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Zhang B, Duan G, Qin Q, Li S, Zhou W, Zhang C, Jiang S. Advanced wood-inorganic composites: preparation, properties and perspectives. MATERIALS HORIZONS 2025; 12:2503-2523. [PMID: 39849919 DOI: 10.1039/d4mh01475h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2025]
Abstract
In recent years, the widespread use of wood products has been observed in many fields. Wooden products have excellent green and environmentally friendly characteristics, but their performance often cannot meet people's needs. Many researchers have conducted in-depth research on wood-based composite materials and their modification methods in order to improve the performance of wood. This article provides a selective review of the types, modification methods, and properties of inorganic modifiers. The preparation methods are mainly divided into immersion methods, sol-gel methods, and hydrothermal synthesis. The flame retardancy, mechanical properties, hydrophobicity, and mold resistance of modified wood have been effectively improved. In addition, modified wood also has photoresponsive properties, electrical conductivity, and thermal conductivity. Finally, the challenges and perspectives on advanced wood-inorganic composites have been proposed for guiding future studies.
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Affiliation(s)
- Bingqian Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Gaigai Duan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Qin Qin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Shanshan Li
- College of Pharmacy, Southwest Minzu University, Chengdu 610000, China.
| | - Wei Zhou
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, China
| | - Chunmei Zhang
- Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Shaohua Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
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Selim S, Almuhayawi MS, Alruhaili MH, Tarabulsi MK, Saddiq AA, Elamir MYM, Amin MA, Al Jaouni SK. Pharmacological applications and plant stimulation under sea water stress of biosynthesis bimetallic ZnO/MgO NPs. Sci Rep 2025; 15:5263. [PMID: 39939660 PMCID: PMC11822065 DOI: 10.1038/s41598-025-87881-0] [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: 10/06/2024] [Accepted: 01/22/2025] [Indexed: 02/14/2025] Open
Abstract
The uniqueness and novelty of this study lies in the ability of Mentha longifolia leaves extract (MLLE) to synthesize bimetallic NPs (NPs) of zinc oxide and magnesium oxide as nanocomposite (ZnO/MgO NPs) for the first time. Medicinal plants extracts are a more environmentally friendly method of creating NPs than physical or chemical methods. The specific objectives of the research were employed this nanocomposite compared to plant extract as antibacterial, anti-diabetic, antioxidant agents. Also, the possibility of using this nanocomposite as plant stimulator for reducing saline water stress on economic plants to cope with the scarcity of freshwater in the agricultural sector. In comparison to nanocomposite, MLLE exhibited high inhibition zones 28 ± 0.1, 26 ± 0.2, 26 ± 0.1, 25 ± 0.2, 25 ± 0.1 and 24 ± 0.1 mm in medium inoculated by E. faecalis, E. coli, S. typh, M. circinelloid C. albicans, and S. aureus, respectively. It was shown from the DPPH data that ZnO/MgO NPs' IC50 value (52.55 ± 0.98 µg/mL) was lower than the extract's (299.27 ± 1.59 µg/mL) when compared to ascorbic (195.15 ± 1.63 µg/mL). Compared to acarbose, ZnO/MgO NPs exhibited superior activity against α-Amylase inhibition percentage, as evidenced by their IC50 value of 117.02 ± 0.56 µg/mL. In contrast to ZnO/MgO NPs, acarbose had a lower IC50 value of 22.15 ± 0.76 µg/mL. ZnO/MgO NPs were added to the soil cultivated by cucumber plants (A pots experiment) at quantities of 0, 200, and 400 mg/kg. Bimetallic ZnO/MgO NPs, particularly at 200 ppm, improved the shoot and root lengths and fresh weight of shoot, but they also seemed to reduce the level stress indicator of MDA, H2O2, and antioxidant enzymes (peroxidase and polyphenol oxidase). As a result, ZnO/MgO NPs may be employed as a unique approach to boost plant growth under salinity stress.
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Affiliation(s)
- Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, 72388, Sakaka, Saudi Arabia.
| | - Mohammed S Almuhayawi
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Mohammed H Alruhaili
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
- Special Infectious Agents Unit, King Fahad Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Muyassar K Tarabulsi
- Department of Basic Medical Sciences, College of Medicine, University of Jeddah, Jeddah, Saudi Arabia
| | - Amna A Saddiq
- Department of Biological Sciences, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Mohammed Yagoub Mohammed Elamir
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, 72388, Sakaka, Saudi Arabia
| | - Mohamed A Amin
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.
| | - Soad K Al Jaouni
- Department of Hematology/Oncology, Yousef Abdulatif Jameel Scientific Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
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Fahim F, Imran M, Ramzan M, Nazeer Z, Ali A, Iqbal HMN. Catalytic-assisted remediation and phytotoxicity evaluations of organic pollutants in the presence of metal-doped Bi 2O 3-based NPs catalyst. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2025; 374:123968. [PMID: 39765059 DOI: 10.1016/j.jenvman.2024.123968] [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: 05/31/2024] [Revised: 12/24/2024] [Accepted: 12/28/2024] [Indexed: 01/29/2025]
Abstract
The chemical co-precipitation method was used to synthesize a variety of pure Bi2O3 and substituted Bi2-2xCoxCdxO3 NPs (x = 0.0-0.8) and doping influences were evaluated based on the optical, photocatalytic, morphological, and structural characteristics. Powder X-ray diffraction (PXRD), scanning electron microscope (SEM), Energy dispersive X-ray (EDX), Fourier-transform infrared spectroscopy (FTIR), and UV-visible techniques were used to explore the characteristics of the synthesized Bi2O3-based NPs. XRD measurements confirmed the monoclinic structure and a P21/c space group, whereas the particle size was between 22 and 41 nm. The SEM analysis gives the morphology of the synthesized NPs that were diverse and agglomerated platelets, whereas the EDX measurements provide the presence of Co and Cd in Bi2-2xCoxCdxO3 NPs. Additionally, FTIR investigations confirmed the existence of functional groups in Bi2-2xCoxCdxO3 NPs. The ultraviolet-visible absorbance region displaying a considerable red shift allowed for tuning of the band gap from 2.64 to 2.37eV. By analyzing the degradation of Reactive Black 5 (RB-5) dye in the presence of sunlight, pure Bi2O3 NPs showed 65.04% whereas the substituted Bi2-2xCoxCdxO3 NPs demonstrated enhanced photodegradation (86.40%) in 105 min. For the degradation of RB-5 dye, the effects of catalyst dosage, dye concentration, and pH variations were studied as well. The phytotoxicity experiment was also performed by comparing the germination of Triticum aestivum seeds in treated and untreated RB-5 dye. In the untreated dye solution, seed germination was 50% inhibited, and in the treated dye solution, germination was observed to be 80%. Additionally, recycling investigations were used to confirm the stability of these fabricated nanoparticles, and the results showed that nanomaterials exhibited significant stability and reusability. Co and Cd-doped Bi2O3 NPs are promising solar-active photocatalysts for dye removal from wastewater applications because of their improved photocatalytic activity and narrow bandgap.
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Affiliation(s)
- Farah Fahim
- Institute of Chemistry, Baghdad Ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muhammad Imran
- Institute of Chemistry, Baghdad Ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Muhammad Ramzan
- Institute of Physics, Baghdad Ul Jadeed Campus, The Islamia University of Bahawlpur, 63100, Pakistan
| | - Zarish Nazeer
- Institute of Chemistry, Baghdad Ul Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Awais Ali
- Department of Physics, COMSATS University, Park Road, Islamabad, 45550, Pakistan
| | - Hafiz M N Iqbal
- Universidad Autónoma de Nuevo León, Facultad de Agronomía, Laboratorio de Ciencias Naturales, General Escobedo, 66050, Nuevo Leon, Mexico.
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Awlqadr FH, Altemimi AB, Qadir SA, Hama Salih TA, Alkanan ZT, AlKaisy QH, Mohammed OA, Hesarinejad MA. Emerging trends in nano-sensors: A new frontier in food safety and quality assurance. Heliyon 2025; 11:e41181. [PMID: 39807502 PMCID: PMC11728908 DOI: 10.1016/j.heliyon.2024.e41181] [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: 08/15/2024] [Revised: 12/06/2024] [Accepted: 12/11/2024] [Indexed: 01/16/2025] Open
Abstract
The rapid evolution of nanotechnology has catalyzed significant advancements in the design and application of nano-sensors, particularly within the food industry, where ensuring safety and quality is of paramount concern. This review explores the multifaceted role of nano-sensors constructed from diverse nanomaterials in detecting foodborne pathogens and toxins, offering a comprehensive analysis of their operational principles, sensitivity, and specificity. Nano-sensors leverage unique physical and chemical properties at the nanoscale to enhance the detection of microbial contamination, actively contributing to food safety protocols. With applications ranging from real-time monitoring of pathogenic bacteria, such as Escherichia coli and Salmonella, to assessing environmental factors affecting food quality, these innovative devices demonstrate unparalleled advantages over conventional detection methods. Recent research illustrates the integration of nano-sensors with biosensing techniques, enabling multiplex analysis and rapid detection. Furthermore, the review addresses current challenges in the commercialization and regulatory landscape of nano-sensor technology, emphasizing the need for ongoing research to optimize their performance and facilitate widespread adoption in food safety systems. Overall, the incorporation of nano-sensors represents a transformative approach to safeguarding public health by proactively managing food safety risks and enhancing the efficiency of food quality assurance processes.
