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Ran L, Lin Y, Su G, Yang Z, Teng H. Co-Immobilization of ADH and GDH on Metal-Organic-Framework: An Effective Biocatalyst for Asymmetric Reduction of Ketones. Chembiochem 2024; 25:e202400147. [PMID: 38629211 DOI: 10.1002/cbic.202400147] [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: 02/18/2024] [Revised: 04/14/2024] [Indexed: 05/22/2024]
Abstract
Chiral alcohols are not only important building blocks of various bioactive natural compounds and pharmaceuticals, but can serve as synthetic precursors for other valuable organic chemicals, thus the synthesis of these products is of great importance. Bio-catalysis represents one effective way to obtain these molecules, however, the weak stability and high cost of enzymes often hinder its broad application. In this work, we designed a biological nanoreactor by embedding alcohol dehydrogenase (ADH) and glucose dehydrogenase (GDH) in metal-organic-framework ZIF-8. The biocatalyst ADH&GDH@ZIF-8 could be applied to the asymmetric reduction of a series of ketones to give chiral alcohols in high yields (up to 99 %) and with excellent enantioselectivities (>99 %). In addition, the heterogeneous biocatalyst could be recycled and reused at least four times with slight activity decline. Moreover, E. coli containing ADH and GDH was immobilized by ZIF-8 to form biocatalyst E. coli@ZIF-8, which also exhibits good catalytic behaviours. Finally, the chiral alcohols are further converted to marketed drugs (R)-Fendiline, (S)-Rivastigmine and NPS R-568 respectively.
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Affiliation(s)
- Lu Ran
- College of Chemistry, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yu Lin
- College of Chemistry, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Guorong Su
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Zhenyan Yang
- College of Chemistry, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Huailong Teng
- College of Chemistry, Huazhong Agricultural University, Wuhan, 430070, P. R. China
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2
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Asim H, Zeidan H, Marti ME. Effective isolation of succinic acid from aqueous media with the use of anion exchange resins. RSC Adv 2024; 14:16765-16777. [PMID: 38799209 PMCID: PMC11124699 DOI: 10.1039/d4ra02110j] [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: 03/19/2024] [Accepted: 04/30/2024] [Indexed: 05/29/2024] Open
Abstract
The primary objective of this study was to examine the isolation of succinic acid (SA) from aqueous-based solutions through the utilization of adsorption and ion exchange methods. Four kinds of anion exchange resins were employed, two of which were strong basic (Lewatit M-500 and Lewatit M-600), and the other two were weak basic (Lewatit MP-64 and Lewatit MP-62). The impacts of various variables on the efficiency of the process were examined. The aqueous pH strongly influenced the separation yield. Weak basic exchangers achieved the maximum yield at pH 2.1. However, the highest performance with Lewatit M-600 and Lewatit M-500 was obtained at pH 5 and 6, respectively. The SA separation with the tested resins reached equilibrium in about an hour. The recovery data revealed consistency with the Langmuir isotherm and pseudo-second-order kinetics. Efficiency improved with resin dosage and reduced with SA concentration. It was found that weak basic anion exchange resins were more efficient than strong basic exchangers for the recovery process. Among the resins tested, Lewatit MP-62 demonstrated the highest sorption capacity of 321 mg g-1 and 97.5% yield. The performance of the system decreased with temperature for all alternatives tested; however, its impact was not notable. The isolation process had an exergonic, exothermic, and favorable character based on the thermodynamic constants. Acid-loaded resins were successfully regenerated using trimethylamine and HCl for weak and strong anion exchange resins, respectively.
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Affiliation(s)
- Hamayoun Asim
- Department of Chemical Engineering, Konya Technical University Konya Turkey +90-332-241-0635 +90-332-223-1837
- Department of Chemical Engineering, Selçuk University Konya Turkey
| | - Hani Zeidan
- Department of Chemical Engineering, Konya Technical University Konya Turkey +90-332-241-0635 +90-332-223-1837
| | - Mustafa Esen Marti
- Department of Chemical Engineering, Konya Technical University Konya Turkey +90-332-241-0635 +90-332-223-1837
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Fayyaz Z, Farrukh MA, Ul-Hamid A, Chong KK. Elucidating the structural, catalytic, and antibacterial traits of Ficus carica and Azadirachta indica leaf extract-mediated synthesis of the Ag/CuO/rGO nanocomposite. Microsc Res Tech 2024; 87:957-976. [PMID: 38174385 DOI: 10.1002/jemt.24487] [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: 06/19/2023] [Revised: 12/07/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
The present exploration demonstrates the efficient, sustainable, cost-effective, and environment-friendly green approach for the synthesis of silver (Ag)-doped copper oxide (CuO) embedded with reduced graphene oxide (rGO) nanocomposite using the green one-pot method and the green deposition method. Leaf extracts of Ficus carica and Azadirachta indica were used for both methods as reducing and capping agents. The effect of methodology and plant extract was analyzed through different characterization techniques such as UV-visible spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), x-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM). The lowest band gap of 3.0 eV was observed for the Ag/CuO/rGO prepared by the green one-pot method using F. carica. The reduction of graphene oxide (GO) and the formation of metal oxide was confirmed through functional group detection using FT-IR. Calculation of thermodynamic parameters showed that all reactions involved were nonspontaneous and endothermic which shows the stability of nanocomposites. XRD studies revealed the crystallinity, phase purity and small average crystallite size of 32.67 nm. SEM images disclosed that the morphology of the nanocomposites was spherical with agglomeration and rough texture. The particle size of the nanocomposites calculated through HRTEM was found in agreement with the XRD results. The numerous properties of the synthesized nanocomposites enhanced their potential against the degradation of methylene blue, rhodamine B, and ciprofloxacin. The highest percentage degradation of Ag/CuO/rGO was found to be 97%, synthesized using the green one-pot method with F. carica against ciprofloxacin, which might be due to the lowest band gap, delayed electron-hole pair recombination, and large surface area available. The nanocomposites were also tested against the Gram-positive and Gram-negative bacteria. RESEARCH HIGHLIGHTS: Facile synthesis of Ag/CuO/rGO nanocomposite using a green one-pot method and the green deposition method. The lowest band gap of 3.0 eV was observed for nanocomposite prepared by a green one-pot method using Ficus carica. Least average crystallite size of 32.67 nm was found for nanocomposite prepared by a green one-pot method using F. carica. Highest antibacterial and catalytic activity (97%) was obtained against ciprofloxacin with nanocomposite prepared through green one-pot method using F. carica. A mechanism of green synthesis is proposed.
