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- Author:
- Brandrick, Angela M.; Newton, J.M.; Henderson, G.; Vickers, J.A.
- Source:
- Journal of applied microbiology 1967 v.30 no.3 pp. 484-487
- ISSN:
- 1364-5072
- Subject:
- Escherichia coli; Staphylococcus aureus; aqueous solutions; bacteria; iodine
- Abstract:
- ... The interaction between aqueous solutions of radioactive iodine (¹³¹I) and washed suspensions of Escherichia coli and Staphylococcus aureus has been investigated. The conditions of the experiments were such that the bacteria were killed and no free iodine remained. Most of the iodine reacted with the bacteria by an oxidation-reduction process, but halogenation also took place. ...
- DOI:
- 10.1111/j.1365-2672.1967.tb00325.x
- https://doi.org/10.1111/j.1365-2672.1967.tb00325.x
- Author:
- John, A.J.; Karunakaran, V.P.; George, V.; Pradeep, N.S.; Sethuraman, M.G.
- Source:
- Journal of essential oil research 2007 v.19 no.6 pp. 591-593
- ISSN:
- 1041-2905
- Subject:
- chemical composition; Staphylococcus aureus; aqueous solutions; essential oils; plant extracts; Pittosporum; distillation; germacrene; gas chromatography; Salmonella Typhi; leaves; antibacterial properties
- DOI:
- 10.1080/10412905.2007.9699338
- https://doi.org/10.1080/10412905.2007.9699338
- Author:
- Zhang, Feng; Zhang, Desuo; Chen, Yuyue; Lin, Hong
- Source:
- Cellulose 2009 v.16 no.2 pp. 281-288
- ISSN:
- 0969-0239
- Subject:
- Escherichia coli; Staphylococcus aureus; aldehydes; antimicrobial properties; aqueous solutions; cotton fabric; polymers
- Abstract:
- ... An amino-terminated hyperbranched polymer (HBP-NH₂) was grafted to cotton fabric by a reaction between the aldehyde groups of oxidized cotton fabric and the amino groups of the HBP-NH₂ to provide cotton fabric with durable antimicrobial properties. The antimicrobial activities of the HBP-NH₂ aqueous solutions and the HBP-NH₂ grafted cotton fabrics were evaluated quantitatively against Staphylococc ...
- DOI:
- 10.1007/s10570-008-9253-1
- https://doi.org/10.1007/s10570-008-9253-1
- Author:
- Lu, Zekuan; Wang, Yipeng; Zhai, Lei; Che, Qiaolin; Wang, Hui; Du, Shuyuan; Wang, Duo; Feng, Feifei; Liu, Jingze; Lai, Ren; Yu, Haining
- Source:
- FEBS journal 2010 v.277 no.10 pp. 2329-2339
- ISSN:
- 1742-464X
- Subject:
- Gram-positive bacteria; Staphylococcus aureus; anti-infective properties; antibiotics; aqueous solutions; asses; bacterial colonization; blood serum; cDNA libraries; calcium chloride; cathelicidins; complementary DNA; drug resistance; erythrocytes; fungi; hemagglutination; hemolysis; humans; minimum inhibitory concentration; polymerase chain reaction; scanning electron microscopes; sequence homology
- Abstract:
- ... In the present study, EA-CATH1 and EA-CATH2 were identified from a constructed lung cDNA library of donkey (Equus asinus) as members of cathelicidin-derived antimicrobial peptides, using a nested PCR-based cloning strategy. Composed of 25 and 26 residues, respectively, EA-CATH1 and EA-CATH2 are smaller than most other cathelicidins and have no sequence homology to other cathelicidins identified to ...
- DOI:
- 10.1111/j.1742-4658.2010.07648.x
- PubMed:
- 20423460
- https://doi.org/10.1111/j.1742-4658.2010.07648.x
- Author:
- Li, Shuping; Guo, Zhongxian; Wu, Hui-Fen; Liu, Ying; Yang, Zhaoguang; Woo, Chee Hoe
- Source:
- Analytical and bioanalytical chemistry 2010 v.397 no.6 pp. 2465-2476
- ISSN:
- 1618-2642
- Subject:
- Bacillus cereus; Bacillus subtilis; Enterococcus faecium; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; aqueous solutions; desorption; detection limit; filtration; ionization; magnetic separation; magnetite; mass spectrometry; nanoparticles; rapid methods; tap water; water analysis; water reservoirs
- Abstract:
- ... Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) is challenging when it is directly applied to identify bacteria in water. This study demonstrates a rapid, sensitive, and selective technique for detection of Gram-positive bacteria in water. It involves a combination of membrane filtration (MF) and vancomycin-conjugated magnetite nanoparticles (VNPs) to selectively separat ...
