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Sami N, Afzal B, Yasin D, Fatma T. Biochemical Characterization of Laccase from Spirulina CPCC-695 and Their Role in Estrone Degradation. Protein J 2024; 43:115-128. [PMID: 38127183 DOI: 10.1007/s10930-023-10169-7] [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] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The addition of exogenous endocrine disrupting compounds (EDCs) like estrone, in the food chain through the aquatic system, disrupts steroid biosynthesis and metabolism by altering either the genomic or non-genomic pathway that eventually results in various diseases. Thus, bioremediation of these compounds is urgently required to prevent their addition and persistence in the environment. Enzymatic degradation has proven to be a knight in shining armour as it is safe and generates no toxic products. The multicopper oxidases (E.C. 1.10.3.2 benzenediol: oxygen oxidoreductase), laccase with the potential to degrade both phenolic and non-phenolic substrates has recently gained attention. In this study, the laccase was purified, characterized, and used to study estrone degradation. The culture filtrate (crude laccase) was concentrated and precipitated using cold-acetone and dialyzed against tris buffer (50 mM) giving a four-fold partially purified form, with 45.56% yield and 204.14 U/mg as specific activity and a single peak at 250-300 nm. The partially purified laccase was approximately 80 kDa as estimated by SDS-PAGE preferred ABTS as substrate. Both crude and partially purified laccase showed maximum activity at pH 3.0, 40 °C, and 4 mM ABTS. Kinetic constants (Km, Vmax) of crude and partially purified laccase were found to be 0.83 mM; 494.31 mM/min, and 0.58 mM; 480.54 mM/min respectively. Iron sulphate and sodium azide inhibited laccase maximally. Crude and partially purified laccase degradation efficiency was 87.55 and 91.35% respectively. Spirulina CPCC-695 laccase with efficient estrone degradation ability renders them promising candidates for EDCs bioremediation.
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Affiliation(s)
- Neha Sami
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Bushra Afzal
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Durdana Yasin
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Tasneem Fatma
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India.
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2
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Cuebas‐Irizarry MF, Grunden AM. Streptomyces spp. as biocatalyst sources in pulp and paper and textile industries: Biodegradation, bioconversion and valorization of waste. Microb Biotechnol 2024; 17:e14258. [PMID: 37017414 PMCID: PMC10832569 DOI: 10.1111/1751-7915.14258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 04/06/2023] Open
Abstract
Complex polymers represent a challenge for remediating environmental pollution and an opportunity for microbial-catalysed conversion to generate valorized chemicals. Members of the genus Streptomyces are of interest because of their potential use in biotechnological applications. Their versatility makes them excellent sources of biocatalysts for environmentally responsible bioconversion, as they have a broad substrate range and are active over a wide range of pH and temperature. Most Streptomyces studies have focused on the isolation of strains, recombinant work and enzyme characterization for evaluating their potential for biotechnological application. This review discusses reports of Streptomyces-based technologies for use in the textile and pulp-milling industry and describes the challenges and recent advances aimed at achieving better biodegradation methods featuring these microbial catalysts. The principal points to be discussed are (1) Streptomyces' enzymes for use in dye decolorization and lignocellulosic biodegradation, (2) biotechnological processes for textile and pulp and paper waste treatment and (3) challenges and advances for textile and pulp and paper effluent treatment.
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Affiliation(s)
- Mara F. Cuebas‐Irizarry
- Department of Plant and Microbial BiologyNorth Carolina State UniversityPlant Sciences Building Rm 2323, 840 Oval DrRaleighNorth Carolina27606USA
| | - Amy M. Grunden
- Department of Plant and Microbial BiologyNorth Carolina State UniversityPlant Sciences Building Rm 2323, 840 Oval DrRaleighNorth Carolina27606USA
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3
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Wu X, Amanze C, Wang J, Yu Z, Shen L, Wu X, Li J, Yu R, Liu Y, Zeng W. Isolation and characterization of a novel thermotolerant alkali lignin-degrading bacterium Aneurinibacillus sp. LD3 and its application in food waste composting. CHEMOSPHERE 2022; 307:135859. [PMID: 35987270 DOI: 10.1016/j.chemosphere.2022.135859] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/16/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
The aim of this study was to isolate thermotolerant alkali lignin-degrading bacteria and to investigate their degradation characteristics and application in food waste composting. Two thermotolerant alkali lignin-degrading bacteria isolates were identified as Bacillus sp. LD2 (LD2) and a novel species Aneurinibacillus sp. LD3 (LD3). Compared with strain LD2, LD3 had a higher alkali lignin degradation rate (61.28%) and ligninolytic enzyme activities, and the maximum lignin peroxidase, laccase, and manganese peroxidase activities were 3117.25, 1484.5, and 1770.75 U L-1, respectively. GC-MS analysis revealed that low-molecular-weight compounds such as 4'-hydroxy-3'-methoxy acetophenone, vanillic acid, 1-(4-hydroxy-3,5-dimethoxyphenyl), benzoic acid, and octadecanoic acid were formed in the degradation of alkali lignin by LD3, indicating the cleavage of β-aryl ether, Cα-Cβ bonds, and aromatic rings in lignin. Composting results showed that inoculating LD3 improved the degradation of organic matter by 20.11% and reduced the carbon-to-nitrogen (C/N) ratio (15.66). Additionally, a higher decrease in the content of lignocellulose was observed in the LD treatment. FTIR and 3D-EEM spectra analysis indicated that inoculating LD3 promoted the decomposition of easily available organic substances and lignocellulose and the formation of aromatic structures and humic acid-like substances. In brief, the thermotolerant lignin-degrading bacterium Aneurinibacillus sp. LD3 is effective in degrading lignin and improving the quality of composting.
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Affiliation(s)
- Xiaoyan Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Charles Amanze
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Jingshu Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Zhaojing Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
| | - Li Shen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Xueling Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Jiaokun Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Runlan Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Yuandong Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China
| | - Weimin Zeng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biometallurgy, Ministry of Education, Changsha, 410083, China.
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Yang HY, Zhang SB, Meng HH, Zhao Y, Wei ZM, Zheng GR, Wang X. Predicting the humification degree of multiple organic solid waste during composting using a designated bacterial community. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 150:257-266. [PMID: 35870361 DOI: 10.1016/j.wasman.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/29/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Microbes are the drivers for disposing of organic solid waste (OSW) during aerobic fermentation. Notwithstanding, the significance of microbes is underestimated in numerous studies on aerobic fermentation product assessments. Here, we investigated the humification degree (HD), and the humic acid content was assessed in terms of the bacterial community. The bacterial communities were useful indicators for making predictions and even correctly determined the categories of OSWs with 94% accuracy. The bacterial codes can also provide a better prediction of HD. Our results demonstrate that the bacteria code is a reliable biological method to assess HD effectively. Bacterial codes can be used as ecological and biological indicators to evaluate the quality of aerobic fermentation of different materials.