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Affiliation(s)
- Zirwa Fayyaz
- Department of Chemistry, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Muhammad Akhyar Farrukh
- Department of Basic and Applied Chemistry, Faculty of Science and Technology, University of Central Punjab, Lahore, Pakistan
| | - Anwar Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Kok-Keong Chong
- Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang, Malaysia
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Li JM, Shi K, Li AT, Zhang ZJ, Yu HL, Xu JH. Development of a Thermodynamically Favorable Multi-enzyme Cascade Reaction for Efficient Sustainable Production of ω-Amino Fatty Acids and α,ω-Diamines. CHEMSUSCHEM 2024; 17:e202301477. [PMID: 38117609 DOI: 10.1002/cssc.202301477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/25/2023] [Accepted: 12/19/2023] [Indexed: 12/22/2023]
Abstract
Aliphatic ω-amino fatty acids (ω-AFAs) and α,ω-diamines (α,ω-DMs) are essential monomers for the production of nylons. Development of a sustainable biosynthesis route for ω-AFAs and α,ω-DMs is crucial in addressing the challenges posed by climate change. Herein, we constructed an unprecedented thermodynamically favorable multi-enzyme cascade (TherFavMEC) for the efficient sustainable biosynthesis of ω-AFAs and α,ω-DMs from cheap α,ω-dicarboxylic acids (α,ω-DAs). This TherFavMEC was developed by incorporating bioretrosynthesis analysis tools, reaction Gibbs free energy calculations, thermodynamic equilibrium shift strategies and cofactor (NADPH&ATP) regeneration systems. The molar yield of 6-aminohexanoic acid (6-ACA) from adipic acid (AA) was 92.3 %, while the molar yield from 6-ACA to 1,6-hexanediamine (1,6-HMD) was 96.1 %, which were significantly higher than those of previously reported routes. Furthermore, the biosynthesis of ω-AFAs and α,ω-DMs from 20.0 mM α,ω-DAs (C6-C9) was also performed, giving 11.2 mM 1,6-HMD (56.0 % yield), 14.8 mM 1,7-heptanediamine (74.0 % yield), 17.4 mM 1,8-octanediamine (87.0 % yield), and 19.7 mM 1,9-nonanediamine (98.5 % yield), respectively. The titers of 1,9-nonanediamine, 1,8-octanediamine, 1,7-heptanediamine and 1,6-HMD were improved by 328-fold, 1740-fold, 87-fold and 3.8-fold compared to previous work. Therefore, this work holds great potential for the bioproduction of ω-AFAs and α,ω-DMs.
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Affiliation(s)
- Ju-Mou Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Kun Shi
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Ai-Tao Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology School of Life Sciences, Hubei University, #368 Youyi Road, Wuhan, 430062, P.R. China
| | - Zhi-Jun Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Hui-Lei Yu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
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5
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Ma X, Li S, Tong X, Liu K. An overview on the current status and future prospects in Aspergillus cellulase production. ENVIRONMENTAL RESEARCH 2024; 244:117866. [PMID: 38061590 DOI: 10.1016/j.envres.2023.117866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023]
Abstract
Cellulase is a new research point besides glucoamylase, amylase, and protease in the enzyme industry. Cellulase can decompose lignocellulosic biomass into small-molecule sugars, which facilitates microbial utilization; thus, it has a vast market potential in the field of feed, food, energy, and chemistry. The Aspergillus was the first strain used in cellulase preparation because of its safety and non-toxicity, strong growth ability, and high enzyme yield. This review provides the latest research and advances on preparing cellulase from Aspergillus. The metabolic mechanisms of cellulase secretion by Aspergillus, the selection of fermentation substrates, the comparison of the fermentation modes, and the effect of fermentation conditions have been discussed in this review. Also, the subsequent separation and purification techniques of Aspergillus cellulase, including salting out, organic solvent precipitation, ultrafiltration, and chromatography, have been declared. Further, bottlenecks in Aspergillus cellulase preparation and corresponding feasible approaches, such as genetic engineering, mixed culture, and cellulase immobilization, have also been proposed in this review. This paper provides theoretical support for the efficient production and application of Aspergillus cellulase.
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Affiliation(s)
- Xiaoyu Ma
- China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing 100081, China
| | - Shengpin Li
- China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing 100081, China
| | - Xiaoxia Tong
- China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing 100081, China
| | - Kun Liu
- China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing 100081, China.
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6
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Thakur N, Thakur N, Kumar A, Thakur VK, Kalia S, Arya V, Kumar A, Kumar S, Kyzas GZ. A critical review on the recent trends of photocatalytic, antibacterial, antioxidant and nanohybrid applications of anatase and rutile TiO2 nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169815. [PMID: 38184262 DOI: 10.1016/j.scitotenv.2023.169815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have become a focal point of research due to their widespread daily use and diverse synthesis methods, including physical, chemical, and environmentally sustainable approaches. These nanoparticles possess unique attributes such as size, shape, and surface functionality, making them particularly intriguing for applications in the biomedical field. The continuous exploration of TiO2 NPs is driven by the quest to enhance their multifunctionality, aiming to create next-generation products with superior performance. Recent research efforts have specifically focused on understanding the anatase and rutile phases of TiO2 NPs and evaluating their potential in various domains, including photocatalytic processes, antibacterial properties, antioxidant effects, and nanohybrid applications. The hypothesis guiding this research is that by exploring different synthesis methods, particularly chemical and environmentally friendly approaches, and incorporating doping and co-doping techniques, the properties of TiO2 NPs can be significantly improved for diverse applications. The study employs a comprehensive approach, investigating the effects of nanoparticle size, shape, dose, and exposure time on performance. The synthesis methods considered encompass both conventional chemical processes and environmentally friendly alternatives, with a focus on how doping and co-doping can enhance the properties of TiO2 NPs. The research unveils valuable insights into the distinct phases of TiO2 NPs and their potential across various applications. It sheds light on the improved properties achieved through doping and co-doping, showcasing advancements in photocatalytic processes, antibacterial efficacy, antioxidant capabilities, and nanohybrid applications. The study concludes by emphasizing regulatory aspects and offering suggestions for product enhancement. It provides recommendations for the reliable application of TiO2 NPs, addressing a comprehensive spectrum of critical aspects in TiO2 NP research and application. Overall, this research contributes to the evolving landscape of TiO2 NP utilization, offering valuable insights for the development of innovative and high-performance products.
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Affiliation(s)
- Naveen Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India.
| | - Nikesh Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India
| | - Anil Kumar
- School of chemical and metallurgical engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Susheel Kalia
- Department of Chemistry, ACC Wing (Academic Block) Indian Military Academy, Dehradun, Uttarakhand 248007, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Ashwani Kumar
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Sunil Kumar
- Department of Animal Sciences, Central University of Himachal Pradesh, Kangra, Shahpur, Himachal Pradesh 176206, India
| | - George Z Kyzas
- Hephaestus Laboratory, Department of Chemistry, School of Science, International Hellenic University, Kavala, Greece.
