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Ismail E, Mohamed A, Elzwawy A, Maboza E, Dhlamini MS, Adam RZ. Comparative Study of Callistemon citrinus (Bottlebrush) and Punica granatum (Pomegranate) Extracts for Sustainable Synthesis of Silver Nanoparticles and Their Oral Antimicrobial Efficacy. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:974. [PMID: 38869599 PMCID: PMC11173488 DOI: 10.3390/nano14110974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/28/2024] [Accepted: 05/31/2024] [Indexed: 06/14/2024]
Abstract
A comparative study was applied to investigate the potential of Callistemon citrinus (bottlebrush) flower extract (BBE) and Punica granatum (pomegranate) peel extracts (PPE) for the sustainable synthesis of the silver nanoparticles, Ag-BBE and Ag-PPE, respectively. The synthesis process of Ag NPs using the selected extracts was applied under optimized conditions. Hence, the effect of the selected plant's type on the different characteristics of the synthesized green Ag NPs was investigated. The UV-Vis spectroscopy revealed the presence of the characteristic silver peaks at 419 and 433 nm of the Ag-BBE and Ag-PPE, respectively. The XRD spectra reported the fcc phase formation of Ag NPs. The TEM results highlighted the morphological features of the synthesized Ag NPs. with a size range of 20-70 nm, and with 10-30 nm for Ag-BBE and Ag-PPE, correspondingly. The Raman spectra revealed characteristic silver bands in the Ag-PPE and reflected some bands related to the natural extract in the Ag-BBE sample. The antimicrobial activity and statistical analysis investigation were conducted against four selected oral pathogens (Staphylococcus aureus (SA), Candida albicans (CA), Staphylococcus epidermidis (S. epi), and Enterococcus faecalis (EF)). Both tested extracts, BBE, and PPE, revealed potential effectivity as reducing and capping agents for Ag NP green synthesis. However, the synthesized NPs demonstrated different features, depending on the used extract, reflecting the influence of the plant's biomolecules on the nanoparticles' properties.
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Affiliation(s)
- Enas Ismail
- Department of Prosthodontics, Faculty of Dentistry, University of the Western Cape, Cape Town 7505, South Africa
- Physics Department, Faculty of Science (Girl’s Branch), Al Azhar University, Nasr City 11884, Cairo, Egypt
| | - Abubaker Mohamed
- Department of Prosthodontics, Faculty of Dentistry, University of the Western Cape, Cape Town 7505, South Africa
| | - Amir Elzwawy
- Ceramics Department, Advanced Materials Technology and Mineral Resources Research Institute, National Research Centre (NRC), 33 El Bohouth St., Dokki, Giza 12622, Egypt
| | - Ernest Maboza
- Oral and Dental Research Laboratory, Faculty of Dentistry, University of the Western Cape, Cape Town 7505, South Africa
| | | | - Razia Z. Adam
- Department of Prosthodontics, Faculty of Dentistry, University of the Western Cape, Cape Town 7505, South Africa
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Pei L, Wen-Hao Z, Yang-Ping S, Qiang W, Yifan K, Shiyan W, Jilin X, Bilal M, Xiao-yan Z, Zhong-Xing W, Min S, Xiang-Qian L, Shuai H. Characterization, antimicrobial, and antioxidant potentialities of first-time isolated silver nanoparticles synthesizing protein secreted by Lysinibacillus sphaericus. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Bhatia D, Mittal A, Malik DK. Antimicrobial potential and in vitro cytotoxicity study of polyvinyl pyrollidone-stabilised silver nanoparticles synthesised from Lysinibacillus boronitolerans. IET Nanobiotechnol 2021; 15:427-440. [PMID: 34694715 PMCID: PMC8675779 DOI: 10.1049/nbt2.12054] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/12/2021] [Accepted: 04/11/2021] [Indexed: 11/20/2022] Open
Abstract
The main emphasis herein is on the eco‐friendly synthesis and assessment of the antimicrobial potential of silver nanoparticles (AgNPs) and a cytotoxicity study. Silver nanoparticles were synthesised by an extracellular method using bacterial supernatant. Biosynthesised silver nanoparticles were characterised by UV‐vis spectroscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy, dynamic light scattering, and zeta potential analysis. The synthesised silver nanoparticles exhibited a characteristic peak at 420 nm. TEM analysis depicted the spherical shape and approximately 20 nm size of nanoparticles. Silver nanoparticles carry a charge of −33.75 mV, which confirms their stability. Biogenic polyvinyl pyrrolidone‐coated AgNPs exhibited significant antimicrobial effects against all opportunistic pathogens (Gram‐positive and Gram‐negative bacteria, and fungi). Silver nanoparticles equally affect the growth of both Gram‐positive and Gram‐negative bacteria, with a maximum inhibition zone observed at 22 mm and a minimum at 13 mm against Pseudomonas aeruginosa and Fusarium graminearum, respectively. The minimum inhibitory concentration (MIC) of AgNPs against P. aeruginosa and Staphylococcus aureus was recorded at between 15 and 20 μg/ml. Synthesised nanoparticles exhibited a significant synergistic effect in combination with conventional antibiotics. Cytotoxicity estimates using C2C12 skeletal muscle cell line via 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide (MTT) test and lactate dehydrogenase assay were directly related to the concentration of AgNPs and length of exposure. On the basis of the MTT test, the IC50 of AgNPs for the C2C12 cell line was approximately 5.45 μg/ml concentration after 4 h exposure.
