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Wang Q, Xiong J, Xu H, Sun W, Pan X, Cui S, Lv S, Zhang Y. Enhanced Enzymatic Performance of Immobilized Pseudomonas fluorescens Lipase on ZIF-8@ZIF-67 and Its Application to the Synthesis of Neryl Acetate with Transesterification Reaction. Molecules 2024; 29:2922. [PMID: 38930986 PMCID: PMC11207022 DOI: 10.3390/molecules29122922] [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: 05/28/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
In this study, hybrid skeleton material ZIF-8@ZIF-67 was synthesized by the epitaxial growth method and then was utilized as a carrier for encapsulating Pseudomonas fluorescens lipase (PFL) through the co-precipitation method, resulting in the preparation of immobilized lipase (PFL@ZIF-8@ZIF-67). Subsequently, it was further treated with glutaraldehyde to improve protein immobilization yield. Under optimal immobilization conditions, the specific hydrolytic activity of PFL@ZIF-8@ZIF-67 was 20.4 times higher than that of the free PFL. The prepared biocatalyst was characterized and analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FT-IR). Additionally, the thermal stability of PFL@ZIF-8@ZIF-67 at 50 °C was significantly improved compared to the free PFL. After 7 weeks at room temperature, PFL@ZIF-8@ZIF-67 retained 78% of the transesterification activity, while the free enzyme was only 29%. Finally, PFL@ZIF-8@ZIF-67 was applied to the neryl acetate preparation in a solvent-free system, and the yield of neryl acetate reached 99% after 3 h of reaction. After 10 repetitions, the yields of neryl acetate catalyzed by PFL@ZIF-8@ZIF-67 and the free PFL were 80% and 43%, respectively.
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Affiliation(s)
| | - Jian Xiong
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, China
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Alowasheeir A, Torad NL, Asahi T, Alshehri SM, Ahamad T, Bando Y, Eguchi M, Yamauchi Y, Terasawa Y, Han M. Synthesis of millimeter-scale ZIF-8 single crystals and their reversible crystal structure changes. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2292485. [PMID: 38259326 PMCID: PMC10802801 DOI: 10.1080/14686996.2023.2292485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/24/2023] [Indexed: 01/24/2024]
Abstract
Among various metal-organic frameworks (MOFs), the zeolitic imidazole framework (ZIF), constructed by the regular arrangement of 2-methylimidazole and metal ions, has garnered significant attention due to its distinctive crystals and pore structures. Variations in the sizes and shapes of ZIF crystals have been reported by changing the synthesis parameters, such as the molar ratios of organic ligands to metal ions, choice of solvents, and temperatures. Nonetheless, the giant ZIF-8 single crystals beyond the typical range have rarely been reported. Herein, we present the synthesis of millimeter-scale single crystal ZIF-8 using the solvothermal method in N,N-diethylformamide. The resulting 1-mm single crystal is carefully characterized through N2 adsorption-desorption isotherms, scanning electron microscopy, and other analytical techniques. Additionally, single-crystal X-ray diffraction is employed to comprehensively investigate the framework's mobility at various temperatures.
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Affiliation(s)
- Azhar Alowasheeir
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Nagy L. Torad
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
- Department of Chemistry, Khalifa University, Abu Dhabi, United Arab Emirates
- Advanced Materials Chemistry Center (AMCC), Khalifa University, Abu Dhabi, United Arab Emirates
| | - Toru Asahi
- School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Saad M. Alshehri
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Tansir Ahamad
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Yoshio Bando
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
- Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales, Australia
| | - Miharu Eguchi
- School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland, Australia
| | - Yusuke Yamauchi
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland, Australia
| | - Yukana Terasawa
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Shinjuku-ku, Tokyo, Japan
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto-shi, Kumamoto, Japan
| | - Minsu Han
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland, Australia
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Zhu C, Mou M, Yang L, Jiang Z, Zheng M, Li Z, Hong T, Ni H, Li Q, Yang Y, Zhu Y. Enzymatic hydrolysates of κ-carrageenan by κ-carrageenase-CLEA immobilized on amine-modified ZIF-8 confer hypolipidemic activity in HepG2 cells. Int J Biol Macromol 2023; 252:126401. [PMID: 37597638 DOI: 10.1016/j.ijbiomac.2023.126401] [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: 04/11/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
κ-Carrageenase can degrade κ-carrageenan to produce bioactive κ-carrageenan oligosaccharides (KCOs) that have potential applications in pharmaceutical, food, agricultural, and cosmetics industries. Immobilized enzymes gain their popularity due to their good reusability, enhanced stability, and tunability. In this study, the previously characterized catalytic domain of Pseudoalteromonas purpurea κ-carrageenase was covalently immobilized on the synthesized amine-modified zeolitic imidazolate framework-8 nanoparticles with the formation of cross-linked enzyme aggregates, and the immobilized κ-carrageenase was further characterized. The immobilized κ-carrageenase demonstrated excellent pH stability and good reusability, and exhibited higher optimal reaction temperature, better thermostability, and extended storage stability compared with the free enzyme. The KCOs produced by the immobilized κ-carrageenase could significantly decrease the TC, TG, and LDL-C levels in HepG2 cells, increase the HDL-C level in HepG2 cells, and reduce the free fatty acids level in Caco-2 cells. Biochemical assays showed that the KCOs could activate AMPK activity, increase the ratios of p-AMPK/AMPK and p-ACC/ACC, and downregulate the expression of the lipid metabolism related proteins including SREBP1 and HMGCR in the hyperlipidemic HepG2 cells. This study provides a novel and effective method for immobilization of κ-carrageenase, and the KCOs produced by the immobilized enzyme could be a potential therapeutic agent to prevent hyperlipidemia.