- DOI:
- 10.1007/s00216-010-3777-6
- PubMed:
- 20512317
- https://doi.org/10.1007/s00216-010-3777-6
- Author:
- Santosh Kumar; P.K. Dutta; Joonseok Koh
- Source:
- International journal of biological macromolecules 2011 v.49 no.3 pp. 356-361
- ISSN:
- 0141-8130
- Subject:
- Candida albicans; Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; X-ray diffraction; acetic acid; anti-infective agents; anti-infective properties; aqueous solutions; bacteria; chitosan; crosslinking; hydrocolloids; photoluminescence; scanning electron microscopy; screening; solvents; thermal stability; thermogravimetry
- Abstract:
- ... This paper describes an elegant cross-linking technique for the preparation of chitosan–chloroquinoline derivative by using a greener technique. Chitosan solution in aqueous acetic acid was treated with 2-chloroquinoline-3-carbaldehyde solution to form hydrogel; the resulting hydrogel was subjected to solvent exchange. Combining the results of FTIR and XRD confirmed that 2-chloroquinoline-3-carbal ...
- DOI:
- 10.1016/j.ijbiomac.2011.05.017
- https://doi.org/10.1016/j.ijbiomac.2011.05.017
- Author:
- G. Gozzelino; D. E. Romero Romero Tobar; N. Chaitiemwong; W. Hazeleger; R. Beumer
- Source:
- Journal of food protection 2011 v.74 no.12 pp. 2107-2112
- ISSN:
- 0362-028X
- Subject:
- Escherichia coli; Listeria monocytogenes; Staphylococcus aureus; ammonium; antibacterial properties; aqueous solutions; bacteria; biocides; carbon; coatings; copolymerization; crosslinking; leaching; moieties; polymers; quaternary ammonium compounds; resins; stainless steel; ultraviolet radiation; urethane
- Abstract:
- ... Antibacterial polymers suitable for coating applications without leaching of the biocidal component have been obtained by UV copolymerization of acrylic resins with acrylic monomers containing quaternary ammonium moieties. Suitable reactive biocides, based on quaternary ammonium monomers (QAMs), endowed with undecylacryloyl group and alkyl chains with 2 (QAM-C2), 8 (QAM-C8), and 16 (QAM-C16) carbo ...
- DOI:
- 10.4315/0362-028X.JFP-11-220
- https://doi.org/10.4315/0362-028X.JFP-11-220
- Author:
- Lifeng Zhang; Jie Luo; Todd J. Menkhaus; Hemanthram Varadaraju; Yuyu Sun; Hao Fong
- Source:
- Journal of membrane science 2011 v.369 no.1-2 pp. 499-505
- ISSN:
- 0376-7388
- Subject:
- Escherichia coli; Staphylococcus aureus; air; aqueous solutions; artificial membranes; cost effectiveness; filtration; hydroxylamine; ions; microorganisms; nanofibers; nanosilver; permeability; polyacrylonitrile; potassium bromide; silver; silver nitrate
- Abstract:
- ... In this study, polyacrylonitrile (PAN) nano-fibrous membranes with fiber diameters of ∼450nm were prepared by the technique of electrospinning; amidoxime nano-fibrous membranes were then prepared through treatment of PAN nano-fibrous membranes in hydroxylamine (NH₂OH) aqueous solution. The –CN groups on the surface of PAN nanofibers reacted with NH₂OH molecules and led to the formation of –C(NH₂)N ...
- DOI:
- 10.1016/j.memsci.2010.12.032
- https://doi.org/10.1016/j.memsci.2010.12.032
- Author:
- Ling Lin; Wen‐Zhong Gong; Shan‐Yuan Wang
- Source:
- The journal of the Textile Institute 2011 v.102 no.5 pp. 419-423
- ISSN:
- 1754-2340
- Subject:
- Staphylococcus aureus; adsorption; antibacterial properties; aqueous solutions; bacteria; cell walls; cytotoxicity; enzymes; ions; membrane permeability; models; polyethylene terephthalates; silver
- Abstract:
- ... Silver ions can effectively kill bacteria due to their adsorption onto the negatively charged bacterial cell wall, thus deactivating cellular enzymes, disrupting membrane permeability, and ultimately leading to cell lysis and death. In this study, silver particles incorporated into hollow polyethylene terephthalate (PET) fibers are utilized as an antibacterial composition against the bacterium, St ...