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Affiliation(s)
- Hong-Yu Yang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Shu-Bo Zhang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Han-Han Meng
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Min Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
| | - Guang-Ren Zheng
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xue Wang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
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Purification and biochemical characterization of a new thermostable laccase from Enterococcus faecium A2 by a three-phase partitioning method and investigation of its decolorization potential. Arch Microbiol 2022; 204:533. [PMID: 35906438 DOI: 10.1007/s00203-022-03054-x] [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: 11/24/2021] [Revised: 06/02/2022] [Accepted: 06/03/2022] [Indexed: 11/02/2022]
Abstract
Three-phase partitioning (TPP) is a simple, fast, cost-effective, and highly efficient process that can be used in the purification of laccases. In this study, microorganisms with laccase activity were isolated from water samples collected from the Agri-Diyadin hot spring. The isolate with the highest laccase activity was found to be the A2 strain. As a result of molecular (16S rRNA sequence) and conventional (morphological, biochemical, and physiological) analyses, it was determined that the A2 isolate was 99% similar to Enterococcus faecium (Genbank number: MH424896). The laccase was purified to 4.9-fold with 110% recovery using the TPP. The molecular mass of the enzyme was found by SDS-PAGE to be 50.11 kDa. Optimum pH 6.0 and optimum temperature for laccase were determined as 80 °C. The laccase exhibited pH stability over a wide range (pH 3.0-9.0) and a high thermostability, retaining over 90% of its activity after 1 h of incubation at 20-90 °C. The laccase exhibited high thermostability, with a heat inactivation half-life of approximately 24 h at 80 °C. The enzyme remained highly stable in the presence of surfactants and increased its activity in the presence of organic solvents, Cr2+, Cu2+, and Ag+ metal ions. The Km, Vmax, kcat, and kcat/Km values of laccase for 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) substrate were 0.68 mM, 5.29 μmol mL-1 min-1, 110.2 s-1, and 162.1 s-1 mM-1, respectively.
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6
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Structural Properties, Genomic Distribution of Laccases from Streptomyces and Their Potential Applications. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.015] [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: 11/24/2022]
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7
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Lima NSM, Gomes-Pepe ES, Campanharo JC, de Macedo Lemos EG. Broad thermal spectrum metagenomic laccase with action for dye decolorization and fentin hydroxide treatment. AMB Express 2022; 12:38. [PMID: 35322306 PMCID: PMC8943092 DOI: 10.1186/s13568-022-01375-0] [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: 02/28/2022] [Accepted: 03/13/2022] [Indexed: 11/10/2022] Open
Abstract
Laccases are multicopper oxidases that act on various phenolic and non-phenolic compounds, enabling numerous applications including xenobiotic bioremediation, biofuel production, drug development, and cosmetic production, and they can be used as additives in the textile and food industries. This wide range of uses makes these enzymes extremely attractive for novel biotechnology applications. Here, we undertook the kinetic characterization of LacMeta, a predicted as homotrimeric (~ 107,93 kDa) small laccase, and demonstrated that this enzyme performs best at an acidic pH (pH 3–5) towards ABTS as substrate and has a broad thermal spectrum (10–60 °C), which can promote high plastic action potential through dynamic environmental temperature fluctuations. This enzyme showed following kinetic parameters: kcat = 6.377 s−1 ± 0.303, Km = 4.219 mM, and Vmax = 24.43 µM/min (against ABTS as substrate). LacMeta almost completely degraded malachite green (50 mg/mL) in only 2 h. Moreover, the enzyme was able to degrade seven dyes from four distinct classes and it respectively achieved 85% and 83% decolorization of methylene blue and trypan blue with ABTS as the mediator. In addition, LacMeta showed potential for the degradation of two thirds of an agricultural fungicide: fentin hydroxide, thus demonstrating its biotechnological aptitude for bioremediation. The results of this study suggest that LacMeta has potential in textile wastewater treatment and that it could help in the bioremediation of other human/environmental toxins such as pesticides and antibiotic compounds belonging to the same chemical classes as the degraded dyes. LacMeta is a new two-domain laccase with activity over a wide temperature range LacMeta maintained 50% activity after 5 months of storage at 4 °C. Laccase was able to degrade in 2 h the Malachite Green dye, and had the potential to degrade fentin hydroxide
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9
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Ahsan Z, Kalsoom U, Bhatti HN, Aftab K, Khalid N, Bilal M. Enzyme-assisted bioremediation approach for synthetic dyes and polycyclic aromatic hydrocarbons degradation. J Basic Microbiol 2021; 61:960-981. [PMID: 34608659 DOI: 10.1002/jobm.202100218] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/06/2021] [Accepted: 09/11/2021] [Indexed: 01/25/2023]
Abstract
Environmental protection from emerging pollutants has become a significant challenge for mankind as an increasing number of contaminants, including synthetic dyes and polycyclic aromatic hydrocarbons (PAHs), represent a serious risk to ecological and environmental balance. Most synthetic dyes have complex aromatic structures and are resistant to degrade by classical approaches, such as physical and chemical processes, including adsorption, chemical coagulation, flocculation, ion exchange, membrane separation, froth flotation, and reverse osmosis. Enzymes-assisted catalytic transformation of pollutants has become a potential alternative to classical methods because of their ability to react with complex compounds, a quick degradation rate, and producing less harmful by-products. Plant peroxidases, and microbial laccase and lignin-degrading peroxidases (manganese and lignin peroxidase) have gained significant attention for treating aromatic waste due to their capability of oxidizing and detoxifying a wide range of recalcitrant xenobiotics, including PAHs and synthetic dyes. Peroxidases being efficient biocatalysts detoxify an array of toxic compounds by simple free-radical mechanism resulting in the formation of oxidized and depolymerized products of significantly reduced toxicity. Moreover, it is an ecofriendly and economically favorable approach towards the biodegradation of recalcitrant and toxic industrial waste. Among microbial and plant peroxidases, bacterial enzymes have broad substrate specificity and can transform a wide range of recalcitrant substrates. Ligninolytic enzymes oxidize the aromatic ring into quinones and acids by producing free hydroxyl radicals instead of dihydrodiols and mineralize aromatic hydrocarbon in combination with cytochrome P450, monooxygenases, and epoxide hydrolases. In the review, an attempt has been made to provide detailed knowledge about the availability of inexpensive peroxidases sources, their mechanism of action, and degradation potential. The present review summarizes the exploitation of peroxidases from plants, bacteria, and fungus (manganese peroxidase, lignin peroxidase, and laccases) for detoxification and degradation of textile dyes as well as PAHs. Conclusively, peroxidases have great potential to react with almost all classes of synthetic dyes and most PAHs due to broad substrate specificity and transformed them into less harmful metabolites.
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Affiliation(s)
- Zainab Ahsan
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad, Pakistan
| | - Umme Kalsoom
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad, Pakistan
| | - Haq N Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Kiran Aftab
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Nasira Khalid
- Department of Chemistry, Government College Women University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, China
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Motamedi E, Kavousi K, Sadeghian Motahar SF, Reza Ghaffari M, Sheykh Abdollahzadeh Mamaghani A, Hosseini Salekdeh G, Ariaeenejad S. Efficient removal of various textile dyes from wastewater by novel thermo-halotolerant laccase. BIORESOURCE TECHNOLOGY 2021; 337:125468. [PMID: 34320748 DOI: 10.1016/j.biortech.2021.125468] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/20/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
A novel thermostable/halotolerant metagenome-derived laccase (PersiLac2) from tannery wastewater was purified to remove textile dyes in this study. The enzyme was highly active over a wide temperature and pH range and maintained 73.35% of its initial activity after 30 days, at 50 °C. The effect of various metal and organic-solvent tolerance on PersiLac2 showed, retaining greater than 53% activity at 800 mM of metal ions, 52.12% activity at 6 M NaCl, and greater than 44.09% activity at 20% organic solvents. PersiLac2 manifested effective removal of eight different textile dyes from azo, anthraquinone, and triphenylmethane families. It decolorized 500 mg/L of Alizarin yellow, Carmine, Congo red and Bromothymol blue with 99.74-55.85% efficiency after 15 min, at 50 °C, without mediator. This enzyme could practically remove dyes from a real textile effluent and it displayed significant detoxification in rice seed germination tests. In conclusion, PersiLac2 could be useful in future for decolorization/detoxification of wastewater.