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Affiliation(s)
- Farhang Hameed Awlqadr
- Food Science and Quality control, Halabja Technical College of Applied Science, Sulaimani Polytechnic University, Sulaymaniyah, Iraq
| | - Ammar B. Altemimi
- Food Science Department, College of Agriculture, University of Basrah, 61004, Iraq
- College of Medicine, University of Warith Al-Anbiyaa, Karbala, Iraq
| | - Syamand Ahmed Qadir
- Medical Laboratory Techniques Department, Halabja Technical Institute, Research center/Sulaimani Polytechnic University, Sulaymaniyah, Iraq
| | - Tablo Azad Hama Salih
- Food Science and Quality control, Halabja Technical College of Applied Science, Sulaimani Polytechnic University, Sulaymaniyah, Iraq
| | - Zina T. Alkanan
- Food Science Department, College of Agriculture, University of Basrah, 61004, Iraq
| | - Qausar Hamed AlKaisy
- Department of Dairy Science and technology, College of Food science, Al-Qasim Green University, Iraq
| | - Othman Abdulrahman Mohammed
- Medical Laboratory Science Department, Halabja Technical College of Applied Sciences, Sulaimani Polytechnic, Iraq
| | - Mohammad Ali Hesarinejad
- Department of Food Sensory and Cognitive Science, Research Institute of Food Science and Technology (RIFST), Mashhad, Iran
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Manoudis PN, Zuburtikudis I, Konstantopoulos G, Khalifeh HA, Kottaridi C, Karapanagiotis I. Superhydrophobicity, Photocatalytic Self-Cleaning and Biocidal Activity Combined in a Siloxane-ZnO Composite for the Protection of Limestone. Biomimetics (Basel) 2024; 9:573. [PMID: 39329595 PMCID: PMC11429561 DOI: 10.3390/biomimetics9090573] [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: 07/14/2024] [Revised: 09/05/2024] [Accepted: 09/19/2024] [Indexed: 09/28/2024] Open
Abstract
The erosion phenomena of the natural stone in cultural heritage are induced by various sources. Consequently, the development of multifunctional protective materials that combine two or more useful properties is an effective strategy in addressing the synergistic effects of various erosion mechanisms. A multifunctional coating, consisting of a silane-based precursor and zinc oxide (ZnO) nanoparticles (NPs), is produced and tested for the protection of limestone. The hybrid coating combines the following three properties: superhydrophobicity, including water-repellency, photocatalytic self-cleaning and biocidal activity. The relative concentration of the NPs (0.8% w/w), used for the suggested composite coating, is carefully selected according to wetting studies, colourimetric measurements and durability (tape peeling) tests. The non-wetting state is evidenced on the surface of the composite coating by the large contact angle of water drops (≈153°) and the small contact angle hysteresis (≈5°), which gives rise to a physical self-cleaning scenario (lotus effect). The photocatalytic chemical self-cleaning is shown with the removal of methylene blue, induced by UV-A radiation. Moreover, it is shown that the suggested coating hinders the incubation of E. coli and S. aureus, as the inhibitions are 94.8 and 99.9%, respectively. Finally, preliminary studies reveal the chemical stability of the suggested coating.
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Affiliation(s)
| | - Ioannis Zuburtikudis
- Department of Chemical Engineering, Abu Dhabi University (ADU), Abu Dhabi P.O. Box 59911, United Arab Emirates
| | | | - Hadil Abu Khalifeh
- Department of Chemical Engineering, Abu Dhabi University (ADU), Abu Dhabi P.O. Box 59911, United Arab Emirates
| | - Christine Kottaridi
- School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Gatou MA, Skylla E, Dourou P, Pippa N, Gazouli M, Lagopati N, Pavlatou EA. Magnesium Oxide (MgO) Nanoparticles: Synthetic Strategies and Biomedical Applications. CRYSTALS 2024; 14:215. [DOI: 10.3390/cryst14030215] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2025]
Abstract
In recent times, there has been considerable interest among researchers in magnesium oxide (MgO) nanoparticles, due to their excellent biocompatibility, stability, and diverse biomedical uses, such as antimicrobial, antioxidant, anticancer, and antidiabetic properties, as well as tissue engineering, bioimaging, and drug delivery applications. Consequently, the escalating utilization of magnesium oxide nanoparticles in medical contexts necessitates the in-depth exploration of these nanoparticles. Notably, existing literature lacks a comprehensive review of magnesium oxide nanoparticles’ synthesis methods, detailed biomedical applications with mechanisms, and toxicity assessments. Thus, this review aims to bridge this gap by furnishing a comprehensive insight into various synthetic approaches for the development of MgO nanoparticles. Additionally, it elucidates their noteworthy biomedical applications as well as their potential mechanisms of action, alongside summarizing their toxicity profiles. This article also highlights challenges and future prospects for further exploring MgO nanoparticles in the biomedical field. Existing literature indicates that synthesized magnesium oxide nanoparticles demonstrate substantial biocompatibility and display significant antibacterial, antifungal, anticancer, and antioxidant properties. Consequently, this review intends to enhance readers’ comprehension regarding recent advancements in synthesizing MgO nanoparticles through diverse approaches and their promising applications in biomedicine.
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Affiliation(s)
- Maria-Anna Gatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
| | - Eirini Skylla
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
| | - Panagiota Dourou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
| | - Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
| | - Nefeli Lagopati
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Evangelia A. Pavlatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15772 Athens, Greece
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De la Rosa-García S, Sierra-Fernández A, Solís CG, García NS, Quintana P, Gómez-Cornelio S, Fort R. Fungal community dynamics on limestone at the Chichén Itzá archaeological site in Mexico driven by protective treatments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167563. [PMID: 37802337 DOI: 10.1016/j.scitotenv.2023.167563] [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: 02/23/2023] [Revised: 09/26/2023] [Accepted: 10/01/2023] [Indexed: 10/08/2023]
Abstract
Microorganisms naturally colonize rock-based materials in outdoor environments, thereby contributing to their degradation. Fungi, especially in tropical environments with abundant water and favorable temperatures, play a significant role in biodegradation. However, many aspects of the microorganism-stone interaction, including fungal colonization dynamics and the impact of treatment applications, remain unclear. This study conducted a four-year in-situ evaluation of fungal community dynamics on limestone surfaces in the Temple of the Warriors at the Chichén Itzá archaeological site in Mexico, focusing on cleaning and treatment using nanoparticles (NPs). These NPs included zinc oxide (ZnO) and CaZn2(OH)6·2H2O (CZ)-based NPs synthesized via sol-gel (CZ-SG) and mechanochemical methods (CZ-MC), as well as CZ/Ca(OH)2-based products (CZ:Ca-SG). The microbial colonization cover was assessed using colorimetric measurements, and the surface was sampled for fungal community isolation and identification. The results demonstrated significant impacts of cleaning and nanomaterial applications on cultivable fungal communities (melanized filamentous, hyaline, and microcolonial fungi), altering composition, dynamics, and stone surface coloration. In particular, ZnO NPs caused 50 % decline in fungal species and individuals, whereas CZ:Ca-SG NPs displaced most species, indicating effective inhibition of the cultivable fungal community. Microcolonial fungi (MCF), known for their tolerance to withstand harsh environmental conditions, were the only fungal group found in the CZ:Ca-SG treatment. In contrast, CZ-SG and CZ-MC increased the abundance of melanized species, resulting in darkening and reduced color intensity. This study highlights the importance of microcolonial fungi that are tolerant to cleaning and coating procedures in the preservation of stone cultural heritage. These findings enhance our understanding of fungal colonization dynamics following treatment and provide valuable insights into the challenges associated with preserving stone materials in tropical environments.
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Affiliation(s)
- Susana De la Rosa-García
- Laboratorio de Microbiología Aplicada, División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, 0.5 km Carretera Villahermosa-Cárdenas, Villahermosa 86000, Tabasco, Mexico.
| | | | - Claudia García Solís
- Sección de Conservación y Restauración, Centro INAH-Yucatán, Calle 10 No. 310-A, Col. Gonzalo Guerrero, 97310 Mérida, Yucatán, Mexico
| | - Neftalí Soberanes García
- Universidad Politécnica del Centro, Km. 22.5 Carretera Federal Villahermosa-Teapa, Tumbulushal, Centro, 86290 Villahermosa, Tabasco, Mexico
| | - Patricia Quintana
- Laboratorio Nacional de Nano y Biomateriales, Departamento de Física Aplicada, CINVESTAV-IPN, A.P. 73, Ciordemex, 973109 Mérida, Yucatán, Mexico
| | - Sergio Gómez-Cornelio
- Universidad Politécnica del Centro, Km. 22.5 Carretera Federal Villahermosa-Teapa, Tumbulushal, Centro, 86290 Villahermosa, Tabasco, Mexico; Laboratorio de Nanotecnología-CICTAT, División Académica de Ingeniería y Arquitectura, Universidad Juárez Autónoma de Tabasco, Carr. Cunduacán-Jalpa de Méndez, Km 1, Cunduacán, Tabasco 86690, Mexico
| | - Rafael Fort
- Instituteo de Geociencias (CSIC, UCM), Severo Ochoa 7, CP 28040 Madrid, Spain.
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Balu SK, Andra S, Jeevanandam J, Kulabhusan PK, Khamari A, Vedarathinam V, Hamimed S, Chan YS, Danquah MK. Exploring the potential of metal oxide nanoparticles as fungicides and plant nutrient boosters. CROP PROTECTION 2023; 174:106398. [DOI: 10.1016/j.cropro.2023.106398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2025]
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Daniel AI, Keyster M, Klein A. Biogenic zinc oxide nanoparticles: A viable agricultural tool to control plant pathogenic fungi and its potential effects on soil and plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165483. [PMID: 37442458 DOI: 10.1016/j.scitotenv.2023.165483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
Fungal and bacterial pathogens represent some of the greatest challenges facing crop production globally and account for about 20-40 % crop losses annually. This review highlights the use of ZnO NPs as antimicrobial agents and explores their mechanisms of actions against disease causing plant fungal pathogens. The behavior of ZnO NPs in soil and their interactions with the soil components were also highlighted. The review discusses the potential effects of ZnO NPs on plants and their mechanisms of action on plants and how these mechanisms are related to their physicochemical properties. In addition, the reduction of ZnO NPs toxicity through surface modification and coating with silica is also addressed. Soil properties play a significant role in the dispersal, aggregation, stability, bioavailability, and transport of ZnO NPs and their release into the soil. The transport of ZnO NPs into the soil might influence soil components and, as a result, plant physiology. The harmful effects of ZnO NPs on plants and fungi are caused by a variety of processes, the most important of which is the formation of reactive oxygen species, lysosomal instability, DNA damage, and the reduction of oxidative stress by direct penetration/liberation of Zn2+ ions in plant/fungal cells. Based on these highlighted areas, this review concludes that ZnO NPs exhibit its antifungal activity via generations of reactive oxygen species, coupled with the inhibition of various metabolic pathways. Despite the numerous advantages of ZnO NPs, there is need to regulate its uses to minimize the harmful effects that may arise from its applications in the soil and plants.