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7
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Singh R, Singh P, Ahmad I, Alkhathami AG, Rai AK, Mishra PK, Singh RP, Srivastava N. Bionanofabrication of Cupric oxide catalyst from Water hyacinth based carbohydrate and its impact on cellulose deconstructing enzymes production under solid state fermentation. Int J Biol Macromol 2023; 252:126377. [PMID: 37595725 DOI: 10.1016/j.ijbiomac.2023.126377] [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: 11/23/2022] [Revised: 08/03/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
One of the most important properties of cellulolytic enzyme is its ability to convert cellulosic polymer into monomeric fermentable sugars which are carbohydrate by nature can efficiently convert into biofuels. However, higher production costs of these enzymes with moderate activity-based stability are the main obstacles to making cellulase-based applications sustainably viable, and this has necessitated rigorous research for the economical availability of this process. Using water hyacinth (WH) waste leaves as the substrate for cellulase production under solid state fermentation (SSF) while treating the fermentation production medium with CuO (cupric oxide oxide) bionanocatalyst have been examined as ways to make fungal cellulase production economically feasible. Herein, a sustainable green synthesis of CuO bionanocatalyst has been performed by using waste leaves of WH. Through XRD, FT-IR, SEM, and TEM analysis, the prepared CuO bionanocatalyst's physicochemical properties have been evaluated. Furthermore, the effect of CuO bionanocatalyst on the temperature stability of raw cellulases was observed, and its half-life stability was found to be up to 9 h at 65 °C. The results presented in the current investigation may have broad scope for mass trials for various industrial applications, such as cellulosic biomass conversion.
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Affiliation(s)
- Rajeev Singh
- Department of Environmental Science, Jamia Millia Islamia, (A Central University), New Delhi 110025, India
| | - Pardeep Singh
- Department of Environmental Science, PGDAV College, University of Delhi, 110007, India
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Ali G Alkhathami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - P K Mishra
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India
| | | | - Neha Srivastava
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India.
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Thakur N, Thakur N. Removal of organic dyes and free radical assay by encapsulating polyvinylpyrrolidone and Tinospora Cordifolia in dual (Co-Cu) doped TiO 2 nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 335:122229. [PMID: 37479165 DOI: 10.1016/j.envpol.2023.122229] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/16/2023] [Accepted: 07/19/2023] [Indexed: 07/23/2023]
Abstract
Aquatic pollution refers to any water that has been used and discarded in different water bodies by industrial and commercial activities which contains a wide range of toxic substances and required treatment so that water can be safely reused for various purposes. In present paper, polymer polyvinylpyrrolidone (PVP) and plant Tinospora Cordifolia (T. Cordifolia) encapsulated dual doped cobalt-copper titanium dioxide nanoparticles (Co-Cu TNPs) has been synthesized via microwave-assisted method for the degradation aquatic pollutant dyes: Methyl Orange (MO) & Methylene Blue (MB). Using the encapsulated dual doped Co-Cu TNPs, free radical assays (2,2-diphenyl-1-picrylhydrazyl: DPPH; Hydrogen peroxide: HP & Nitric oxide: NO) were also performed. Several physicochemical properties of encapsulated TNPs were examined using a variety of characterization techniques that helps in photocatalytic and antioxidant activity. The encapsulated TNPs exhibit tetragonal crystal lattice having average particles size between 25 and 38 nm with spherical shape morphology. The bandgap of encapsulated dual doped Co-Cu TNPs was found in the range of 3.25-3.29 eV. The binding of encapsulated dual doped Co-Cu TNPs were also calculated by using XPS which confirms the presence of dopants. The photocatalytic activity was performed with using control experiment and using encapsulated dual doped Co-Cu TNPs against MO and MB dyes. The results revealed that the degradation was observed up to 100% for the both MO and MB dyes. Also, antioxidant activity of encapsulated dual doped Co-Cu TNPs was observed against the DPPH, HO and NO assays.
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Affiliation(s)
- Nikesh Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh, 176041, India; Centre for Nano-Science and Technology, Career Point University, Hamirpur, Himachal Pradesh, 176041, India
| | - Naveen Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh, 176041, India; Centre for Nano-Science and Technology, Career Point University, Hamirpur, Himachal Pradesh, 176041, India.
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9
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Shanbhag AP. Stairway to Stereoisomers: Engineering Short- and Medium-Chain Ketoreductases To Produce Chiral Alcohols. Chembiochem 2023; 24:e202200687. [PMID: 36640298 DOI: 10.1002/cbic.202200687] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/14/2023] [Accepted: 01/14/2023] [Indexed: 01/15/2023]
Abstract
The short- and medium-chain dehydrogenase/reductase superfamilies are responsible for most chiral alcohol production in laboratories and industries. In nature, they participate in diverse roles such as detoxification, housekeeping, secondary metabolite production, and catalysis of several chemicals with commercial and environmental significance. As a result, they are used in industries to create biopolymers, active pharmaceutical intermediates (APIs), and are also used as components of modular enzymes like polyketide synthases for fabricating bioactive molecules. Consequently, random, semi-rational and rational engineering have helped transform these enzymes into product-oriented efficient catalysts. The rise of newer synthetic chemicals and their enantiopure counterparts has proved challenging, and engineering them has been the subject of numerous studies. However, they are frequently limited to the synthesis of a single chiral alcohol. The study attempts to defragment and describe hotspots of engineering short- and medium-chain dehydrogenases/reductases for the production of chiral synthons.
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Affiliation(s)
- Anirudh P Shanbhag
- Department of Biophysics, Molecular Biology and Bioinformatics, University of Calcutta, Kolkata, 700009, India.,Bugworks Research India Pvt. Ltd., C-CAMP, National Centre for Biological Sciences (NCBS-TIFR), Bellary Road, Bangalore, 560003, India
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10
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Bioremediation of Hazardous Wastes Using Green Synthesis of Nanoparticles. Processes (Basel) 2023. [DOI: 10.3390/pr11010141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Advanced agronomic methods, urbanisation, and industrial expansion contaminate air, water and soil, globally. Agricultural and industrial activities threaten living biota, causing biodiversity loss and serious diseases. Strategies such as bioremediation and physiochemical remediation have not been effectively beneficial at treating pollutants. Metal-based nanoparticles (NPs) such as copper, zinc, silver, gold, etc., in various nanoformulations and nanocomposites are used more and more as they effectively resist the uptake of toxic compounds via plants by facilitating their immobilisation. According to studies, bio-based NP synthesis is a recent and agroecologically friendly approach for remediating environmental waste, which is effective against carcinogens, heavy metal contamination, treating marine water polluted with excessive concentrations of phosphorus, nitrogen and harmful algae, and hazardous dye- and pesticide-contaminated water. Biogenic resources such as bacteria, fungi, algae and plants are extensively used for the biosynthesis of NPs, particularly metallic NPs. Strategies involving green synthesis of NPs are nontoxic and could be employed for commercial scale production. Here, the focus is on the green synthesis of NPs for reduction of hazardous wastes to help with the clean-up process.