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Affiliation(s)
- Elaheh Motamedi
- Department of Nanotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Kaveh Kavousi
- Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Seyedeh Fatemeh Sadeghian Motahar
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Mohammad Reza Ghaffari
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Atefeh Sheykh Abdollahzadeh Mamaghani
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Ghasem Hosseini Salekdeh
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran; Department of Molecular Sciences, Macquarie University, Sydney 2109, NSW Australia
| | - Shohreh Ariaeenejad
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.
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Zhang S, Xia T, Wang J, Zhao Y, Xie X, Wei Z, Zhang X, Song C, Song X. Role of Bacillus inoculation in rice straw composting and bacterial community stability after inoculation: Unite resistance or individual collapse. BIORESOURCE TECHNOLOGY 2021; 337:125464. [PMID: 34320744 DOI: 10.1016/j.biortech.2021.125464] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Bacillus is the classic inoculant in rice straw composting. However, there has been no in-depth study of the mechanism promoting the degradation of lignocellulose and the change of indigenous bacterial communities after Bacillus inoculation. Moreover, the stability of bacterial communities is a significant challenge in achieving the efficacy of inoculation. In this study, the ecological succession and yield-resource acquisition-stress tolerance (Y-A-S) framework were combined with Redundancy analysis (RDA) and changes in relative abundance, Bacillus was found to be a pioneer bacterium that adopts a resource acquisition-stress tolerance strategy. The structural equation model (SEM) revealed that in addition to exerting a degradation effect, Bacillus inoculation could also indirectly affect lignocellulose degradation by changing the bacterial community. Random forest model and network analysis indicated a change in bacterial communities after inoculation, and bacteria with more complex relationships and weaker decomposition ability were key to the stability of bacterial communities.
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Affiliation(s)
- Shubo Zhang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Tianyi Xia
- Department of Colorectal Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, 150081 Harbin, Heilongjiang Province, China
| | - Jialin Wang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xinyu Xie
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
| | - Xu Zhang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Caihong Song
- Liaocheng Univ, Life Sci Coll, Liaocheng 252059, China
| | - Xinyu Song
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
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Gogotya A, Nnolim NE, Digban TO, Okoh AI, Nwodo UU. Characterization of a thermostable and solvent-tolerant laccase produced by Streptomyces sp. LAO. Biotechnol Lett 2021; 43:1429-1442. [PMID: 33864196 DOI: 10.1007/s10529-021-03131-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Decaying wood samples were collected, and actinomycetes were isolated and screened for laccase production. The identity of the efficient laccase-producing isolate was confirmed by using a molecular approach. Fermentation conditions for laccase production were optimized, and laccase biochemical properties were studied. RESULTS Based on the 16S rRNA gene sequencing and phylogenetic analysis, the isolate coded as HWP3 was identified as Streptomyces sp. LAO. The time-course study showed that the isolate optimally produced laccase at 84 h with 40.58 ± 2.35 U/mL activity. The optimized physicochemical conditions consisted of pH 5.0, ferulic acid (0.04%; v/v), pine back (0.2 g/L), urea (1.0 g/L), and lactose (1 g/L). Streptomyces sp. LAO laccase was optimally active at pH and temperature of 8.0 and 90 °C, respectively, with remarkable pH and thermal stability. Furthermore, the enzyme had a sufficient tolerance for organic solvents after 16 h of preincubation, with laccase activity > 70%. Additionally, the laccase maintained considerable residual activity after pretreatment with 100 mM of chemical agents, including sodium dodecyl sulphate (69.93 ± 0.89%), ethylenediaminetetraacetic acid (93.1 ± 7.85%), NaN3 (96.28 ± 3.34%) and urea (106.03 ± 10.72%). CONCLUSION The laccase's pH and thermal stability; and robust catalytic efficiency in the presence of organic solvents suggest its industrial and biotechnological application potentials for the sustainable development of green chemistry.
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Affiliation(s)
- Asemahle Gogotya
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Nonso E Nnolim
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Tennison O Digban
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Anthony I Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Uchechukwu U Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa. .,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa.
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13
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Li B, Wang Y, Xue L, Lu S. Heterologous Expression and Application of Multicopper Oxidases from Enterococcus spp. for Degradation of Biogenic Amines. Protein Pept Lett 2021; 28:183-194. [PMID: 32543357 DOI: 10.2174/0929866527666200616160859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Biogenic amines are harmful to human health at a certain extent. As a kind of biogenic amine oxidase, multicopper oxidase can be used to degrade them. Currently, the literature about enzyme from Enterococcus spp. are limited, and recombinant multicopper oxidase might be an effective way to degrade biogenic amines. OBJECTIVE (i) Select and identify strains that can degrade biogenic amines, (ii) overexpress enzyme from Enterococcus spp., (iii) measure gene expression and probe amine-degradation differences among strains (native, E. coli DH5α, and L. delbruckii), and (iv) examine the biochemical properties of recombinant multicopper oxidase, (v) apply the recombinant enzyme into smoked horsemeat sausage. METHODS Reverse transcription PCR and high-performance liquid chromatography were performed to examine gene expression and amine degradation rate. RESULTS The results demonstrated that target enzymes were successfully overexpressed, accompanied by increased amine-degrading activity (P <0.05). Gene from E. faecalis M5B was expressed in L. delbrueckii resulted in degradation rates for phenylethylamine, putrescine, histamine and tyramine of 54%, 52%, 70% and 40%, respectively, significantly higher than achieved by other recombinant strains. CONCLUSION In this work, gene expression levels were higher in recombinant M5B than recombinant M2B, regardless of host. E. coli is more stable to express multicopper oxidase. Besides, the amine-degrading ability was markedly increased in the two recombinant strains. After prolonged incubation, the recombinant enzyme could degrade three amines, and it displayed high alkali resistance and thermostability.