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Affiliation(s)
- Augustine Innalegwu Daniel
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa; Department of Biochemistry, Federal University of Technology, P.M.B 65, Minna, Niger State, Nigeria.
| | - Marshall Keyster
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa.
| | - Ashwil Klein
- Department of Biotechnology, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa.
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Sharifi Malvajerdi S, Aboutorabi S, Shahnazi A, Gholamhosseini S, Taheri Ghahrizjani R, Yahyaee Targhi F, Erfanimanesh S, Beigverdi R, Imani A, Sari AH, Sun H, Saffarian P, Behmadi H, Nabid MR, Hosseini A, Abrari M, Ghanaatshoar M. HVHC-ESD-Induced Oxygen Vacancies: An Insight into the Phenomena of Interfacial Interactions of Nanostructure Oxygen Vacancy Sites with Oxygen Ion-Containing Organic Compounds. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48785-48799. [PMID: 37647519 DOI: 10.1021/acsami.3c10017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The challenging environmental chemical and microbial pollution has always caused issues for human life. This article investigates the detailed mechanism of photodegradation and antimicrobial activity of oxide semiconductors and realizes the interface phenomena of nanostructures with toxins and bacteria. We demonstrate how oxygen vacancies in nanostructures affect photodegradation and antimicrobial behavior. Additionally, a novel method with a simple, tunable, and cost-effective synthesis of nanostructures for such applications is introduced to resolve environmental issues. The high-voltage, high-current electrical switching discharge (HVHC-ESD) system is a novel method that allows on-the-spot sub-second synthesis of nanostructures on top and in the water for wastewater decontamination. Experiments are done on rhodamine B as a common dye in wastewater to understand its photocatalytic degradation mechanism. Moreover, the antimicrobial mechanism of oxide semiconductors synthesized by the HVHC-ESD method with oxygen vacancies is realized on methicillin- and vancomycin-resistant Staphylococcus aureus strains. The results yield new insights into how oxygen ions in dyes and bacterial walls interact with the surface of ZnO with high oxygen vacancy, which results in breaking of the chemical structure of dyes and bacterial walls. This interaction leads to degradation of organic dyes and bacterial inactivation.
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Affiliation(s)
- Shahab Sharifi Malvajerdi
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shahrzad Aboutorabi
- Department of Biology, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Azita Shahnazi
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Saeb Gholamhosseini
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | | | - Fatemeh Yahyaee Targhi
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Soroor Erfanimanesh
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, 1417613151 Tehran, Iran
| | - Reza Beigverdi
- Department of Microbiology, School of Medicine, Tehran University of Medical Sciences, 1417613151 Tehran, Iran
| | - Aref Imani
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
- Institute of Photonics, TU Wien, Gusshausstrasse, 27/3/387/ Vienna, Austria
| | - Amir Hossein Sari
- Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Haiding Sun
- School of Microelectronics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Parvaneh Saffarian
- Department of Biology, Science and Research Branch, Islamic Azad University, 1477893855 Tehran, Iran
| | - Homa Behmadi
- Department of Food Engineering and Postharvest Technology, Agricultural Engineering, Research Institute, Agricultural Research, Education and Extension Organization (AREEO), 3135933151 Karaj, Iran
| | - Mohammad Reza Nabid
- Department of Polymer Chemistry and Materials, Faculty of Chemistry and Petroleum Science, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Alireza Hosseini
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Masoud Abrari
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
| | - Majid Ghanaatshoar
- Laser and Plasma Research Institute, Shahid Beheshti University, 1983969411 Tehran, Iran
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Rabea A, Naeem E, Balabel NM, Daigham GE. Management of potato brown rot disease using chemically synthesized CuO-NPs and MgO-NPs. BOTANICAL STUDIES 2023; 64:20. [PMID: 37458850 DOI: 10.1186/s40529-023-00393-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/01/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Potatoes are a crucial vegetable crop in Egypt in terms of production and consumption. However, the potato industry suffers significant annual losses due to brown rot disease. This study aimed to suppress Ralstonia solanacearum (R. solanacearum), the causative agent of brown rot disease in potatoes, using efficient and economical medications such as CuO and MgO metal oxide nanoparticles, both in vitro and in vivo, to reduce the risk of pesticide residues. RESULTS CuO and MgO metal oxide nanoparticles were synthesized via a simple chemical process. The average particle size, morphology, and structure of the nanoparticles were characterized using UV-visible spectroscopy, transmission electron microscopy (TEM), zeta potential analysis, X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. The growth of R. solanacearum was strongly inhibited by CuO and MgO NPs at a concentration of 3 mg/mL, resulting in zones of inhibition (ZOI) of 19.3 mm and 17 mm, respectively. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of CuO-NPs and MgO-NPs were 0.5, 0.6, and 0.6, 0.75 mg/mL, respectively. When applied in vivo through seed dressing and tuber soaking at their respective MIC concentrations, CuO-NPs and MgO-NPs significantly reduced the incidence of brown rot disease to 71.2% and 69.4%, respectively, compared to 43.0% and 39.5% in bulk CuSO4 and bulk MgSO4 treatments, respectively. Furthermore, CuO-NPs and MgO-NPs significantly increased the yield, total chlorophyll content, and enzyme efficiency of potato plants compared with the infected control plants. TEM revealed that the bacterial cytomembrane was severely damaged by nanomechanical forces after interaction with CuO-NPs and MgO-NPs, as evidenced by lipid peroxidation and ultrastructural investigations. CONCLUSION The results of this study suggest that CuO-NPs and MgO-NPs can be used as intelligent agents to manage plant pathogens in agriculture. The use of metal oxide nanoparticles could provide a risk-free alternative for treating plant diseases, which are currently one of the biggest challenges faced by the potato industry in Egypt. The significant increase in yield, photosynthetic pigments, enzymatic activity, and total phenol-promoted resistance to R. solanacearum in potato plants treated with CuO-NPs and MgO-NPs compared to infected control plants highlights the potential benefits for the potato industry in Egypt. Further investigations are needed to explore using metal oxide nanoparticles for treating other plant diseases.
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Affiliation(s)
- Amira Rabea
- Bacterial Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza, Egypt
| | - E Naeem
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University (Girls Branch), Cairo, Egypt
| | - Naglaa M Balabel
- Bacterial Disease Research Department, Plant Pathology Research Institute, Agricultural Research Center (ARC), Giza, Egypt
- Potato Brown Rot Project, Ministry of Agriculture, Dokki, Giza, Egypt
| | - Ghadir E Daigham
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University (Girls Branch), Cairo, Egypt.
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12
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Moorthy P, Kavitha HP. Comparative Evaluation of Bioefficiency and Photocatalytic Activity of Green Synthesized Bismuth Oxide Nanoparticles Using Three Different Leaf Extracts. ACS OMEGA 2023; 8:14752-14765. [PMID: 37125094 PMCID: PMC10134460 DOI: 10.1021/acsomega.3c00792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/31/2023] [Indexed: 05/03/2023]
Abstract
Nanotechnology has emerged as a promising method for wastewater recycling. In this line, the current study emphasizes the leaf-extract-mediated biosynthesis of bismuth oxide nanostructures (BiONPs) using three different plants, namely Coldenia procumbens Linn (Creeping Coldenia), Citrus limon (Lemon), and Murraya koenigii (Curry) through a greener approach and evaluates their biological properties as well as photocatalytic performance for the first time. As-synthesized BiONPs were physiochemically characterized using UV-visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM) with energy dispersive X-ray analysis (EDAX). Using the well diffusion method, research on the antibacterial efficiency of BiONPs against human pathogenic Gram-positive bacteria, such as Staphylococcus aureus and Enterococcus faecalis, and Gram-negative bacteria, including Escherichia coli and Klebsiella pneumonia, revealed that Gram-negative bacteria exhibited relatively strong activity. The larvicidal activity assessed against Aedes aegypti and Aedes albopictus mosquito larvae reveals promising larvicidal activity with a minimal dosage of BiONPs with LC50 values of 5.53 and 19.24 ppm, respectively, after 24 h of exposure. The excellent photocatalytic activity of as-synthesized BiONPs was demonstrated through the photodegradation of malachite green (MG) and methylene blue (MB) dyes with respective degradation performance parameters of 70 and 90%. The biogenic synthetic approach reported here enables the scalable commercial synthesis of bismuth nanostructures for their widespread use in catalysis for wastewater treatment and environmental cleanup.
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13
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Gomez-Villalba LS, Salcines C, Fort R. Application of Inorganic Nanomaterials in Cultural Heritage Conservation, Risk of Toxicity, and Preventive Measures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1454. [PMID: 37176999 PMCID: PMC10180185 DOI: 10.3390/nano13091454] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 05/15/2023]
Abstract
Nanotechnology has allowed for significant progress in architectural, artistic, archaeological, or museum heritage conservation for repairing and preventing damages produced by deterioration agents (weathering, contaminants, or biological actions). This review analyzes the current treatments using nanomaterials, including consolidants, biocides, hydrophobic protectives, mechanical resistance improvers, flame-retardants, and multifunctional nanocomposites. Unfortunately, nanomaterials can affect human and animal health, altering the environment. Right now, it is a priority to stop to analyze its advantages and disadvantages. Therefore, the aims are to raise awareness about the nanotoxicity risks during handling and the subsequent environmental exposure to all those directly or indirectly involved in conservation processes. It reports the human-body interaction mechanisms and provides guidelines for preventing or controlling its toxicity, mentioning the current toxicity research of main compounds and emphasizing the need to provide more information about morphological, structural, and specific features that ultimately contribute to understanding their toxicity. It provides information about the current documents of international organizations (European Commission, NIOSH, OECD, Countries Normative) about worker protection, isolation, laboratory ventilation control, and debris management. Furthermore, it reports the qualitative risk assessment methods, management strategies, dose control, and focus/receptor relationship, besides the latest trends of using nanomaterials in masks and gas emissions control devices, discussing their risk of toxicity.