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11
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Skiba M, Vorobyova V. Evaluation of antibacterial, antioxidant, photocatalytic activities of silver-decorated TiO2 comparison green and classic capping agent. APPLIED NANOSCIENCE 2023. [DOI: 10.1007/s13204-022-02748-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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12
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Islam SU, Bairagi S, Kamali MR. Review on Green Biomass-Synthesized Metallic Nanoparticles and Composites and Their Photocatalytic Water Purification Applications: Progress and Perspectives. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2023.100460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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13
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Kachhawaha K, Singh S, Joshi K, Nain P, Singh SK. Bioprocessing of recombinant proteins from Escherichia coli inclusion bodies: insights from structure-function relationship for novel applications. Prep Biochem Biotechnol 2022; 53:728-752. [PMID: 36534636 DOI: 10.1080/10826068.2022.2155835] [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] [Indexed: 12/23/2022]
Abstract
The formation of inclusion bodies (IBs) during expression of recombinant therapeutic proteins using E. coli is a significant hurdle in producing high-quality, safe, and efficacious medicines. The improved understanding of the structure-function relationship of the IBs has resulted in the development of novel biotechnologies that have streamlined the isolation, solubilization, refolding, and purification of the active functional proteins from the bacterial IBs. Together, this overall effort promises to radically improve the scope of experimental biology of therapeutic protein production and expand new prospects in IBs usage. Notably, the IBs are increasingly used for applications in more pristine areas such as drug delivery and material sciences. In this review, we intend to provide a comprehensive picture of the bio-processing of bacterial IBs, including assessing critical gaps that still need to be addressed and potential solutions to overcome them. We expect this review to be a useful resource for those working in the area of protein refolding and therapeutic protein production.
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Affiliation(s)
- Kajal Kachhawaha
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Santanu Singh
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Khyati Joshi
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
| | - Priyanka Nain
- Department of Chemical and Bimolecular Engineering, University of Delaware, Newark, DE, USA
| | - Sumit K Singh
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India
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14
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Nguyen TH, Hoang NH, Van Tran C, Nguyen PTM, Dang TD, Chung WJ, Chang SW, Nguyen DD, Senthil Kumar P, La DD. Green synthesis of a photocatalyst Ag/TiO 2 nanocomposite using Cleistocalyx operculatus leaf extract for degradation of organic dyes. CHEMOSPHERE 2022; 306:135474. [PMID: 35760139 DOI: 10.1016/j.chemosphere.2022.135474] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/03/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Green synthesis has emerged as a sustainable approach for the fabrication of nanomaterials in the last few decades. Leaf extracts have been considered low-cost and highly efficient reactants for the synthesis of nanoparticles. In this study, an aqueous extract of Cleistocalyx operculatus leaves was employed as a reductant to synthesize Ag/TiO2 nanocomposites. The morphology, structure, and interface interaction of the Ag/TiO2 nanocomposites were investigated by (i) X-ray diffraction (XRD) to determine the crystallinity, (ii) scanning electron microscopy (SEM) to determine the morphologies, (iii) energy dispersive X-ray spectroscopy (EDX) to determine the elemental composition and distribution, and (iv) diffuse reflectance spectroscopy (DRS) to understand the optical properties. The results showed that Ag nanoparticles (AgNPs) with particle sizes of 20-40 nm homogeneously covered the surface of the TiO2 nanoparticles. The green-synthesized Ag/TiO2 nanocomposite also exhibited an excellent photodegradation ability for Rhodamine B with a removal percentage up to 91.4% after 180 min of photocatalytic reaction.
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Affiliation(s)
- Tran Hung Nguyen
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi, Viet Nam
| | - Nhat Huy Hoang
- School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Viet Nam
| | - Chinh Van Tran
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi, Viet Nam
| | - P T M Nguyen
- Institute of Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam; Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Trung-Dung Dang
- School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Viet Nam.
| | - W Jin Chung
- Department of Environmental Energy Engineering, Kyonggi University, Republic of Korea
| | - S Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Republic of Korea
| | - D Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, HCM City 755414, Viet Nam.
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India.
| | - Duong Duc La
- Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi, Viet Nam.
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Samir M, Geioushy RA, El-Sherbiny S, Fouad OA. Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO 2-modified nanopigments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:72515-72527. [PMID: 35610452 PMCID: PMC9129063 DOI: 10.1007/s11356-022-20935-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
In this work, the effect of using Ag-doped TiO2 nanopigments on optical, mechanical and antimicrobial properties of coated paper was explored. Furthermore, the long-term antimicrobial activity of the coated paper was examined for up to 25 years. Titanium dioxide (TiO2) nanoparticles have been synthesized and doped with different percentages of Ag nanoparticles (Ag NPs) using a simple wet chemical approach. The Ag@TiO2 modified nanopigments were in the form of nanorods with an average size of about 20 nm as observed from TEM images. Increasing Ag content from 0.01 to 1.0% showed an increase in the mechanical properties of coated paper in terms of tensile, stretching, tensile energy absorption and burst while preserving the optical properties. Moreover, the antimicrobial inhibition activity increased with increasing the Ag content. The 1% Ag@TiO2 showed a long-lasting antimicrobial effect against Staphylococcus aureus (S. aureus) Gram-positive bacteria even after 25 years of ageing (93.4% inhibition). Investigation of reactive oxygen species (ROS) generation and reaction mechanism of antimicrobial activity over Ag/TiO2 under visible light is proposed. These results suggest that Ag/TiO2 NPs can be potentially used as a disinfection coating for paper and improving its mechanical properties.
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Affiliation(s)
- Marwa Samir
- Paper and Printing Laboratory, Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Ramadan A Geioushy
- Nanostructured Materials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R & D Institute (CMRDI), P.O. Box, 87, Helwan, 11421, Cairo, Egypt
| | - Samya El-Sherbiny
- Paper and Printing Laboratory, Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Osama A Fouad
- Nanostructured Materials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R & D Institute (CMRDI), P.O. Box, 87, Helwan, 11421, Cairo, Egypt.