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Affiliation(s)
- Chunhua Zhu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Mingjing Mou
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Leilei Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Zedong Jiang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
| | - Mingjing Zheng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
| | - Zhipeng Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
| | - Tao Hong
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
| | - Hui Ni
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Xiamen Ocean Vocational College, Xiamen 361102, China
| | - Qingbiao Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China
| | - Yuanfan Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China.
| | - Yanbing Zhu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research Center of Food Biotechnology of Xiamen City, Xiamen 361021, China.
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He H, Li L, Wu Y, Zhao D, Liu J, Zhou J. Simulation insights into the lipase adsorption on zeolitic imidazolate framework-8. Colloids Surf B Biointerfaces 2023; 231:113540. [PMID: 37708590 DOI: 10.1016/j.colsurfb.2023.113540] [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: 07/06/2023] [Revised: 09/02/2023] [Accepted: 09/09/2023] [Indexed: 09/16/2023]
Abstract
Zeolitic imidazolate frameworks (ZIFs) have recently emerged as immobilization matrices for biomolecules, most notably enzymes. Understanding the key factors that dominate the enzyme's catalytic activity on/in ZIFs is crucial for the development of new immobilization matrices. In this work, a combination of the parallel tempering Monte Carlo simulation and all-atom molecular dynamics simulation is performed to study the orientation and conformation of the Candida rugose lipase (CRL) adsorbed on oppositely charged and neutral ZIF-8 (i.e., ZIF-8-COOH, ZIF-8-NH2, and ZIF-8-neutral) surfaces. The results show that CRL could adsorb on all ZIF-8 surfaces, with an ordered orientation obtained on charged ZIF-8 surfaces. ZIF-8-NH2 is a good candidate for CRL immobilization since it can maximize the catalytic activity of CRL. The native conformation of CRL is well preserved on all three surfaces due to the partially water-containing surface of ZIF-8. The results could provide theoretical support for the application of porous materials in enzyme immobilization.
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Affiliation(s)
- Haokang He
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Lin Li
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Yongsheng Wu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Daohui Zhao
- Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430205, PR China
| | - Jie Liu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, PR China.
| | - Jian Zhou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China.
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Pang W, Gao Y, Hu T, Ma X. A disposable and sensitive sensor based on a ZIF-8@graphene modified carbon paper electrode for the quantitative determination of luteolin. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4736-4743. [PMID: 37694277 DOI: 10.1039/d3ay01126g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Rapid and accurate determination of luteolin is of great significance for pharmaceutical quality control. Herein, a disposable and sensitive luteolin sensor was fabricated by a hydrothermal method with carbon paper as substrate where ZIF-8 grew on GR in situ. Notably, the large specific surface area of ZIF-8 provided active sites on the electrode surface and the ability of GR to promote electron transfer greatly improved the sensitivity towards the oxidation of luteolin. Under the optimum conditions, the ZIF-8@GR/CP showed excellent detection performance for luteolin with a linear detection range of 0.04-3.2 μM and 3.2-120 μM, with LOD of 12 nM (S/N = 3). Furthermore, this disposable and sensitive sensor was successfully applied for the quantitative detection of luteolin in a capsule of Lamiophlomis rotata.
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Affiliation(s)
- Wanyu Pang
- College of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China.
| | - Yali Gao
- College of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China.
| | - Tuoping Hu
- College of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China.
| | - Xuemei Ma
- College of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China.
