1
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Xu Y, Anker Y, Talawar MP. Degradation of tetracycline, oxytetracycline & ampicillin by purified multiple copper oxidase like laccase from Stentrophomonas sp. YBX1. Braz J Microbiol 2024; 55:1529-1543. [PMID: 38340257 PMCID: PMC11153415 DOI: 10.1007/s42770-024-01247-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 01/02/2024] [Indexed: 02/12/2024] Open
Abstract
Multiple copper oxidase (MCO) like laccase is widely distributed in higher plant, fungi and bacteria. This study identified MCO like laccase producing bacterium isolated from a wastewater treatment plant based on 16S rRNA sequence analysis, and they were further confirmed by phylogenetic reconstruction. Biochemical and gene characterization of MCO like laccase from Stenotrophomonas sp. YBX1 is presented. Purification of MCO like laccase was carried out by ion exchange HQ Trap column and followed by gel filtration spheracryl S-100 column. The purified MCO like laccase from Stenotrophomonas sp. YBX1 shows a total activity of 1252 units and specific activity 391.2 U/mg and protein concentration 0.32 mg/mL. In SDS PAGE, the approximate molecular mass was found at 66 kDa and further confirmed from an MS spectrum of MALDI-TOF. The purified MCO like laccase is capable of degradation of antibiotics such as tetracycline completely, whereas oxytetracycline (78%) and ampicillin (62%) degraded within 96 min without any redox mediators at pH 5 and 30 ºC. Its degradation pathway was based on identification of metabolites by LC-MS spectrum. The enzymatic degradation may be used in advanced treatment of antibiotics containing wastewater.
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Affiliation(s)
- Yanbin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yaakov Anker
- Department of Chemical Engineering, Ariel University, 40700, Ariel, Israel
| | - Manjunatha P Talawar
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
- Department of Chemical Engineering, Ariel University, 40700, Ariel, Israel.
- Department of Life Science, Garden City University, Bangalore, 580049, India.
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510 006, China.
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2
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Beeson W, Gabriel K, Cornelison C. Fungi as a source of eumelanin: current understanding and prospects. J Ind Microbiol Biotechnol 2023; 50:kuad014. [PMID: 37336591 PMCID: PMC10569377 DOI: 10.1093/jimb/kuad014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
Melanins represent a diverse collection of pigments with a variety of structures and functions. One class of melanin, eumelanin, is recognizable to most as the source of the dark black color found in cephalopod ink. Sepia officinalis is the most well-known and sought-after source of non-synthetic eumelanin, but its harvest is limited by the availability of cuttlefish, and its extraction from an animal source brings rise to ethical concerns. In recent years, these limitations have become more pressing as more applications for eumelanin are developed-particularly in medicine and electronics. This surge in interest in the applications of eumelanin has also fueled a rise in the interest of alternative, bio-catalyzed production methods. Many culinarily-utilized fungi are ideal candidates in this production scheme, as examples exist which have been shown to produce eumelanin, their growth at large scales is well understood, and they can be cultivated on recaptured waste streams. However, much of the current research on the fungal production of eumelanin focuses on pathogenic fungi and eumelanin's role in virulence. In this paper, we will review the potential for culinary fungi to produce eumelanin and provide suggestions for new research areas that would be most impactful in the search for improved fungal eumelanin producers.