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Nilavukkarasi M, Vijayakumar S, Kalaskar M, Gurav N, Gurav S, Praseetha P. Capparis zeylanica L. conjugated TiO2 nanoparticles as bio-enhancers for antimicrobial and chronic wound repair. Biochem Biophys Res Commun 2022; 623:127-132. [DOI: 10.1016/j.bbrc.2022.07.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/24/2022] [Accepted: 07/15/2022] [Indexed: 11/26/2022]
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Liu W, Wang J, Zhang H, Qi X, Du C. Transcriptome analysis of the production enhancement mechanism of antimicrobial lipopeptides of Streptomyces bikiniensis HD-087 by co-culture with Magnaporthe oryzae Guy11. Microb Cell Fact 2022; 21:187. [PMID: 36088378 PMCID: PMC9464393 DOI: 10.1186/s12934-022-01913-2] [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: 06/17/2022] [Accepted: 08/30/2022] [Indexed: 11/18/2022] Open
Abstract
The lipopeptides produced by Streptomyces bikiniensis have a significant inhibitory effect on Magnaporthe oryzae, but the low yield limits its application. In this study, the anti-M. oryzae activity of the broth of S. bikiniensis HD-087 co-cultured with M. oryzae Guy11 mycelium has risen by 41.22% compared with pure culture, and under induction conditions of adding Guy11-inducer (cell-free supernatant of M. oryzae Guy11), the activity of strain HD-087 improved 61.76%. The result proved that the enhancement effect of Guy11 on the antimicrobial activity of HD-087 was mainly related to metabolites but mycelium cells. Under optimum induction conditions, NRPS gene expression levels of HD-087 were significantly increased by induction with Guy11-inducer, the biomass of HD-087 had no significant change, but crude extract of lipopeptide (CEL) production was 107.4% higher than pure culture, and TLC result under acid hydrolysis showed that the induced culture has one component more than pure culture. To clarify the regulation mechanism of improving lipopeptide production of HD-087 with Guy11-inducer, transcriptomic analysis was performed using RNAseq to compare the induced culture and pure culture. In the induced culture, 943 genes were up-regulated, while 590 genes were down-regulated in DEGs (differentially expressed genes). KEGG results showed that the expression of genes related to amino acid synthesis, fatty acid metabolism, TCA cycle and pyruvate metabolism pathway were significantly increased. The increased expression of genes related to these metabolic pathways provided sufficient precursors for lipopeptide synthesis. Accordingly, key enzyme genes responsible for the synthesis of lipopeptides Srf and NRPS was significantly increased. Quorum sensing related genes OppA and MppA were significantly up-regulated, and then ComP was activated and promoted lipopeptide synthesis. These results provided a scientific basis for using M. oryzae to induce the increase of the production of Streptomyces lipopeptides, and also laid a foundation for further exploring the co-culture mechanisms among different genera.
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Microorganisms as New Sources of Energy. ENERGIES 2022. [DOI: 10.3390/en15176365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The use of fossil energy sources has a negative impact on the economic and socio-political stability of specific regions and countries, causing environmental changes due to the emission of greenhouse gases. Moreover, the stocks of mineral energy are limited, causing the demand for new types and forms of energy. Biomass is a renewable energy source and represents an alternative to fossil energy sources. Microorganisms produce energy from the substrate and biomass, i.e., from substances in the microenvironment, to maintain their metabolism and life. However, specialized microorganisms also produce specific metabolites under almost abiotic circumstances that often do not have the immediate task of sustaining their own lives. This paper presents the action of biogenic and biogenic–thermogenic microorganisms, which produce methane, alcohols, lipids, triglycerides, and hydrogen, thus often creating renewable energy from waste biomass. Furthermore, some microorganisms acquire new or improved properties through genetic interventions for producing significant amounts of energy. In this way, they clean the environment and can consume greenhouse gases. Particularly suitable are blue-green algae or cyanobacteria but also some otherwise pathogenic microorganisms (E. coli, Klebsiella, and others), as well as many other specialized microorganisms that show an incredible ability to adapt. Microorganisms can change the current paradigm, energy–environment, and open up countless opportunities for producing new energy sources, especially hydrogen, which is an ideal energy source for all systems (biological, physical, technological). Developing such energy production technologies can significantly change the already achieved critical level of greenhouse gases that significantly affect the climate.
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Taiwo AE, Tom-James A, Falowo OA, Okoji A, Adeyi O, Olalere AO, Eloka-Eboka A. Techno-economic analysis of Cellulase Production by Trichoderma reesei in Submerged Fermentation Processes using a Process Simulator. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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Gareev KG, Grouzdev DS, Koziaeva VV, Sitkov NO, Gao H, Zimina TM, Shevtsov M. Biomimetic Nanomaterials: Diversity, Technology, and Biomedical Applications. NANOMATERIALS 2022; 12:nano12142485. [PMID: 35889709 PMCID: PMC9316400 DOI: 10.3390/nano12142485] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 02/04/2023]
Abstract
Biomimetic nanomaterials (BNMs) are functional materials containing nanoscale components and having structural and technological similarities to natural (biogenic) prototypes. Despite the fact that biomimetic approaches in materials technology have been used since the second half of the 20th century, BNMs are still at the forefront of materials science. This review considered a general classification of such nanomaterials according to the characteristic features of natural analogues that are reproduced in the preparation of BNMs, including biomimetic structure, biomimetic synthesis, and the inclusion of biogenic components. BNMs containing magnetic, metal, or metal oxide organic and ceramic structural elements (including their various combinations) were considered separately. The BNMs under consideration were analyzed according to the declared areas of application, which included tooth and bone reconstruction, magnetic and infrared hyperthermia, chemo- and immunotherapy, the development of new drugs for targeted therapy, antibacterial and anti-inflammatory therapy, and bioimaging. In conclusion, the authors’ point of view is given about the prospects for the development of this scientific area associated with the use of native, genetically modified, or completely artificial phospholipid membranes, which allow combining the physicochemical and biological properties of biogenic prototypes with high biocompatibility, economic availability, and scalability of fully synthetic nanomaterials.
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Affiliation(s)
- Kamil G. Gareev
- Department of Micro and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia; (N.O.S.); (T.M.Z.)
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences, 194064 Saint Petersburg, Russia
- Correspondence: (K.G.G.); (M.S.)
| | - Denis S. Grouzdev
- SciBear OU, Tartu mnt 67/1-13b, Kesklinna Linnaosa, 10115 Tallinn, Estonia;
| | - Veronika V. Koziaeva
- Research Center of Biotechnology of the Russian Academy of Sciences, Institute of Bioengineering, 119071 Moscow, Russia;
| | - Nikita O. Sitkov
- Department of Micro and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia; (N.O.S.); (T.M.Z.)
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences, 194064 Saint Petersburg, Russia
| | - Huile Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China;
| | - Tatiana M. Zimina
- Department of Micro and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia; (N.O.S.); (T.M.Z.)
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences, 194064 Saint Petersburg, Russia
| | - Maxim Shevtsov
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences, 194064 Saint Petersburg, Russia
- Center of Translational Cancer Research (TranslaTUM), Klinikum Rechts der Isar, Technical University Munich, 81675 Munich, Germany
- Personalized Medicine Centre, Almazov National Medical Research Centre, 197341 Saint Petersburg, Russia
- National Center for Neurosurgery, Nur-Sultan 010000, Kazakhstan
- Correspondence: (K.G.G.); (M.S.)
