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Mazumder JA, Ahmad A, Ali J, Noori R, Bhuyan T, Sardar M, Sheehan D. Biomimetic green synthesis of ZnO nanoflowers using α-amylase: from antimicrobial to toxicological evaluation. Sci Rep 2024; 14:16566. [PMID: 39019931 PMCID: PMC11254910 DOI: 10.1038/s41598-024-66140-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 06/27/2024] [Indexed: 07/19/2024] Open
Abstract
Biologically mediated synthesis of nanomaterials has emerged as an ecologically benign and biocompatible approach. Our study explores enzymatic synthesis, utilizing α-amylase to synthesize ZnO nanoflowers (ZnO-NFs). X-ray diffraction and energy-dispersive X-ray spectroscopy revealed crystal structure and elemental composition. Dynamic light scattering analysis indicates that ZnO-NFs possess a size of 101 nm. Transmission electron microscopy showed a star-shaped morphology of ZnO-NFs with petal-like structures. ZnO-NFs exhibit potent photocatalytic properties, degrading 90% eosin, 87% methylene blue, and 81% reactive red dyes under UV light, with kinetics fitting the Langmuir-Hinshelwood pseudo-first-order rate law. The impact of pH and interfering substances on dye degradation was explored. ZnO-NFs display efficient bacteriocidal activity against different Gram-positive and negative strains, antibiofilm potential (especially with P. aeruginosa), and hemocompatibility up to 600 ppm, suggesting versatile potential in healthcare and environmental remediation applications.
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Affiliation(s)
- Jahirul Ahmed Mazumder
- Department of Chemistry, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
| | - Atika Ahmad
- Department of Chemistry, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates
| | - Juned Ali
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Rubia Noori
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Tamanna Bhuyan
- Department of Applied Biology, School of Biological Sciences, University of Science and Technology Meghalaya, Ri Bhoi, India
| | - Meryam Sardar
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - David Sheehan
- Department of Chemistry, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
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Yan R, Zhan M, Xu J, Peng Q. Functional nanomaterials as photosensitizers or delivery systems for antibacterial photodynamic therapy. BIOMATERIALS ADVANCES 2024; 159:213820. [PMID: 38430723 DOI: 10.1016/j.bioadv.2024.213820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 02/09/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
Bacterial infection is a global health problem that closely related to various diseases threatening human life. Although antibiotic therapy has been the mainstream treatment method for various bacterial infectious diseases for decades, the increasing emergence of bacterial drug resistance has brought enormous challenges to the application of antibiotics. Therefore, developing novel antibacterial strategies is of great importance. By producing reactive oxygen species (ROS) with photosensitizers (PSs) under light irradiation, antibacterial photodynamic therapy (aPDT) has emerged as a non-invasive and promising approach for treating bacterial infections without causing drug resistance. However, the insufficient therapeutic penetration, poor hydrophilicity, and poor biocompatibility of traditional PSs greatly limit the efficacy of aPDT. Recently, studies have found that nanomaterials with characteristics of favorable photocatalytic activity, surface plasmonic resonance, easy modification, and high drug loading capacity can improve the therapeutic efficacy of aPDT. In this review, we aim to provide a comprehensive understanding of the mechanism of nanomaterials-mediated aPDT and summarize the representative nanomaterials in aPDT, either as PSs or carriers for PSs. In addition, the combination of advanced nanomaterials-mediated aPDT with other therapies, including targeted therapy, gas therapy, and multidrug resistance (MDR) therapy, is reviewed. Also, the concerns and possible solutions of nanomaterials-based aPDT are discussed. Overall, this review may provide theoretical basis and inspiration for the development of nanomaterials-based aPDT.
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Affiliation(s)
- Ruijiao Yan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Meijun Zhan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jingchen Xu
- Department of Dental Medical Center, China-Japan Friendship Hospital, Beijing 100029, China.