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Affiliation(s)
- Binbin Li
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Yuan Wang
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Linlin Xue
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Shiling Lu
- College of Food Science, Shihezi University, Shihezi 832000, China
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Abdelgalil SA, Attia AR, Reyed RM, Soliman NA. Partial purification and biochemical characterization of a new highly acidic NYSO laccase from Alcaligenes faecalis. J Genet Eng Biotechnol 2020; 18:79. [PMID: 33247311 PMCID: PMC7695795 DOI: 10.1186/s43141-020-00088-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/27/2020] [Indexed: 11/18/2022]
Abstract
Background Due to the multitude industrial applications of ligninolytic enzymes, their demands are increasing. Partial purification and intensive characterization of contemporary highly acidic laccase enzyme produced by an Egyptian local isolate designated Alcaligenes faecalis NYSO were studied in the present investigation. Results Alcaligenes faecalis NYSO laccase has been partially purified and intensively biochemically characterized. It was noticed that 40–60% ammonium sulfate saturation showed maximum activity. A protein band with an apparent molecular mass of ~ 50 kDa related to NYSO laccase was identified through SDS-PAGE and zymography. The partially purified enzyme exhibited maximum activity at 55 °C and pH suboptimal (2.5–5.0). Remarkable activation for enzyme activity was recognized after 10-min exposure to temperatures (T) 50, 60, and 70 °C; time elongation caused inactivation, where ~ 50% of activity was lost after a 7-h exposure to 60 °C. Some metal ions Cu2+, Zn2+, Co2+, Ni2+, Mn2+, Cd2+, Cr2+, and Mg2+ caused strong stimulation for enzyme activity, but Fe2+ and Hg2+ reduced the activity. One millimolar of chelating agents [ethylenediamine tetraacetic acid (EDTA), sodium citrate, and sodium oxalate] caused strong activation for enzyme activity. Sodium dodecyl sulfate (SDS), cysteine-HCl, dithiothreitol (DTT), β-mercaptoethanol, thioglycolic acid, and sodium azide caused strong inhibition for NYSO laccase activity even at low concentration. One millimolar of urea, imidazole, kojic acid, phenylmethylsulfonyl fluoride (PMSF), H2O2, and Triton X-100 caused activation. The partially purified NYSO laccase had decolorization activity towards different dyes such as congo red, crystal violet, methylene blue, fast green, basic fuchsin, bromophenol blue, malachite green, bromocresol purple eriochrome black T, and Coomassie Brilliant Blue R-250 with various degree of degradation. Also, it had a vast range of substrate specificity including lignin, but with high affinity towards p-anisidine. Conclusion The promising properties of the newly studied laccase enzyme from Alcaligenes faecalis NYSO strain would support several industries such as textile, food, and paper and open the possibility for commercial use in water treatment. It will also open the door to new applications due to its ligninolytic properties in the near future.
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Affiliation(s)
- Soad A Abdelgalil
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institure (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Burg El-Arab City, Alexandria, 21934, Egypt
| | - Ahmad R Attia
- Environmental Studies Department, Institute of Graduate Studies and Research, Alexandria, Egypt
| | - Reyed M Reyed
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institure (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Burg El-Arab City, Alexandria, 21934, Egypt
| | - Nadia A Soliman
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institure (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Burg El-Arab City, Alexandria, 21934, Egypt.
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Goud BS, Cha HL, Koyyada G, Kim JH. Augmented Biodegradation of Textile Azo Dye Effluents by Plant Endophytes: A Sustainable, Eco-Friendly Alternative. Curr Microbiol 2020; 77:3240-3255. [PMID: 32951066 DOI: 10.1007/s00284-020-02202-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/04/2020] [Indexed: 01/02/2023]
Abstract
Textile industry consumes a large proportion of available water and releases huge amounts of toxic azo dye effluents, leading to an inevitable situation of acute environmental pollution that has been a significant threat to mankind. Decolorization or detoxification of harmful azo dyes has become a global priority to overcome the disastrous consequences and salvage the ecosystem. Biodegradation of textile azo dyes by endophytes stands to be a lucrative and viable alternative over conventional physico-chemical methods, owing to their eco-friendliness, cost-competitive and non-toxic nature. Especially, plant endophytic microbes exhibit promising biodegradation potential which has wired up the effective removal of textile azo dyes, attributing to their ability to produce dye degrading enzymes, laccases, peroxidases and azoreductases. Although both bacterial and fungal endophytes have been tried for azo dye degradation, endophytic fungi find broader application over bacteria. Despite of the advancements made in microbe-mediated biodegradation, there is still a need to fill the gap in lab to in situ translation of biodegradation research. This review concisely accentuates the xenobiotics of textile azo dyes and microbial mechanisms of biodegradation of textile azo dyes, positing plant endophytic community, especially bacterial and fungal endophytes as the potential dye degraders, highlighting currently reported dye degrading endophytic species.
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Affiliation(s)
- Burragoni Sravanthi Goud
- Department of Biotechnology, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
| | - Ha Lim Cha
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea
| | - Ganesh Koyyada
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
| | - Jae Hong Kim
- Department of Chemical Engineering, Yeungnam University, 214-1, Dae-hakro 280, Gyeongsan, 712-749, Gyeongbuk, Korea.
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16
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Mudhoo A, Ramasamy DL, Bhatnagar A, Usman M, Sillanpää M. An analysis of the versatility and effectiveness of composts for sequestering heavy metal ions, dyes and xenobiotics from soils and aqueous milieus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 197:110587. [PMID: 32325327 DOI: 10.1016/j.ecoenv.2020.110587] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/13/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
The persistence and bioaccumulation of environmental pollutants in water bodies, soils and living tissues remain alarmingly related to environmental protection and ecosystem restoration. Adsorption-based techniques appear highly competent in sequestering several environmental pollutants. In this review, the recent research findings reported on the assessments of composts and compost-amended soils as adsorbents of heavy metal ions, dye molecules and xenobiotics have been appraised. This review demonstrates clearly the high adsorption capacities of composts for umpteen environmental pollutants at the lab-scale. The main inferences from this review are that utilization of composts for the removal of heavy metal ions, dye molecules and xenobiotics from aqueous environments and soils is particularly worthwhile and efficient at the laboratory scale, and the adsorption behaviors and effectiveness of compost-type adsorbents for agrochemicals (e.g. herbicides and insecticides) vary considerably because of variabilities in structure, topology, bond connectivity, distribution of functional groups and interactions of xenobiotics with the active humic substances in composts. Compost-based field-scale remediation of environmental pollutants is still sparse and arguably much challenging to implement if, furthermore, real-world soil and water contamination issues are to be addressed effectively. Hence, significant research and process development efforts should be promptly geared and intensified in this direction by extrapolating the lab-scale findings in a cost-effective manner.
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Affiliation(s)
- Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837, Mauritius.
| | - Deepika Lakshmi Ramasamy
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud 123, Muscat, Oman
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam; School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, 4350, QLD, Australia.
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17
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Mehandia S, Sharma S, Arya SK. Isolation and characterization of an alkali and thermostable laccase from a novel Alcaligenes faecalis and its application in decolorization of synthetic dyes. ACTA ACUST UNITED AC 2019; 25:e00413. [PMID: 31890646 PMCID: PMC6933146 DOI: 10.1016/j.btre.2019.e00413] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/27/2019] [Accepted: 12/13/2019] [Indexed: 12/23/2022]
Abstract
Production and purification of laccase from Alcaligenes faecalis. Purified laccase from Alcaligenes faecalis active & stable at high temperature and pH. Laccase had remarkable specificity to an extensive range of probable substrate and tolerant to various metal ions. Efficiently decolorization of different synthetic dyes by laccase.