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Affiliation(s)
- William Beeson
- Department of Molecular and Cellular Biology, Kennesaw State
University, 1000 Chastain Road NW, Kennesaw, GA
30144, USA
| | - Kyle Gabriel
- Department of Molecular and Cellular Biology, Kennesaw State
University, 1000 Chastain Road NW, Kennesaw, GA
30144, USA
| | - Christopher Cornelison
- Department of Molecular and Cellular Biology, Kennesaw State
University, 1000 Chastain Road NW, Kennesaw, GA
30144, USA
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3
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Huang H, Zhang W, Han X, Han Z, Song D, Li W, Li Z, Wang Y, Xu W. Effect of polydopamine deposition on wool fibers on the construction of melanin. J Appl Polym Sci 2022. [DOI: 10.1002/app.53396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hongbo Huang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Wen Zhang
- College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China
| | - Xiaoyu Han
- College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China
| | - Zongbao Han
- College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China
| | - Dengpeng Song
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Wenbin Li
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Zhujun Li
- College of Textiles Guangdong Polytechnic Guangzhou China
| | - Yunli Wang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
- College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China
- Hubei Key Laboratory of Biomass Fibers and Eco‐Dyeing & Finishing Wuhan Textile University Wuhan China
| | - Weilin Xu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
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Zhou X, Gao S, Huang D, Lu Z, Guan Y, Zou L, Hu K, Zhao Z, Zhang Y. Bioinspired, Ultra-fast Polymerization of Dopamine Under Mild Conditions. Macromol Rapid Commun 2022; 43:e2200581. [PMID: 35881763 DOI: 10.1002/marc.202200581] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Indexed: 11/06/2022]
Abstract
Spontaneous oxidative polymerization of dopamine (DA) has been widely exploited as a facile and versatile method for surface modification. However, the reaction is very slow and only occurs in alkaline solutions, which severely limit its applications. Herein we report that the reaction can be dramatically accelerated by using Fe2+ as catalyst. While it takes hours and days using conventional method, the Fe2+ -catalyzed reaction finishes almost immediately at pH 7.0. In addition, under the catalysis of Fe2+ , the reaction can occur at a pH down to 4.0. The fast Fe2+ -catalyzed polymerization of DA leads to fast deposition of polydopamine (PDA) coating, thus allowing fast surface modification and textile dyeing. The Fe2+ -catalyzed reaction also allows spatial control over the PDA deposition. The fast, simple and mild surface modification method developed here will find applications in numerous fields. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Xiaoman Zhou
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Sijia Gao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Di Huang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Zhengbo Lu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Ying Guan
- Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Lei Zou
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Keling Hu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Zhuo Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China
| | - Yongjun Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin, 300387, P. R. China.,Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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5
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Panwar V, Dey B, Sheikh JN, Dutta T. Thermostable bacterial laccase for sustainable dyeing using plant phenols. RSC Adv 2022; 12:18168-18180. [PMID: 35800313 PMCID: PMC9210865 DOI: 10.1039/d2ra02137d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/03/2022] [Indexed: 11/21/2022] Open
Abstract
Laccase is regarded as an efficacious eco-friendly enzyme in various industries. Thus, various laccases have been explored to mitigate the environmental effects of conventional industrial processing; however, the prospects of laccase in hair dyeing have not been thoroughly explored to date. On account of the adverse environmental and health-related issues posed by chemical hair dyeing, laccase as a natural alternative in dyeing hair has recently gained attention. In this study, we executed hair dyeing with different colours and shades of hair dyes developed from natural plant phenols, including ferulic acid, gallic acid, catechol, and syringaldehyde, catalysed by a novel thermostable bacterial laccase (LacT) from Brevibacillus agri. The dyed hair was characterised in terms of its colourimetric parameters (L*, a*, and b*), colour strength (K/S), reflectance (R) and colour durability. L* means luminosity and is defined by L* values from 0 (black) to 100 (white). A positive value of a* means red shades and a negative value indicates green shades. A positive value of b* shows yellow shades and a negative value indicates blue shades. Optical microscopy of circular and longitudinal sections of the dyed hair revealed that the laccase-catalysed dyes did not merely stick to the surface; instead, they well-penetrated the hair. Furthermore, the dyeing process did not affect the surface morphology of the dyed hair. The dyed hair also exhibited a desirable range of colour diversity in terms of market-driven demands and showed considerable resistance to fading during shampooing and pH alterations. Post-dyeing, the texture and tensile strength of the dyed hair remained nearly unchanged. Overall, the outcomes suggest that LacT holds high potential to be exploited extensively in the hair dyeing industry as an alternative to chemical hair dyes. Laccase is regarded as an efficacious eco-friendly enzyme in various industries.![]()