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Giraldo L, Gómez-Granados F, Moreno-Piraján JC. Biodiesel Production Using Palm Oil with a MOF-Lipase B Biocatalyst from Candida Antarctica: A Kinetic and Thermodynamic Study. Int J Mol Sci 2023; 24:10741. [PMID: 37445919 DOI: 10.3390/ijms241310741] [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: 05/17/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
This research presents the results of the immobilization of Candida Antarctica Lipase B (CALB) on MOF-199 and ZIF-8 and its use in the production of biodiesel through the transesterification reaction using African Palm Oil (APO). The results show that the highest adsorption capacity, the 26.9 mg·g-1 Lipase, was achieved using ZIF-8 at 45 °C and an initial protein concentration of 1.20 mg·mL-1. The results obtained for the adsorption equilibrium studies allow us to infer that CALB was physically adsorbed on ZIF-8 while chemically adsorbed with MOF-199. It was determined that the adsorption between Lipase and the MOFs under study better fit the Sips isotherm model. The results of the kinetic studies show that adsorption kinetics follow the Elovich model for the two synthesized biocatalysts. This research shows that under the experimental conditions in which the studies were carried out, the adsorption processes are a function of the intraparticle and film diffusion models. According to the results, the prepared biocatalysts showed a high efficiency in the transesterification reaction to produce biodiesel, with methanol as a co-solvent medium. In this work, the catalytic studies for the imidazolate, ZIF-8, presented more catalytic activity when used with CALB. This system presented 95% biodiesel conversion, while the biocatalyst formed by MOF-199 and CALB generated a catalytic conversion percentage of 90%. Although both percentages are high, it should be noted that CALB-MOF-199 presented better reusability, which is due to chemical interactions.
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Affiliation(s)
- Liliana Giraldo
- Facultad de Ciencias, Departamento de Química, Universidad Nacional de Colombia, Bogotá 111231, Colombia
| | - Fernando Gómez-Granados
- Facultad de Ciencias, Departamento de Química, Universidad Nacional de Colombia, Bogotá 111231, Colombia
| | - Juan Carlos Moreno-Piraján
- Grupo de Investigación en Sólidos Porosos y Calorimetría, Facultad de Ciencias, Departamento de Química, Universidad de los Andes, Bogotá 111711, Colombia
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Arai T, Wada M, Nishiguchi H, Takimura Y, Ishii J. Inducer-free recombinant protein production in Trichoderma reesei: secretory production of endogenous enzymes and heterologous nanobodies using glucose as the sole carbon source. Microb Cell Fact 2023; 22:103. [PMID: 37208691 DOI: 10.1186/s12934-023-02109-y] [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: 03/28/2023] [Accepted: 04/28/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND The filamentous fungus Trichoderma reesei has been used as a host organism for the production of lignocellulosic biomass-degrading enzymes. Although this microorganism has high potential for protein production, it has not yet been widely used for heterologous recombinant protein production. Transcriptional induction of the cellulase genes is essential for high-level protein production in T. reesei; however, glucose represses this transcriptional induction. Therefore, cellulose is commonly used as a carbon source for providing its degraded sugars such as cellobiose, which act as inducers to activate the strong promoters of the major cellulase (cellobiohydrolase 1 and 2 (cbh1 and cbh2) genes. However, replacement of cbh1 and/or cbh2 with a gene encoding the protein of interest (POI) for high productivity and occupancy of recombinant proteins remarkably impairs the ability to release soluble inducers from cellulose, consequently reducing the production of POI. To overcome this challenge, we first used an inducer-free biomass-degrading enzyme expression system, previously developed to produce cellulases and hemicellulases using glucose as the sole carbon source, for recombinant protein production using T. reesei. RESULTS We chose endogenous secretory enzymes and heterologous camelid small antibodies (nanobody) as model proteins. By using the inducer-free strain as a parent, replacement of cbh1 with genes encoding two intrinsic enzymes (aspartic protease and glucoamylase) and three different nanobodies (1ZVH, caplacizumab, and ozoralizumab) resulted in their high secretory productions using glucose medium without inducers such as cellulose. Based on signal sequences (carrier polypeptides) and protease inhibitors, additional replacement of cbh2 with the nanobody gene increased the percentage of POI to about 20% of total secreted proteins in T. reesei. This allowed the production of caplacizumab, a bivalent nanobody, to be increased to 9.49-fold (508 mg/L) compared to the initial inducer-free strain. CONCLUSIONS In general, whereas the replacement of major cellulase genes leads to extreme decrease in the degradation capacity of cellulose, our inducer-free system enabled it and achieved high secretory production of POI with increased occupancy in glucose medium. This system would be a novel platform for heterologous recombinant protein production in T. reesei.
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Affiliation(s)
- Toshiharu Arai
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, 640‑8580, Japan.