A laccase producing new bacterial strain (Alcaligenes faecalis XF1) was isolated from green site of Chandigarh (India) by standard screening method. Nutrient broth medium containing 0.2 mM CuSO4 was used for the production of laccase. Maximum production (110 U/ml) was achieved after four days of incubation. The extracellular laccase from the medium was purified by simple salt precipitation and ion exchange technique to get 3.8 fold purified protein with 1637.8 U/mg specific activity. Purified laccase (named as LAC1*) revealed its optimum activity at pH 8.0 and 80 °C temperature, and displayed remarkable stability in the range of 70–90 °C and in the pH range (pH 7.0–9.0). The single bands on SDS-PAGE represents the purity of LAC1* with molecular weight of ∼71 kDa. The kinetic parameters for 2,6-DMP oxidation was Km, Vmax and kcat were 480 μM, 110 U/mL and 1375 s−1. Enzyme activity of the LAC1* was significantly enhanced by Cu2+, Mg2+, Mn2+, SDS and NaCl, and was slightly inhibited in the presence of conventional inhibitors like cysteine, EDTA and sodium azide. Extracellular nature and significant stability of LAC1* under extreme conditions of temperature, pH, heavy metals, halides and detergents confined its suitability for various biotechnological and industrial applications which required these qualities of laccase. So after recognizing all these properties the purified laccase was studied for its application in decolorization of industrial dyes.
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Affiliation(s)
- Seema Mehandia
- Department of Biochemistry, Panjab University Chandigarh, India
- Department of Biotecnology, UIET, Panjab University Chandigarh, India
| | - S.C. Sharma
- Department of Biochemistry, Panjab University Chandigarh, India
| | - Shailendra Kumar Arya
- Department of Biotecnology, UIET, Panjab University Chandigarh, India
- Corresponding author.
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Irimia-Vladu M, Kanbur Y, Camaioni F, Coppola ME, Yumusak C, Irimia CV, Vlad A, Operamolla A, Farinola GM, Suranna GP, González-Benitez N, Molina MC, Bautista LF, Langhals H, Stadlober B, Głowacki ED, Sariciftci NS. Stability of Selected Hydrogen Bonded Semiconductors in Organic Electronic Devices. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:6315-6346. [PMID: 32565617 PMCID: PMC7297463 DOI: 10.1021/acs.chemmater.9b01405] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/11/2019] [Indexed: 05/02/2023]
Abstract
The electronics era is flourishing and morphing itself into Internet of Everything, IoE. At the same time, questions arise on the issue of electronic materials employed: especially their natural availability and low-cost fabrication, their functional stability in devices, and finally their desired biodegradation at the end of their life cycle. Hydrogen bonded pigments and natural dyes like indigo, anthraquinone and acridone are not only biodegradable and of bio-origin but also have functionality robustness and offer versatility in designing electronics and sensors components. With this Perspective, we intend to coalesce all the scattered reports on the above-mentioned classes of hydrogen bonded semiconductors, spanning across several disciplines and many active research groups. The article will comprise both published and unpublished results, on stability during aging, upon electrical, chemical and thermal stress, and will finish with an outlook section related to biological degradation and biological stability of selected hydrogen bonded molecules employed as semiconductors in organic electronic devices. We demonstrate that when the purity, the long-range order and the strength of chemical bonds, are considered, then the Hydrogen bonded organic semiconductors are the privileged class of materials having the potential to compete with inorganic semiconductors. As an experimental historical study of stability, we fabricated and characterized organic transistors from a material batch synthesized in 1932 and compared the results to a fresh material batch.
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Affiliation(s)
- Mihai Irimia-Vladu
- Joanneum
Research Forschungsgesellschaft mbH, Franz-Pichler Str. Nr. 30, 8160 Weiz, Austria
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
- Mihai
Irimia-Vladu. E-mail:
| | - Yasin Kanbur
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
- Department
of Metallurgical and Materials Engineering, Karabuk University, BaliklarkayasiMevkii, 78050 Karabük, Turkey
| | - Fausta Camaioni
- Joanneum
Research Forschungsgesellschaft mbH, Franz-Pichler Str. Nr. 30, 8160 Weiz, Austria
- School
of Industrial and Information Engineering, Politecnico di Milano, Via Raffaele Lambruschini, 15, 20156 Milano, Milan, Italy
| | - Maria Elisabetta Coppola
- Joanneum
Research Forschungsgesellschaft mbH, Franz-Pichler Str. Nr. 30, 8160 Weiz, Austria
- School
of Industrial and Information Engineering, Politecnico di Milano, Via Raffaele Lambruschini, 15, 20156 Milano, Milan, Italy
| | - Cigdem Yumusak
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
| | - Cristian Vlad Irimia
- Joanneum
Research Forschungsgesellschaft mbH, Franz-Pichler Str. Nr. 30, 8160 Weiz, Austria
- Bundesrealgymnasium
Seebacher, Seebachergasse 11, 8010 Graz, Austria
| | - Angela Vlad
- National
Institute for Laser, Plasma and Radiation Physics (INFLPR), Atomistilor Street, No. 409, Magurele, Bucharest, 077125 Ilfov, Romania
| | - Alessandra Operamolla
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via E. Orabona 4, I-70126 Bari, Italy
| | - Gianluca M. Farinola
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via E. Orabona 4, I-70126 Bari, Italy
| | - Gian Paolo Suranna
- Department
of Civil, Environmental and Chemical Engineering (DICATECh), Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy
| | - Natalia González-Benitez
- Department
of Biology and Geology, Physics and Inorganic Chemistry, Rey Juan Carlos University, Calle Tulipán s/n, 28933 Móstoles (Madrid), Spain
| | - Maria Carmen Molina
- Department
of Biology and Geology, Physics and Inorganic Chemistry, Rey Juan Carlos University, Calle Tulipán s/n, 28933 Móstoles (Madrid), Spain
| | - Luis Fernando Bautista
- Department
of Chemical and Environmental Technology, Rey Juan Carlos University, Calle Tulipán s/n, 28933 Móstoles (Madrid), Spain
| | - Heinz Langhals
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
- Department
Department of Chemistry, Ludwig-Maximilians
University München, Butenandtstr. 13, D-81377 München, Germany
| | - Barbara Stadlober
- Joanneum
Research Forschungsgesellschaft mbH, Franz-Pichler Str. Nr. 30, 8160 Weiz, Austria
| | - Eric Daniel Głowacki
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
- Linköping
University, Department of Science
and Technology, Laboratory of Organic Electronics, Bredgatan 33, Norrköping 60221, Sweden
| | - Niyazi Serdar Sariciftci
- Linz
Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenberger Str. Nr. 69, 4040 Linz, Austria
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Chittal V, Gracias M, Anu A, Saha P, Bhaskara Rao KV. Biodecolorization and Biodegradation of Azo Dye Reactive Orange-16 by Marine Nocardiopsis sp. IRANIAN JOURNAL OF BIOTECHNOLOGY 2019; 17:e1551. [PMID: 32195279 PMCID: PMC7080967 DOI: 10.29252/ijb.1551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Azo dyes are xenobiotic compounds that have bioaccumulated in the environment due to escalated industrial development.
These are hazardous in nature, possessing carcinogenic and mutagenic effects on human beings. Objectives: The perspective of the present study was to isolate and to determine azo dye (Reactive Orange-16) degrading potential of marine actinobacteria
isolated from sediment samples of Port Blair, India. Material and Methods: Actinobacteria with dye decolorization potential were isolated from sea sediment samples. The actinobacterial isolate with the highest dye decolorizing percentage was identified with the help
of phenotypic, biochemical and molecular studies. The different physico-chemical parameters for dye decolorization were also optimized. The nature of decolorization
by the potent isolate was determined with the help of High Performance Liquid chromatography (HPLC) and Fourier Transformed Infrared spectroscopy (FTIR) techniques.
