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Rafique A, Amjad F, Janjua MRSA, Naqvi SAR, Hassan SU, Abdullah H, Nazir MS, Ali Z, Alshihri AA, Momenah MA, Mansour AA, Bajaber MA, Alalwiat AA. Chia seed-mediated fabrication of ZnO/Ag/Ag 2O nanocomposites: structural, antioxidant, anticancer, and wound healing studies. Front Chem 2024; 12:1405385. [PMID: 39055045 PMCID: PMC11269097 DOI: 10.3389/fchem.2024.1405385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 06/11/2024] [Indexed: 07/27/2024] Open
Abstract
Plant extract-mediated fabrication of metal nanocomposites is used in cell proliferation inhibition and topical wound treatment, demonstrating significant effectiveness. Salvia hispanica L. (chia) seed extract (CE) is used as the reaction medium for the green fabrication of ecofriendly ZnO(CE) nanoparticles (NPs) and Ag/Ag2O(CE) and ZnO/Ag/Ag2O(CE) nanocomposites. The resultant nanoparticles and nanocomposite materials were characterized using UV-visible, Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDX) techniques. In the context of antioxidant studies, ZnO/Ag/Ag2O(CE) exhibited 57% reducing power and 86% 2,2, diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging. All three materials showed strong antibacterial activity against Staphylococcus aureus (S. aureus), Escherichia coli (E.coli), and Bacillus subtilis (B. subtilis) bacterial strains. Additionally, ZnO(CE), Ag/Ag2O(CE), and ZnO/Ag/Ag2O(CE) also revealed 64.47%, 42.56%, and 75.27% in vitro Michigan Cancer Foundation-7 (MCF7) cancer cell line inhibition, respectively, at a concentration of 100 μg/mL. Selectively, the most effective composite material, ZnO/Ag/Ag2O(CE), was used to evaluate in vivo wound healing potential in rat models. The study revealed 96% wound closure in 10 days, which was quite rapid healing compared to wound healing using clinically available ointment. Therefore, in conclusion, the ZnO/Ag/Ag2O(CE) nanocomposite material could be considered for further testing and formulation as a good anticancer and wound healing agent.
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Affiliation(s)
- Aisha Rafique
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Fatima Amjad
- Department of Chemistry, COMSATS University Islamabad, Lahore, Pakistan
| | | | - Syed Ali Raza Naqvi
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Sadaf Ul Hassan
- Department of Chemistry, COMSATS University Islamabad, Lahore, Pakistan
| | - Hanzla Abdullah
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | | | - Zulfiqar Ali
- Department of Chemistry, COMSATS University Islamabad, Lahore, Pakistan
| | - Abdulaziz A. Alshihri
- Department of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Maha Abdullah Momenah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Adel Abo Mansour
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Majed A. Bajaber
- Chemistry Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Ahlam A. Alalwiat
- Chemistry Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
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Mascarenhas-Melo F, Mathur A, Murugappan S, Sharma A, Tanwar K, Dua K, Singh SK, Mazzola PG, Yadav DN, Rengan AK, Veiga F, Paiva-Santos AC. Inorganic nanoparticles in dermopharmaceutical and cosmetic products: Properties, formulation development, toxicity, and regulatory issues. Eur J Pharm Biopharm 2023; 192:25-40. [PMID: 37739239 DOI: 10.1016/j.ejpb.2023.09.011] [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: 05/31/2023] [Revised: 09/03/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
The use of nanotechnology strategies is a current hot topic, and research in this field has been growing significantly in the cosmetics industry. Inorganic nanoparticles stand out in this context for their distinctive physicochemical properties, leading in particular to an increased refractive index and absorption capacity giving them a broad potential for cutaneous applications and making them of special interest in research for dermopharmaceutical and cosmetic purposes. This performance is responsible for its heavy inclusion in the manufacture of skin health products such as sunscreens, lotions, beauty creams, skin ointments, makeup, and others. In particular, their suitable bandgap energy characteristics allow them to be used as photocatalytic semiconductors. They provide excellent UV absorption, commonly known as UV filters, and are responsible for their wide worldwide use in sunscreen formulations without the undesirable white residue after consumer application. In addition, cosmetics based on inorganic nanoparticles have several additional characteristics relevant to formulation development, such as being less expensive compared to other nanomaterials, having greater stability, and ensuring less irritation, itching, and propensity for skin allergies. This review will address in detail the main inorganic nanoparticles used in dermopharmaceutical and cosmetic products, such as titanium dioxide, zinc oxide, silicon dioxide, silver, gold, copper, and aluminum nanoparticles, nanocrystals, and quantum dots, reporting their physicochemical characteristics, but also their additional intrinsic properties that contribute to their use in this type of formulations. Safety issues regarding inorganic nanoparticles, based on toxicity studies, both to humans and the environment, as well as regulatory affairs associated with their use in dermopharmaceuticals and cosmetics, will be addressed.