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
| | - Mayumi Wada
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, 640‑8580, Japan
| | - Hiroki Nishiguchi
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, 640‑8580, Japan
| | - Yasushi Takimura
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, 640‑8580, Japan
| | - Jun Ishii
- Graduate School of Science, Technology and Innovation, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
- Engineering Biology Research Center, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
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Co-Immobilization of Lipases with Different Specificities for Efficient and Recyclable Biodiesel Production from Waste Oils: Optimization Using Response Surface Methodology. Int J Mol Sci 2023; 24:ijms24054726. [PMID: 36902155 PMCID: PMC10003242 DOI: 10.3390/ijms24054726] [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: 02/01/2023] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
Lipase-catalyzed transesterification is a promising and sustainable approach to producing biodiesel. To achieve highly efficient conversion of heterogeneous oils, combining the specificities and advantages of different lipases is an attractive strategy. To this end, highly active Thermomyces lanuginosus lipase (1,3-specific) and stable Burkholderia cepacia lipase (non-specific) were covalently co-immobilized on 3-glycidyloxypropyltrimethoxysilane (3-GPTMS) modified Fe3O4 magnetic nanoparticles (co-BCL-TLL@Fe3O4). The co-immobilization process was optimized using response surface methodology (RSM). The obtained co-BCL-TLL@Fe3O4 exhibited a significant improvement in activity and reaction rate compared with mono and combined-use lipases, achieving 92.9% yield after 6 h under optimal conditions, while individually immobilized TLL, immobilized BCL and their combinations exhibited yields of 63.3%, 74.2% and 70.6%, respectively. Notably, co-BCL-TLL@Fe3O4 achieved 90-98% biodiesel yields after 12 h using six different feedstocks, demonstrating the perfect synergistic effect of BCL and TLL remarkably motivated in co-immobilization. Furthermore, co-BCL-TLL@Fe3O4 could maintain 77% of initial activity after nine cycles by removing methanol and glycerol from catalyst surface, accomplished by washing with t-butanol. The high catalytic efficiency, wide substrate adaptability and favorable reusability of co-BCL-TLL@Fe3O4 suggest that it will be an economical and effective biocatalyst for further applications.
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Rodríguez Mejía Y, Romero Romero F, Basavanag Unnamatla MV, Ballesteros Rivas MF, Varela Guerrero V. Metal-Organic Frameworks as bio- and heterogeneous catalyst supports for biodiesel production. REV INORG CHEM 2022. [DOI: 10.1515/revic-2022-0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
As biodiesel (BD)/Fatty Acid Alkyl Esters (FAAE) is derived from vegetable oils and animal fats, it is a cost-effective alternative fuel that could complement diesel. The BD is processed from different catalytic routes of esterification and transesterification through homogeneous (alkaline and acid), heterogeneous and enzymatic catalysis. However, heterogeneous catalysts and biocatalysts play an essential role towards a sustainable alternative to homogeneous catalysts applied in biodiesel production. The main drawback is the supporting material. To overcome this, currently, Metal-Organic Frameworks (MOFs) have gained significant interest as supports for catalysts due to their extremely high surface area and numerous binding sites. This review focuses on the advantages of using various MOFs structures as supports for heterogeneous catalysts and biocatalysts for the eco-friendly biodiesel production process. The characteristics of these materials and their fabrication synthesis are briefly discussed. Moreover, we address in a general way basic items ranging from biodiesel synthesis to applied catalysts, giving great importance to the enzymatic part, mainly to the catalytic mechanism in esterification/transesterification reactions. We provide a summary with recommendations based on the limiting factors.
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Affiliation(s)
- Yetzin Rodríguez Mejía
- Universidad Autónoma del Estado de México, Facultad de Química , Paseo Colón esq. Paseo Tollocan s/n, 50120 , Toluca , Estado de México , CP 50120 , México
| | - Fernando Romero Romero
- Universidad Autónoma del Estado de México, Facultad de Química , Carretera Toluca-Ixtlahuaca Km. 15, Unidad el Cerrillo , Toluca , Estado de México , 50200 , México
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Carretera Toluca-Atlacomulco Km 14.5 , Toluca , Estado de México , 50200 , México
| | - Murali Venkata Basavanag Unnamatla
- Universidad Autónoma del Estado de México, Facultad de Química , Paseo Colón esq. Paseo Tollocan s/n, 50120 , Toluca , Estado de México , CP 50120 , México
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Carretera Toluca-Atlacomulco Km 14.5 , Toluca , Estado de México , 50200 , México
| | - Maria Fernanda Ballesteros Rivas
- Universidad Autónoma del Estado de México, Facultad de Química , Paseo Colón esq. Paseo Tollocan s/n, 50120 , Toluca , Estado de México , CP 50120 , México
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Carretera Toluca-Atlacomulco Km 14.5 , Toluca , Estado de México , 50200 , México
| | - Victor Varela Guerrero
- Universidad Autónoma del Estado de México, Facultad de Química , Paseo Colón esq. Paseo Tollocan s/n, 50120 , Toluca , Estado de México , CP 50120 , México