Further the toxicity of RO-16 decolorized products was investigated with the help of phytotoxcity assay. Results: Out of six actinobacterial isolates, VITVAMB 1 possessed the most efficient RO-16 decolorization property. It decolorized 85.6% of RO-16 (250 mg L-1) within 24hrs.
Isolate VITVAMB 1 was identified to be Nocardiopsis sp. Maximum dye decolorization occurred at pH 8, temperature 35°C, 3% salt concentration
and a dye concentration of 50 mg L-1. Conclusions: The nature of decolorization by Nocardiopsis sp. was biodegradation. Additionally, the degraded dye metabolites were found to be
less toxic than pure dye. The high decolorization potential of VITVAMB 1 and the low toxicity of its degradation products make it a prospective
dye removal system. The marine origin of VITVAMB 1 also makes it an attractive source for novel azo dye reducing enzymes.
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Affiliation(s)
- Vaibhavi Chittal
- Biomolecules Laboratory, Technology Tower (TT 635), Vellore Institute of Technology (VIT) University, Vellore- 632014, Tamil Nadu, India
| | - Magaly Gracias
- Biomolecules Laboratory, Technology Tower (TT 635), Vellore Institute of Technology (VIT) University, Vellore- 632014, Tamil Nadu, India
| | - Anagha Anu
- Biomolecules Laboratory, Technology Tower (TT 635), Vellore Institute of Technology (VIT) University, Vellore- 632014, Tamil Nadu, India
| | - Purbasha Saha
- Biomolecules Laboratory, Technology Tower (TT 635), Vellore Institute of Technology (VIT) University, Vellore- 632014, Tamil Nadu, India
| | - K V Bhaskara Rao
- Biomolecules Laboratory, Technology Tower (TT 635), Vellore Institute of Technology (VIT) University, Vellore- 632014, Tamil Nadu, India
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20
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Góralczyk-Bińkowska A, Jasińska A, Długoński J. CHARACTERISTICS AND USE OF MULTICOPPER OXIDASES ENZYMES. ADVANCEMENTS OF MICROBIOLOGY 2019. [DOI: 10.21307/pm-2019.58.1.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Yasar G, Guven UG, Guduk E, Aktas F. Partial purification and characterization of the novel halotolerant and alkalophilic laccase produced by a new isolate of Bacillus subtilis LP2. BIOCATAL BIOTRANSFOR 2019. [DOI: 10.1080/10242422.2019.1594790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Gulhan Yasar
- Department of Biomedical Engineering, Institute of Science, Istanbul University, Istanbul, Turkey
| | | | - Elif Guduk
- Department of Dairy Science, University of Wisconsin-Madison, Madison, WI, USA
| | - Fatih Aktas
- Department of Environmental Engineering Faculty of Engineering, Duzce University, Duzce, Turkey
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22
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Zhao Y, Sun F, Yu J, Cai Y, Luo X, Cui Z, Hu Y, Wang X. Co-digestion of oat straw and cow manure during anaerobic digestion: Stimulative and inhibitory effects on fermentation. BIORESOURCE TECHNOLOGY 2018; 269:143-152. [PMID: 30172177 DOI: 10.1016/j.biortech.2018.08.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/10/2018] [Accepted: 08/11/2018] [Indexed: 05/16/2023]
Abstract
Impacts of adding different amounts of cow manure (CM) on the anaerobic digestion (AD) of oat straw (OS) with total solids content (TS) values of 4%, 6%, 8% and 10% was assessed over 50 days using batch experiments. A modified Gompertz model was introduced to predict the methane yield and determine the kinetic parameters. The optimum addition was a 1:2 ratio of CM to the OS added, which resulted in a suitable C/N ratio of 27 and a higher degradation rate of lignocellulose. The best cumulative methane yield of 841.77 mL/g volatile solids added (VSadded) was 26.64% greater than that of digesting OS alone. In addition, the amount of CM added produced larger effects than that of changes in the TS. However, higher CM concentrations were found to be inhibitory. Clustering analysis could provide significant guidance for demonstrating project process and combining farming and animal husbandry.
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Affiliation(s)
- Yubin Zhao
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Fanrong Sun
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Jiadong Yu
- Key Laboratory of Energy Resource Utilization from Agricultural Residues, Chinese Academy of Agricultural Engineering, Beijing 100125, China
| | - Yafan Cai
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Xiaosha Luo
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Zongjun Cui
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Yuegao Hu
- College of Agronomy, China Agricultural University, Beijing 100193, China
| | - Xiaofen Wang
- College of Agronomy, China Agricultural University, Beijing 100193, China.
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23
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Kadri T, Rouissi T, Magdouli S, Brar SK, Hegde K, Khiari Z, Daghrir R, Lauzon JM. Production and characterization of novel hydrocarbon degrading enzymes from Alcanivorax borkumensis. Int J Biol Macromol 2018; 112:230-240. [DOI: 10.1016/j.ijbiomac.2018.01.177] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 01/26/2018] [Accepted: 01/27/2018] [Indexed: 11/16/2022]
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24
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Yadav D, Ranjan B, Mchunu N, Roes-Hill ML, Kudanga T. Secretory expression of recombinant small laccase from Streptomyces coelicolor A3(2) in Pichia pastoris. Int J Biol Macromol 2017; 108:642-649. [PMID: 29203348 DOI: 10.1016/j.ijbiomac.2017.11.169] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/25/2017] [Accepted: 11/27/2017] [Indexed: 01/14/2023]
Abstract
This work reports for the first time the secretory expression of the small laccase (SLAC) from Streptomyces coelicolor A3(2) in Pichia pastoris. Using an AOX1 promoter and α factor as a secretion signal, the recombinant P. pastoris harbouring the laccase gene (rSLAC) produced high titres of extracellular laccase (500 ± 10 U/l), which were further increased seven fold by pre-incubation at 80 °C for 30 min. The enzyme (∼38 kDa) had an optimum activity at 80 °C, but optimum pH varied with substrate used. Km values for ABTS, SGZ and 2,6-DMP were 142.85 μM, 10 μM and 54.55 μM and the corresponding kcat values were 60.6 s-1, 25.36 s-1 and 27.84 s-1, respectively. The t1/2 values of the rSLAC at 60 °C, 70 °C, 80 °C were 60 h, 32 h and 10 h, respectively. The enzyme deactivation energy (Ed) was 117.275 kJ/mol while ΔG, ΔH and ΔS for thermal inactivation of the rSLAC were all positive. The rSLAC decolourised more than 90% of Brilliant Blue G and Trypan Blue dye in 6 h without the addition of a mediator. High titres of SLAC expressed in P. pastoris enhance its potential for various industrial applications.
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Affiliation(s)
- Deepti Yadav
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa
| | - Bibhuti Ranjan
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa
| | - Nokuthula Mchunu
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa
| | - Marilize Le Roes-Hill
- Biocatalysis and Technical Biology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville Campus, Symphony Way, PO Box 1906, Bellville, 7535, South Africa
| | - Tukayi Kudanga
- Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa.