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R. S, D. M, M.G. MN, N. V, N. T, Kim JW. An Investigation of Pepsin Hydrolysate of Short Antibacterial Peptides Derived from Limnospira Sp. Appl Biochem Biotechnol 2022; 194:5580-5593. [DOI: 10.1007/s12010-022-04023-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2022] [Indexed: 11/02/2022]
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22
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Lee YJ, Yi YC, Lin YC, Chen CC, Hung JH, Lin JY, Ng IS. Purification and biofabrication of 5-aminolevulinic acid for photodynamic therapy against pathogens and cancer cells. BIORESOUR BIOPROCESS 2022; 9:68. [PMID: 38647835 PMCID: PMC10992327 DOI: 10.1186/s40643-022-00557-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/03/2022] [Indexed: 11/10/2022] Open
Abstract
5-Aminolevulinic acid (5-ALA) is a non-proteinogenic amino acid which has involved in heme metabolism of organisms, and has been widely applied in agriculture, and medical fields nowadays. 5-ALA is used in the elimination of pathogens or cancer cells by photodynamic therapy (PDT) owing to the photosensitizer reaction which releases the reactive oxygen species (ROS). Currently, biofabrication of 5-ALA is regarded as the most efficient and eco-friendly approach, but the complicated ingredient of medium causes the nuisance process of purification, resulting in low recovery and high producing cost. In this study, hydrogen chloride, sodium acetate, and ammonia were examined to maximize the recovery of 5-ALA from ion-exchange chromatography (IEC), thus a 92% recovery in 1 M ammonia at pH 9.5 was obtained. Afterward, the activated carbon was used for decolorization to further remove the pigments from the eluent. Four organic solvents, i.e., diethyl ether, methanol, ethanol, and acetone were compared to extract and form 5-ALA precipitation. The purified 5-ALA was verified to eliminate 74% of A549 human lung cancer and 83% of A375 melanoma skin cancer cell. Moreover, Proteus hauseri, Aeromonas hydrophila, Bacillus cereus, and Staphylococcus aureus were killed via anti-microbial PDT with 1% 5-ALA and reached 100% killing rate at optimal condition. With the addition of 0.05% 5-ALA during the culture, the growth of microalgae Chlorella sorokiniana was improved to against a common aquatic pathogen, A. hydrophila. The broad application of 5-ALA was demonstrated in this study for the first time.
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Affiliation(s)
- Yen-Ju Lee
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Ying-Chen Yi
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chieh Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Chung Chen
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jia-Horung Hung
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Ophthalmology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jia-Yi Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - I-Son Ng
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.
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Photocatalytic degradation activity of goji berry extract synthesized silver-loaded mesoporous zinc oxide (Ag@ZnO) nanocomposites under simulated solar light irradiation. Sci Rep 2022; 12:10017. [PMID: 35705651 PMCID: PMC9200859 DOI: 10.1038/s41598-022-14117-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/03/2022] [Indexed: 12/02/2022] Open
Abstract
Different approaches have been developed for the synthesis of various nanostructured materials with unique morphologies. This study demonstrated the photocatalytic and antimicrobial abilities of silver-loaded zinc oxide nanocomposites (Ag@ZnO NCs). Initially, ZnO with a unique mesoporous ellipsoidal morphology in the size range of 0.59 ± 0.11 × 0.33 ± 0.09 µm (length × width) was synthesized using aqueous precipitation in a mild hydrothermal condition (80 °C) with the aqueous fruit extract of goji berry (GB) (as an additive) and calcined in air at 200 °C/2 h and 250 °C/3 h. Powder X-ray diffraction (XRD) revealed the formation of a hexagonal phase of the wurtzite (WZ) structure. The average crystallite size of ZnO was 23.74 ± 4.9 nm as calculated using Debye–Scherrer’s equation. It also possesses higher thermal stability with the surface area, pore volume, and pore size of 11.77 m2/g, 0.027 cm3/g, and 9.52 nm, respectively. Furthermore, different mesoporous Ag@ZnO NCs loaded with face-centered cubic (fcc) silver nanoparticles (Ag NPs) in the range of 90–160 nm were synthesized by GB extract as a reducing and capping agent on the surface of ZnO after calcination in air. The immobilization of Ag NPs was confirmed by XRD, X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), FE-transmission electron microscopy (FE-TEM), and energy-dispersive X-ray spectroscopy (EDS). It was found that Ag0.2@ZnO NC (0.2 wt% of Ag) showed excellent photocatalytic degradation of both methylene blue (MB) (cationic) and congo red (CR) (anionic) dyes under simulated solar irradiation. The photocatalytic degradation of 99.3 ± 0.35% MB and 98.5 ± 1.3% CR occurred in 90 and 55 min, respectively, at room temperature by Ag0.2@ZnO NC. Besides, these NCs also showed broad-spectrum antibacterial activity against both Gram-positive and Gram-negative bacteria. The mechanistic concept of generating reactive oxygen species (ROS) by electron and hole charge (e‾/h+) carriers seems to be responsible for the photocatalytic degradation of commercial dyes and antibacterial activities by Ag@ZnO NCs. Thus, these silver-loaded mesoporous ellipsoidal ZnO NCs are promising candidates as photocatalysts for industrial/wastewater treatment as well as in antimicrobial therapeutics.
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Plasma Promotes Fungal Cellulase Production by Regulating the Levels of Intracellular NO and Ca 2. Int J Mol Sci 2022; 23:ijms23126668. [PMID: 35743111 PMCID: PMC9223429 DOI: 10.3390/ijms23126668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 12/04/2022] Open
Abstract
For the industrial-scale production of useful enzymes by microorganisms, technological development is required for overcoming a technical bottleneck represented by poor efficiency in the induction of enzyme gene expression and secretion. In this study, we evaluated the potential of a non-thermal atmospheric pressure plasma jet to improve the production efficiency of cellulolytic enzymes in Neurospora crassa, a filamentous fungus. The total activity of cellulolytic enzymes and protein concentration were significantly increased (1.1~1.2 times) in media containing Avicel 24–72 h after 2 and 5 min of plasma treatment. The mRNA levels of four cellulolytic enzymes in fungal hyphae grown in media with Avicel were significantly increased (1.3~17 times) 2–4 h after a 5 min of plasma treatment. The levels of intracellular NO and Ca2+ were increased in plasma-treated fungal hyphae grown in Avicel media after 48 h, and the removal of intracellular NO decreased the activity of cellulolytic enzymes in media and the level of vesicles in fungal hyphae. Our data suggest that plasma treatment can promote the transcription and secretion of cellulolytic enzymes into the culture media in the presence of Avicel (induction condition) by enhancing the intracellular level of NO and Ca2+.