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Carretera Toluca-Atlacomulco Km 14.5 , Toluca , Estado de México , 50200 , México
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Arai T, Ichinose S, Shibata N, Kakeshita H, Kodama H, Igarashi K, Takimura Y. Inducer-free cellulase production system based on the constitutive expression of mutated XYR1 and ACE3 in the industrial fungus Trichoderma reesei. Sci Rep 2022; 12:19445. [PMID: 36376415 PMCID: PMC9663580 DOI: 10.1038/s41598-022-23815-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
Trichoderma reesei is a widely used host for producing cellulase and hemicellulase cocktails for lignocellulosic biomass degradation. Here, we report a genetic modification strategy for industrial T. reesei that enables enzyme production using simple glucose without inducers, such as cellulose, lactose and sophorose. Previously, the mutated XYR1V821F or XYR1A824V was known to induce xylanase and cellulase using only glucose as a carbon source, but its enzyme composition was biased toward xylanases, and its performance was insufficient to degrade lignocellulose efficiently. Therefore, we examined combinations of mutated XYR1V821F and constitutively expressed CRT1, BGLR, VIB1, ACE2, or ACE3, known as cellulase regulators and essential factors for cellulase expression to the T. reesei E1AB1 strain that has been highly mutagenized for improving enzyme productivity and expressing a ß-glucosidase for high enzyme performance. The results showed that expression of ACE3 to the mutated XYR1V821F expressing strain promoted cellulase expression. Furthermore, co-expression of these two transcription factors also resulted in increased productivity, with enzyme productivity 1.5-fold higher than with the conventional single expression of mutated XYR1V821F. Additionally, that productivity was 5.5-fold higher compared to productivity with an enhanced single expression of ACE3. Moreover, although the DNA-binding domain of ACE3 had been considered essential for inducer-free cellulase production, we found that ACE3 with a partially truncated DNA-binding domain was more effective in cellulase production when co-expressed with a mutated XYR1V821F. This study demonstrates that co-expression of the two transcription factors, the mutated XYR1V821F or XYR1A824V and ACE3, resulted in optimized enzyme composition and increased productivity.
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Affiliation(s)
- Toshiharu Arai
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
| | - Sakurako Ichinose
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
| | - Nozomu Shibata
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
| | - Hiroshi Kakeshita
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan.
| | - Hiroshi Kodama
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
| | - Kazuaki Igarashi
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
| | - Yasushi Takimura
- Biological Science Research, Kao Corporation, 1334 Minato, Wakayama, Wakayama, 640‑8580, Japan
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Metal-organic framework as a heterogeneous catalyst for biodiesel production: A review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Kim G, Yea Y, Njaramba LK, Yoon Y, Kim S, Park CM. Synthesis, performance, and mechanisms of strontium ferrite-incorporated zeolite imidazole framework (ZIF-8) for the simultaneous removal of Pb(II) and tetracycline. ENVIRONMENTAL RESEARCH 2022; 212:113419. [PMID: 35537499 DOI: 10.1016/j.envres.2022.113419] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
In this study, strontium ferrite (SF)-incorporated zeolite imidazole framework (ZIF-8) (SFZIF-8) that can simultaneously uptake Pb(II) and tetracycline (TC) in solution was synthesized and characterized. The physicochemical properties of the as-prepared SFZIF-8 were characterized by various functional groups, higher average pore diameter (3.414 nm), and stronger negative charge (-30.5 mV). Adsorption kinetics, isotherms, effect of various water conditions including solution pH and temperature, and reusability were studied to evaluate its adsorption performance. The adsorption capacity of SFZIF-8 was compared with that of commonly used adsorbents (powder and granular activated carbon). SFZIF-8 showed much higher adsorption performance (429.6 mg/g and 433.4 mg/g for Pb(II) and TC, respectively) than powder activated carbon (129.9 mg/g and 142.0 mg/g for Pb(II) and TC, respectively) and granular activated carbon (249.3 mg/g and 263.0 mg/g for Pb(II) and TC, respectively) in Pb(II) and TC binary solutions. The SFZIF-8 adsorption behaviors for the removal of Pb(II) and TC were explained by the pseudo-first-order and Langmuir models from the adsorption kinetics and isotherm experiments, respectively. The regenerated SFZIF-8 exhibited a competitive performance even after the third cycle. These results indicate that Pb(II) and TC can be removed with SFZIF-8 via electrostatic attraction, surface complexation, hydrogen bonding, and π-π interactions. Therefore, by exhibiting effective and efficient adsorption performance, SFZIF-8 nanocomposites can be utilized as alternative and promising adsorbents for the simultaneous removal of both Pb(II) and TC.
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Affiliation(s)
- Gyuri Kim
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
| | - Yeonji Yea
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
| | - Lewis Kamande Njaramba
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA.
| | - Sewoon Kim
- Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IA, 52242, USA.