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Affiliation(s)
- Divya Bhatia
- University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India
| | - Ashwani Mittal
- Institute of Integrated and Honors Studies, Kurukshetra University, Kurukshetra, India
| | - Deepak Kumar Malik
- University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India
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Sivanesan I, Gopal J, Muthu M, Shin J, Mari S, Oh J. Green Synthesized Chitosan/Chitosan Nanoforms/Nanocomposites for Drug Delivery Applications. Polymers (Basel) 2021; 13:2256. [PMID: 34301013 PMCID: PMC8309384 DOI: 10.3390/polym13142256] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022] Open
Abstract
Chitosan has become a highlighted polymer, gaining paramount importance and research attention. The fact that this valuable polymer can be extracted from food industry-generated shell waste gives it immense value. Chitosan, owing to its biological and physicochemical properties, has become an attractive option for biomedical applications. This review briefly runs through the various methods involved in the preparation of chitosan and chitosan nanoforms. For the first time, we consolidate the available scattered reports on the various attempts towards greens synthesis of chitosan, chitosan nanomaterials, and chitosan nanocomposites. The drug delivery applications of chitosan and its nanoforms have been reviewed. This review points to the lack of systematic research in the area of green synthesis of chitosan. Researchers have been concentrating more on recovering chitosan from marine shell waste through chemical and synthetic processes that generate toxic wastes, rather than working on eco-friendly green processes-this is projected in this review. This review draws the attention of researchers to turn to novel and innovative green processes. More so, there are scarce reports on the application of green synthesized chitosan nanoforms and nanocomposites towards drug delivery applications. This is another area that deserves research focus. These have been speculated and highlighted as future perspectives in this review.
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Affiliation(s)
- Iyyakkannu Sivanesan
- Department of Bioresources and Food Science, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 05029, Korea
| | - Judy Gopal
- Laboratory of Neo Natural Farming, Chunnampet, Tamil Nadu 603 401, India
| | - Manikandan Muthu
- Laboratory of Neo Natural Farming, Chunnampet, Tamil Nadu 603 401, India
| | - Juhyun Shin
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea
| | - Selvaraj Mari
- Department of Chemistry, Guru Nanak College, Chennai 600 042, India
| | - Jaewook Oh
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea
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Jacinto MJ, Silva VC, Valladão DMS, Souto RS. Biosynthesis of magnetic iron oxide nanoparticles: a review. Biotechnol Lett 2020; 43:1-12. [PMID: 33156459 DOI: 10.1007/s10529-020-03047-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 11/02/2020] [Indexed: 11/25/2022]
Abstract
Nanoparticles promise to revolutionize the way we think of ordinary materials thanks to the new features such small structures exhibit which include strength, durability, optical and magnetics properties. Magnetic iron oxide nanoparticles (IONPs) are a prominent class of NMs because of their potential application in magnetic separation, hyperthermia, targeted drug delivery, and catalysis. Most synthetic nanoparticulate platforms rely on the use of tough chemical procedures associated with unfriendly, harmful and costly reactants. For this reason, bio-inspired approaches have become the most successful alternatives to fabricate nanomaterials in an "eco-friendly" manner, and many bio-protocols that make use of substrates from plants and microorganisms have been successfully applied in the synthesis of magnetic IONPs. In this review, the main biosynthesis protocols applied in the synthesis of iron oxide nanoparticles are discussed. A discussion on the challenges for a second stage perspective which would be a large scale production is also given.