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Cellulolytic and Xylanolytic Enzymes from Yeasts: Properties and Industrial Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123783. [PMID: 35744909 PMCID: PMC9229053 DOI: 10.3390/molecules27123783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/17/2022]
Abstract
Lignocellulose, the main component of plant cell walls, comprises polyaromatic lignin and fermentable materials, cellulose and hemicellulose. It is a plentiful and renewable feedstock for chemicals and energy. It can serve as a raw material for the production of various value-added products, including cellulase and xylanase. Cellulase is essentially required in lignocellulose-based biorefineries and is applied in many commercial processes. Likewise, xylanases are industrially important enzymes applied in papermaking and in the manufacture of prebiotics and pharmaceuticals. Owing to the widespread application of these enzymes, many prokaryotes and eukaryotes have been exploited to produce cellulase and xylanases in good yields, yet yeasts have rarely been explored for their plant-cell-wall-degrading activities. This review is focused on summarizing reports about cellulolytic and xylanolytic yeasts, their properties, and their biotechnological applications.
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Tong X, Kim EJ, Lee JK. Sustainability of in vitro light-dependent NADPH generation by the thylakoid membrane of Synechocystis sp. PCC6803. Microb Cell Fact 2022; 21:94. [PMID: 35643504 PMCID: PMC9148488 DOI: 10.1186/s12934-022-01825-1] [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: 02/13/2022] [Accepted: 05/15/2022] [Indexed: 11/30/2022] Open
Abstract
Background NADPH is used as a reductant in various biosynthetic reactions. Cell-free bio-systems have gained considerable attention owing to their high energy utilization and time efficiency. Efforts have been made to continuously supply reducing power to the reaction mixture in a cyclical manner. The thylakoid membrane (TM) is a promising molecular energy generator, producing NADPH under light. Thus, TM sustainability is of major relevance for its in vitro utilization. Results Over 70% of TMs prepared from Synechocystis sp. PCC6803 existed in a sealed vesicular structure, with the F1 complex of ATP synthase facing outward (right-side-out), producing NADPH and ATP under light. The NADPH generation activity of TM increased approximately two-fold with the addition of carbonyl cyanide-p-(trifluoromethoxy) phenylhydrazone (FCCP) or removal of the F1 complex using EDTA. Thus, the uncoupling of proton translocation from the electron transport chain or proton leakage through the Fo complex resulted in greater NADPH generation. Biosilicified TM retained more than 80% of its NADPH generation activity after a week at 30°C in the dark. However, activity declined sharply to below 30% after two days in light. The introduction of engineered water-forming NADPH oxidase (Noxm) to keep the electron transport chain of TM working resulted in the improved sustainability of NADPH generation activity in a ratio (Noxm to TM)-dependent manner, which correlated with the decrease of singlet oxygen generation. Removal of reactive oxygen species (ROS) by catalase further highlighted the sustainable NADPH generation activity of up to 80% in two days under light. Conclusion Reducing power generated by light energy has to be consumed for TM sustainability. Otherwise, TM can generate singlet oxygen, causing oxidative damage. Thus, TMs should be kept in the dark when not in use. Although NADPH generation activity by TM can be extended via silica encapsulation, further removal of hydrogen peroxide results in an improvement of TM sustainability. Therefore, as long as ROS formation by TM in light is properly handled, it can be used as a promising source of reducing power for in vitro biochemical reactions. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12934-022-01825-1.
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Bio-inspired Synthesis of Metal and Metal Oxide Nanoparticles: The Key Role of Phytochemicals. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02276-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Phytofabrication of titanium-silver alloy nanoparticles (Ti-AgNPs) by Cola nitida for biomedical and catalytic applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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29
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Rudenko AY, Mariasina SS, Sergiev PV, Polshakov VI. Analogs of S-Adenosyl-L-Methionine in Studies of Methyltransferases. Mol Biol 2022; 56:229-250. [PMID: 35440827 PMCID: PMC9009987 DOI: 10.1134/s002689332202011x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 01/02/2023]
Abstract
Methyltransferases (MTases) play an important role in the functioning of living systems, catalyzing the methylation reactions of DNA, RNA, proteins, and small molecules, including endogenous compounds and drugs. Many human diseases are associated with disturbances in the functioning of these enzymes; therefore, the study of MTases is an urgent and important task. Most MTases use the cofactor S‑adenosyl‑L‑methionine (SAM) as a methyl group donor. SAM analogs are widely applicable in the study of MTases: they are used in studies of the catalytic activity of these enzymes, in identification of substrates of new MTases, and for modification of the substrates or substrate linking to MTases. In this review, new synthetic analogs of SAM and the problems that can be solved with their usage are discussed.
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Affiliation(s)
- A. Yu. Rudenko
- Faculty of Fundamental Medicine, Moscow State University, 119991 Moscow, Russia
- Zelinsky Institute of Organic Chemistry, 119991 Moscow, Russia
| | - S. S. Mariasina
- Faculty of Fundamental Medicine, Moscow State University, 119991 Moscow, Russia
- Institute of Functional Genomics, Moscow State University, 119991 Moscow, Russia
| | - P. V. Sergiev
- Institute of Functional Genomics, Moscow State University, 119991 Moscow, Russia
| | - V. I. Polshakov
- Faculty of Fundamental Medicine, Moscow State University, 119991 Moscow, Russia
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Das G, Shin HS, Patra JK. Multitherapeutic Efficacy of Curly Kale Extract Fabricated Biogenic Silver Nanoparticles. Int J Nanomedicine 2022; 17:1125-1137. [PMID: 35313460 PMCID: PMC8934171 DOI: 10.2147/ijn.s308478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/25/2021] [Indexed: 01/02/2023] Open
Abstract
Purpose Due to the biomedical applications universally, the Ag nanoparticles are one of the most commonly investigated nanoparticles (NPs). Curly kale (BroL) leaves contain numerous beneficial nutrients and phytochemicals. The aim of the current study is the fabrication of the Ag nanoparticles using the extracts of curly kale and to investigate their biological potentials. Methods The characterization of the generated BroLAgNPs was done through UV-Vis spectro study, Fourier-transform infrared spectro study, scanning electron microscope analysis, energy-dispersive X-ray study, distribution of size and zeta potential investigation, and X-ray powder diffraction study, and their biological effects were evaluated by antidiabetic, antioxidant, antibacterial and cytotoxicity effect. Results BroL-Ag nanoparticle displayed surface plasmon resonance at 432 nm. The Zeta potential of BroL (−26.6) AgNPs displayed a highly negative charge. In antidiabetic assay, BroL-AgNPs was highly effective with IC50 value 2.29 µg/mL at 1.0 µg/mL concentration. In cytotoxicity assay, BroL-AgNPs displayed strong activity at 10.0 µg/mL concentration. It showed inhibitory action against three food-borne pathogenic bacteria (9.29–11.44 mm inhibition zone) and displayed moderate antioxidant potential. Conclusion This study as a whole report an eco-friendly green synthesis of AgNPs using leafy vegetable aqueous extract and its multi-biological effects which could serve as a promising candidate in pharmacological and related industries.