- DOI:
- 10.1080/00405000.2010.486185
- https://doi.org/10.1080/00405000.2010.486185
- Author:
- Natcharee Pitak; Sudip K. Rakshit
- Source:
- Lebensmittel-Wissenschaft + Technologie 2011 v.44 no.10 pp. 2310-2315
- ISSN:
- 0023-6438
- Subject:
- Staphylococcus aureus; cans; food preparation; flour; value added; water vapor; tensile strength; aqueous solutions; industry; starch; antimicrobial properties; chitosan; corn; solubility; Chinese cabbage; wastes; Crustacea; bags; shrimp; anti-infective agents; bananas; permeability; Thailand
- Abstract:
- ... Kluai Namwa is a local species of banana grown in Thailand. Flour made from this banana was mixed with chitosan, a by product of the shrimp industry, for casting films as it has valuable characteristics including antimicrobial effects. Utilization of excess banana available in high season and chitosan can from the waste crustacean shells could help reduce waste while making available a value added ...
- DOI:
- 10.1016/j.lwt.2011.05.024
- https://doi.org/10.1016/j.lwt.2011.05.024
- Author:
- Qian Yu; Yanan Song; Xiaomei Shi; Chunye Xu; Yuezhen Bin
- Source:
- Carbohydrate polymers 2011 v.84 no.1 pp. 465-470
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Staphylococcus aureus; alcohols; antibacterial properties; aqueous solutions; chitosan; crosslinking; gels; glutaraldehyde; mixing; polyvinyl alcohol
- Abstract:
- ... Novel crosslinked blend films of N-(2-hydroxy)propyl-3-trimethylammonium chitosan chloride (HTCC) and poly(vinyl alcohol) (PVA) were prepared by mixing their aqueous solutions followed by crosslinking with glutaraldehyde (GA). The effects of the GA content and ratio of HTCC to PVA on the appearance, swelling, gel content, morphology and antibacterial activities of blend films were studied and a po ...
- DOI:
- 10.1016/j.carbpol.2010.12.006
- https://doi.org/10.1016/j.carbpol.2010.12.006
- Author:
- M. Annadhasan; V.R. SankarBabu; R. Naresh; K. Umamaheswari; N. Rajendiran
- Source:
- Colloids and surfaces 2012 v.96 no. pp. 14-21
- ISSN:
- 0927-7765
- Subject:
- Candida albicans; Candida krusei; Candida tropicalis; Escherichia coli; Fourier transform infrared spectroscopy; Pseudomonas; Staphylococcus aureus; additives; amino acid composition; amino acids; antifungal properties; aqueous solutions; bile salts; colloids; guidelines; ions; light scattering; nanosilver; silver; silver nitrate; solar radiation; transmission electron microscopy
- Abstract:
- ... Aqueous solution containing two additives, silver nitrate (AgNO₃) and sodium salt of N-cholyl amino acid were irradiated by sunlight for the synthesis of spherical shaped AgNPs without the need for an additional stabilizer or capping agent. Variations of N-cholyl amino acid concentration provided good control over the morphology of the AgNPs, while the carboxylate group of bile salt reduced the Ag ...
- DOI:
- 10.1016/j.colsurfb.2012.03.009
- https://doi.org/10.1016/j.colsurfb.2012.03.009
- Author:
- Zhixin Tai; Haibin Ma; Bin Liu; Xingbin Yan; Qunji Xue
- Source:
- Colloids and surfaces 2012 v.89 no. pp. 147-151
- ISSN:
- 0927-7765
- Subject:
- Escherichia coli; Staphylococcus aureus; X-ray diffraction; acrylic acid; ambient temperature; anti-infective properties; aqueous solutions; biocompatible materials; colloids; energy; graphene; nanocrystals; nanosheets; nanosilver; polyacrylic acid; reducing agents; silver; silver nitrate; spectroscopy; thermogravimetry; transmission electron microscopes
- Abstract:
- ... A facile and efficient aqueous phase-based strategy to synthesize silver nanocrystal/graphene nanosheet (GNS) nanohybrids at room temperature, via in situ poly(acrylic acid) (PAA) grafting followed by attachment of Ag nanocrystals, was reported. In the presence of PAA-grafted GNSs, Ag nanoparticles were in situ generated from AgNO₃ aqueous solution without any additional reducing agent or complica ...
- DOI:
- 10.1016/j.colsurfb.2011.09.006
- https://doi.org/10.1016/j.colsurfb.2011.09.006
- Author:
- Fuyuan Ding; Xiaowen Shi; Xiaoxia Li; Jie Cai; Bo Duan; Yumin Du
- Source:
- Carbohydrate polymers 2012 v.87 no.1 pp. 422-426
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; X-ray diffraction; antibacterial properties; aqueous solutions; chitin; chitosan; mixing; nuclear magnetic resonance spectroscopy; sodium hydroxide; urea; zeta potential
- Abstract:
- ... Water-soluble and white quaternized chitin (QC) was homogeneously synthesized by stirring transparent chitin solution (2%) in 8wt%NaOH/4wt% urea aqueous solution containing 2,3-Epoxypropyltrimethylammonium Chloride (EPTMAC) at 10°C for 24h. The structure and properties of quaternized chitin were characterized by FT-IR, XRD, ¹H NMR, GPC, element analysis and ζ-potential. The results indicate that q ...