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Affiliation(s)
- Filipa Mascarenhas-Melo
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.
| | - Ankita Mathur
- Abode Biotec India Private Limited, Hyderbad, Telangana, India
| | - Sivasubramanian Murugappan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Sangareddy, Telangana, India; Department of Physics, Faculty of Science and Engineering, Bernal Institute, University of Limerick, Limerick, Ireland
| | - Arpana Sharma
- Department of Life Sciences, Mewar University, Gangrar, Rajasthan, India
| | | | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Sachin Kumar Singh
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia; School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab-144411, India
| | | | - Dokkari Nagalaxmi Yadav
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Sangareddy, Telangana, India
| | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Sangareddy, Telangana, India
| | - Francisco Veiga
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Ana Cláudia Paiva-Santos
- Department of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.
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Current Advances in Lipid Nanosystems Intended for Topical and Transdermal Drug Delivery Applications. Pharmaceutics 2023; 15:pharmaceutics15020656. [PMID: 36839978 PMCID: PMC9967415 DOI: 10.3390/pharmaceutics15020656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/18/2023] Open
Abstract
Skin delivery is an exciting and challenging field. It is a promising approach for effective drug delivery due to its ease of administration, ease of handling, high flexibility, controlled release, prolonged therapeutic effect, adaptability, and many other advantages. The main associated challenge, however, is low skin permeability. The skin is a healthy barrier that serves as the body's primary defence mechanism against foreign particles. New advances in skin delivery (both topical and transdermal) depend on overcoming the challenges associated with drug molecule permeation and skin irritation. These limitations can be overcome by employing new approaches such as lipid nanosystems. Due to their advantages (such as easy scaling, low cost, and remarkable stability) these systems have attracted interest from the scientific community. However, for a successful formulation, several factors including particle size, surface charge, components, etc. have to be understood and controlled. This review provided a brief overview of the structure of the skin as well as the different pathways of nanoparticle penetration. In addition, the main factors influencing the penetration of nanoparticles have been highlighted. Applications of lipid nanosystems for dermal and transdermal delivery, as well as regulatory aspects, were critically discussed.
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Ermini ML, Summa M, Zamborlin A, Frusca V, Mapanao AK, Mugnaioli E, Bertorelli R, Voliani V. Copper nano-architecture topical cream for the accelerated recovery of burnt skin. NANOSCALE ADVANCES 2023; 5:1212-1219. [PMID: 36798506 PMCID: PMC9926901 DOI: 10.1039/d2na00786j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Skin burns are debilitating injuries with significant morbidity and mortality associated with infections and sepsis, particularly in immunocompromised patients. In this context, nanotechnology can provide pioneering approaches for the topical treatment of burnt skin. Herein, the significant recovery of radiation-damaged skin by exploiting copper ultrasmall-in-nano architectures (CuNAs) dispersed in a home-made cosmetic cream is described and compared to other noble metals (such as gold). Owing to their peculiar design and components, CuNAs elicit a substantial recovery from burned skin in in vivo models after one topical application, and a significant anti-inflammatory effect is highlighted by reducing cytokine expression. The treatment exhibited neither significant toxicity nor the alteration of copper metabolism in the target organs because of the CuNA biocompatibility. This study may open new horizons in the treatment of radiation dermatitis and skin burns caused by other external events.