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
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Abdulmalek SA, Li K, Wang J, Ghide MK, Yan Y. Co-Immobilization of Rhizopus oryzae and Candida rugosa Lipases onto mMWCNTs@4-arm-PEG-NH 2-A Novel Magnetic Nanotube-Polyethylene Glycol Amine Composite-And Its Applications for Biodiesel Production. Int J Mol Sci 2021; 22:11956. [PMID: 34769395 PMCID: PMC8584430 DOI: 10.3390/ijms222111956] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022] Open
Abstract
This article describes the successful synthesis of a novel nanocomposite of superparamagnetic multi-walled nanotubes with a four-arm polyethylene glycol amine polymer (mMWCNTs@4-arm-PEG-NH2). This composite was then employed as a support for the covalent co-immobilization of Rhizopus oryzae and Candida rugosa lipases under appropriate conditions. The co-immobilized lipases (CIL-mMWCNTs@4-arm-PEG-NH2) exhibited maximum specific activity of 99.626U/mg protein, which was 34.5-fold superior to that of free ROL, and its thermal stability was greatly improved. Most significantly, CIL-mMWCNTs@4-arm-PEG-NH2 was used to prepare biodiesel from waste cooking oil under ultrasound conditions, and within 120 min, the biodiesel conversion rate reached 97.64%. This was due to the synergy effect between ROL and CRL and the ultrasound-assisted enzymatic process, resulting in an increased biodiesel yield in a short reaction time. Moreover, after ten reuse cycles, the co-immobilized lipases still retained a biodiesel yield of over 78.55%, exhibiting excellent operational stability that is attractive for practical applications. Consequently, the combined use of a novel designed carrier, the co-immobilized lipases with synergy effect, and the ultrasound-assisted enzymatic reaction exhibited potential prospects for future applications in biodiesel production and various industrial applications.
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Affiliation(s)
- Saadiah A. Abdulmalek
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (S.A.A.); (K.L.); (J.W.); (M.K.G.)
- Department of Biology, Faculty of Science, Sana’a University, Sana’a 1247, Yemen
| | - Kai Li
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (S.A.A.); (K.L.); (J.W.); (M.K.G.)
| | - Jianhua Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (S.A.A.); (K.L.); (J.W.); (M.K.G.)
| | - Michael Kidane Ghide
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (S.A.A.); (K.L.); (J.W.); (M.K.G.)
- Department of Biology, Eritrea Institute of Technology, Mainefhi College of Science, Mainefhi 12676, Eritrea
| | - Yunjun Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (S.A.A.); (K.L.); (J.W.); (M.K.G.)
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Shomal R, Ogubadejo B, Shittu T, Mahmoud E, Du W, Al-Zuhair S. Advances in Enzyme and Ionic Liquid Immobilization for Enhanced in MOFs for Biodiesel Production. Molecules 2021; 26:3512. [PMID: 34207684 PMCID: PMC8226643 DOI: 10.3390/molecules26123512] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/30/2021] [Accepted: 06/06/2021] [Indexed: 11/16/2022] Open
Abstract
Biodiesel is a promising candidate for sustainable and renewable energy and extensive research is being conducted worldwide to optimize its production process. The employed catalyst is an important parameter in biodiesel production. Metal-organic frameworks (MOFs), which are a set of highly porous materials comprising coordinated bonds between metals and organic ligands, have recently been proposed as catalysts. MOFs exhibit high tunability, possess high crystallinity and surface area, and their order can vary from the atomic to the microscale level. However, their catalytic sites are confined inside their porous structure, limiting their accessibility for biodiesel production. Modification of MOF structure by immobilizing enzymes or ionic liquids (ILs) could be a solution to this challenge and can lead to better performance and provide catalytic systems with higher activities. This review compiles the recent advances in catalytic transesterification for biodiesel production using enzymes or ILs. The available literature clearly indicates that MOFs are the most suitable immobilization supports, leading to higher biodiesel production without affecting the catalytic activity while increasing the catalyst stability and reusability in several cycles.
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Affiliation(s)
- Reem Shomal
- Chemical and Petroleum Engineering Department, UAE University, Al Ain 15551, United Arab Emirates; (R.S.); (B.O.); (T.S.); (E.M.)
| | - Babatunde Ogubadejo
- Chemical and Petroleum Engineering Department, UAE University, Al Ain 15551, United Arab Emirates; (R.S.); (B.O.); (T.S.); (E.M.)
| | - Toyin Shittu
- Chemical and Petroleum Engineering Department, UAE University, Al Ain 15551, United Arab Emirates; (R.S.); (B.O.); (T.S.); (E.M.)
| | - Eyas Mahmoud
- Chemical and Petroleum Engineering Department, UAE University, Al Ain 15551, United Arab Emirates; (R.S.); (B.O.); (T.S.); (E.M.)
| | - Wei Du
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
| | - Sulaiman Al-Zuhair
- Chemical and Petroleum Engineering Department, UAE University, Al Ain 15551, United Arab Emirates; (R.S.); (B.O.); (T.S.); (E.M.)