- DOI:
- 10.1016/j.carbpol.2011.07.069
- https://doi.org/10.1016/j.carbpol.2011.07.069
- Author:
- Xiong Meng-Hua; Bao Yan; Yang Xian-Zhu; Wang Yu-Cai; Sun Baolin; Wang Jun
- Source:
- Journal of the American Chemical Society 2012 v.134 no.9 pp. 4355-4362
- ISSN:
- 1520-5126
- Subject:
- Staphylococcus aureus; aqueous solutions; bacteria; bacterial infections; composite polymers; drug carriers; drugs; encapsulation; ethylene; hydrophobicity; models; phosphates; polyethylene glycol; polymerization; vancomycin
- Abstract:
- ... We report a new strategy for differential delivery of antimicrobials to bacterial infection sites with a lipase-sensitive polymeric triple-layered nanogel (TLN) as the drug carrier. The TLN was synthesized by a convenient arm-first procedure using an amphiphilic diblock copolymer, namely, monomethoxy poly(ethylene glycol)-b-poly(ε-caprolactone), to initiate the ring-opening polymerization of the d ...
- DOI:
- 10.1021/ja211279u
- https://doi.org/10.1021/ja211279u
- Author:
- Sang Kyoo Lim; Seong Hui Hong; Sung-Ho Hwang; Soonhyun Kim; Jae Sung Han; Oh Kyung Kwon
- Source:
- Textile research journal v.82 no.19 pp. 1973-1981
- ISSN:
- 1746-7748
- Subject:
- Klebsiella pneumoniae; Staphylococcus aureus; adsorption; antibacterial properties; aqueous solutions; bacteria; fabrics; gold; irradiation; metal ions; methanol; nanogold; nanoparticles; nanosilver; photocatalysis; platinum; polyethylene terephthalates; silver; silver nitrate; spinning; textile fibers; titanium dioxide; ultraviolet radiation
- Abstract:
- ... Gold, silver, and platinum nanoparticles were immobilized on the surface of TiO₂ in the sheath part of bi-component filaments. The processes involved include the spinning process used to prepare polyethylene terephthalate (PET)/PET-TiO₂ bi-component filaments and the photocatalytic deposition process of gold, silver and platinum nanoparticles. The core part and the sheath part consist of virgin PE ...
- DOI:
- 10.1177/0040517512450762
- https://doi.org/10.1177/0040517512450762
- Author:
- Samera Salimpour Abkenar; Reza Mohammad Ali Malek
- Source:
- Cellulose 2012 v.19 no.5 pp. 1701-1714
- ISSN:
- 0969-0239
- Subject:
- Candida albicans; Escherichia coli; Fourier transform infrared spectroscopy; Gram-negative bacteria; Gram-positive bacteria; Pseudomonas aeruginosa; Staphylococcus aureus; antimicrobial properties; aqueous solutions; citric acid; cotton fabric; crosslinking; dispersions; emissions; esters; fungi; light scattering; nitrogen content; particle size distribution; plate count; propylene; scanning electron microscopy
- Abstract:
- ... Two generations of poly (propylene imine) dendrimer with amino terminated groups (G2- and G5-PPI-NH2) were grafted on cotton cellulose fabric using cross linking agents (citric or glutaric acids). Fourier transform infrared (FTIR) spectroscopy identified ester groups which were formed between hydroxyl groups of the cotton fabric and carboxylic groups of the cross linking agents. Also, attenuated t ...
- DOI:
- 10.1007/s10570-012-9744-y
- https://doi.org/10.1007/s10570-012-9744-y
- Author:
- Pongsaton Amornpitoksuk; Sumetha Suwanboon; Suthinee Sangkanu; Ampaitip Sukhoom; Nantakan Muensit; Jonas Baltrusaitis
- Source:
- Powder technology 2012 v.219 no. pp. 158-164
- ISSN:
- 0032-5910
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; aqueous solutions; composite polymers; ethylene oxide; methylene blue; nanocrystals; powders; propylene oxide; silver nitrate; sodium hydroxide; zinc acetate; zinc oxide
- Abstract:
- ... Nanocrystalline Ag-doped ZnO powders were synthesized directly from an aqueous solution of zinc acetate dihydrate and silver nitrate in the presence of poly(ethylene oxide)-b-poly(propylene oxide), (PEO)₁₉-b-(PPO)₃, and sodium hydroxide at 70°C. The ZnO powders had an urchin-like shape without any dopant and this turned to an agglomerated rod-like structure when the Ag loading was less than or equ ...