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Affiliation(s)
- M J Jacinto
- Universidade Federal de Mato Grosso, Departamento de Química, Avenida Fernando Correa da Costa S/N-Cidade Universitária, Cuiabá, Mato Grosso, 78060-900, Brazil.
| | - V C Silva
- Universidade Federal de Mato Grosso, Departamento de Química, Avenida Fernando Correa da Costa S/N-Cidade Universitária, Cuiabá, Mato Grosso, 78060-900, Brazil
| | - D M S Valladão
- Universidade Federal de Mato Grosso, Departamento de Química, Avenida Fernando Correa da Costa S/N-Cidade Universitária, Cuiabá, Mato Grosso, 78060-900, Brazil
| | - R S Souto
- Universidade Federal de Mato Grosso, Departamento de Química, Avenida Fernando Correa da Costa S/N-Cidade Universitária, Cuiabá, Mato Grosso, 78060-900, Brazil
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Onajobi IB, Idowu EO, Adeyemi JO, Samson OJ, Ogunyinka PI, Fagade OE. In vitro antibacterial activities and molecular characterization of bacterial species isolated from farmlands against selected pathogens. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 27:e00513. [PMID: 32923377 PMCID: PMC7475235 DOI: 10.1016/j.btre.2020.e00513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 06/09/2020] [Accepted: 07/31/2020] [Indexed: 04/12/2023]
Abstract
This study aims to screen bacterial isolates from Olabisi Onabanjo University Farmland for antibacterial activity against pathogenic microorganisms. Agar well diffusion method was used. Isolates were identified molecularly. Chi-square test revealed significant association between isolates, antibacterial activity with likelihood p-value = 0.000 and 5% significant level. Six among thirty-five isolates exhibited antibacterial activity against the test pathogenic species. A greater antibacterial activity (50 % inhibition) was observed in Lysinibacillus sphearicus strain PRE16. It inhibited the growth of Bacillus subtilis, Staphylococcus aureus and Escherichia coli by 23.00 ± 2.00, 18.00 ± 2.00 and 20.00 ± 4.00 respectively. DNA sequencing revealed antagonist isolates as Bacillus sp. BCN2, Brochothrix thermosphacta strain P30C4, Bacillus aryabhattai strain KNUC205, Alcaligenes faecalis strain KEM24, Bacillus arsenicus strain CSD05 and Lysinibacillus sphaericus strain PRE16. Phylogenetic analysis revealed close relatedness of most isolates with Bacillus species strains. These strains are suggested to be effective for the discovery of new antibacterial agents.
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Affiliation(s)
- Ismail B. Onajobi
- Department of Microbiology, Faculty of Science, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - Esther O. Idowu
- Department of Microbiology, Faculty of Science, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - Jamiu O. Adeyemi
- Department of Microbiology, Faculty of Science, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - Oyindamola J. Samson
- Department of Microbiology, Faculty of Science, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - Peter I. Ogunyinka
- Department of Mathematical Sciences, Faculty of Science, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - Obasola E. Fagade
- Department of Microbiology, Faculty of Science, University of Ibadan, Nigeria
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El-Bendary MA, Afifi SS, Moharam ME, Abo El-Ola SM, Salama A, Omara EA, Shaheen MNF, Hamed AA, Gawdat NA. Biosynthesis of silver nanoparticles using isolated Bacillus subtilis: characterization, antimicrobial activity, cytotoxicity, and their performance as antimicrobial agent for textile materials. Prep Biochem Biotechnol 2020; 51:54-68. [PMID: 32701049 DOI: 10.1080/10826068.2020.1789992] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Silver nanoparticles (AgNPs) have unique properties and a large range of applications. Biosynthesis of stable AgNPs using the extracellular filtrate of Bacillus subtilis was proved by the characteristic surface plasmon resonance at about 420-430 nm. They were polycrystalline with spherical, hexagonal, and irregular shapes and they were negatively charged (-40 mV) with an average diameter of 20 nm. FTIR spectrum confirmed the presence of protein molecules coating AgNPs. The optimum conditions for the synthesis of tested AgNPs were 1:6 filtrate dilution, 1 mM AgNO3, pH 7, 30 °C , 48 h contact time under static and illuminating conditions. The synthesized AgNPs showed antibacterial activities against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus cereus, and Salmonella typhi, antifungal activity against Candida albicans and antiviral activity against rotavirus. Also, they showed potent cytotoxic effects on lung and hepatic carcinoma human cell lines. Meanwhile, the acute toxicity study against mice showed no significant changes in hematological, biochemical, and histological parameters of AgNPs treated mice. They also showed mild hepatoprotective effect in thioacetamide (TAA) - induced hepatic fibrosis in rats. AgNPs treated textiles fabrics showed high antimicrobial activities against different pathogenic microorganisms as well as UV protection adequacy.