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Affiliation(s)
- Luz Stella Gomez-Villalba
- Institute of Geosciences, Spanish National Research Council, Complutense University of Madrid (CSIC, UCM), Calle Dr. Severo Ochoa 7, Planta 4, 28040 Madrid, Spain
| | - Ciro Salcines
- Infrastructures Service, Health and Safety Unit, University of Cantabria, Pabellón de Gobierno, Avenida de los Castros 54, 39005 Santander, Spain
| | - Rafael Fort
- Institute of Geosciences, Spanish National Research Council, Complutense University of Madrid (CSIC, UCM), Calle Dr. Severo Ochoa 7, Planta 4, 28040 Madrid, Spain
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14
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Mickymaray S, Al Aboody MS, Eraqi MM, Alhoqail WA, Alothaim AS, Suresh K. Biopolymer Chitosan Surface Engineering with Magnesium Oxide-Pluronic-F127-Escin Nanoparticles on Human Breast Carcinoma Cell Line and Microbial Strains. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1227. [PMID: 37049321 PMCID: PMC10097236 DOI: 10.3390/nano13071227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Nanotechnology has been recognized as a highly interdisciplinary field of the twenty-first century, with diverse applications in biotechnology, healthcare, and material science. One of the most commonly employed non-toxic nanoparticles, magnesium oxide nanoparticles (MgO NPs), is simple, inexpensive, biocompatible, and biodegradable. Several researchers are interested in the biosynthesis process of MgO NPs through chemical and physical approaches. This is because of their simplicity, affordability, and environmental safety. In the current study, green MgO-Chitosan-Pluronic F127-Escin (MCsPFE) NPs have been synthesized and characterized via various techniques like UV-visible, Fourier-transform infrared spectroscopy, Energy dispersive X-ray composition analysis, Transmission electron microscopy, field emission scanning electron microscopy, X-ray Diffraction, Photoluminescence, and Dynamic light scattering analyses. The average crystallite size of MCsPFE NPs was 46 nm, and a face-centered cubic crystalline structure was observed. Further, the antimicrobial effectiveness of NPs against diverse pathogens has been assessed. The cytotoxic potential of the nanoparticles against MDA-MB-231 cell lines was evaluated using the MTT test, dual AO/EB, JC-1, DCFH-DA, and DAPI staining procedures. High antimicrobial efficacy of MCsPFE NPs against Gram-positive and Gram-negative bacterial strains as well as Candida albicans was observed. The findings concluded that the NPs augmented the ROS levels in the cells and altered the Δψm, leading to the initiation of the intrinsic apoptotic cell death pathway. Thus, green MCsPFE NPs possess immense potential to be employed as an effective antimicrobial and anticancer treatment option.
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Affiliation(s)
- Suresh Mickymaray
- Department of Biology, College of Science, Al Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
- Centre of Molecular Medicine and Diagnostics (COMManD), Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 602105, India
| | - Mohammed Saleh Al Aboody
- Department of Biology, College of Science, Al Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Mostafa M. Eraqi
- Department of Biology, College of Science, Al Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
- Microbiology and Immunology Department, Veterinary Research Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Wardah. A. Alhoqail
- Department of Biology, College of Education, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Abdulaziz S. Alothaim
- Department of Biology, College of Science, Al Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Kaviya Suresh
- Department of Pharmaceutics, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai 600116, India
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15
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Super-efficient photocatalytic degradation of methylene blue, methyl orange and rhodamine B dyes using low-cost ZnO–MgO nanocomposite under natural sunlight and its bactericidal activity. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04985-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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16
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Girish K, Sravanthi Goud B, Naik R, Prashantha S, Nagabhushana H, R L, V Ashok Reddy G, Hong Kim J. Photoluminescence and photocatalytic properties of Zn2TiO4:Cr3+ nanophosphors. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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17
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Huang T, Li X, Maier M, O'Brien-Simpson NM, Heath DE, O'Connor AJ. Using inorganic nanoparticles to fight fungal infections in the antimicrobial resistant era. Acta Biomater 2023; 158:56-79. [PMID: 36640952 DOI: 10.1016/j.actbio.2023.01.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/20/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
Fungal infections pose a serious threat to human health and livelihoods. The number and variety of clinically approved antifungal drugs is very limited, and the emergence and rapid spread of resistance to these drugs means the impact of fungal infections will increase in the future unless alternatives are found. Despite the significance and major challenges associated with fungal infections, this topic receives significantly less attention than bacterial infections. A major challenge in the development of fungi-specific drugs is that both fungi and mammalian cells are eukaryotic and have significant overlap in their cellular machinery. This lack of fungi-specific drug targets makes human cells vulnerable to toxic side effects from many antifungal agents. Furthermore, antifungal drug resistance necessitates higher doses of the drugs, leading to significant human toxicity. There is an urgent need for new antifungal agents, specifically those that can limit the emergence of new resistant species. Non-drug nanomaterials have primarily been explored as antibacterial agents in recent years; however, they are also a promising source of new antifungal candidates. Thus, this article reviews current research on the use of inorganic nanoparticles as antifungal agents. We also highlight challenges facing antifungal nanoparticles and discuss possible future research opportunities in this field. STATEMENT OF SIGNIFICANCE: Fungal infections pose a growing threat to human health and livelihood. The rapid spread of resistance to current antifungal drugs has led to an urgent need to develop alternative antifungals. Nanoparticles have many properties that could make them useful antimycotic agents. To the authors' knowledge, there is no published review so far that has comprehensively summarized the current development status of antifungal inorganic nanomaterials, so we decided to fill this gap. In this review, we discussed the state-of-the-art research on antifungal inorganic nanoparticles including metal, metal oxide, transition-metal dichalcogenides, and inorganic non-metallic particle systems. Future directions for the design of inorganic nanoparticles with higher antifungal efficacy and lower toxicity are described as a guide for further development in this important area.
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Affiliation(s)
- Tao Huang
- Department of Biomedical Engineering, Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Xin Li
- Department of Biomedical Engineering, Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Michael Maier
- Department of Biomedical Engineering, Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Neil M O'Brien-Simpson
- ACTV Research Group, Melbourne Dental School and The Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Daniel E Heath
- Department of Biomedical Engineering, Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Andrea J O'Connor
- Department of Biomedical Engineering, Graeme Clark Institute, University of Melbourne, Parkville, VIC 3010, Australia.
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18
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S A, Kavitha HP. Magnesium Oxide Nanoparticles: Effective Antilarvicidal and Antibacterial Agents. ACS OMEGA 2023; 8:5225-5233. [PMID: 36816696 PMCID: PMC9933234 DOI: 10.1021/acsomega.2c01450] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 12/14/2022] [Indexed: 05/27/2023]
Abstract
People are vulnerable to mosquito-borne infections in tropical and subtropical climate countries. Due to resistive issues, vector control is an immediate concern in today's environment. The current study describes the synthesis of magnesium oxide by four different approaches including green, microwave, sol-gel, and hydrothermal methods. The synthesized magnesium oxide (MgO) nanoparticles were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), high-resolution scanning electron microscopy (HRSEM), and energy-dispersive X-ray analysis (EDAX) techniques. The FT-IR studies reveal the presence of functional groups in the synthesized nanoparticles. The structural and morphological studies were investigated using XRD and HRSEM. EDAX reveals the presence of Mg and O in the prepared samples. The synthesized MgO NPs were screened for antibacterial studies against Gram-positive strains, Enterococcus faecalis and Staphylococcus aureus, two Gram-negative cultures, Escherichia coli and Klebsiella pneumoniae, using different concentrations. The results indicated excellent antibacterial activity against both Gram-positive and Gram-negative bacteria at 50 mg/mL hydrothermally produced MgO nanoparticles, with a maximal zone of inhibition (ZOI) of 5 mm for S. aureus, 7 mm for E. faecalis, and 6 mm for K. pneumoniae. The ZOI of E. coli was found to be the greatest at 9 mm when 50 mg/mL sol-gel-produced MgO nanoparticles were used. The synthesized MgO nanostructures were tested against fourth-instar larvae of Aedes aegypti and Aedes albopictus, and the hydrothermally synthesized MgO nanostructures exhibited better results when compared with other methods of synthesis. The reports show that A. aegypti and A. albopictus mortality rates were reported to be the lowest with green-manufactured MgO nanoparticles (7.5 g mL-1) and the highest with hydrothermally synthesized MgO nanoparticles (120 g mL-1). The research indicates that MgO nanostructures are promising drugs for antibacterial and mosquitocidal larvae control properties.
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Affiliation(s)
- Abinaya S
- SRM Institute of Science and Technology, Ramapuram, Chennai 600089, India, https://renuwit.org/contact/
| | - Helen P. Kavitha
- SRM Institute of Science and Technology, Ramapuram, Chennai 600089, India, https://renuwit.org/contact/
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19
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Carrapiço A, Martins MR, Caldeira AT, Mirão J, Dias L. Biosynthesis of Metal and Metal Oxide Nanoparticles Using Microbial Cultures: Mechanisms, Antimicrobial Activity and Applications to Cultural Heritage. Microorganisms 2023; 11:microorganisms11020378. [PMID: 36838343 PMCID: PMC9960935 DOI: 10.3390/microorganisms11020378] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/21/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Nanoparticles (1 to 100 nm) have unique physical and chemical properties, which makes them suitable for application in a vast range of scientific and technological fields. In particular, metal nanoparticle (MNPs) research has been showing promising antimicrobial activities, paving the way for new applications. However, despite some research into their antimicrobial potential, the antimicrobial mechanisms are still not well determined. Nanoparticles' biosynthesis, using plant extracts or microorganisms, has shown promising results as green alternatives to chemical synthesis; however, the knowledge regarding the mechanisms behind it is neither abundant nor consensual. In this review, findings from studies on the antimicrobial and biosynthesis mechanisms of MNPs were compiled and evidence-based mechanisms proposed. The first revealed the importance of enzymatic disturbance by internalized metal ions, while the second illustrated the role of reducing and negatively charged molecules. Additionally, the main results from recent studies (2018-2022) on the biosynthesis of MNPs using microorganisms were summarized and analyzed, evidencing a prevalence of research on silver nanoparticles synthesized using bacteria aiming toward testing their antimicrobial potential. Finally, a synopsis of studies on MNPs applied to cultural heritage materials showed potential for their future use in preservation.