- DOI:
- 10.1016/j.powtec.2011.12.032
- https://doi.org/10.1016/j.powtec.2011.12.032
- Author:
- Daewon Park; Alyssa M. Larson; Alexander M. Klibanov; Yadong Wang
- Source:
- Applied biochemistry and biotechnology 2013 v.169 no.4 pp. 1134-1146
- ISSN:
- 0273-2289
- Subject:
- Enterovirus C; Staphylococcus aureus; aqueous solutions; Escherichia coli; polyurethanes; antibacterial properties
- Abstract:
- ... We have prepared and characterized a new polyurethane-based antimicrobial material, N,N-dodecyl,methyl-polyurethane (Quat-12-PU). It exhibits strong antiviral and antibacterial activities when coated (as an organic solution or an aqueous nanosuspension) onto surfaces and antibacterial activity when electrospun into nanofibers. Quat-12-PU surfaces are able to kill airborne Gram-positive Staphylococ ...
- DOI:
- 10.1007/s12010-012-9999-7
- PubMed:
- 23306899
- https://doi.org/10.1007/s12010-012-9999-7
- Author:
- Guangyu Zhang; Yan Liu; Hideaki Morikawa; Yuyue Chen
- Source:
- Cellulose 2013 v.20 no.4 pp. 1877-1884
- ISSN:
- 0969-0239
- Subject:
- Escherichia coli; Staphylococcus aureus; X-radiation; antibacterial properties; aqueous solutions; bamboos; dodecanoic acid; fabrics; nanoparticles; polymers; pulp; scanning electron microscopy; spectroscopy; transmission electron microscopy
- Abstract:
- ... Hyperbranched polymer HSDA was synthesized from methyl acrylate, tetraethylenepentamine, and dodecanoic acid by melt polycondensation. ZnO nanoparticle colloidal solution was prepared in one step by mixing Zn(NO₃)₂and HSDA aqueous solution under hydrothermal condition. The results of transmission electron microscopy and ultraviolet–visible (UV–Vis) spectroscopy indicated that ZnO nanoparticles wer ...
- DOI:
- 10.1007/s10570-013-9979-2
- https://doi.org/10.1007/s10570-013-9979-2
- Author:
- Uskoković Vuk; Batarni Samir Shariff; Schweicher Julien; King Andrew; Desai Tejal A.
- Source:
- ACS Applied Materials & Interfaces 2013 v.5 no.7 pp. 2422-2431
- ISSN:
- 1944-8252
- Subject:
- Staphylococcus aureus; agar; antibacterial properties; aqueous solutions; broths; cell viability; clindamycin; cytoskeleton; drugs; fluorescein; gene expression; gene expression regulation; growth retardation; hydroxyapatite; microbial growth; mitochondria; models; nanoparticles; osteopontin; particle size; powders; spectral analysis; surface area
- Abstract:
- ... Powders composed of four morphologically different calcium phosphate particles were prepared by precipitation from aqueous solutions: flaky, brick-like, elongated orthogonal, and spherical. The particles were then loaded with either clindamycin phosphate as the antibiotic of choice or fluorescein, a model molecule used to assess the drug release properties. A comparison was carried out of the effe ...
- DOI:
- 10.1021/am4000694
- PubMed:
- 23484624
- PubMed Central:
- PMC3647690
- https://doi.org/10.1021/am4000694
- Author:
- Dongargaonkar Alpana A.; Bowlin Gary L.; Yang Hu
- Source:
- Biomacromolecules 2013 v.14 no.11 pp. 4038-4045
- ISSN:
- 1526-4602
- Subject:
- Pseudomonas aeruginosa; Staphylococcus aureus; acetates; antimicrobial properties; aqueous solutions; chemical bonding; diameter; drugs; gelatin; mechanical properties; nanofibers; pathogens; permeability; polyethylene glycol; porosity; silver; swelling (materials)
- Abstract:
- ... In this work, we report a new nanofiber construct based on electrospun blends of gelatin and gelatin–dendrimer conjugates. Highly branched star-shaped polyamidoamine (PAMAM) dendrimer G3.5 was covalently conjugated to gelatin via EDC/NHS chemistry. Blends of gelatin and gelatin–dendrimer conjugates mixed with various loading levels of silver acetate (0, 0.83, 1.65, and 3.30% w/w) were successfully ...