- National Water and Energy Center, UAE University, Al Ain 15551, United Arab Emirates
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Ma L, Qiu X, Li Y, Tang S, Shen W, Xing C, Kong D, Sheng J. Carboxypeptidase A immobilization with zeolitic imidazolate framework for enhancement of ochratoxin A degradation ability. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1749570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Lei Ma
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Xi Qiu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Yaqi Li
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Sheng Tang
- School of Environment and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Wei Shen
- School of Environment and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Changrui Xing
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing, People’s Republic of China
| | - Dezhao Kong
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
| | - Jianguo Sheng
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People’s Republic of China
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“Recent advances on support materials for lipase immobilization and applicability as biocatalysts in inhibitors screening methods”-A review. Anal Chim Acta 2020; 1101:9-22. [DOI: 10.1016/j.aca.2019.11.073] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/29/2019] [Accepted: 11/30/2019] [Indexed: 01/01/2023]
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Chronopoulou L, Scaramuzzo FA, Fioravanti R, di Nitto A, Cerra S, Palocci C, Fratoddi I. Noble metal nanoparticle-based networks as a new platform for lipase immobilization. Int J Biol Macromol 2020; 146:790-797. [DOI: 10.1016/j.ijbiomac.2019.10.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/24/2019] [Accepted: 10/04/2019] [Indexed: 01/29/2023]
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Zhong L, Feng Y, Wang G, Wang Z, Bilal M, Lv H, Jia S, Cui J. Production and use of immobilized lipases in/on nanomaterials: A review from the waste to biodiesel production. Int J Biol Macromol 2020; 152:207-222. [PMID: 32109471 DOI: 10.1016/j.ijbiomac.2020.02.258] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 01/19/2023]
Abstract
As a highly efficient and environmentally friendly biocatalyst, immobilized lipase has received incredible interest among the biotechnology community for the production of biodiesel. Nanomaterials possess high enzyme loading, low mass transfer limitation, and good dispersibility, making them suitable biocatalytic supports for biodiesel production. In addition to traditional nanomaterials such as nano‑silicon, magnetic nanoparticles and nano metal particles, novel nanostructured forms such as nanoflowers, carbon nanotubes, nanofibers and metal-organic frameworks (MOFs) have also been studied for biodiesel production in the recent years. However, some problems still exist that need to be overcome in achieving large-scale biodiesel production using immobilized lipase on/in nanomaterials. This article mainly presents an overview of the current and state-of-the-art research on biodiesel production by immobilized lipases in/on nanomaterials. Various immobilization strategies of lipase on various advanced nanomaterial supports and its applications in biodiesel production are highlighted. Influential factors such as source of lipase, immobilization methods, feedstocks, and production process are also critically discussed. Finally, the current challenges and future directions in developing immobilized lipase-based biocatalytic systems for high-level production of biodiesel from waste resources are also recommended.
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Affiliation(s)
- Le Zhong
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China
| | - Yuxiao Feng
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China
| | - Gaoyang Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China
| | - Ziyuan Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
| | - Hexin Lv
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China.
| | - Shiru Jia
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China
| | - Jiandong Cui
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, PR China.
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Morya R, Kumar M, Singh SS, Thakur IS. Genomic analysis of Burkholderia sp. ISTR5 for biofunneling of lignin-derived compounds. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:277. [PMID: 31788027 PMCID: PMC6880542 DOI: 10.1186/s13068-019-1606-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/29/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND Lignin is the second most abundant natural polymer on earth. Industries using lignocellulosic biomass as feedstock generate a considerable amount of lignin as a byproduct with minimal usage. For a sustainable biorefinery, the lignin must be utilized in improved ways. Lignin is recalcitrant to degradation due to the complex and heterogeneous structure. The depolymerization of lignin and its conversion into specific product stream are the major challenges associated with lignin valorization. The blend of oligomeric, dimeric and monomeric lignin-derived compounds (LDCs) generated during depolymerization can be utilized by microbes for production of bioproducts. RESULTS In the present study, a novel bacterium Burkholderia sp. strain ISTR5 (R5), a proteobacteria belonging to class betaproteobacteria, order Burkholderiales and family Burkholderiaceae, was isolated and characterized for the degradation of LDCs. R5 strain was cultured on 12 LDCs in mineral salt medium (MSM) supplemented with individual compounds such as syringic acid, p-coumaric acid, ferulic acid, vanillin, vanillic acid, guaiacol, 