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Affiliation(s)
- Varsha Panwar
- Enzyme Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, MS 731, Hauz Khas, New Delhi 110016, India
| | - Bipasa Dey
- Enzyme Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, MS 731, Hauz Khas, New Delhi 110016, India
| | - Javed Nabibaksha Sheikh
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Tanmay Dutta
- Enzyme Technology Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, MS 731, Hauz Khas, New Delhi 110016, India
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6
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Kołodziejczak-Radzimska A, Zembrzuska J, Siwińska-Ciesielczyk K, Jesionowski T. Catalytic and Physicochemical Evaluation of a TiO 2/ZnO/Laccase Biocatalytic System: Application in the Decolorization of Azo and Anthraquinone Dyes. MATERIALS 2021; 14:ma14206030. [PMID: 34683638 PMCID: PMC8537205 DOI: 10.3390/ma14206030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/05/2021] [Accepted: 10/09/2021] [Indexed: 11/25/2022]
Abstract
A TiO2/ZnO oxide system was proposed as a support for the immobilization of laccase from Trametes versicolor (LTV). The obtained TiO2/ZnO/LTV biocatalytic system was then applied in the decolorization/degradation of C.I. Reactive Black 5 and C.I. Acid Green 25 dyes. The efficiency of immobilization was evaluated based on catalytic properties (Bradford method, oxidation reaction of 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) and physicochemical (spectroscopic, porous, electrokinetic) analysis. The immobilization process was carried out with high performance (99.4%). Immobilized laccase retained about 40% of its activity in the whole analyzed temperature range and after 10 reaction cycles. Immobilization efficiency was also indirectly confirmed by the presence of characteristic functional groups (–C–H and –C–O), nitrogen and carbon on the TiO2/ZnO/LTV biocatalytic surface, identified by spectroscopic analyses. The increase in the surface area to 126 m2/g, change of isoelectric point (2.0) and zeta potential ranges (from +12.0 to −20.0 mV) after the immobilization process were also observed. The results show that the designed biocatalytic system enables the removal of acid dyes (C.I. Reactive Black 5 and C.I. Acid Green 25) with high efficiency (99% and 70%, respectively). Mass spectroscopy analysis indicated possible degradation products formed by the cleavage of N=N and C–N bonds.
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Affiliation(s)
- Agnieszka Kołodziejczak-Radzimska
- Institute of Technology and Chemical Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo, PL-60965 Poznan, Poland; (K.S.-C.); (T.J.)
- Correspondence:
| | - Joanna Zembrzuska
- Institute of Chemistry and Technical Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo, PL-60965 Poznan, Poland;
| | - Katarzyna Siwińska-Ciesielczyk
- Institute of Technology and Chemical Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo, PL-60965 Poznan, Poland; (K.S.-C.); (T.J.)
| | - Teofil Jesionowski
- Institute of Technology and Chemical Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo, PL-60965 Poznan, Poland; (K.S.-C.); (T.J.)
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7
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Ahn SY, Jang S, Sudheer PDVN, Choi KY. Microbial Production of Melanin Pigments from Caffeic Acid and L-tyrosine Using Streptomyces glaucescens and FCS-ECH-Expressing Escherichia coli. Int J Mol Sci 2021; 22:2413. [PMID: 33673727 PMCID: PMC7957706 DOI: 10.3390/ijms22052413] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 12/23/2022] Open
Abstract
In this study, synthetic allomelanin was prepared from wild-type Streptomyces glaucescens and recombinant Escherichia coli BL21(DE3) strains. S. glaucescens could produce 125.25 ± 6.01 mg/L of melanin with a supply of 5 mM caffeic acid within 144 h. The ABTS radical scavenging capacity of S. glaucescens melanin was determined to be approximately 7.89 mg/mL of IC50 value, which was comparable to L-tyrosine-based eumelanin. The isolated melanin was used in cotton fabric dyeing, and the effect of copper ions, laccase enzyme treatment, and the dyeing cycle on dyeing performance was investigated. Interestingly, dyeing fastness was greatly improved upon treatment with the laccase enzyme during the cotton dyeing process. Besides, the supply of C5-diamine, which was reported to lead to more complex crosslinking between melanin units, to caffeic acid-based melanin synthesis was also investigated for higher production and novel functionalities. To facilitate the supply of caffeic acid and C5-diamine, E. coli strains expressing each or combinations of tyrosine ammonia lyase/p-coumarate 3-hydroxylase, feruloyl-CoA synthetase/enoyl-CoA hydratase/aldolase, and tyrosinase/lysine decarboxylase enzymes were prepared and investigated for their eumelanin, C5-diamine, and allomelanin production from L-tyrosine and L-lysine, respectively. Finally, H-NMR, FT-IR, and MALDI-TOF analysis of the synthetic melanin pigments were attempted to obtain the chemical information.