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Medouni-Haroune L, Zaidi F, Medouni-Adrar S, Roussos S, Azzouz S, Desseaux V, Kecha M. Selective Isolation and Screening of Actinobacteria Strains Producing Lignocellulolytic Enzymes Using Olive Pomace as Substrate. IRANIAN JOURNAL OF BIOTECHNOLOGY 2017; 15:74-77. [PMID: 28959355 PMCID: PMC5582256 DOI: 10.15171/ijb.1278] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background
Olive pomace, as the main by-product of the olive oil industry, is recently recycled as fermentation substrate
for enzyme production.
Objectives
Actinobacteria isolates were separated from an Algerian soil under olive pomace cultivation and were evaluated
for their lignocellulolytic enzymes production.
Materials and Methods
Isolates of Actinobacteria were separated from soils around oil mills using four isolation
media, among them three were enriched by olive pomace. The isolates were screened for their cellulolytic, xylanolytic
and ligninolytic activities. Isolates with potential of producing lignocellulose-degrading enzymes were selected under
submerged fermentation based olive pomace.
Results
Ninety isolates of Actinobacteria were separated from soil samples. M3 medium (raw pomace autoclaved alone)
was the best isolation medium (68 strains), whereas, the soil from oil mill with continuous system (S1) led to separation of
52 strains. Among the 90 isolates, 82 were shown promising enzyme activity, 19 isolates were presented the largest zone
diameter (<30 mm). S1M3I and S1M3II isolates were exhibited the highest values.
Conclusions
Olive pomace with medium low cost and high titers of enzymes can be valorized by culture of Actinobacteria
to produce lignocellulolytic enzymes for industrial applications.
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Affiliation(s)
- Lamia Medouni-Haroune
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000 Bejaia, Algérie
| | - Farid Zaidi
- Département des Sciences Alimentaires, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000 Bejaia, Algérie
| | - Sonia Medouni-Adrar
- Laboratoire de Biomathématiques, Biophysique, Biochimie, et Scientométrie (L3BS), Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000 Bejaia, Algérie
| | - Sevastianos Roussos
- Equipe Eco technologies et Bioremédiation, Faculté St Jérome, Campus Etoile, Aix Marseille Université & Université Avignon; IMBE UMR CNRS-7263/IRD-237, Case 421, 13397 Marseille cedex 20, France
| | - Samia Azzouz
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000 Bejaia, Algérie
| | - Véronique Desseaux
- Institut des Sciences Moléculaires de Marseille, Faculté des Sciences et Techniques, St Jérome, Biosciences UMR CNRS 6263. Université Paul Cézanne, 13397 Marseille Cedex 20, France
| | - Mouloud Kecha
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000 Bejaia, Algérie
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Bharathiraja S, Suriya J, Krishnan M, Manivasagan P, Kim SK. Production of Enzymes From Agricultural Wastes and Their Potential Industrial Applications. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 80:125-148. [PMID: 28215322 DOI: 10.1016/bs.afnr.2016.11.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Enzymatic hydrolysis is the significant technique for the conversion of agricultural wastes into valuable products. Agroindustrial wastes such as rice bran, wheat bran, wheat straw, sugarcane bagasse, and corncob are cheapest and plentifully available natural carbon sources for the production of industrially important enzymes. Innumerable enzymes that have numerous applications in industrial processes for food, drug, textile, and dye use have been produced from different types of microorganisms from agricultural wastes. Utilization of agricultural wastes offers great potential for reducing the production cost and increasing the use of enzymes for industrial purposes. This chapter focuses on economic production of actinobacterial enzymes from agricultural wastes to make a better alternative for utilization of biomass generated in million tons as waste annually.
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Affiliation(s)
- S Bharathiraja
- CAS in Marine Biology, Annamalai University, Porto Novo, India
| | - J Suriya
- School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, India
| | - M Krishnan
- School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, India
| | - P Manivasagan
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea
| | - S-K Kim
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea; Specialized Graduate School Science & Technology Convergence, Pukyong National University, Busan, Republic of Korea.
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Yang S, Long Y, Yan H, Cai H, Li Y, Wang X. Gene cloning, identification, and characterization of the multicopper oxidase CumA fromPseudomonassp. 593. Biotechnol Appl Biochem 2016; 64:347-355. [DOI: 10.1002/bab.1501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 04/10/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Sheng Yang
- The Faculty of Life Sciences; Hubei University; Wuhan People's Republic of China
- Hubei Collaborative innovation Center for Green Transformation of Bio-Resources; Hubei University; Wuhan People's Republic of China
| | - Yan Long
- College of Life Sciences; Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); State Key Laboratory of Virology; Wuhan University; Wuhan People's Republic of China
| | - Hong Yan
- The Faculty of Life Sciences; Hubei University; Wuhan People's Republic of China
- Hubei Collaborative innovation Center for Green Transformation of Bio-Resources; Hubei University; Wuhan People's Republic of China
| | - Huawan Cai
- The Faculty of Life Sciences; Hubei University; Wuhan People's Republic of China
- Hubei Collaborative innovation Center for Green Transformation of Bio-Resources; Hubei University; Wuhan People's Republic of China
| | - Yadong Li
- The Faculty of Life Sciences; Hubei University; Wuhan People's Republic of China
- Hubei Collaborative innovation Center for Green Transformation of Bio-Resources; Hubei University; Wuhan People's Republic of China
| | - Xingguo Wang
- The Faculty of Life Sciences; Hubei University; Wuhan People's Republic of China
- Hubei Collaborative innovation Center for Green Transformation of Bio-Resources; Hubei University; Wuhan People's Republic of China
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Kamala K, Sivaperumal P. Biomedical Applications of Enzymes From Marine Actinobacteria. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 80:107-123. [PMID: 28215321 DOI: 10.1016/bs.afnr.2016.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Marine microbial enzyme technologies have progressed significantly in the last few decades for different applications. Among the various microorganisms, marine actinobacterial enzymes have significant active properties, which could allow them to be biocatalysts with tremendous bioactive metabolites. Moreover, marine actinobacteria have been considered as biofactories, since their enzymes fulfill biomedical and industrial needs. In this chapter, the marine actinobacteria and their enzymes' uses in biological activities and biomedical applications are described.
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Affiliation(s)
- K Kamala
- Center for Environmental Nuclear Research, Directorate of Research, SRM University, Kattankulathur, India.
| | - P Sivaperumal
- Center for Environmental Nuclear Research, Directorate of Research, SRM University, Kattankulathur, India
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Suriya J, Bharathiraja S, Manivasagan P, Kim SK. Enzymes From Rare Actinobacterial Strains. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 79:67-98. [PMID: 27770864 DOI: 10.1016/bs.afnr.2016.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Actinobacteria constitute rich sources of novel biocatalysts and novel natural products for medical and industrial utilization. Although actinobacteria are potential source of economically important enzymes, the isolation and culturing are somewhat tough because of its extreme habitats. But now-a-days, the rate of discovery of novel compounds producing actinomycetes from soil, freshwater, and marine ecosystem has increased much through the developed culturing and genetic engineering techniques. Actinobacteria are well-known source of their bioactive compounds and they are the promising source of broad range of industrially important enzymes. The bacteria have the capability to degrade a range of pesticides, hydrocarbons, aromatic, and aliphatic compounds (Sambasiva Rao, Tripathy, Mahalaxmi, & Prakasham, 2012). Most of the enzymes are mainly derived from microorganisms because of their easy of growth, minimal nutritional requirements, and low-cost for downstream processing. The focus of this review is about the new, commercially useful enzymes from rare actinobacterial strains. Industrial requirements are now fulfilled by the novel actinobacterial enzymes which assist the effective production. Oxidative enzymes, lignocellulolytic enzymes, extremozymes, and clinically useful enzymes are often utilized in many industrial processes because of their ability to catalyze numerous reactions. Novel, extremophilic, oxidative, lignocellulolytic, and industrially important enzymes from rare Actinobacterial population are discussed in this chapter.