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Affiliation(s)
- Magda A El-Bendary
- Department of Microbial Chemistry, Genetic Engineering and Biotechnology Research Division, National Research Centre, Giza, Egypt
| | - Salwa S Afifi
- Department of Microbiology and Immunology, Faculty of Pharmacy for Girls, Al-Azhar University, Cairo, Egypt
| | - Maysa E Moharam
- Department of Microbial Chemistry, Genetic Engineering and Biotechnology Research Division, National Research Centre, Giza, Egypt
| | - Samiha M Abo El-Ola
- Department of Protein and Manmade Fibre, Textile Industries Research Division, National Research Centre, Giza, Egypt
| | - Abeer Salama
- Department of Pharmacology, National Research Centre, Giza, Egypt
| | - Enayat A Omara
- Department of Pathology, National Research Centre, Giza, Egypt
| | - Mohamed N F Shaheen
- Environmental Virology Lab., Department of Water Pollution Research, Environmental Research Division, National Research Centre, Giza, Egypt
| | - Ahmed A Hamed
- Department of Microbial Chemistry, Genetic Engineering and Biotechnology Research Division, National Research Centre, Giza, Egypt
| | - Noha A Gawdat
- Department of Microbial Chemistry, Genetic Engineering and Biotechnology Research Division, National Research Centre, Giza, Egypt
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Kalantari K, Afifi AM, Moniri M, Moghaddam AB, Kalantari A, Izadiyan Z. Autoclave-assisted synthesis of AgNPs in Z. officinale extract and assessment of their cytotoxicity, antibacterial and antioxidant activities. IET Nanobiotechnol 2019; 13:262-268. [PMID: 31053688 PMCID: PMC8676182 DOI: 10.1049/iet-nbt.2018.5066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 10/01/2018] [Accepted: 10/24/2018] [Indexed: 12/17/2023] Open
Abstract
In this study, the authors synthesised silver nanoparticles (AgNPs) using autoclave as a simple, unique and eco-friendly approach. The effect of Zingiber officinale extract was evaluated as a reducing and stabiliser agent. According to transmission electron microscopy results, the AgNPs were in the spherical shape with a particle size of ∼17 nm. The biomedical properties of AgNPs as antibacterial agents and free radical scavenging activity were estimated. Synthesised AgNPs showed significant 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging. Strong bactericidal activity was shown by the AgNPs on Gram-positive and Gram-negative bacteria. A maximum inhibition zone of ∼14 mm was obtained for epidermidis at a concentration of 60 μg/ml for sample fabricated at 24 h. The AgNPs also showed a significant cytotoxic effect against MCF-7 breast cancer cell lines with an half maximal inhibitory concentration value of 62 μg/ml in 24 h by the MTT assay. It could be concluded that Z. officinale extract can be used effectively in the production of potential antioxidant and antimicrobial AgNPs for commercial application.