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Affiliation(s)
- António Carrapiço
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Institute for Research and Advanced Training (IIFA), University of Évora, 7000-809 Évora, Portugal
| | - Maria Rosário Martins
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Medicinal Sciences and Health, School of Health and Human Development, University of Évora, 7000-671 Évora, Portugal
| | - Ana Teresa Caldeira
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Chemistry and Biochemistry, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
| | - José Mirão
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Geosciences, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
| | - Luís Dias
- HERCULES Laboratory, Cultural Heritage, Studies and Safeguard, University of Évora, 7000-809 Évora, Portugal
- Department of Geosciences, School of Sciences and Technology, University of Évora, 7000-671 Évora, Portugal
- Correspondence:
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20
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Vishwanathan S, Das S. Glucose-mediated one-pot hydrothermal synthesis of hollow magnesium oxide-zinc oxide (MgO-ZnO) microspheres with enhanced natural sunlight photocatalytic activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:8512-8525. [PMID: 35460004 DOI: 10.1007/s11356-022-20283-1] [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: 08/23/2021] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Glucose -mediated one-pot hydrothermal method has been utilized to synthesize hollow spherical MgO-ZnO (xMgO-(1-x)ZnO, x = 0, 0.2, 0.4, 0.6) microstructures which are highly efficient in high-energy ultraviolet (UV) region of natural sunlight. In this process, glucose formed roundish spheres, and simultaneously metal precursors were coated on that spheres during the hydrothermal reaction. X-ray diffraction analysis (XRD) supports the formation of highly crystalline wurtzite structure of MgO-ZnO for Mg loading less than 20%. Higher concentration of Mg produces wurtzite hexagonal ZnO and cubic MgO in the composites. The widening in band gap energy of synthesized MgO-ZnO microspheres compared to ZnO was analyzed by UV-visible diffuse reflectance spectroscopy (UV-DRS) result. Brunauer-Emmett-Teller (BET) surface area analysis showed that with the increase in Mg loading, the specific surface area increases up to 14.27 times as compared to pristine ZnO. The synthesized catalysts were used as an efficient photocatalyst towards the degradation of rhodamine B (RhB), methylene blue (MB), and phenol under natural solar irradiation. Results illustrated that MB and RhB dye solutions were 100% degraded by 0.6 MgO-ZnO in 100 min and 150 min, respectively, whereas pure ZnO samples showed only 65% and 79% degradation. Also, for phenol solution, 0.6 MgO-ZnO showed enhanced degradation efficiency of 72% in 240 min in comparison with 58% degradation shown by ZnO. Additionally, the MgO-ZnO catalysts were stable and showed excellent degradation efficiency up to four consecutive cycles which open a new direction towards potential industrial applications. Hence, the novelty of the current work is to prepare hollow MgO-ZnO microspheres by a single-step hydrothermal process where separate carbon template preparation is not required and to utilize these hollow microspheres as a highly efficient photocatalyst by harnessing the high-energy UV fraction of natural sunlight.
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Affiliation(s)
- Shalini Vishwanathan
- Department of Chemical Engineering, National Institute of Technology Calicut, Calicut, 673601, India
| | - Susmita Das
- Department of Chemical Engineering, National Institute of Technology Calicut, Calicut, 673601, India.
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Optical and biological properties of MgO/ZnO nanocomposite derived via eggshell membrane: a bio-waste approach. Bioprocess Biosyst Eng 2023; 46:39-51. [PMID: 36401654 DOI: 10.1007/s00449-022-02811-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: 06/18/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022]
Abstract
A novel synthesis of MgO/ZnO nanocomposite using a template, namely an eggshell membrane (ESM) was attempted. The nanocomposite was characterized by XRD, UV-visible, FTIR, Raman, DLS (zeta potential and particle size distribution), FESEM with EDX, and HRTEM analysis. The presence of periclase cubic MgO (space group Fm3m) and hexagonal wurtzite ZnO (space group P63mc) structures was verified by the XRD results. The average crystallite size of the MgO/ZnO nanocomposite was equal to 9.43 nm. The nanocomposite exhibited an on-set of absorbance close to 300 nm. From the taucs plot, the bandgap of the composite was calculated, and it was equal to 3.63 eV. The FTIR spectrum of the composite showed Mg-O stretching vibration at 455 cm-1 and that of Zn-O at 564 cm-1. The zeta potential and the particle size distribution of the nanocomposite were equal to - 35.5 mV and 176.1 nm. The FESEM images of the nanocomposite appeared as an aggregated honeycomb with a cubic and hexagonal structure. The EDX analysis showed the presence of Mg (23.65 atom%), Zn (27.95 atom%), and O (48.40 atom%). The antibacterial and antifungal activities of the nanocomposite were investigated using the agar-well diffusion method. The antibacterial activity exhibited the highest zone of inhibition for Bacillus subtilis (25 ± 0.41 mm) and Shigella dysenteria (25 ± 0.19 mm), whereas the antifungal activity showed the highest zone of inhibition for Aspergillus terrus (27 ± 0.25 mm). The MIC value of the nanocomposite was equal to 9.37 (µg/mL) for all the bacteria. Hence, it is verified that the present MgO/ZnO nanocomposite could very well be used to treat bacterial and fungal infections.
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22
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Nanoparticles of magnesium oxyhydroxide and copper oxide: Synthesis and evaluation of their in vitro fungicidal activity on the fungus Omphalia sp. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gurunathan S, Lee AR, Kim JH. Antifungal Effect of Nanoparticles against COVID-19 Linked Black Fungus: A Perspective on Biomedical Applications. Int J Mol Sci 2022; 23:12526. [PMID: 36293381 PMCID: PMC9604067 DOI: 10.3390/ijms232012526] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 08/21/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly transmissible and pathogenic coronavirus that has caused a 'coronavirus disease 2019' (COVID-19) pandemic in multiple waves, which threatens human health and public safety. During this pandemic, some patients with COVID-19 acquired secondary infections, such as mucormycosis, also known as black fungus disease. Mucormycosis is a serious, acute, and deadly fungal infection caused by Mucorales-related fungal species, and it spreads rapidly. Hence, prompt diagnosis and treatment are necessary to avoid high mortality and morbidity rates. Major risk factors for this disease include uncontrolled diabetes mellitus and immunosuppression that can also facilitate increases in mucormycosis infections. The extensive use of steroids to prevent the worsening of COVID-19 can lead to black fungus infection. Generally, antifungal agents dedicated to medical applications must be biocompatible, non-toxic, easily soluble, efficient, and hypoallergenic. They should also provide long-term protection against fungal growth. COVID-19-related black fungus infection causes a severe increase in fatalities. Therefore, there is a strong need for the development of novel and efficient antimicrobial agents. Recently, nanoparticle-containing products available in the market have been used as antimicrobial agents to prevent bacterial growth, but little is known about their efficacy with respect to preventing fungal growth, especially black fungus. The present review focuses on the effect of various types of metal nanoparticles, specifically those containing silver, zinc oxide, gold, copper, titanium, magnetic, iron, and carbon, on the growth of various types of fungi. We particularly focused on how these nanoparticles can impact the growth of black fungus. We also discussed black fungus co-infection in the context of the global COVID-19 outbreak, and management and guidelines to help control COVID-19-associated black fungus infection. Finally, this review aimed to elucidate the relationship between COVID-19 and mucormycosis.
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Affiliation(s)
- Sangiliyandi Gurunathan
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Ah Reum Lee
- CHA Advanced Research Institute, CHA Medical Center, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Korea
| | - Jin Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 05029, Korea
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Rajagopalachar S, Pattar J, Mulla S. Synthesis and characterization of plate like high surface area MgO nanoparticles for their antibacterial activity against Bacillus cereus (MTCC 430) and Pseudomonas aeruginosa (MTCC 424) bacterias. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Bulyga DV, Evstropiev SK, Nashchekin AV. Structural engineering of ZnO–MgO intermediates for functional ceramics. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04836-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Benisha R, Amalanathan M, Aravind M, Mary MSM, Ahmad A, Tabassum S, Al-Qahtani WH, Ahmad I. Catharanthus roseus leaf extract mediated Ag-MgO nanocatalyst for photocatalytic degradation of Congo red dye and their antibacterial activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Specific charge separation of Sn doped MgO nanoparticles for photocatalytic activity under UV light irradiation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121189] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Zare M. Synthesis of Ag nanoparticle-decorated MgO hollow spheres for enhancing photocatalytic activity. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2081565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Maryam Zare
- Basic Sciences Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran
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Antifouling Mortars for Underwater Restoration. NANOMATERIALS 2022; 12:nano12091498. [PMID: 35564207 PMCID: PMC9101391 DOI: 10.3390/nano12091498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 02/01/2023]
Abstract
This research has focused on the assessment of the compositional features and mechanical and antifouling performances of two different mortars formulated for an underwater setting, and which contain Mg(OH)2 as an antifouling agent. Regarding the mechanical characterization, the uniaxial compressive strength and flexural strength were measured. The composition of the materials was explored by differential thermal/thermogravimetric analysis (DTA-TG), X-ray diffraction analysis (XRPD), and scanning electronic microscopy (SEM) coupled with EDS microanalysis. The assessment of the biological colonization was evaluated with colorimetric analysis and image analysis. The results suggest that both mortars have good mechanical resistance once set underwater. Moreover, the adding of Mg(OH)2 improves the resistance toward biofouling; this was observed both in laboratory and sea-exposed specimens.
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Tauseef A, Hisam F, Hussain T, Caruso A, Hussain K, Châtel A, Chénais B. Nanomicrobiology: Emerging Trends in Microbial Synthesis of Nanomaterials and Their Applications. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02256-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Durable Polymer Coatings: A Comparative Study of PDMS-Based Nanocomposites as Protective Coatings for Stone Materials. CHEMISTRY 2022. [DOI: 10.3390/chemistry4010006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Nowadays, durable protective coatings receive more attention in the field of conservation for several reasons (they are cost effective, time consuming, more resistance, etc.). Hence, this study was focused on producing a multi-functional, durable coating to protect different stone materials, especially, Lecce stone, bricks, and marble. For this purpose, ZrO2-doped-ZnO-PDMS nanocomposites (PDMS, polydimethylsiloxane used as the binder) were synthesized by in situ reaction (doped nanoparticles were inserted into the polymer matrix during the synthesis of PDMS) and the performances of resulting coatings were examined by handling different experimental analyses. In particular, the study aimed to evaluate the durability properties of the coating along with the self-cleaning effect. As a result, the durability of the nanocomposite coating with respect to the well-known PDMS coating was assessed after exposure to two different ageing cycles: solar ageing (300 W, 1000 h) and humid chamber ageing (RH > 80%, T = 22 ± 3 °C, desiccator, 2 years). All the results were in good agreement with each other providing that newly prepared nanocomposite coating can be used as a durable protective coating for different stone materials.