- DOI:
- 10.1021/bm401143p
- PubMed:
- 24127747
- PubMed Central:
- PMC3886127
- https://doi.org/10.1021/bm401143p
- Author:
- Hanen Chakroun; Mohamed Bouaziz; Thabèt Yangui; Imen Blibech; Abdelhafidh Dhouib; Sami Sayadi
- Source:
- Journal of Molecular Catalysis. B, Enzymatic 2013 v.87 pp. 11-17
- ISSN:
- 1381-1177
- Subject:
- Enterococcus hirae; Escherichia coli; Pseudomonas aeruginosa; Staphylococcus aureus; Trametes trogii; Tuta absoluta; antifungal properties; aqueous solutions; carbon; catalytic activity; enzymatic reactions; insecticidal properties; insects; laccase; nuclear magnetic resonance spectroscopy; pests; phytotoxicity; stable isotopes; tomatoes; viability
- Abstract:
- ... Oxidative transformation of tyrosol catalysed by Trametes trogii laccases in aqueous solution was investigated. LC–MS analysis shows that tyrosol was converted to its dimer. The enzymatic reaction was also investigated by 1H and 13C nuclear magnetic resonance, and the product formed was identified as a dimeric tetracyclic ketone. The bactericidal and fungicidal properties of tyrosol dimer were inv ...
- DOI:
- 10.1016/j.molcatb.2012.10.006
- https://doi.org/10.1016/j.molcatb.2012.10.006
- Author:
- Rui Xiong; Canhui Lu; Wei Zhang; Zehang Zhou; Xinxing Zhang
- Source:
- Carbohydrate polymers 2013 v.95 no.1 pp. 214-219
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; aqueous solutions; cellulose; nanocrystals; nanoparticles; nanospheres; reducing agents; silver; silver nitrate
- Abstract:
- ... In this study, we report a facile and environmentally friendly strategy for synthesis of well dispersed and stable silver nanostructures using cellulose nanocrystals in aqueous solution without employing any other reductants, capping or dispersing agents. Importantly, it is feasible to adjust the morphology of the silver nanostructures by varying the precursor AgNO3 concentration. Silver nanospher ...
- DOI:
- 10.1016/j.carbpol.2013.02.077
- https://doi.org/10.1016/j.carbpol.2013.02.077
- Author:
- Roberta Cassano; Sonia Trombino; Teresa Ferrarelli; Fiore Pasquale Nicoletta; Maria Vittoria Mauro; Cristina Giraldi; Nevio Picci
- Source:
- Cellulose 2013 v.20 no.1 pp. 547-557
- ISSN:
- 0969-0239
- Subject:
- Staphylococcus aureus; aqueous solutions; Cannabis sativa; biopolymers; absorption; chelates; cadmium; cellulose; esterification; infrared spectroscopy; differential scanning calorimetry; hemp; pH; emissions; Pseudomonas aeruginosa; anti-infective agents; metal ions; antibacterial properties
- Abstract:
- ... The aim of this study was to synthesize a new antibacterial and chelating biopolymer and to evaluate its germicidal activity and its ability in metal ions removal from aqueous solutions. The material was prepared via esterification of hemp with 2-benzyl-4-chlorophenol, a germicide agent, that was covalently coupled to cellulose backbone of hydrophilic fibers by a heterogeneous synthesis, to produc ...
- DOI:
- 10.1007/s10570-012-9804-3
- https://doi.org/10.1007/s10570-012-9804-3
- Author:
- Gownolla Malegowd Raghavendra; Tippabattini Jayaramudu; Kokkarachedu Varaprasad; Singanamala Ramesh; Konduru Mohana Raju
- Source:
- RSC advances 2013 v.4 no.7 pp. 3494-3501
- ISSN:
- 2046-2069
- Subject:
- Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; adverse effects; aqueous solutions; cellulosic fibers; curcumin; gelatin; humans; nanoparticles; nuclear magnetic resonance spectroscopy; scanning electron microscopy; solvents; thermal analysis; transmission electron microscopy; turmeric; ultrasonic treatment
- Abstract:
- ... Curcumin, a greatly potent, non-toxic and naturally existing bioactive material in turmeric is widely employed to develop biomedical functional materials due to its environmental friendly nature. In general, curcumin functional materials were prepared by administrating non-aqueous solvents as a dissolving medium for curcumin. These non-aqueous solvents cause adverse effects for the environment and ...
- DOI:
- 10.1039/c3ra46429f
- https://doi.org/10.1039/c3ra46429f
27. Poly(vinyl alcohol)/sodium alginate/layered silicate based nanofibrous mats for bacterial inhibition
- Author:
- Wei Li; Xueyong Li; Yang Chen; Xiaoxia Li; Hongbing Deng; Ting Wang; Rong Huang; Gang Fan
- Source:
- Carbohydrate polymers 2013 v.92 no.2 pp. 2232-2238
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Staphylococcus aureus; X-radiation; X-ray diffraction; aqueous solutions; mixing; polyvinyl alcohol; scanning electron microscopy; spectroscopy; thermal stability; thermogravimetry
- Abstract:
- ... Poly(vinyl alcohol) (PVA)/sodium alginate (ALG)/organic rectorite (OREC) composite nanofibrous mats are fabricated by electrospinning aqueous solutions with different mixing ratios. Both good fiber shape and three-dimensional structure of nanofibrous mats can be observed by Field Emission Scanning Electron Microscopy. Energy-dispersive X-ray spectroscopy shows the existence of OREC in the as-spun ...