| | - Qiang Peng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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Praveen G, Krishnamoorthy K, Veeraraghavan VP, Jayaraman S. Antioxidant and Anti-Inflammatory Activity of the Ethanolic Extract of Euphorbia Hirta Leaf Extract: An In Vitro and In Silico Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1304-S1307. [PMID: 38882735 PMCID: PMC11174252 DOI: 10.4103/jpbs.jpbs_591_23] [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: 08/12/2023] [Accepted: 03/07/2024] [Indexed: 06/18/2024] Open
Abstract
Objectives This study presents the antioxidant and anti-inflammatory activity of the ethanolic extract of Euphorbia hirta leaf extract. Materials and Methods The antioxidant and anti-inflammatory activity of the extract was performed by in vitro assay. Our research employs a comprehensive approach combining experimental assays and computational simulations to assess the extract's potential bioactive components and their interactions with key biomolecules. Results The study's results demonstrated a progressive rise in the percentage of inhibition, which was dependent on the dosage, in both antioxidant and anti-inflammatory activities. This trend was observed for both the extract and the standard, encompassing concentrations ranging from 100 to 500 μg/ml. Conclusion The results showed that Euphorbia hirta's possesses antioxidant and anti-inflammatory activity, and this may contribute to a traditional medicinal. The discoveries of this study contribute to a deeper understanding of Euphorbia hirta's medicinal properties and its potential as a source of natural therapeutic agents.
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Affiliation(s)
- G Praveen
- Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Kaliselvi Krishnamoorthy
- Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Vishnu Priya Veeraraghavan
- Centre of Molecular Medicine and Diagnostics (COMManD), Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Selvaraj Jayaraman
- Centre of Molecular Medicine and Diagnostics (COMManD), Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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Nithin Krishna K, Krishnamoorthy K, Veeraraghavan VP, Jayaraman S. In vitro Biological Properties and in Silico Studies on Tinospora Cordifolia Stem Aqueous Extract. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1317-S1320. [PMID: 38882754 PMCID: PMC11174220 DOI: 10.4103/jpbs.jpbs_598_23] [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: 08/12/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 06/18/2024] Open
Abstract
Tinospora cordifolia, commonly known as "Giloy" or "Guduchi," is a medicinal plant with a rich history in traditional medicine systems. The aqueous extract of Tinospora cordifolia stems has garnered attention due to its reported pharmacological activities. This study aimed to investigate the in vitro biological properties of the aqueous extract and complement the findings with in silico studies to gain insights into potential molecular interactions. The Tinospora cordifolia stem aqueous extract was subjected to a battery of in vitro assays to assess its biological properties. Anti-inflammatory activity was evaluated using invitro assay. To complement the in vitro findings, in silico studies involving molecular docking analyses were conducted to predict potential interactions between the extract's constituents and relevant biomolecular targets. The in vitro evaluation revealed significant anti-inflammatory activity of the Tinospora cordifolia stem aqueous extract, as evidenced by its ability to suppress the production of pro-inflammatory cytokines. In silico studies provided insights into the molecular interactions between the extract's bioactive constituents and key inflammatory and antioxidant targets, further supporting the observed biological properties. The combined in vitro biological assays and in silico studies offer a comprehensive assessment of the Tinospora cordifolia stem aqueous extract's potential therapeutic properties. The demonstrated anti-inflammatory activities align with the traditional use of Tinospora cordifolia and suggest its potential in managing inflammatory and oxidative stress-related disorders. The in silico insights provide a molecular understanding of the extract's mode of action, strengthening the rationale for further investigation and development of natural products derived from Tinospora cordifolia for pharmaceutical and medicinal applications.
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Affiliation(s)
- K Nithin Krishna
- Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Kalaiselvi Krishnamoorthy
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Selvaraj Jayaraman
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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Nithin Krishna K, Krishnamoorthy K, Veeraraghavan VP, Jayaraman S. Phytochemical Screening and Anti-Inflammatory and Anti-Oxidant Activities of Spermacoce Hispida Ethanolic Extract. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1312-S1316. [PMID: 38882845 PMCID: PMC11174334 DOI: 10.4103/jpbs.jpbs_596_23] [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: 08/12/2023] [Revised: 11/01/2023] [Accepted: 11/17/2023] [Indexed: 06/18/2024] Open
Abstract
Background Spermacoce hispida, a medicinal plant from the Rubiaceae family, has garnered attention for its traditional use and reported therapeutic properties. This study aimed to investigate the phytochemical composition and assess the anti-inflammatory and anti-oxidant activities of the ethanolic extract derived from Spermacoce hispida. Materials and Methods Phytochemical screening of the ethanolic extract involved qualitative analysis to identify major phytoconstituents such as tannins, phenols, and acids. The anti-inflammatory activity was evaluated through in vitro assays, and anti-oxidant potential was assessed using established methods to measure scavenging activity against free radicals and reactive oxygen species. Results Phytochemical screening revealed the presence of various bioactive constituents in the Spermacoce hispida ethanolic extract, including acid, tannin, protein, and phenolic compounds. Furthermore, the extract exhibited potent anti-oxidant activity, as evidenced by its ability to scavenge free radicals and attenuate ROS-induced oxidative stress. Conclusion The findings of this study underscore the potential of Spermacoce hispida ethanolic extract as a source of bioactive compounds with anti-inflammatory and anti-oxidant properties. The presence of phytochemicals and the observed bioactivity support its traditional use and suggest potential therapeutic applications. These results contribute to the growing body of knowledge on natural products with health-promoting effects and provide a basis for further research aimed at developing pharmaceutical and medicinal interventions harnessing the benefits of Spermacoce hispida.