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Affiliation(s)
- Maria Laura Ermini
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San Silvestro 12 - 56127 Pisa Italy
| | - Maria Summa
- Translational Pharmacology, Istituto Italiano di Tecnologia Via Morego 30 - 16163 Genoa Italy
| | - Agata Zamborlin
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San Silvestro 12 - 56127 Pisa Italy
- NEST-Scuola Normale Superiore Piazza San Silvestro 12 - 56127 Pisa Italy
| | - Valentina Frusca
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San Silvestro 12 - 56127 Pisa Italy
- Institute of Life Sciences, Scuola Superiore Sant'Anna Piazza Martiri della Libertà 33 56127 Pisa Italy
| | - Ana Katrina Mapanao
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San Silvestro 12 - 56127 Pisa Italy
- Center for Radiopharmaceutical Sciences, Paul Scherrer Institute 5232 Villigen-PSI Switzerland
| | - Enrico Mugnaioli
- Department of Earth Sciences, University of Pisa Via S. Maria 53 56126 Pisa Italy
| | - Rosalia Bertorelli
- Translational Pharmacology, Istituto Italiano di Tecnologia Via Morego 30 - 16163 Genoa Italy
| | - Valerio Voliani
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San Silvestro 12 - 56127 Pisa Italy
- Department of Pharmacy, University of Genoa Viale Cembrano 4 - 16148 Genoa Italy
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Chen Q, Riviere JE, Lin Z. Toxicokinetics, dose-response, and risk assessment of nanomaterials: Methodology, challenges, and future perspectives. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1808. [PMID: 36416026 PMCID: PMC9699155 DOI: 10.1002/wnan.1808] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 11/24/2022]
Abstract
The rapid growth of nanomaterial applications has raised safety concerns for human health. A number of studies have been conducted to assess the toxicokinetics, toxicology, dose-response, and risk assessment of different nanomaterials using in vitro and in vivo animal and human models. However, current studies cannot meet the demand for efficient assessment of toxicokinetics, dose-response relationships, or the toxicological risk arising from the rapidly increasing number of newly synthesized nanomaterials. In this article, we review the methods for conducting toxicokinetics, hazard identification, dose-response, exposure, and risk assessment studies of nanomaterials, identify the knowledge gaps, and discuss the challenges remaining. We provide the rationale behind the appropriate design of nanomaterial plasma toxicokinetic and tissue distribution studies, including caveats on the interpretation and correlation of in vitro and in vivo toxicology studies. The potential of using physiologically based pharmacokinetic (PBPK) models to extrapolate toxicokinetic and toxicity findings from in vitro to in vivo and from animals to humans is discussed, and the knowledge gaps of PBPK modeling for nanomaterials are identified. While challenges still exist, there has been progress in the toxicokinetics, hazard identification, and risk assessment of nanomaterials in the past two decades. Recent advancements in the field are highlighted with relevant examples. We also share latest guidelines as well as our perspectives on future studies needed to characterize the toxicokinetics, toxicity, and dose-response relationship in support of nanomaterial risk assessment. This article is categorized under: Toxicology and Regulatory Issues in Nanomedicine > Toxicology of Nanomaterials Toxicology and Regulatory Issues in Nanomedicine > Regulatory and Policy Issues in Nanomedicine.
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Affiliation(s)
- Qiran Chen
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, Florida, USA
| | - Jim E. Riviere
- 1Data Consortium, Kansas State University, Olathe, Kansas, USA
- Center for Chemical Toxicology Research and Pharmacokinetics, Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Zhoumeng Lin
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA
- Center for Environmental and Human Toxicology, University of Florida, Gainesville, Florida, USA
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Green Synthesis of Silver Nanoparticles Coated by Water Soluble Chitosan and Its Potency as Non-Alcoholic Hand Sanitizer Formulation. MATERIALS 2022; 15:ma15134641. [PMID: 35806776 PMCID: PMC9267502 DOI: 10.3390/ma15134641] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 02/06/2023]
Abstract
The synthesis of silver nanoparticles using plant extracts, widely known as a green synthesis method, has been extensively studied. Nanoparticles produced through this method have applications as antibacterial agents. Bacterial and viral infection can be prevented by use of antibacterial agents such as soap, disinfectants, and hand sanitizer. Silver nanoparticles represent promising hand sanitizer ingredients due to their antibacterial activity and can enable reduced use of alcohol and triclosan. This study employed silver nanoparticles synthesized using Kepok banana peel extract (Musa paradisiaca L.). Nanoparticle effectiveness as a hand sanitizer can be enhanced by coating with a biocompatible polymer such as chitosan. The characterization of silver nanoparticles was conducted using UV-Vis, with an obtained peak at 434.5 nm. SEM-EDX analysis indicated nanoparticles with a spherical morphology. Silver nanoparticles coated with chitosan were characterized through FTIR to verify the attached functional groups. Gel hand sanitizers were produced using silver nanoparticles coated with different chitosan concentrations. Several tests were undertaken to determine the gel characteristics, including pH, syneresis, and antibacterial activity. Syneresis leads to unstable gels, but was found to be inhibited by adding chitosan at a concentration of 2%. Antibacterial activity was found to increase with increase in chitosan concentration.