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Affiliation(s)
- Soo-Yeon Ahn
- Environment Research Institute, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
| | - Seyoung Jang
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
| | | | - Kwon-Young Choi
- Environment Research Institute, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea;
- Department of Environmental Engineering, College of Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea
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8
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New strategy for grafting hydrophobization of lignocellulosic fiber materials with octadecylamine using a laccase/TEMPO system. Int J Biol Macromol 2020; 160:192-200. [PMID: 32450328 DOI: 10.1016/j.ijbiomac.2020.05.167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/15/2020] [Accepted: 05/20/2020] [Indexed: 12/16/2022]
Abstract
The enzymatic functionalization of lignocellulosic fibers using oxidoreductases was successfully achieved by targeting lignin moieties as grafting sites on the surface. In this study, a novel strategy for hydrophobization of lignocelluloses was investigated, which involved the laccase/TEMPO-mediated grafting of octadecylamine (OA) onto both lignin and cellulose components of jute fabrics. The results showed that OA monomers were successfully grafted onto jute fabric surface using the laccase/TEMPO system with the grafting percentage and efficiency values of 0.712% and 10.571%, respectively. The primary hydroxyl groups of cellulose were oxidized by laccase/TEMPO to carbonyl groups, which were then coupled with amino-contained OA monomers via Schiff base reaction. The phenolic hydroxyl groups of lignin were transformed by laccase to radicals, on which OA molecules were grafted via Michael addition reaction. Consequently, grafted jute fabrics showed a considerable increase in the surface hydrophobicity with a contact angle of 125.9° and a wetting time of at least 2 h. Furthermore, there was an acceptable decrease in the breaking strength of jute fabrics by 13.60%, and the color of fabrics turned yellowish and reddish. This eco-friendly enzymatic process provides a new strategy for grafting hydrophobization and even functionalization of lignocellulosic fiber materials using amino compounds.
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9
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Rodríguez-Couto S. Fungal Laccase: A Versatile Enzyme for Biotechnological Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-10480-1_13] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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10
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Guan ZB, Luo Q, Wang HR, Chen Y, Liao XR. Bacterial laccases: promising biological green tools for industrial applications. Cell Mol Life Sci 2018; 75:3569-3592. [PMID: 30046841 PMCID: PMC11105425 DOI: 10.1007/s00018-018-2883-z] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/30/2018] [Accepted: 07/19/2018] [Indexed: 11/26/2022]
Abstract
Multicopper oxidases (MCOs) are a pervasive family of enzymes that oxidize a wide range of phenolic and nonphenolic aromatic substrates, concomitantly with the reduction of dioxygen to water. MCOs are usually divided into two functional classes: metalloxidases and laccases. Given their broad substrate specificity and eco-friendliness (molecular oxygen from air as is used as the final electron acceptor and they only release water as byproduct), laccases are regarded as promising biological green tools for an array of applications. Among these laccases, those of bacterial origin have attracted research attention because of their notable advantages, including broad substrate spectrum, wide pH range, high thermostability, and tolerance to alkaline environments. This review aims to summarize the significant research efforts on the properties, mechanisms and structures, laccase-mediator systems, genetic engineering, immobilization, and biotechnological applications of the bacteria-source laccases and laccase-like enzymes, which principally include Bacillus laccases, actinomycetic laccases and some other species of bacterial laccases. In addition, these enzymes may offer tremendous potential for environmental and industrial applications.