- DOI:
- 10.1016/j.carbpol.2012.12.004
- https://doi.org/10.1016/j.carbpol.2012.12.004
28. Properties of novel polyvinyl alcohol/cellulose nanocrystals/silver nanoparticles blend membranes
- Author:
- Xu Xu; Yi-Qin Yang; Ying-Ying Xing; Jiu-Fang Yang; Shi-Fa Wang
- Source:
- Carbohydrate polymers 2013 v.98 no.2 pp. 1573-1577
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Staphylococcus aureus; acid treatment; ambient temperature; antibacterial properties; aqueous solutions; cellulose; films (materials); nanocomposites; nanocrystals; nanosilver; polyvinyl alcohol; silver nitrate; sulfuric acid; tensile strength
- Abstract:
- ... Novel polyvinyl alcohol (PVA) blend membranes containing cellulose nanocrystals (CNs) and silver nanoparticles (AgNPs) were prepared via a simple method. CNs were prepared by sulfuric acid treatment of microcrystalline cellulose. AgNO3 aqueous solution mixed with the CNs aqueous suspension and was reduced by NaBH4 at room temperature. Purified CNs/AgNPs nanocomposites as functional fillers mixed w ...
- DOI:
- 10.1016/j.carbpol.2013.07.065
- https://doi.org/10.1016/j.carbpol.2013.07.065
- Author:
- Xiuheng Xue; Juhua Wang; Lin Mei; Zhigeng Wang; Kezong Qi; Bin Yang
- Source:
- Colloids and Surfaces B: Biointerfaces 2013 v.103 pp. 107-113
- ISSN:
- 0927-7765
- Subject:
- Staphylococcus aureus; adsorption; antiserum; aqueous solutions; chitosan; colloids; enterotoxins; iron oxides; nanoparticles
- Abstract:
- ... Fe3O4 modified by chitosan (CTS) and Staphylococcus aureus enterotoxin A (SEA) antiserum immunomagnetic beads (Fe3O4-CTS-SEA-IB) that targeted enrich SEA were prepared in aqueous solution and using CTS and SEA antiserum as surface modification stabilizer. Recognition experiments of the prepared Fe3O4-CTS-SEA-IB on SEA were conducted to determine adsorption capacity and recognition specificity. The ...
- DOI:
- 10.1016/j.colsurfb.2012.10.013
- https://doi.org/10.1016/j.colsurfb.2012.10.013
- Author:
- Natália R. Pires; Pablyana L.R. Cunha; Jeanny S. Maciel; Alysson L. Angelim; Vania M.M. Melo; Regina C.M. de Paula; Judith P.A. Feitosa
- Source:
- Carbohydrate polymers 2013 v.91 no.1 pp. 92-99
- ISSN:
- 0144-8617
- Subject:
- Fourier transform infrared spectroscopy; Pseudomonas aeruginosa; Staphylococcus aureus; anti-infective properties; aqueous solutions; chitosan; depolymerization; formic acid; humans; molecular weight; nuclear magnetic resonance spectroscopy; solubility; tears; thermal stability; viscosity; water content
- Abstract:
- ... Chitosan of high molar mass and with 82% deacetylation was sulfated using two procedures and characterized. In the first method sample chitosan-S1 was produced using chlorosulfonic acid as the sulfating agent and N,N-dimethylformamide as the medium, and in the second method (chitosan-S2) formic acid was also used. The degrees of sulfation were 0.87 (chitosan-S1) and 0.67 (chitosan-S2). FTIR spectr ...
- DOI:
- 10.1016/j.carbpol.2012.08.011
- https://doi.org/10.1016/j.carbpol.2012.08.011
- Author:
- Xiao-dan Wang; Ning-lin Zhou; Wei-yan Wang; Yi-da Tang; Jun Zhang; Jian Shen
- Source:
- Carbon 2013 v.52 no. pp. 625
- ISSN:
- 0008-6223
- Subject:
- Escherichia coli; Fourier transform infrared spectroscopy; Pseudomonas aeruginosa; Staphylococcus aureus; antibacterial properties; aqueous solutions; bacteria; chemical bonding; graphene; ions; lanthanum; transmission electron microscopy
- Abstract:
- ... Graphene oxide (GO) was functionalized by acetyl chloride to form carboxylated graphene oxide (GO-COOH). GO-COOH decorated with La particles with diameters between 0.2 and 1μm was prepared by the sonication of a LaCl₃ aqueous solution with GO-COOH. The La-decorated GO-COOH was characterized by FT-IR, TGA and TEM, and its antibacterial properties were characterized by bacteria growth kinetics. Resu ...