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Affiliation(s)
- K Nithin Krishna
- Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Kalaiselvi Krishnamoorthy
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Selvaraj Jayaraman
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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Mejía-Méndez JL, Navarro-López DE, Sanchez-Martinez A, Ceballos-Sanchez O, Garcia-Amezquita LE, Tiwari N, Juarez-Moreno K, Sanchez-Ante G, López-Mena ER. Lanthanide-Doped ZnO Nanoparticles: Unraveling Their Role in Cytotoxicity, Antioxidant Capacity, and Nanotoxicology. Antioxidants (Basel) 2024; 13:213. [PMID: 38397812 PMCID: PMC10886043 DOI: 10.3390/antiox13020213] [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: 12/28/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
This study used a sonochemical synthesis method to prepare (La, Sm)-doped ZnO nanoparticles (NPs). The effect of incorporating these lanthanide elements on the structural, optical, and morphological properties of ZnO-NPs was analyzed. The cytotoxicity and the reactive oxygen species (ROS) generation capacity of ZnO-NPs were evaluated against breast (MCF7) and colon (HT29) cancer cell lines. Their antioxidant activity was analyzed using a DPPH assay, and their toxicity towards Artemia salina nauplii was also evaluated. The results revealed that treatment with NPs resulted in the death of 10.559-42.546% and 18.230-38.643% of MCF7 and HT29 cells, respectively. This effect was attributed to the ability of NPs to downregulate ROS formation within the two cell lines in a dose-dependent manner. In the DPPH assay, treatment with (La, Sm)-doped ZnO-NPs inhibited the generation of free radicals at IC50 values ranging from 3.898 to 126.948 μg/mL. Against A. salina nauplii, the synthesized NPs did not cause death nor induce morphological changes at the tested concentrations. A series of machine learning (ML) models were used to predict the biological performance of (La, Sm)-doped ZnO-NPs. Among the designed ML models, the gradient boosting model resulted in the greatest mean absolute error (MAE) (MAE 9.027, R2 = 0.86). The data generated in this work provide innovative insights into the influence of La and Sm on the structural arrangement and chemical features of ZnO-NPs, together with their cytotoxicity, antioxidant activity, and in vivo toxicity.
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Affiliation(s)
- Jorge L. Mejía-Méndez
- Laboratory of Phytochemistry Research, Chemical Biological Sciences Department, Universidad de las Américas Puebla, Ex Hacienda Sta. Catarina Mártir S/N, San Andrés Cholula 72810, Mexico;
| | - Diego E. Navarro-López
- Tecnologicode Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan 45121, Mexico;
| | - Araceli Sanchez-Martinez
- Departamento de Ingeniería de Proyectos, Centro Universitario de Ciencias Exactas e Ingenierías (CUCEI), Universidad de Guadalajara, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan 45157, Mexico; (A.S.-M.); (O.C.-S.)
| | - Oscar Ceballos-Sanchez
- Departamento de Ingeniería de Proyectos, Centro Universitario de Ciencias Exactas e Ingenierías (CUCEI), Universidad de Guadalajara, Av. José Guadalupe Zuno # 48, Industrial Los Belenes, Zapopan 45157, Mexico; (A.S.-M.); (O.C.-S.)