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Affiliation(s)
- Zheng-Bing Guan
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Quan Luo
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Hao-Ran Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yu Chen
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xiang-Ru Liao
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
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11
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Yan B, Zhou Q, Xing T, Chen G. Dopamine-Dyed and Functionally Finished Silk with Rapid Oxidation Polymerization. Polymers (Basel) 2018; 10:E728. [PMID: 30960653 PMCID: PMC6403928 DOI: 10.3390/polym10070728] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 06/21/2018] [Accepted: 06/29/2018] [Indexed: 11/16/2022] Open
Abstract
Nowadays, more and more attention has been paid to ecological environment problems, and the dyeing and finishing field is no exception. Environmentally friendly dyeing and finishing methods have been extensively studied. Inspired by the bioadhesive force of marine mussels, dopamine (DA) was applied as a dyestuff and investigated in textile dyeing. In this work, dopamine was dyed on silk with a rapid oxidation polymerization in the presence of metal ions (Fe3+) and sodium perborate oxidant (Ox). The polydopamine (PDA) was rapidly deposited on silk fabric and the dyeing process was optimized as follows: the concentration of DA was 2 g·L-1, and that of Fe3+ was 2 mmol·L-1; the total reaction time was 50 min and reacted at 50 °C; 9 mmol·L-1 Ox was added at 20 min. The K/S value of the treated silk fabric reached 11.46. The color fastness of dyed fabric to light fastness reached Level 4. The SEM and AFM tests showed that the particles attached to the fabric surface and increased the roughness. The XPS test further proved that polydopamine (PDA) was deposited on the fabric. The treated fabric also had a good anti-UV property with a UPF >30 and UVA <4%. The water contact angle of treated fabric attained 142.6°, showing better hydrophobicity, and the weft breaking strength was also improved. This environmentally friendly dyeing and finishing method can be applied and extended to other fabrics.
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Affiliation(s)
- Biaobiao Yan
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China.
| | - Qingqing Zhou
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China.
| | - Tieling Xing
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China.
| | - Guoqiang Chen
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China.
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12
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Slagman S, Zuilhof H, Franssen MCR. Laccase-Mediated Grafting on Biopolymers and Synthetic Polymers: A Critical Review. Chembiochem 2018; 19:288-311. [PMID: 29111574 PMCID: PMC5836925 DOI: 10.1002/cbic.201700518] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Indexed: 12/27/2022]
Abstract
Laccase-mediated grafting on lignocelluloses has gained considerable attention as an environmentally benign method to covalently modify wood, paper and cork. In recent decades this technique has also been employed to modify fibres with a polysaccharide backbone, such as cellulose or chitosan, to infer colouration, antimicrobial activity or antioxidant activity to the material. The scope of this approach has been further widened by researchers, who apply mediators or high redox potential laccases and those that modify synthetic polymers and proteins. In all cases, the methodology relies on one- or two-electron oxidation of the surface functional groups or of the graftable molecule in solution. However, similar results can very often be achieved through simple deposition, even after extensive washing. This unintended adsorption of the active substance could have an adverse effect on the durability of the applied coating. Differentiating between actual covalent binding and adsorption is therefore essential, but proves to be challenging. This review not only covers excellent research on the topic of laccase-mediated grafting over the last five to ten years, but also provides a critical comparison to highlight either the lack or presence of compelling evidence for covalent grafting.
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Affiliation(s)
- Sjoerd Slagman
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
| | - Han Zuilhof
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
- School of Pharmaceutical Sciences and TechnologyTianjin University92 Weijin RoadNankai DistrictTianjin92000P. R. China
| | - Maurice C. R. Franssen
- Laboratory of Organic ChemistryWageningen University & ResearchStippeneng 46708 WEWageningenThe Netherlands
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