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Affiliation(s)
- Gitishree Das
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
- Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
| | - Han-Seung Shin
- Department of Food Science and Biotechnology, Dongguk University‐Seoul, Gyeonggi‐do, Republic of Korea
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
- Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Gyeonggi-do, Republic of Korea
- Correspondence: Jayanta Kumar Patra Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Gyeonggi-do, 10326, Republic of KoreaTel +82-31-961-5625 Email
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Recent advances in construction and regulation of yeast cell factories. World J Microbiol Biotechnol 2022; 38:57. [PMID: 35174424 DOI: 10.1007/s11274-022-03241-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/30/2022] [Indexed: 01/12/2023]
Abstract
The past decade has witnessed the rapid progress in development of synthetic biology, and advances in construction of yeast cell factories open vast opportunities for green and sustainable production of chemicals. Focusing on the progress in yeast engineering for production of plant natural products in the last 5 years, this review introduces different yeast chassis used for cell factory construction, including Saccharomyces cerevisiae, Yarrowia lipolytica and Komagataella phaffii, together with the emerging genome editing tools. The metabolic regulation strategies developed for yeast engineering are highlighted, such as subcellular pathway localization dynamic regulation, and transporter engineering. C1-based chemical bioproduction by engineered yeast is also covered. Finally, the existing challenges and future prospects in creating efficient yeast cell factories are summarized.
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Kumar V, Bahuguna A, Ramalingam S, Dhakal G, Shim JJ, Kim M. Recent technological advances in mechanism, toxicity, and food perspectives of enzyme-mediated aflatoxin degradation. Crit Rev Food Sci Nutr 2021; 62:5395-5412. [PMID: 34955062 DOI: 10.1080/10408398.2021.2010647] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Aflatoxins are carcinogenic secondary metabolites produced by Aspergillus section Flavi that contaminates a wide variety of food and feed products and is responsible for serious health and economic consequences. Fermented foods are prepared with a wide variety of substrates over a long fermentation time and are thus vulnerable to contamination by aflatoxin-producing fungi, leading to the production of aflatoxin B1. The mitigation and control of aflatoxin is currently a prime focus for developing safe aflatoxin-free food. This review summarizes the role of major aflatoxin-degrading enzymes such as laccase, peroxidase, and lactonase, and microorganisms in the context of their application in food. A putative mechanism of enzyme-mediated aflatoxin degradation and toxicity evaluation of the degraded products are also extensively discussed to evaluate the safety of degradation processes for food applications. The review also describes aflatoxin-degrading microorganisms isolated from fermented products and investigates their applicability in food as aflatoxin preventing agents. Furthermore, a summary of recent technological advancements in protein engineering, nanozymes, in silico and statistical optimization approaches are explored to improve the industrial applicability of aflatoxin-degrading enzymes.
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Affiliation(s)
- Vishal Kumar
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Ashutosh Bahuguna
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Srinivasan Ramalingam
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Ganesh Dhakal
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Jae-Jin Shim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Myunghee Kim
- Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
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Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Lv Y, Jiang Y, Lu J, Gao H, Dong W, Zhou J, Zhang W, Xin F, Jiang M. Comprehensive evaluation for the one-pot biosynthesis of butyl acetate by using microbial mono- and co-cultures. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:203. [PMID: 34656153 PMCID: PMC8520270 DOI: 10.1186/s13068-021-02053-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Butyl acetate has shown wide applications in food, cosmetics, medicine, and biofuel sectors. These short-chain fatty acid esters can be produced by either chemical or biological synthetic process with corresponding alcohols and acids. Currently, biosynthesis of short chain fatty acid esters, such as butyl butyrate, through microbial fermentation systems has been achieved; however, few studies regarding biosynthesis of butyl acetate were reported. RESULTS In this study, three proof-of-principle strategies for the one-pot butyl acetate production from glucose through microbial fermentation were designed and evaluated. (1) 7.3 g/L of butyl acetate was synthesized by butanol-producing Clostridium acetobutylicum NJ4 with the supplementation of exogenous acetic acid; (2) With the addition of butanol, 5.76 g/L of butyl acetate can be synthesized by acetate-producing Actinobacillus succinogenes130z (ΔpflA); (3) Microbial co-culture of C. acetobutylicum NJ4 and A. succinogenes130z (ΔpflA) can directly produce 2.2 g/L of butyl acetate from glucose by using microbial co-culture system with the elimination of precursors. Through the further immobilization of A. succinogenes130z (ΔpflA), butyl acetate production was improved to 2.86 g/L. CONCLUSION Different microbial mono- and co-culture systems for butyl acetate biosynthesis were successfully constructed. These strategies may be extended to the biosynthesis of a wide range of esters, especially to some longer chain ones.
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Affiliation(s)
- Yang Lv
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Yujia Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China.
| | - Jiasheng Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Hao Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Jie Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Wenming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China.
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, People's Republic of China.
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China.
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, People's Republic of China.
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, People's Republic of China
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Maleki P, Nemati F, Gholoobi A, Hashemzadeh A, Sabouri Z, Darroudi M. Green facile synthesis of silver-doped cerium oxide nanoparticles and investigation of their cytotoxicity and antibacterial activity. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108762] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Yusuf A, Al Jitan S, Garlisi C, Palmisano G. A review of recent and emerging antimicrobial nanomaterials in wastewater treatment applications. CHEMOSPHERE 2021; 278:130440. [PMID: 33838416 DOI: 10.1016/j.chemosphere.2021.130440] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/23/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
In this paper, we present a critical review on antimicrobial nanomaterials with demonstrated potential for application as a disinfection technology in wastewater treatment. Studies involving fabrication and testing of antimicrobial nanomaterials for wastewater treatment were gathered, critically reviewed, and analyzed. Our review shows that there are only a few eligible candidate nanoparticles (NPs) (metal and metal oxide) that can adequately serve as an antimicrobial agent. Nanosilver (nAg) was the most studied and moderately understood metal NPs with proven antimicrobial activity followed by ZnO (among antimicrobial metal oxide NPs) which outperformed titania (in the absence of light) in efficacy due to its better solubility in aqueous condition. The direction of future work was found to be in the development of antimicrobial nanocomposites, since they provide more stability for antimicrobial metal and metal oxides NPs in water, thereby increasing their activity. This review will serve as an updated survey, yet touching also the fundamentals of the antimicrobial activity, with vital information for researchers planning to embark on the development of superior antimicrobial nanomaterials for wastewater treatment applications.
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Affiliation(s)
- Ahmed Yusuf
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Membrane and Advanced Water Technology, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Samar Al Jitan
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Corrado Garlisi
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Giovanni Palmisano
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Membrane and Advanced Water Technology, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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Moreira RC, Oliveira JH, Libel GP, Amaral PE, Pereira EC, Siqueira VL, Grassi MF, Radovanovic E. Modified polystyrene spheres/graphene oxide decorated with silver nanoparticles as bactericidal material. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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