4-hydroxybenzoic acid, gallic acid, benzoic acid, syringaldehyde, veratryl alcohol and catechol. R5 was able to grow and utilize all the selected LDCs. The degradation of selected LDCs was monitored by bacterial growth, total organic carbon (TOC) removal and UV-Vis absorption spectra in scan mode. TOC reduction shown in the sample contains syringic acid 80.7%, ferulic acid 84.1%, p-coumaric acid 85.9% and benzoic acid 83.2%. In UV-Vis absorption spectral scan, most of the lignin-associated peaks were found at or near 280 nm wavelength in the obtained absorption spectra. Enzyme assay for the ligninolytic enzymes was also performed, and it was observed that lignin peroxidase and laccase were predominantly expressed. Furthermore, the GC-MS analysis of LDCs was performed to identify the degradation intermediates from these compounds. The genomic analysis showed the robustness of this strain and identified various candidate genes responsible for the degradation of aromatic or lignin derivatives, detoxification mechanism, oxidative stress response and fatty acid synthesis. The presence of peroxidases (13%), laccases (4%), monooxygenases (23%), dioxygenase (44%), NADPH: quinone oxidoreductases (16%) and many other related enzymes supported the degradation of LDCs. CONCLUSION Numerous pathway intermediates were observed during experiment. Vanillin was found during growth on syringic acid, ferulic acid and p-coumaric acid. Some other intermediates like catechol, acetovanillone, syringaldehyde and 3,4-dihydroxybenzaldehyde from the recognized bacterial metabolic pathways existed during growth on the LDCs. The ortho- and meta cleavage pathway enzymes, such as the catechol-1,2-dioxygenase, protocatechuate 3,4-dioxygenase, catechol-2,3-dioxygenase and toluene-2,3-dioxygenase, were observed in the genome. In addition to the common aromatic degradation pathways, presence of the epoxyqueuosine reductase, 1,2-epoxyphenylacetyl-CoA isomerase in the genome advocates that this strain may follow the epoxy Coenzyme A thioester pathway for degradation.
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Affiliation(s)
- Raj Morya
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067 India
| | - Madan Kumar
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067 India
| | - Shashi Shekhar Singh
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067 India
| | - Indu Shekhar Thakur
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067 India
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Zhang Y, Zhang X, Song J, Jin L, Wang X, Quan C. Ag/H-ZIF-8 Nanocomposite as an Effective Antibacterial Agent Against Pathogenic Bacteria. NANOMATERIALS 2019; 9:nano9111579. [PMID: 31703378 PMCID: PMC6915408 DOI: 10.3390/nano9111579] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/27/2019] [Accepted: 10/29/2019] [Indexed: 01/10/2023]
Abstract
Development of antimicrobial nanomaterials is one of the most attractive strategies for eliminating the major threat of pathogenic bacteria to public health. In this work, we developed a simple impregnation-reduction method for the synthesis of Ag-doped hierarchical ZIF-8 (Ag/H-ZIF-8) nanocomposite. The nanocomposite was characterized by several techniques and its antibacterial activity was investigated. The Ag nanoparticles are uniformly dispersed in the porous ZIF-8 with narrow size distribution. Consequently, the resulting Ag/H-ZIF-8 nanocomposite showed significantly enhanced antibacterial activities compared to the single ZIF-8 or Ag nanoparticles. Furthermore, the composite is biocompatible, because no obvious toxicity was observed on Hepatic epithelial cells. This study offers a new approach for the design of hybrid antimicrobial nanomaterials that have great potentials in practical disinfections.
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Affiliation(s)
- Yanmei Zhang
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
- Correspondence: (Y.Z.); (C.Q.)
| | - Xin Zhang
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
| | - Jie Song
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
| | - Liming Jin
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
| | - Xiaotong Wang
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
| | - Chunshan Quan
- College of Life Science, Dalian Minzu University, Economical and Technological Development Zone, Dalian 116600, China; (X.Z.); (X.W.); (J.S.); (L.J.)
- Key Laboratory of Biotechnology and Bioresources Utilization, Dalian Minzu University, Ministry of Education, Dalian 116600, China
- Correspondence: (Y.Z.); (C.Q.)
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Naseri M, Pitzalis F, Carucci C, Medda L, Fotouhi L, Magner E, Salis A. Lipase and Laccase Encapsulated on Zeolite Imidazolate Framework: Enzyme Activity and Stability from Voltammetric Measurements. ChemCatChem 2018. [DOI: 10.1002/cctc.201801293] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Maryam Naseri
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
- Department of ChemistryUniversity of Alzahra Teheran 1993891176 Iran
| | - Federica Pitzalis
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
| | - Cristina Carucci
- Department of Chemical Sciences Bernal InstituteUniversity of Limerick Limerick V94 T9PX Ireland
| | - Luca Medda
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
| | - Lida Fotouhi
- Department of ChemistryUniversity of Alzahra Teheran 1993891176 Iran
| | - Edmond Magner
- Department of Chemical Sciences Bernal InstituteUniversity of Limerick Limerick V94 T9PX Ireland
| | - Andrea Salis
- Department of Chemical and Geological SciencesUniversity of Cagliari-CSGI and CNBS Cittadella Universitaria Monserrato 09042 Italy
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