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Comparative studies of the biological efficacies of Ag and Ag-MgO nanocomposite formed by the green synthesis route. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Madona J, Sridevi C. Surfactant assisted hydrothermal synthesis of MgO/g-C3N4 heterojunction nanocomposite for enhanced solar photocatalysis and antimicrobial activities. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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El-Shafai NM, Beltagi AM, Ibrahim MM, Ramadan MS, El-Mehasseb I. Enhancement of the photocurrent and electrochemical properties of the modified nanohybrid composite membrane of cellulose/graphene oxide with magnesium oxide nanoparticle (GO@CMC.MgO) for photocatalytic antifouling and supercapacitors applications. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138989] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Li J, Ma R, Wu Z, He S, Chen Y, Bai R, Wang J. Visible-Light-Driven Ag-Modified TiO 2 Thin Films Anchored on Bamboo Material with Antifungal Memory Activity against Aspergillus niger. J Fungi (Basel) 2021; 7:jof7080592. [PMID: 34436131 PMCID: PMC8397055 DOI: 10.3390/jof7080592] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 11/16/2022] Open
Abstract
A round-the-clock photocatalyst with energy-storage ability has piqued the interest of researchers for removing microbial contaminants from indoor environments. This work presents a moderate round-the-clock method for inhibiting the growth of fungus spores on bamboo materials using Ag-modified TiO2 thin films. Photoactivated antifungal coating with catalytic memory activity was assembled on a hydrophilic bamboo by first anchoring anatase TiO2 thin films (TB) via hydrogen bonding and then decorating them with Ag nanoparticles (ATB) via electrostatic interactions. Antifungal test results show that the Ag/TiO2 composite films grown on the bamboo surface produced a synergistic antifungal mechanism under both light and dark conditions. Interestingly, post-illumination catalytic memory was observed for ATB, as demonstrated by the inhibition of Aspergillus niger (A. niger) spores, in the dark after visible light was removed, which could be attributed to the transfer of photoexcited electrons from TiO2 to Ag, their trapping on Ag under visible-light illumination, and their release in the dark after visible light was removed. The mechanism study revealed that the immobilized Ag nanoparticles served the role of “killing two birds with one stone”: increasing visible-light absorption through surface plasmon resonance, preventing photogenerated electron–hole recombination by trapping electrons, and contributing to the generation of ●O2−and ●OH. This discovery creates a pathway for the continuous removal of indoor air pollutants such as volatile organic compounds, bacteria, and fungus in the day and night time.
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Affiliation(s)
- Jingpeng Li
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
- Correspondence: (J.L.); (J.W.)
| | - Rumin Ma
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
| | - Zaixing Wu
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
| | - Sheng He
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
| | - Yuhe Chen
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
| | - Ruihua Bai
- Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China; (R.M.); (Z.W.); (S.H.); (Y.C.); (R.B.)
| | - Jin Wang
- Zhejiang Provincial Key Lab of Biological and Chemical Utilizing of Forest Resources, Zhejiang Academy of Forestry, Hangzhou 310023, China
- Correspondence: (J.L.); (J.W.)
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Sun D, Mao J, Wang Z, Li H, Zhang L, Zhang W, Zhang Q, Li P. Inhibition of Aspergillus flavus growth and aflatoxins production on peanuts over α-Fe 2O 3 nanorods under sunlight irradiation. Int J Food Microbiol 2021; 353:109296. [PMID: 34147839 DOI: 10.1016/j.ijfoodmicro.2021.109296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 05/19/2021] [Accepted: 06/05/2021] [Indexed: 11/29/2022]
Abstract
Peanut is an important resource of edible oil and digestible protein in daily life, which is rich in the nutriments and antioxidants such as vitamins, minerals and polyphenols. However, peanut is susceptible to the contamination of Aspergillus flavus (A. flavus), which can produce highly carcinogenic toxins that brings serious threats to human health and food safety. Exploring green and effective methods to control A. flavus is meaningful. Herein, a green and economical way to control A. flavus on peanuts was demonstrated. It was found that the growth of A. flavus hyphae and germination of its spores could be inhibited in the presence of α-Fe2O3 nanorods under sunlight irradiation according to the agar diffusion method, flat colony counting method and fluorescence-based live/dead test. The diameter of inhibition zone was 22.3 ± 0.2 mm and the inhibition rate of spores germination was about 60 ± 5%, when the concentration of α-Fe2O3 was 10 mg/mL for 7 h sunlight irradiation. Most important, α-Fe2O3 showed the photocatalytic inhibition of A. flavus on peanuts under sunlight irradiation with the inhibition rate of about 90 ± 5%, and the production of aflatoxin B1 and aflatoxin B2 were reduced by 90 ± 2% and 70 ± 3%, respectively. By comparing the fat contents, protein contents, acid value, peroxide value and antioxidative compositions of peanuts, it was found that there was no obvious effect on the quality of peanuts after inhibition treatment. The findings provide a green, safe and economical strategy to control A. flavus on peanuts, which may be as a promising way to be used in food and agro-food preservation.
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Affiliation(s)
- Di Sun
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Jin Mao
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
| | - Zhijian Wang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Hui Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Liangxiao Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Wen Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Qi Zhang
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Peiwu Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China; National Reference Laboratory for Agricultural Testing P.R.China, Key Laboratory of Detection for Mycotoxins, Laboratory of Quality & Safety Risk Assessment for Oilseed Products (Wuhan), Quality Inspection & Test Center for Oilseed Products, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
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Khan AU, Khan QU, Tahir K, Ullah S, Arooj A, Li B, Rehman KU, Nazir S, Khan MU, Ullah I. A Tagetes minuta based eco-benign synthesis of multifunctional Au/MgO nanocomposite with enhanced photocatalytic, antibacterial and DPPH scavenging activities. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112146. [PMID: 34082957 DOI: 10.1016/j.msec.2021.112146] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/19/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022]
Abstract
In this research work, facile, economical and eco-benign experimental procedure were adopted to synthesize Au/MgO nanocomposite with the help of Tagetes minuta leaves extract. Phytochemicals present in the leaves of Tagetes minuta were acting as reducing and stabilizing agents to avoid aggregation of nanomaterials during the preparation of Au/MgO nanocomposite. The biologically synthesized nanocomposite were systematically characterized by UV-vis spectroscopy, Scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared microscopy (FTIR), High resolution transmission electron microscopy (HRTEM), Thermogravimetric analysis (TGA), dynamic light scattering (DLS) and elemental mapping. UV-visible spectrum confirmed the presence of MgO and Au due to the presence of two SPR peaks at 315 nm and 528 nm, respectively. Moreover, the Au/MgO nanocomposite exhibited superior photocatalytic, antibacterial, hemolytic, and antioxidant activities. Photocatalytic performance tests of Au/MgO nanocomposite were- appraised by the rapid degradation of the methylene blue (MB) under UV light illumination. More importantly, after four successive cycles of MB degradation, the photocatalytic efficacy remained unchanged, which ensures the stability of the Au/MgO nanocomposite. Furthermore, the antibacterial tests showed that the advanced nanocomposite inhibited the growth of Escherichia coli, Bacillus subtilis, and Staphylococcus aureus with zones of inhibition 18 (±0.3), 21 (±0.5), and 19 (±0.4) mm, respectively. The cytotoxicity study revealed that Au/MgO nanocomposite is nontoxic to ordinary healthy RBCs. Interestingly, the Au/MgO nanocomposite also possesses an excellent antioxidant activity, whereby effectively scavenging 82% stable and harmful DPPH. Overall, the present study concludes that eco-benign Au/MgO nanocomposite has excellent potential for the remediation of bacterial pathogens and degradation of MB.
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Affiliation(s)
- Afaq Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qudrat Ullah Khan
- Key Laboratory of Optoelectronic Devices and Systems, Ministry of Education and Guangdong Province, Collage of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen 518060, China
| | - Kamran Tahir
- Institute of Chemical Sciences, Gomal University, D.I. Khan, KP, Pakistan
| | - Sami Ullah
- Department of Chemistry, COMSATS University Islamabad (CUI), Abbottabad campus, 22060, Pakistan
| | - Aaranda Arooj
- Department of Chemistry, COMSATS University Islamabad (CUI), Abbottabad campus, 22060, Pakistan
| | - Baoshan Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Khalil Ur Rehman
- Institute of Chemical Sciences, Gomal University, D.I. Khan, KP, Pakistan
| | - Sadia Nazir
- Institute of Chemical Sciences, Gomal University, D.I. Khan, KP, Pakistan
| | - Mati Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Irfan Ullah
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Andreadelli A, Petrakis S, Tsoureki A, Tsiolas G, Michailidou S, Baltzopoulou P, van Merkestein R, Hodgson P, Sceats M, Karagiannakis G, Makris AM. Effects of Magnesium Oxide and Magnesium Hydroxide Microparticle Foliar Treatment on Tomato PR Gene Expression and Leaf Microbiome. Microorganisms 2021; 9:microorganisms9061217. [PMID: 34199815 PMCID: PMC8228823 DOI: 10.3390/microorganisms9061217] [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: 04/19/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 11/20/2022] Open
Abstract
Recently, metal oxides and magnesium hydroxide nanoparticles (NPs) with high surface-to-volume ratios were shown to possess antibacterial properties with applications in biomedicine and agriculture. To assess recent observations from field trials on tomatoes showing resistance to pathogen attacks, porous micron-scale particles composed of nano-grains of MgO were hydrated and sprayed on the leaves of healthy tomato (Solanum lycopersicum) plants in a 20-day program. The results showed that the spray induced (a) a modest and selective stress gene response that was consistent with the absence of phytotoxicity and the production of salicylic acid as a signalling response to pathogens; (b) a shift of the phylloplane microbiota from near 100% dominance by Gram (−) bacteria, leaving extremophiles and cyanobacteria to cover the void; and (c) a response of the fungal leaf phylloplane that showed that the leaf epiphytome was unchanged but the fungal load was reduced by about 70%. The direct microbiome changes together with the low level priming of the plant’s immune system may explain the previously observed resistance to pathogen assaults in field tomato plants sprayed with the same hydrated porous micron-scale particles.