| | - Luis Eduardo Garcia-Amezquita
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada No 2501, Monterrey 64849, Mexico;
| | - Naveen Tiwari
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS), University of Santiago de Compostela, Rúa Jenaro de La Fuente S/N, 15782 Santiago de Compostela, Spain
| | - Karla Juarez-Moreno
- Centro de Física Aplicada y Tecnología Avanzada (CFATA), Universidad Nacional Autónoma de México (UNAM), Querétaro 76230, Mexico
| | - Gildardo Sanchez-Ante
- Tecnologicode Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan 45121, Mexico;
| | - Edgar R. López-Mena
- Tecnologicode Monterrey, Escuela de Ingeniería y Ciencias, Av. Gral. Ramón Corona No 2514, Colonia Nuevo México, Zapopan 45121, Mexico;
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Choi V, Rohn JL, Stoodley P, Carugo D, Stride E. Drug delivery strategies for antibiofilm therapy. Nat Rev Microbiol 2023; 21:555-572. [PMID: 37258686 DOI: 10.1038/s41579-023-00905-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2023] [Indexed: 06/02/2023]
Abstract
Although new antibiofilm agents have been developed to prevent and eliminate pathogenic biofilms, their widespread clinical use is hindered by poor biocompatibility and bioavailability, unspecific interactions and insufficient local concentrations. The development of innovative drug delivery strategies can facilitate penetration of antimicrobials through biofilms, promote drug dispersal and synergistic bactericidal effects, and provide novel paradigms for clinical application. In this Review, we discuss the potential benefits of such emerging techniques for improving the clinical efficacy of antibiofilm agents, as well as highlighting the existing limitations and future prospects for these therapies in the clinic.
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Affiliation(s)
- Victor Choi
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
| | - Jennifer L Rohn
- Department of Renal Medicine, Centre for Urological Biology, Division of Medicine, University College London, London, UK
| | - Paul Stoodley
- Departments of Microbial Infection and Immunity, Microbiology and Orthopaedics, The Ohio State University, Columbus, OH, USA
- Department of Mechanical Engineering, National Centre for Advanced Tribology at Southampton (nCATS) and National Biofilm Innovation Centre (NBIC), University of Southampton, Southampton, UK
| | - Dario Carugo
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Eleanor Stride
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, UK.
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
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Ashery MH, Elsehly EM, Elnouby M, El-Maghraby EM. Controlled synthesis of MWCNTs/V 2O 5 nanocomposite by hydrothermal approach for adsorption and photodegradation processes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:392-407. [PMID: 37522441 PMCID: wst_2023_217 DOI: 10.2166/wst.2023.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
The current paper outlines the synthesis of pristine multi-wall carbon nanotubes (PMWCNTs)/Vanadium pentoxide V2O5 and functionalized multi-wall carbon nanotubes (FMWCNTs)/V2O5 nanocomposite for photocatalytic applications. The FMWCNTs were obtained by the oxidizing agents (H2SO4 and HNO3) to introduce the oxygenated functional groups. The samples were synthesized by hydrothermal approach and investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy analysis (EDX), and Fourier transform infrared spectroscopy (FTIR). The photocatalytic activity of multi-wall carbon nanotubes (MWCNTs), FMWCNTs/V2O5, and PMWCNTs/V2O5 nanocomposites was assessed via methylene blue (MB) degradation from water under visible light. The results demonstrated that the removal efficiency of MB by PMWCNTs, FMWCNTs/V2O5, and PMWCNTs/V2O5 could reach 90.4, 98.9, and 94.9%, respectively. It was noticed that MB adsorption and photodegradation tend to follow pseudo-second-order kinetics. The mechanism of MB photodegradation by FMWCNTs/V2O5 nanoparticles was explained. MWCNTs/V2O5 nanocomposites will allow further applications to remove other dyes and contaminants from wastewater.