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Affiliation(s)
- Katayoon Kalantari
- Department of Mechanical Engineering, Faculty of Engineering, Centre of Advanced Materials (CAM), University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Amalina M Afifi
- Department of Mechanical Engineering, Faculty of Engineering, Centre of Advanced Materials (CAM), University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Mona Moniri
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Amin Boroumand Moghaddam
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Alireza Kalantari
- Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia
| | - Zahra Izadiyan
- Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia
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Biological Synthesis of Nanoparticles by Different Groups of Bacteria. NANOTECHNOLOGY IN THE LIFE SCIENCES 2019. [DOI: 10.1007/978-3-030-16383-9_3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Shehzad A, Qureshi M, Jabeen S, Ahmad R, Alabdalall AH, Aljafary MA, Al-Suhaimi E. Synthesis, characterization and antibacterial activity of silver nanoparticles using Rhazya stricta. PeerJ 2018; 6:e6086. [PMID: 30588401 PMCID: PMC6301278 DOI: 10.7717/peerj.6086] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/08/2018] [Indexed: 12/01/2022] Open
Abstract
Background Green synthesis of metallic nanoparticles has gained significant attention in the field of nanomedicine as an environment-friendly and cost-effective alternative in comparison with other physical and chemical methods. Several metals such as silver, gold, iron, titanium, zinc, magnesium and copper have been subjected to nanoformulation for a wide range of useful applications. Silver nanoparticles (AgNPs) are playing a major role in the field of nanomedicine and nanotechnology. They are widely used in diagnostics, therapeutic and pharmaceutical industries. Studies have shown potential inhibitory antimicrobial, anti-inflammatory and antiangiogenesis activities of AgNPs. Methods AgNPs have been synthesized using silver nitrate and methanolic root extract of Rhazya stricta that belongs to the Apocynaceae family. Stability and dispersion of nanoparticles were improved by adding xylitol. Synthesized nanoparticles were characterized by UV–Vis spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometer and Fourier transforms infrared spectroscopy. Furthermore, the antibacterial effect of the plant extract and the nanoparticles were evaluated against gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacteria. Results The average size of AgNPs synthesized, was 20 nm with the spherical shape. Rhazya stricta based nanoparticles exhibited improved antibacterial activity against both gram-positive and negative strains.
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Affiliation(s)
- Adeeb Shehzad
- Department of Biomedical Engineering and Sciences, School of Mechanical and Manufacturing Engineering, National University of Science and Technology, Islamabad, Pakistan
| | - Munibah Qureshi
- Department of Biomedical Engineering and Sciences, School of Mechanical and Manufacturing Engineering, National University of Science and Technology, Islamabad, Pakistan
| | - Saima Jabeen
- Department of Biomedical Engineering and Sciences, School of Mechanical and Manufacturing Engineering, National University of Science and Technology, Islamabad, Pakistan
| | - Rizwan Ahmad
- College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Amira H Alabdalall
- Department of Biology, College of Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | | | - Ebtesam Al-Suhaimi
- Department of Biology, College of Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.,Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Fabrication and validation of silver nanoparticles from cocoon extract of silk worm Bombyx mori. L. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Ranjani A, Gopinath PM, Ananth S, Narchonai G, Santhanam P, Thajuddin N, Dhanasekaran D. Multidimensional dose–response toxicity exploration of silver nanoparticles from Nocardiopsis flavascens RD30. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0824-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ramachandraiah K, Gnoc NTB, Chin KB. Biosynthesis of Silver Nanoparticles from Persimmon Byproducts and Incorporation in Biodegradable Sodium Alginate Thin Film. J Food Sci 2017; 82:2329-2336. [PMID: 28885708 DOI: 10.1111/1750-3841.13865] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 07/25/2017] [Accepted: 08/02/2017] [Indexed: 11/30/2022]
Abstract
Fruit industrial wastes such as persimmon seed, peel, and calyx were used to synthesize silver nanoparticles (AgNPs) and their antioxidant activities were compared with byproduct powders having different granularities. The AgNPs were incorporated in sodium alginate thin films and transparency and mechanical properties of the films was analyzed. Persimmon byproduct AgNPs were characterized by ultraviolet-visible spectroscopy, dynamic light scattering, X-ray diffraction, energy-dispersive x-ray spectroscopy, and scanning electron microscopy. The byproduct AgNPs displayed higher antioxidant activities than powders of different granularities (P < 0.05). Fabrication of alginate thin films incorporating byproduct AgNPs resulted in improved transparency (P < 0.05). The incorporation of persimmon byproduct AgNPs with excellent antioxidant activities into sodium alginate thin films did not diminish the mechanical properties of the thin films. Therefore, fruit industrial waste such as persimmon byproducts could be used to derive AgNPs and could be incorporated into biodegradable alginate thin films, with numerous applications including food packaging. PRACTICAL APPLICATION Fruit industrial wastes such as persimmon seed, peel, and calyx were used to synthesize silver nanoparticles (AgNPs) which were incorporated in sodium alginate thin films. This study evaluated the antioxidant activities and mechanical properties of the films that could be useful in the manufacture of food packaging using biodegradable films.