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Affiliation(s)
- Aggeliki Andreadelli
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Spyros Petrakis
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Antiopi Tsoureki
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - George Tsiolas
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Sofia Michailidou
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
| | - Penelope Baltzopoulou
- Chemical Process & Energy Resources Institute, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (P.B.); (G.K.)
| | | | - Philip Hodgson
- Calix Limited, Pymble, NSW 2073, Australia; (R.v.M.); (P.H.); (M.S.)
| | - Mark Sceats
- Calix Limited, Pymble, NSW 2073, Australia; (R.v.M.); (P.H.); (M.S.)
| | - George Karagiannakis
- Chemical Process & Energy Resources Institute, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (P.B.); (G.K.)
| | - Antonios M. Makris
- Institute of Applied Biosciences, Centre for Research & Technology, Hellas (CERTH), 570 01 Thessaloniki, Greece; (A.A.); (S.P.); (A.T.); (G.T.); (S.M.)
- Correspondence: ; Tel.: +30-2311-257-541
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Li Q, Hu Y, Zhang B. Polyoxometalate-Ionic Liquids (ILs) and Polyvinyl Alcohol/Chitosan/ILs Hydrogels for Inhibiting Bacteria Colonising Wall Paintings. Carbohydr Polym 2021; 256:117592. [PMID: 33483078 DOI: 10.1016/j.carbpol.2020.117592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/26/2020] [Accepted: 12/28/2020] [Indexed: 01/09/2023]
Abstract
Historical monuments are increasingly being threatened by unexpected microbial colonizers, leading to their subsequent deterioration. Here, two tetraalkylphosphonium polyoxometalate ionic liquids (Q14-IL and Q16-IL) were successfully synthesized, which showed excellent antibacterial activity against four bacteria colonising wall paintings. Notably, Q14-IL exhibited superior antibacterial efficacy compared to longer alkyl Q16-IL. Additionally, polyvinyl alcohol/chitosan (PVA-CS) hydrogels containing two ILs were prepared, and the morphology, thermal stability, swelling ratio and antibacterial activity were systematically evaluated. The results suggest that higher CS content resulted in more uniform micropores and increased the swelling ratio. However, fewer antibacterial ILs were released and diffused over time from the matrix. Hydrogels with 5% CS content exhibited the highest antibacterial activity, which was mainly attributed to the synergetic antibacterial activity of positively charged ammonium (-NH3+) groups of CS and quaternary phosphonium cation of ILs. This study may provide an alternative strategy for fighting against bacterial communities colonising ancient artworks.
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Affiliation(s)
- Qiang Li
- Laboratory of Cultural Relics Conservation Materials, Department of Chemistry, Zhejiang University, Hangzhou, China
| | - Yulan Hu
- Department of Cultural Heritage and Museology, Zhejiang University, Hangzhou, China
| | - Bingjian Zhang
- Department of Cultural Heritage and Museology, Zhejiang University, Hangzhou, China.
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Aburto-Medina A, Le PH, MacLaughlin S, Ivanova E. Diversity of experimental designs for the fabrication of antifungal surfaces for the built environment. Appl Microbiol Biotechnol 2021; 105:2663-2674. [PMID: 33704514 DOI: 10.1007/s00253-021-11214-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/22/2021] [Accepted: 02/28/2021] [Indexed: 11/28/2022]
Abstract
The fungal infestation in construction industries is a major problem with a very high removal cost that needs to be controlled not only to prevent the fouling of surfaces but also to prevent allergic reactions or respiratory problems especially in immunocompromised individuals. To combat fungal invasion, several experimental approaches to produce antifungal surfaces have been developed. Here, we reviewed the current strategies in designing antifungal surfaces and classified those approaches into two major categories: the chemical and/or physical modification of the actual material surface and nanoparticle-based coating formulations created using the functionalised nanoparticles. KEY POINTS: • Antifungal effect of micro- and nano-structured superhydrophobic surfaces. • Long-term antifungal effect conferred through biocides. • Advanced coatings based on functionalised silica, TiO2 and ZnO nanoparticles.
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Affiliation(s)
- Arturo Aburto-Medina
- College of STEM, School of Science, RMIT University, Melbourne, VIC, 3000, Australia.,ARC Research Hub for Australian Steel Manufacturing Melbourne, Melbourne, VIC, 3001, Australia
| | - Phuc Hoang Le
- College of STEM, School of Science, RMIT University, Melbourne, VIC, 3000, Australia.,ARC Research Hub for Australian Steel Manufacturing Melbourne, Melbourne, VIC, 3001, Australia
| | | | - Elena Ivanova
- College of STEM, School of Science, RMIT University, Melbourne, VIC, 3000, Australia. .,ARC Research Hub for Australian Steel Manufacturing Melbourne, Melbourne, VIC, 3001, Australia.
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Bedair TM, Heo Y, Ryu J, Bedair HM, Park W, Han DK. Biocompatible and functional inorganic magnesium ceramic particles for biomedical applications. Biomater Sci 2021; 9:1903-1923. [PMID: 33506843 DOI: 10.1039/d0bm01934h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Magnesium ceramics hold promise for numerous biological applications. This review covers the synthesis of magnesium ceramic particles with specific morphologies and potential modification techniques. Magnesium ceramic particles possess multiple characteristics directly applicable to human biology; they are anti-inflammatory, antibacterial, antiviral, and offer anti-cancer effects. Based on these advantages, magnesium hydroxide nanoparticles have been extensively utilized across biomedical fields. In a vascular stent, the incorporation of magnesium ceramic nanoparticles enhances re-endothelialization. Additionally, tissue regeneration for bone, cartilage, and kidney can be promoted by magnesium ceramics. This review enables researchers to identify the optimum synthetic conditions to prepare magnesium ceramics with specific morphologies and sizes and select the appropriate modification protocols. It is also intended to elucidate the desirable physicochemical properties and biological benefits of magnesium ceramics.
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Affiliation(s)
- Tarek M Bedair
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi 13488, Korea.
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The Adverse Effects of TiO 2 Photocatalycity on Paraloid B72 Hybrid Stone Relics Protective Coating Aging Behaviors under UV Irradiation. Polymers (Basel) 2021; 13:polym13020262. [PMID: 33466762 PMCID: PMC7830140 DOI: 10.3390/polym13020262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 11/16/2022] Open
Abstract
The incorporation of photocatalytic nanomaterials into polymer coatings is used to protect stone relics from weathering. However, the photocatalytic nanomaterials might generate excess free radicals to degrade the polymer matrix. In this work, a certain amount of TiO2 nanoparticles were dispersed into Paraloid B72 and applied onto sandstone relics to explore the adverse effects of TiO2 nanoparticles on Paraloid B72 under ultraviolet (UV) irradiation. To fulfill this goal, the effects of TiO2 on pore formation and the structure of Paraloid B72 was studied by scanning electron microscopy (SEM). Moreover, the surface chemical composition, pore structure, surface roughness and surface wettability were explored via Fourier transform infrared (FTIR) spectroscopy, SEM, optical profilometer and water contact angle measurement under UV irradiation. Results showed that the incorporation of TiO2 nanoparticles prohibited the generation of pores in Paraloid B72 and there were no pores formed when the content of TiO2 exceeded 0.8 wt%. The water contact angle of origin Paraloid B72 and TiO2/Paraloid B72 decreased with the prolonging UV irradiation. Moreover, TiO2 nanoparticles were extracted from the matrix and the pores cannot be detected with the prolonging UV irradiation time under a higher content of TiO2. These research findings might promote the understanding of using photocatalytic nanomaterials in developing stone relics' protective coating.
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Wang X, Zhang J, Xie G, Yin Z, Liu J, Ma X. Hollow, mesoporous, eutectic Zn 1−xMg xO nano-spheres as solid acid–base catalysts for the highly regio-selective O-methylation of 1,2-diphenols. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01236c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hollow, mesoporous and eutectic Zn1−xMgxO nanospheres promote the highly selective O-methylation of 1,2-diphenols to afford mono-ethers in complete conversion together with excellent mono-ether selectivities via single-site activation model.
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Affiliation(s)
- Xuri Wang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Jianing Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Guangxin Xie
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing, 400065, P. R. China
| | - Zuyong Yin
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Jie Liu
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Xuebing Ma
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
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45
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Al-Rawashdeh NAF, Allabadi O, Aljarrah MT. Photocatalytic Activity of Graphene Oxide/Zinc Oxide Nanocomposites with Embedded Metal Nanoparticles for the Degradation of Organic Dyes. ACS OMEGA 2020; 5:28046-28055. [PMID: 33163787 PMCID: PMC7643185 DOI: 10.1021/acsomega.0c03608] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/09/2020] [Indexed: 05/14/2023]
Abstract
Nanocomposite materials based on metal nanoparticles and graphene oxide (GO) have gained increasing attention for their wide range of potential applications in various materials science fields. In this study, an efficient photocatalyst based on GO/ZnO nanocomposites with embedded metal nanoparticles was successfully synthesized via a simple one-pot method. The synthesized nanocomposites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy. The photocatalytic activity of the synthesized nanocomposites was tested in the degradation of methylene blue (MB) dyes, as a model of water pollutants. A catalytic activity of 84% was achieved using a nanocomposite with a percentage of 3.125% GO, after 90 min sunlight irradiation. Furthermore, embedded copper and silver nanoparticles were used as dopants to study their effects on the activity of the photocatalyst. The GO-ZnO-Cu nanocomposite showed that the activity toward MB degradation was decreased by 50%, while a significant increase in the activity of MB degradation was achieved by the GO-ZnO-Ag nanocomposite. The removal efficiency of MB by the GO-ZnO-Ag nanocomposite reached 100% after 40 min of sunlight irradiation. Thus, the GO-ZnO-Ag nanocomposite has the potential to be an efficient adaptable photocatalyst for the photodegradation of organic dyes in industrial wastewater.