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Affiliation(s)
- Marwa H Ashery
- Physics Department, Faculty of Science, Damanhour University, Damanhour 22516, Egypt E-mail: ;
| | - E M Elsehly
- Physics Department, Faculty of Science, Damanhour University, Damanhour 22516, Egypt
| | - Mohamed Elnouby
- Nanomaterials and Composites Research Department, Advanced Technology and New Materials Research Institute, City for Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria 21934, Egypt
| | - E M El-Maghraby
- Physics Department, Faculty of Science, Damanhour University, Damanhour 22516, Egypt
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Liu Z, Yu X, Zhou Z, Zhou J, Shuai X, Lin Z, Chen H. 3D ZnO/Activated Carbon Alginate Beads for the Removal of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes. Polymers (Basel) 2023; 15:polym15092215. [PMID: 37177361 PMCID: PMC10180892 DOI: 10.3390/polym15092215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/06/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023] Open
Abstract
The worldwide prevalence of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) have become one of the most urgent issues for public health. Thus, it is critical to explore more sustainable methods with less toxicity for the long-term removal of both ARB and ARGs. In this study, we fabricated a novel material by encapsulating zinc oxide (ZnO) nanoflowers and activated carbon (AC) in an alginate biopolymer. When the dosage of ZnO was 1.0 g (≈2 g/L), the composite beads exhibited higher removal efficiency and a slight release of Zn2+ in water treatment. Fixed bed column experiments demonstrated that ZnO/AC alginate beads had excellent removal capacities. When the flow rate was 1 mL/min, and the initial concentration was 107 CFU/mL, the removal efficiency of ARB was 5.69-log, and the absolute abundance of ARGs was decreased by 2.44-2.74-log. Moreover, the mechanism demonstrated that ZnO significantly caused cell lysis, cytoplasmic leakage, and the increase of reactive oxygen species induced subsequent oxidative stress state. These findings suggested that ZnO/AC alginate beads can be a promising material for removing ARB and ARGs from wastewater with eco-friendly and sustainable properties.
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Affiliation(s)
- Zhe Liu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xi Yu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhenchao Zhou
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jinyu Zhou
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xinyi Shuai
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zejun Lin
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hong Chen
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- International Cooperation Base of Environmental Pollution and Ecological Health, Science and Technology Agency of Zhejiang, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China
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A novel Ppy/ZnO@Co ternary nanocomposite with enhanced visible light-driven photocatalytic performance. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Preparation of S-Scheme g-C3N4/ZnO Heterojunction Composite for Highly Efficient Photocatalytic Destruction of Refractory Organic Pollutant. Catalysts 2023. [DOI: 10.3390/catal13030485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
In this study, graphitic carbon nitride (g-C3N4)-based ZnO heterostructure was synthesized using a facile calcination method with urea and zinc nitrate hexahydrate as the initiators. According to the scanning electron microscopic (SEM) images, spherical ZnO particles can be seen along the g-C3N4 nanosheets. Additionally, the X-ray diffraction (XRD) analysis reveals the successful synthesis of the g-C3N4/ZnO. The photocatalytic activity of the synthesized catalyst was tested for the decolorization of crystal violet (CV) as an organic refractory contaminant. The impacts of ZnO molar ratio, catalyst amount, CV concentration, and H2O2 concentration on CV degradation efficiency were investigated. The obtained outcomes conveyed that the ZnO molar ratio in the g-C3N4 played a prominent role in the degradation efficiency, in which the degradation efficiency reached 95.9% in the presence of 0.05 mmol of ZnO and 0.10 g/L of the catalyst in 10 mg/L of CV through 120 min under UV irradiation. Bare g-C3N4 was also tested for dye decolorization, and a 76.4% dye removal efficiency was obtained. The g-C3N4/ZnO was also tested for adsorption, and a 32.3% adsorption efficiency was obtained. Photocatalysis, in comparison to adsorption, had a dominant role in the decolorization of CV. Lastly, the results depicted no significant decrement in the CV degradation efficiency in the presence of the g-C3N4/ZnO photocatalyst after five consecutive runs.
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Isik Z, Bouchareb R, Arslan H, Özdemir S, Gonca S, Dizge N, Balakrishnan D, Prasad SVS. Green synthesis of iron oxide nanoparticles derived from water and methanol extract of Centaurea solstitialis leaves and tested for antimicrobial activity and dye decolorization capability. ENVIRONMENTAL RESEARCH 2023; 219:115072. [PMID: 36529334 DOI: 10.1016/j.envres.2022.115072] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
In this research, nanoparticles derived from water extract of Centaurea solstitialis leaves were used as green adsorbent in Fenton reaction for Reactive Red 180 (RR180) and Basic Red 18 (BR18) dyes removal. At optimum operating conditions, nanoparticles proved high performance in the tested dyes removal with more than 98% of removal elimination. The free-radical scavenging, DNA nuclease, biofilm inhibition capability, antimicrobial activity, microbial cell viability, and antimicrobial photodynamic therapy activities of the iron oxide nanoparticles (FeO-NPs) derived from water and methanol extract of plant were investigated. Each of the following analysis: SEM-EDX, XRD, and Zeta potential was implemented for the prepared NPs characterization and to describe their morphology, composition and its behavior in an aqueous solution, respectively. It was found that, the DPPH scavenging activities increased when the amount of nanoparticles increased. The highest radical scavenging activity achieved with FeO-NPs derived from water extract of plant as 97.41% at 200 mg/L. The new green synthesized FeO-NPs demonstrated good DNA cleavage activity. FeO-NPs showed good in vitro antimicrobial activities against human pathogens. The results showed that both synthesized FeO-NPs displayed 100% antimicrobial photodynamic therapy activity after LED irradiation. The water extract of FeO-NPs and methanol extract of FeO-NPs also showed a significant biofilm inhibition.
