pellets to three heat shock treatments at 45 °C for 45 min, starting at culture day 0, with a 24-h interval between treatments. Laccase production increased by more than 1.6-fold relative to the control in both flasks and a 5-L bioreactor because the expression of the laccase gene was enhanced by heat shock induction. The present work demonstrates that heat shock induction is a promising method because it both improves fungal laccase production and has a good potential in industrial application.
Collapse
Affiliation(s)
- Feng Wang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | | | | | | | | |
Collapse
|
15
|
Zhao D, Zhang X, Cui D, Zhao M. Characterisation of a novel white laccase from the deuteromycete fungus Myrothecium verrucaria NF-05 and its decolourisation of dyes. PLoS One 2012; 7:e38817. [PMID: 22715414 PMCID: PMC3371050 DOI: 10.1371/journal.pone.0038817] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 05/11/2012] [Indexed: 11/19/2022] Open
Abstract
A novel ‘white’ laccase was purified from the deuteromycete fungus, Myrothecium verrucaria NF-05, which was a high laccase-producing strain (40.2 U·ml−1 on the thirteenth day during fermentation). SDS-PAGE and native-PAGE revealed a single band with laccase activity corresponding to a molecular weight of approximately 66 kDa. The enzyme had three copper and one iron atoms per protein molecule determined by ICP-AES. Furthermore, both UV/visible and EPR spectroscopy remained silence, indicating the enzyme a novel laccase with new metal compositions of active centre and spectral properties. The N-terminal amino acid sequence of the purified protein was APQISPQYPM. Together with MALDI-TOF analysis, the protein revealed a high homology of the protein with that from reported M. verrucaria. The highest activity was detected at pH 4.0 and at 30°C. The enzyme activity was significantly enhanced by Na+, Mn2+, Cu2+ and Zn2+ while inhibited by DTT, NaN3 and halogen anions. The kinetic constant (Km) showed the enzyme was more affinitive to ABTS than other tested aromatic substrates. Twelve structurally different dyes could be effectively decolourised by the laccase within 10 min. The high production of the strain and novel properties of the laccase suggested its potential for biotechnological applications.
Collapse
Affiliation(s)
- Dan Zhao
- Department of Microbiology, Life Science College, Northeast Forestry University, Harbin, China
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - Xi Zhang
- Department of Microbiology, Life Science College, Northeast Forestry University, Harbin, China
| | - Daizong Cui
- Department of Microbiology, Life Science College, Northeast Forestry University, Harbin, China
| | - Min Zhao
- Department of Microbiology, Life Science College, Northeast Forestry University, Harbin, China
- * E-mail:
| |
Collapse
|
16
|
Karagoz B, Bayramoglu G, Altintas B, Bicak N, Arica MY. Amine functional monodisperse microbeads via precipitation polymerization of N-vinyl formamide: immobilized laccase for benzidine based dyes degradation. BIORESOURCE TECHNOLOGY 2011; 102:6783-6790. [PMID: 21531131 DOI: 10.1016/j.biortech.2011.03.050] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Revised: 03/10/2011] [Accepted: 03/16/2011] [Indexed: 05/30/2023]
Abstract
Densely cross-linked poly(vinylamine) microbeads (∼ 2 μm) were prepared by precipitation copolymerization of N-vinyl formamide and ethylene glycoldimethacrylate in acetonitrile. The formamido groups of the microbeads were hydrolyzed into amino groups. Then, amino-functionalized microbeads were used for covalent immobilization of laccase via glutaraldehyde coupling. The average amount of immobilized enzyme was 18.7 mg/g microbeads. Kinetic parameters, V(max) and K(m) values were determined as 20.7 U/mg protein and 2.76 × 10(-2)mmol/L for free enzyme and 15.8 U/mg protein and 4.65 mmol/L for the immobilized laccase, respectively. The immobilized laccase was operated in a batch reactor for the degradation of two different benzidine based dyes (i.e., Direct Blue 1 and Direct Red 128). The laccase immobilized on the microbeads was very effective for removal of these dyes which interfere with the hormonal system.
Collapse
Affiliation(s)
- Bunyamin Karagoz
- Istanbul Technical University, Department of Chemistry, Maslak 34469, Istanbul, Turkey
| | | | | | | | | |
Collapse
|