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Gupta V, Mohapatra S, Mishra H, Farooq U, Kumar K, Ansari MJ, Aldawsari MF, Alalaiwe AS, Mirza MA, Iqbal Z. Nanotechnology in Cosmetics and Cosmeceuticals—A Review of Latest Advancements. Gels 2022; 8:gels8030173. [PMID: 35323286 PMCID: PMC8951203 DOI: 10.3390/gels8030173] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/24/2022] [Accepted: 03/07/2022] [Indexed: 11/16/2022] Open
Abstract
Nanotechnology has the potential to generate advancements and innovations in formulations and delivery systems. This fast-developing technology has been widely exploited for diagnostic and therapeutic purposes. Today, cosmetic formulations incorporating nanotechnology are a relatively new yet very promising and highly researched area. The application of nanotechnology in cosmetics has been shown to overcome the drawbacks associated with traditional cosmetics and also to add more useful features to a formulation. Nanocosmetics and nanocosmeceuticals have been extensively explored for skin, hair, nails, lips, and teeth, and the inclusion of nanomaterials has been found to improve product efficacy and consumer satisfaction. This is leading to the replacement of many traditional cosmeceuticals with nanocosmeceuticals. However, nanotoxicological studies on nanocosmeceuticals have raised concerns in terms of health hazards due to their potential skin penetration, resulting in toxic effects. This review summarizes various nanotechnology-based approaches being utilized in the delivery of cosmetics as well as cosmeceutical products, along with relevant patents. It outlines their benefits, as well as potential health and environmental risks. Further, it highlights the regulatory status of cosmeceuticals and analyzes the different regulatory guidelines in India, Europe, and the USA and discusses the different guidelines and recommendations issued by various regulatory authorities. Finally, this article seeks to provide an overview of nanocosmetics and nanocosmeceuticals and their applications in cosmetic industries, which may help consumers and regulators to gain awareness about the benefits as well as the toxicity related to the continuous and long-term uses of these products, thus encouraging their judicious use.
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Affiliation(s)
- Vaibhav Gupta
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
| | - Sradhanjali Mohapatra
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
| | - Harshita Mishra
- Smart Society Research Team, Faculty of Business and Economics, Mendel University, 61300 Brno, Czech Republic;
| | - Uzma Farooq
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
| | - Keshav Kumar
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
| | - Mohammad Javed Ansari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 16278, Saudi Arabia or (M.J.A.); (M.F.A.); (A.S.A.)
| | - Mohammed F. Aldawsari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 16278, Saudi Arabia or (M.J.A.); (M.F.A.); (A.S.A.)
| | - Ahmed S. Alalaiwe
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 16278, Saudi Arabia or (M.J.A.); (M.F.A.); (A.S.A.)
| | - Mohd Aamir Mirza
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
- Correspondence: (M.A.M.); (Z.I.); Tel.: +98-11733016 (Z.I.)
| | - Zeenat Iqbal
- Nanotechnology Lab, School of Pharmaceutics Education and Research (SPER), Jamia Hamdard University, New Delhi 110062, Delhi, India; (V.G.); (S.M.); (U.F.); (K.K.)
- Correspondence: (M.A.M.); (Z.I.); Tel.: +98-11733016 (Z.I.)