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Affiliation(s)
- Zelal Isik
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey
| | - Raouf Bouchareb
- Department of Environmental Engineering, Process Engineering Faculty, Saleh Boubnider University, Constantine, 25000, Algeria
| | - Hudaverdi Arslan
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey
| | - Sadin Özdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, Mersin, 33343, Turkey
| | - Serpil Gonca
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Mersin, Mersin, 33343, Turkey
| | - Nadir Dizge
- Department of Environmental Engineering, Mersin University, Mersin, 33343, Turkey.
| | - Deepanraj Balakrishnan
- College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia.
| | - Sista Venkata Surya Prasad
- Department of Electronics and Communication Engineering, MLR Institute of Technology, Hyderabad, 500043, India.
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Xin G, Ge C, Gao Q, Zhang J, Nie Y, Yang Y, Zhang D, Li H, Ren Y. Effects of soil ingestion on nutrient digestibility and rumen bacterial diversity of Tibetan sheep. CHEMOSPHERE 2022; 308:136000. [PMID: 35973501 DOI: 10.1016/j.chemosphere.2022.136000] [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: 07/01/2022] [Revised: 07/26/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Tibetan sheep (Ovis aries) are the most numerous livestock in Tibet Plateau pasture ecosystem and have strong ecological adaptability. In the natural grazing system, soil as a natural nutrient carrier and involuntarily or intentionally ingested by Tibetan sheep contribute as an important feed approach. However, quantifying the dosages of soil ingestion for the Tibetan sheep still needs to be clarified. This study aims to characterize nutrient digestibility and rumen bacterial communities by Tibetan sheep in response to different levels of soil ingestion. Thirty sheep were selected and divided into five treatments with soil ingestion (0%, 5%, 10%, 15%, and 20%). The conclusion demonstrated that soil ingestion improved the dry matter digestibility (59.3-62.97%), ether extract (59.79-67.87%) and crude protein (59.81-66.47%) digestibility, particularly 10% soil ingestion has highest nutrient digestibility. The rumen fermentation environment adjusted after soil ingestion by improvement of pH, ammonia nitrogen and volatile fatty acids. Appropriate soil ingestion reduced the bacterial diversity ranged from 946 to 1000 OUTs as compared control (1012), and the rumen bacterial community dominant by typical fiber digestion associated Firmicutes (47.48-53.56%), Bacteroidetes (34.93-40.02%) and Fibrobacteres (4.36-9.27%). Especially, the highest digestible feed capacity and stronger environment adaptability present in 10% soil ingestion Tibetan sheep. Overall, soil ingestion stimulates rumen metabolism by creating a favorable environment for microbial fermentation, improved bacterial community abundance associated with cellulose and saccharide degradation, contribute nutrient digestibility and growth performance of Tibetan sheep.
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Affiliation(s)
- Guosheng Xin
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China; School of Life Science, Lanzhou University, Yinchuan, 750021, China.
| | - Cuicui Ge
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China
| | - Qiaoxian Gao
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China
| | - Juan Zhang
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; Agricultural College, Ningxia University, Yinchuan, 750021, China
| | - Yumin Nie
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Economics and Management, Ningxia University, Yinchuan, 750021, China
| | - Yi Yang
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China
| | - Dongtao Zhang
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China
| | - Hao Li
- Ningxia Feed Engineering Technology Research Center, Ningxia University, Yinchuan, 750021, China; School of Life Science, Ningxia University, Yinchuan, 750021, China
| | - Yali Ren
- Ningxia Hiby Analysis & Test Institute, Yinchuan, 750021, China
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