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Affiliation(s)
- Karna Ramachandraiah
- Dept. of Animal Science and Functional Food Research Center, Chonnam Natl. Univ., Gwangju, 61186, Korea
| | - Nguyen Trong Bao Gnoc
- Dept. of Animal Science and Functional Food Research Center, Chonnam Natl. Univ., Gwangju, 61186, Korea
| | - Koo Bok Chin
- Dept. of Animal Science and Functional Food Research Center, Chonnam Natl. Univ., Gwangju, 61186, Korea
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Bhatia D, Mittal A, Malik DK. Antimicrobial activity of PVP coated silver nanoparticles synthesized by Lysinibacillus varians. 3 Biotech 2016; 6:196. [PMID: 28330268 PMCID: PMC5014767 DOI: 10.1007/s13205-016-0514-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 08/29/2016] [Indexed: 12/31/2022] Open
Abstract
Emergence of resistant microbes to conventional antibiotics and increased emphasis on health-care costs has raised the concern for the development of new effective antimicrobial reagents. Silver nanoparticles being an excellent broad-spectrum antibacterial agent could be considered as a suitable alternative for existing antibiotic. This study demonstrates the extra-cellular synthesis of stable silver nanoparticles using supernatant of Lysinibacillus varians. The synthesized silver nanoparticles were characterized by using UV-visible spectrum analysis, X-ray diffraction, Transmission electron microscopy (TEM) and FT-IR analysis. The synthesized silver nanoparticles showed a peak around 420 nm. TEM analysis revealed that the size of silver nanoparticles was in the range of 10-20 nm. Silver nanoparticles carry a charge of -39.86 mV, which confirmed the stability of silver nanoparticles. The biologically synthesized silver nanoparticles showed antimicrobial activity against Gram-positive, Gram-negative bacteria and fungi. Therefore, the current study reveals an efficient and eco-friendly synthesis of silver nanoparticles by L. varians with potent antimicrobial activity.
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RETRACTED ARTICLE: Biosynthesis of colloidal silver nanoparticles: Their characterization and potential antibacterial activity. Macromol Res 2016. [DOI: 10.1007/s13233-016-4086-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Characterization of antibiotic resistant and enzyme producing bacterial strains isolated from the Arabian Sea. 3 Biotech 2016; 6:28. [PMID: 28330094 PMCID: PMC4711286 DOI: 10.1007/s13205-015-0332-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 06/27/2015] [Indexed: 11/24/2022] Open
Abstract
Marine bacteria are known to produce many bioactive molecules and extracellular enzymes of commercial importance. We have investigated the bacterial diversity of the coastal area of Karwar, Karnataka State, India. Among these bacterial isolates, five bacterial strains were selected and identified by their morphological, biochemical characteristics and phylogenetic analysis based on 16S rRNA gene sequences. The identified bacterial isolates, Bacillus toyonensis PNTB1, Lysinibacillus sphaericus PTB, Vibrio vulnificus PMD, Shewanella MPTDBS, and Pseudomonas chlororaphis PNTB were characterized for their tolerance to salt and antibiotics. Vibrio vulnificus PMD showed maximum tolerance at higher concentration of salt than other bacteria. These bacterial strains were screened for the production of extracellular enzymes such as lipase, cellulase, pectinase, tannase, chitinase, and l-glutaminase. Vibrio vulnificus showed maximum production of l-glutaminase enzyme. Bacillus toyonensis PNTB1 shows lipase, CM-cellulase and chitinase activities. These isolated bacterial cultures were also utilized most of the aromatic compounds at 7 mM. These findings indicate the organisms present in this zone may have more potential applications in bioremediation, agricultural, industrial, and therapeutics.
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