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Affiliation(s)
| | - Odai Allabadi
- Chemistry
Department, Jordan University of Science
& Technology, Irbid 22110, Jordan
| | - Mohannad T. Aljarrah
- Department
of Chemical Engineering, Jordan University
of Science & Technology, Irbid 22110, Jordan
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46
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Development of Eco-Friendly and Self-Cleaning Lime-Pozzolan Plasters for Bio-Construction and Cultural Heritage. BUILDINGS 2020. [DOI: 10.3390/buildings10100172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nowadays, the design and use of multi-functional mortars has increased significantly, with interesting applications in the green building and cultural heritage conservation sectors. A key point for a correct adoption of these innovative materials is their behavior along time and their resistance to the weathering. The objective of this project was to define the performance and durability of innovative mortars, in order to use them correctly and to avoid irreparable damage over time. For the development of this project, lime–metakaolin and hydraulic lime–metakaolin based mortars (hereinafter called A, B), as well as A and B with the addition of nano-TiO2 and perlite (hereinafter referred to as A+, B+), have been tested. The focus of the work was to carry out preliminary tests to evaluate the performance and durability characteristics of these mortars, verifying their behavior over time through exposure to artificial aging cycles, including thermal shock cycles in saline solution aerosols, freeze cycles in vapor aerosol, and aging by heat treatment at high temperatures. Before and after each artificial aging cycle, weight measurements, and macroscopic and microscopic observations were performed in order to evaluate possible structural changes. The characteristics of the mortars were assessed by determination of the apparent volume mass, mechanical properties, such as compressive and bending strength, water absorption, whereas their self-cleaning capacity was measured by methylene blue degradation test under UV and solar irradiation. The results obtained show degradation effects in the mortar samples due to aging after each test, and indicated that mortars with perlite and nano-TiO2 are the best-performing ones, both from the durability and energetic point of view, rendering them suitable for applications in the green building sector and the conservation of cultural heritage.
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47
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Singh JP, Singh V, Sharma A, Pandey G, Chae KH, Lee S. Approaches to synthesize MgO nanostructures for diverse applications. Heliyon 2020; 6:e04882. [PMID: 33024853 PMCID: PMC7527648 DOI: 10.1016/j.heliyon.2020.e04882] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/26/2020] [Accepted: 09/07/2020] [Indexed: 10/27/2022] Open
Abstract
Magnesium oxide remained interesting from long time for several important phenomena like; defect induced magnetism, spin electron reflectivity, broad laser emission etc. Moreover, nanostructures of this material exhibited suitability for different kinds of applications ranging from wastewater treatment to spintronics depending upon their shape and size. In this way, researchers had grown nanostructures in the form of nanoparticles, thin films, nanotubes, nanowalls, nanobelts. Though nanoparticles and thin films are well known form of nanostructures and wide variety of synthesis approaches are available, however, limited methodology for other nanostructures are available. In order to grow these nanostructures in an optimized way an understanding of these methods is essential. Thus, this review article depicts an overview of various approaches for design of different kinds of nanostructures.
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Affiliation(s)
- Jitendra Pal Singh
- Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Varsha Singh
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Aditya Sharma
- Department of Physics, Manav Rachna University, Faridabad, Haryana, 121004, India
| | - Ganesh Pandey
- University of Petroleum & Energy Studies (UPES), Dehradun, Uttarakhand, 248007, India
- Gus Global Services ( India) Private Limited, Gurugram, Haryana, 122011, India
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Sangsul Lee
- Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- Xavisoptics Ltd., Pohang 37673, Republic of Korea
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48
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Stauber RH, Westmeier D, Wandrey M, Becker S, Docter D, Ding GB, Thines E, Knauer SK, Siemer S. Mechanisms of nanotoxicity - biomolecule coronas protect pathological fungi against nanoparticle-based eradication. Nanotoxicology 2020; 14:1157-1174. [PMID: 32835557 DOI: 10.1080/17435390.2020.1808251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Whereas nanotoxicity is intensely studied in mammalian systems, our knowledge of desired or unwanted nano-based effects for microbes is still limited. Fungal infections are global socio-economic health and agricultural problems, and current chemical antifungals may induce adverse side-effects in humans and ecosystems. Thus, nanoparticles are discussed as potential novel and sustainable antifungals via the desired nanotoxicity but often fail in practical applications. In our study, we found that nanoparticles' toxicity strongly depends on their binding to fungal spores, including the clinically relevant pathogen Aspergillus fumigatus as well as common plant pests, such as Botrytis cinerea or Penicillum expansum. Employing a selection of the model and antimicrobial nanoparticles, we found that nanoparticle-spore complex formation is influenced by the NM's physicochemical properties, such as size, identified as a key determinant for our silica model particles. Biomolecule coronas acquired in pathophysiologically and ecologically relevant environments, protected fungi against nanoparticle-induced toxicity as shown by employing antimicrobial ZnO, Ag, or CuO nanoparticles as well as dissolution-resistant quantum dots. Mechanistically, dose-dependent corona-mediated resistance was conferred via reducing the physical adsorption of nanoparticles to fungi. The inhibitory effect of biomolecules on nano-based toxicity of Ag NPs was further verified in vivo, using the invertebrate Galleria mellonella as an alternative non-mammalian infection model. We provide the first evidence that biomolecule coronas are not only relevant in mammalian systems but also for nanomaterial designs as future antifungals for human health, biotechnology, and agriculture.
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Affiliation(s)
| | - Dana Westmeier
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Madita Wandrey
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Sven Becker
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Dominic Docter
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Guo-Bin Ding
- Institute for Biotechnology, Shanxi University, Shanxi, China
| | - Eckhard Thines
- Institute for Microbiology, Johannes Gutenberg University, Mainz, Germany
| | - Shirley K Knauer
- Department of Molecular Biology II, Centre for Medical Biotechnology (ZMB)/Center for Nanointegration (CENIDE), University Duisburg-Essen, Essen, Germany
| | - Svenja Siemer
- ENT Department, University Medical Center Mainz, Mainz, Germany
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Amina M, Al Musayeib NM, Alarfaj NA, El-Tohamy MF, Oraby HF, Al Hamoud GA, Bukhari SI, Moubayed NMS. Biogenic green synthesis of MgO nanoparticles using Saussurea costus biomasses for a comprehensive detection of their antimicrobial, cytotoxicity against MCF-7 breast cancer cells and photocatalysis potentials. PLoS One 2020; 15:e0237567. [PMID: 32797097 PMCID: PMC7428194 DOI: 10.1371/journal.pone.0237567] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023] Open
Abstract
Distinct morphological MgO nanoparticles (MgONPs) were synthesized using biomasses of Saussurea costus roots. The biomass of two varieties of Saussurea costus (Qustal hindi and Qustal bahri) were used in the green synthesis of MgONPs. The physical and chemical features of nanoparticles were confirmed by spectroscopic and microscopic techniques. The surface morphology of the obtained nanoparticles was detected at different magnifications by SEM and TEM microscopy and the size of nanoparticles were found to be 30 and 34 nm for Qustal hindi and Qustal bahri, respectively. The antimicrobial activity of the prepared MgONPs was screened against six pathogenic strains. The synthesized nanoparticles by Qustal bahri biomass exerted significant inhibition zones 15, 16, 18, 17, 14, and 10 mm against E. coli, P. aeruginosa, C. tropicalis and C. glabrata, S. aureus and B. subtilis as compared to those from Qustal hindi 12, 8 and 17 mm against B. subtilis, E. coli and C. tropicalis, respectively. MgONPs showed a potential cytotoxicity effect against MCF-7 breast cancer cell lines. Cellular investigations of MgONPs revealed that the prepared nanoparticles by Qustal bahri exhibited high cytotoxicity against MCF-7 cancer cell lines. IC50 values in MCF-7 cells were found to be 67.3% and 52.1% for MgONPs of Saussurea costus biomasses, respectively. Also, the photocatalytic activity of MgONPs of each Saussurea costus variety was comparatively studied. They exhibited an enhanced photocatalytic degradation of methylene blue after UV irradiation for 1 h as 92% and 59% for those prepared by Qustal bahri and Qustal hindi, respectively. Outcome of results revealed that the biosynthesized MgONPs showed promising biomedical potentials.
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Affiliation(s)
- Musarat Amina
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
| | - Nawal M. Al Musayeib
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
| | - Nawal A. Alarfaj
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Maha F. El-Tohamy
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Hesham F. Oraby
- Deanship of Scientific Research, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Gadah A. Al Hamoud
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
| | - Sarah I. Bukhari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Nadine M. S. Moubayed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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50
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Sidhu A, Bala A, Singh H, Ahuja R, Kumar A. Development of MgO-sepoilite Nanocomposites against Phytopathogenic Fungi of Rice ( Oryzae sativa): A Green Approach. ACS OMEGA 2020; 5:13557-13565. [PMID: 32566820 PMCID: PMC7301367 DOI: 10.1021/acsomega.0c00008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Innovation in agriculture is a vital organ of research for sustainable food supply to the increasing global population. Organic compounds used as fungicidal agents against seed-borne pathogens are bracketed due to their toxic nature and residual effects, which are either already banned or may get banned in the near future. In this study, the surface and electric properties of nontoxic sepiolite have been blended with the antimicrobial properties of metabolizable MgO nanoforms (nMgO) as a greener alternative to prepare their nanocomposites. We compared a sepiolite-MgO (SE-MgO) nanocomposite with MgO nanoparticles in an aqua dispersed form (aqMgO-NPs) for their antifungal evaluation against various phytopathogenic fungi of rice. The SE-MgO nanocomposite was more potent in comparison to aqMgO-NPs with ED90 > 230 and 249 μg/mL, respectively, against the test fungi better than standard fungicides. Ultramicroscopic studies revealed hyphal distortion and spore collapse as the cause of antimycotic activity. The in vitro seed treatment revealed 100% hyphal reduction with SE-MgO at 250 μg/mL of MgO as an active ingredient (a.i.). MgO and sepiolite both have been regarded as safe materials by international agencies; therefore, using their nanocomposites can be an effective, sustainable, nontoxic, eco-friendly, and residue-free strategy for combating fungal menace against phytopathogens.
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Affiliation(s)
- Anjali Sidhu
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India
| | - Anju Bala
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana 141004, India
| | - Harmandeep Singh
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India
| | - Radha Ahuja
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India
| | - Amit Kumar
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India
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