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Affiliation(s)
- J Suriya
- School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - S Bharathiraja
- CAS in Marine Biology, Annamalai University, Porto Novo, Tamil Nadu, India
| | - P Manivasagan
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea.
| | - S-K Kim
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea; Specialized Graduate School Science & Technology Convergence, Pukyong National University, Busan, Republic of Korea.
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30
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Murugesan R, Vembu B. Production of extracellular laccase from the newly isolated Bacillus sp. PK4. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajb2016.15509] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Chen M, Xu P, Zeng G, Yang C, Huang D, Zhang J. Bioremediation of soils contaminated with polycyclic aromatic hydrocarbons, petroleum, pesticides, chlorophenols and heavy metals by composting: Applications, microbes and future research needs. Biotechnol Adv 2015; 33:745-55. [DOI: 10.1016/j.biotechadv.2015.05.003] [Citation(s) in RCA: 570] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 05/12/2015] [Accepted: 05/20/2015] [Indexed: 11/24/2022]
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Environmental factors shaping the abundance and distribution of laccase-encoding bacterial community with potential phenolic oxidase capacity during composting. Appl Microbiol Biotechnol 2015; 99:9191-201. [DOI: 10.1007/s00253-015-6754-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 05/26/2015] [Accepted: 05/30/2015] [Indexed: 11/26/2022]
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Mahmood S, Khalid A, Arshad M, Mahmood T, Crowley DE. Detoxification of azo dyes by bacterial oxidoreductase enzymes. Crit Rev Biotechnol 2015; 36:639-51. [DOI: 10.3109/07388551.2015.1004518] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Shahid Mahmood
- Department of Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi, Pakistan,
| | - Azeem Khalid
- Department of Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi, Pakistan,
| | - Muhammad Arshad
- Institute of Soil & Environmental Sciences, University of Agriculture, Faisalabad, Pakistan, and
| | - Tariq Mahmood
- Department of Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi, Pakistan,
| | - David E. Crowley
- Department of Environmental Sciences, University of California, Riverside, CA, USA
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Diversity of two-domain laccase-like multicopper oxidase genes in Streptomyces spp.: identification of genes potentially involved in extracellular activities and lignocellulose degradation during composting of agricultural waste. Appl Environ Microbiol 2014; 80:3305-14. [PMID: 24657870 DOI: 10.1128/aem.00223-14] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Traditional three-domain fungal and bacterial laccases have been extensively studied for their significance in various biotechnological applications. Growing molecular evidence points to a wide occurrence of more recently recognized two-domain laccase-like multicopper oxidase (LMCO) genes in Streptomyces spp. However, the current knowledge about their ecological role and distribution in natural or artificial ecosystems is insufficient. The aim of this study was to investigate the diversity and composition of Streptomyces two-domain LMCO genes in agricultural waste composting, which will contribute to the understanding of the ecological function of Streptomyces two-domain LMCOs with potential extracellular activity and ligninolytic capacity. A new specific PCR primer pair was designed to target the two conserved copper binding regions of Streptomyces two-domain LMCO genes. The obtained sequences mainly clustered with Streptomyces coelicolor, Streptomyces violaceusniger, and Streptomyces griseus. Gene libraries retrieved from six composting samples revealed high diversity and a rapid succession of Streptomyces two-domain LMCO genes during composting. The obtained sequence types cluster in 8 distinct clades, most of which are homologous with Streptomyces two-domain LMCO genes, but the sequences of clades III and VIII do not match with any reference sequence of known streptomycetes. Both lignocellulose degradation rates and phenol oxidase activity at pH 8.0 in the composting process were found to be positively associated with the abundance of Streptomyces two-domain LMCO genes. These observations provide important clues that Streptomyces two-domain LMCOs are potentially involved in bacterial extracellular phenol oxidase activities and lignocellulose breakdown during agricultural waste composting.
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Kimura A, Shimazaki Y. Micro-scale extraction and analysis of intact carboxylesterase after trapping on an immunoaffinity membrane surface. Appl Biochem Biotechnol 2014; 172:4053-61. [PMID: 24610038 DOI: 10.1007/s12010-014-0807-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 02/12/2014] [Indexed: 02/05/2023]
Abstract
Porcine liver carboxylesterase was captured using an immunoaffinity membrane, which was prepared by separating an anti-porcine esterase antibody using non-denaturing two-dimensional electrophoresis, followed by transfer to a polyvinylidene difluoride membrane and staining. The activity of this esterase was 0.008 units after it was captured in the tiny spaces (4 mm(2)) of this membrane and eluted by rinsing with 5 μL of aspartic acid solution. The molecular mass of the eluted esterase was m/z 61,885 according to matrix-assisted laser desorption/ionization time-of-flight mass spectrometry after the purification of this enzyme from the porcine liver cytosol. The purified enzyme's activity was inhibited by 6,9-diamino-2-ethoxyacridine, and this inhibition was retained even after extracting the enzyme from the immunoaffinity membrane. These results indicate that micro-scale extraction and analysis of a carboxylesterase are possible when the enzyme is trapped using an immunoaffinity membrane and eluted with aspartic acid.
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Affiliation(s)
- Ayaka Kimura
- Graduate School of Science and Engineering (Science section), Ehime University, Matsuyama, 790-8577, Japan
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Draft Genome Sequence of Textile Azo Dye-Decolorizing and -Degrading Pseudomonas aeruginosa Strain PFK10, Isolated from the Common Effluent Treatment Plant of the Ankleshwar Industrial Area of Gujarat, India. GENOME ANNOUNCEMENTS 2014; 2:2/1/e00019-14. [PMID: 24503984 PMCID: PMC3916478 DOI: 10.1128/genomea.00019-14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Here, we report the draft genome sequence of Pseudomonas aeruginosa strain PFK10, isolated from the common effluent treatment plant (CETP) of the Ankleshwar industrial area of Gujarat, India. The 6.04-Mb draft genome sequence of strain PFK10 provides information about the genes encoding enzymes that enable the strain to decolorize and degrade textile azo dye.
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Terres J, Battisti R, Andreaus J, de Jesus PC. Decolorization and degradation of Indigo Carmine dye from aqueous solution catalyzed by horseradish peroxidase. BIOCATAL BIOTRANSFOR 2014. [DOI: 10.3109/10242422.2013.873416] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Fernandes TAR, Silveira WBD, Passos FML, Zucchi TD. Laccases from <i>Actinobacteria</i>—What We Have and What to Expect. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/aim.2014.46035] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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