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Li Z, Lu F, Liu Y. A Review of the Mechanism, Properties, and Applications of Hydrogels Prepared by Enzymatic Cross-linking. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37390351 DOI: 10.1021/acs.jafc.3c01162] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Hydrogels, as biological materials, are widely used in food, tissue engineering, and biomedical applications. Nevertheless, many issues remain in the preparation of hydrogels by physical and chemical methods, such as low bioaffinity, weak mechanical properties, and unstable structures, which also limit their applications in other fields. However, the enzymatic cross-linking method has the advantages of high catalytic efficiency, mild reaction conditions, and the presence of nontoxic substances. In this review, we evaluated the chemical, physical, and biological methods of preparing hydrogels and introduced three common cross-linking enzymes and their principles for preparing hydrogels. This review introduced the applications and properties of hydrogels prepared by the enzymatic method and also provided some suggestions regarding the current situation and future development of hydrogels prepared by enzymatic cross-linking.
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Affiliation(s)
- Ziyuan Li
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Yihan Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
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Lee W, Kim JS, Seo CW, Lee JW, Kim SH, Cho Y, Lim YW. Diversity of Cladosporium (Cladosporiales, Cladosporiaceae) species in marine environments and report on five new species. MycoKeys 2023; 98:87-111. [PMID: 37305062 PMCID: PMC10257140 DOI: 10.3897/mycokeys.98.101918] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 05/16/2023] [Indexed: 06/13/2023] Open
Abstract
Cladosporium species are cosmopolitan fungi, characterized by olivaceous or dark colonies with coronate conidiogenous loci and conidial hila with a central convex dome surrounded by a raised periclinal rim. Cladosporium species have also been discovered in marine environments. Although many studies have been performed on the application of marine originated Cladosporium species, taxonomic studies on these species are scarce. We isolated Cladosporium species from three under-studied habitats (sediment, seawater, and seaweed) in two districts including an intertidal zone in the Republic of Korea and the open sea in the Western Pacific Ocean. Based on multigenetic marker analyses (for the internal transcribed spacer, actin, and translation elongation factor 1), we identified fourteen species, of which five were found to represent new species. These five species were C.lagenariiformesp. nov., C.maltirimosumsp. nov., C.marinumsp. nov. in the C.cladosporioides species complex, C.snafimbriatumsp. nov. in the C.herbarum species complex, and C.marinisedimentumsp. nov. in the C.sphaerospermum species complex. Morphological characteristics of the new species and aspects of differences with the already known species are described herein together with molecular data.
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Affiliation(s)
- Wonjun Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Ji Seon Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Chang Wan Seo
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Jun Won Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Sung Hyun Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Yoonhee Cho
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
| | - Young Woon Lim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul 08826, Republic of KoreaSeoul National UniversitySeoulRepublic of Korea
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Singh J, Saharan V, Kumar S, Gulati P, Kapoor RK. Laccase grafted membranes for advanced water filtration systems: a green approach to water purification technology. Crit Rev Biotechnol 2017; 38:883-901. [DOI: 10.1080/07388551.2017.1417234] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jagdeep Singh
- Enzyme Biotechnology and Waste-water Treatment Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Vicky Saharan
- Enzyme Biotechnology and Waste-water Treatment Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Sanjay Kumar
- Enzyme Biotechnology and Waste-water Treatment Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Pooja Gulati
- Enzyme Biotechnology and Waste-water Treatment Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Rajeev Kumar Kapoor
- Enzyme Biotechnology and Waste-water Treatment Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
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Kandasamy S, Muniraj IK, Purushothaman N, Sekar A, Sharmila DJS, Kumarasamy R, Uthandi S. High Level Secretion of Laccase (LccH) from a Newly Isolated White-Rot Basidiomycete, Hexagonia hirta MSF2. Front Microbiol 2016; 7:707. [PMID: 27242729 PMCID: PMC4870842 DOI: 10.3389/fmicb.2016.00707] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/28/2016] [Indexed: 12/04/2022] Open
Abstract
Newer and novel laccases attract considerable attention due to its promising and valuable multiple applications in biotech industry. This present investigation documents, for the first time, on high level extracellular secretion of laccase (LccH) in newly isolated wood-degrading basidiomycete Hexagonia hirta MSF2. LccH was optimally active at 40°C in citrate phosphate buffer with a pH of 3.4. Optimized Cu(2+) in glucose yeast extract (GY) medium enhanced the LccH production by H. hirta to 1944.44 U.ml(-1). A further increment in LccH activity of 5671.30 U.ml(-1) was achieved by the addition of a phenolic inducer, 2,5 Xylidine. Zymogram and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis of LccH revealed that LccH is a monomer with a molecular mass of 66 kDa. MALDI-TOF-MS based peptide mass fingerprinting and comparative modeling of the amino acid sequence of LccH showed that it was closer to Trametes sp. AH28-2 (PDB: 3KW7) with 48% identity, 95% coverage, 0.011 alignment score and RMSD of 0.497Å. Crude LccH delignified lignocellulosic biomass such as wood and corncob, to a level of 28.6 and 16.5%, respectively. Such high level secretion, thermal and solvent stability of LccH make H. hirta a potential candidate not only for LccH production and biodelignification but also generation of lignin derived aromatic feed stock chemicals for industrial and environmental applications.
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Affiliation(s)
- Sujatha Kandasamy
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - Iniya K. Muniraj
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - Namitha Purushothaman
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - Ashika Sekar
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - D. J. S. Sharmila
- Department of Nanoscience and Technology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - Ramasamy Kumarasamy
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
| | - Sivakumar Uthandi
- Department of Agricultural Microbiology, Tamil Nadu Agricultural UniversityCoimbatore, India
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Dhakar K, Pandey A. Wide pH range tolerance in extremophiles: towards understanding an important phenomenon for future biotechnology. Appl Microbiol Biotechnol 2016; 100:2499-510. [PMID: 26780356 DOI: 10.1007/s00253-016-7285-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/28/2015] [Accepted: 12/29/2015] [Indexed: 12/20/2022]
Abstract
Microorganisms that inhabit the extreme pH environments are classified as acidophiles and alkaliphiles. A number of studies emerged from extreme high (hot springs, hydrothermal vents) as well as low temperature (arctic and antarctic regions, sea water, ice shelf, marine sediments, cold deserts, glaciers, temperate forests, and plantations) environments have highlighted the occurrence of microorganisms (thermophiles/psychrophiles) with the ability to tolerate wide pH range, from acidic to alkaline (1.5-14.0 in some cases), under laboratory conditions. However, the sampling source (soil/sediment) of these microorganisms showed the pH to be neutral or slightly acidic/alkaline. The aim of the present review is to discuss the phenomenon of wide pH range tolerance possessed by these microorganisms as a hidden character in perspective of their habitats, possible mechanisms, phylogeny, ecological and biotechnological relevance, and future perspectives. It is believed that the genome is a probable reservoir of the hidden variations. The extremophiles have the ability to adapt against the environmental change that is probably through the expression/regulation of the specific genes that were already present in the genome. The phenomenon is likely to have broad implications in biotechnology, including both environmental (such as bioremediation, biodegradation, and biocontrol), and industrial applications (as a source of novel extremozymes and many other useful bioactive compounds with wide pH range tolerance).
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Affiliation(s)
- Kusum Dhakar
- Biotechnological Applications, G. B. Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, 263 643, Uttarakhand, India
| | - Anita Pandey
- Biotechnological Applications, G. B. Pant Institute of Himalayan Environment and Development, Kosi-Katarmal, Almora, 263 643, Uttarakhand, India.
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