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Omar AS. Nanoformulation Safety versus Toxicity; What do the Recent Studies Tell Us? INTERNATIONAL JOURNAL OF PHARMACEUTICAL RESEARCH AND ALLIED SCIENCES 2022. [DOI: 10.51847/spfpldpsvl] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Antioxidant and Antibacterial Profiling of Pomegranate-pericarp Extract Functionalized-zinc Oxide Nanocomposite. BIOTECHNOL BIOPROC E 2021; 26:728-737. [PMID: 34720608 PMCID: PMC8548265 DOI: 10.1007/s12257-021-0211-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/29/2021] [Accepted: 09/02/2021] [Indexed: 11/03/2022]
Abstract
With the advancement in green nanotechnology, considerable attention is being given to the synthesis of different kinds of nanomaterials for biological applications. In this study, zinc oxide nanocomposites (ZnO NPs) were synthesized using Punica granatum L. (Pomegranate) pericarp ethanolic extract (PE) by the chemical precipitation method. The prepared ZnO NPs showed a characteristic peak at 270 nm in the UV-Vis spectrophotometer and chemical bond stretching in the Fourier transforms infrared spectroscopy (FT-IR) spectra, indicated the formation of PE-functionalized zinc oxide nanocomposite (PE-ZnO NPs). The SEM results showed agglomerated PE-ZnO NPs of a spherical shape with an average size of 80-100 nm. Moreover, biological assessment of the PE-ZnO NPs revealed significant scavenging activity in DPPH (116.5%) and ABTS·+ (95.2%) radical assay methods, and substantial antibacterial activity against Bacillus cereus, Bacillus licheniformis, and Escherichia coli. Furthermore, PE-ZnO NPs showed about 96.3% of cell viability for human HaCaT cells at the maximum concentration (100 µg/mL), marked as a reliable bioactive agent. Therefore, the developed PE-ZnO NPs were elucidated with substantial ROS scavenger and non-antibiotic antibacterial agent and hence, can be applied in respective biological applications.
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Ahmed T, Noman M, Manzoor N, Ali S, Rizwan M, Ijaz M, Allemailem KS, BinShaya AS, Alhumaydhi FA, Li B. Recent advances in nanoparticles associated ecological harms and their biodegradation: Global environmental safety from nano-invaders. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2021; 9:106093. [DOI: 10.1016/j.jece.2021.106093] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
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Weber V, Kamika I, Momba MNB. Comparing the effect of zinc oxide and titanium dioxide nanoparticles on the ability of moderately halophilic bacteria to treat wastewater. Sci Rep 2021; 11:16969. [PMID: 34417503 PMCID: PMC8379202 DOI: 10.1038/s41598-021-96413-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/23/2021] [Indexed: 11/11/2022] Open
Abstract
This study evaluates the ability of moderately halophilic bacterial isolates (Serratia sp., Bacillus sp., Morganella sp., Citrobacter freundii and Lysinibacillus sp.) to treat polluted wastewater in the presence of nZnO and nTiO2 nanoparticles. In this study, bacteria isolates were able to take up nZnO and nTiO2 at concentrations ranging from 1 to 50 mg/L in the presence of higher DO uptake at up to 100% and 99%, respectively, while higher concentrations triggered a significant decrease. Individual halophilic bacteria exhibited a low COD removal efficiency in the presence of both metal oxide nanoparticles concentration ranged between 1 and 10 mg/L. At higher concentrations, they triggered COD release of up to − 60% concentration. Lastly, the test isolates also demonstrated significant nutrient removal efficiency in the following ranges: 23–65% for NO3− and 28–78% for PO43−. This study suggests that moderately halophilic bacteria are good candidates for the bioremediation of highly polluted wastewater containing low metal oxide nanoparticles.
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Affiliation(s)
- Vanessa Weber
- Department of Environmental, Water and Earth Sciences, Tshwane University of Technology, Arcadia Campus, Private Bag X680, Pretoria, 0001, South Africa
| | - Ilunga Kamika
- Institute for Nanotechnology and Water Sustainability, School of Science, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa.
| | - Maggy N B Momba
- Department of Environmental, Water and Earth Sciences, Tshwane University of Technology, Arcadia Campus, Private Bag X680, Pretoria, 0001, South Africa.
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