- DOI:
- 10.1016/j.carbon.2012.10.026
- https://doi.org/10.1016/j.carbon.2012.10.026
- Author:
- Jinliang Liu; Jinting Cheng; Yong Zhang
- Source:
- Biosensors & bioelectronics 2013 v.43 pp. 252-256
- ISSN:
- 0956-5663
- Subject:
- DNA; Staphylococcus aureus; antibiotic resistance; aqueous solutions; biosensors; citrates; detection limit; energy transfer; luminescence; methicillin; nanoparticles; nucleic acid hybridization; nucleotide sequences; oligonucleotides
- Abstract:
- ... In this short communication we report an efficient and versatile method for the detection of methicillin-resistant staphylococcus aureus (MRSA) DNA sequence with high sensitivity and specificity. This method is based on upconversion nanoparticles (UCNs) and luminescence resonance energy transfer (LRET) between NaYF4:Yb, Er UCNs, the energy donor, and carboxytetramethylrhodamine (TAMRA), the energy ...
- DOI:
- 10.1016/j.bios.2012.12.026
- https://doi.org/10.1016/j.bios.2012.12.026
- Author:
- Vasudevavendan Chakrapani; Khan Behlol Ayaz Ahmed; V. Vinod Kumar; Veerappan Ganapathy; Savarimuthu Philip Anthony; Veerappan Anbazhagan
- Source:
- RSC advances 2014 v.4 no.63 pp. 33215-33221
- ISSN:
- 2046-2069
- Subject:
- Fourier transform infrared spectroscopy; Gram-negative bacteria; Staphylococcus aureus; X-ray diffraction; antibacterial properties; antibiotics; antioxidants; aqueous solutions; ascorbic acid; casein; colorimetry; copper nanoparticles; drug resistance; hydrazine; mercury; metal ions; optical properties; transmission electron microscopy; tryptophan; ultraviolet-visible spectroscopy
- Abstract:
- ... A simple method was developed for the synthesis of copper nanoparticles (CuNPs) with relatively high concentration by using casein, hydrazine, and ascorbic acid as stabilizing, reducing and antioxidant agents, respectively. The obtained nanoparticles were characterized by UV-Vis spectroscopy, transmission electron microscopy, FTIR and X-ray diffraction. The synthesized CuNPs exhibited good antibac ...
- DOI:
- 10.1039/c4ra03086a
- https://doi.org/10.1039/c4ra03086a
- Author:
- Matej Bračič; Lourdes Pérez; Rosa Infante Martinez-Pardo; Ksenija Kogej; Silvo Hribernik; Olivera Šauperl; Lidija Fras Zemljič
- Source:
- Cellulose 2014 v.21 no.4 pp. 2647-2663
- ISSN:
- 0969-0239
- Subject:
- Candida glabrata; Staphylococcus aureus; biopolymers; scanning electron microscopy; reflectance; aqueous solutions; turbidity; cellulose; Kjeldahl method; Fourier transform infrared spectroscopy; Streptococcus agalactiae; Escherichia coli; antimicrobial properties; Candida albicans; lysine; medicine; coatings; hyaluronic acid; nitrogen; binding sites; pH; viscose
- Abstract:
- ... In this investigation, a novel coating for viscose fabric surface modification was developed using a synergistic formulation between a natural antimicrobial cationic surfactant from lysine (MKM) and a biopolymer hyaluronic acid (HA). The interaction between MKM and HA in aqueous solutions, as well as the interactions between their synergistic formulation (HA-MKM) and viscose fabric (CV) were studi ...
- DOI:
- 10.1007/s10570-014-0338-8
- https://doi.org/10.1007/s10570-014-0338-8
- Author:
- Jin Feng; Qingshan Shi; Wenru Li; Xiulin Shu; Aimei Chen; Xiaobao Xie; Xiaomo Huang
- Source:
- Cellulose 2014 v.21 no.6 pp. 4557-4567
- ISSN:
- 0969-0239
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; aqueous solutions; cellulose; ion exchange; ions; nanosilver; oxidation; silver; silver nitrate; sodium; sodium citrate
- Abstract:
- ... In order to improve the antimicrobial activity of bacterial cellulose (BC), the silver nanoparticles (Ag NPs) were in situ fabricated on the BC membranes, affording BC and Ag hybrid antimicrobial materials, BC + Ag, which possesses excellent antimicrobial performance. Typically, carboxyl groups were firstly introduced into BC by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidati ...
- DOI:
- 10.1007/s10570-014-0449-2
- https://doi.org/10.1007/s10570-014-0449-2
- Author:
- K. Jeeva; M. Thiyagarajan; V. Elangovan; N. Geetha; P. Venkatachalam
- Source:
- Industrial crops and products 2014 v.52 pp. 714-720
- ISSN:
- 0926-6690
- Subject:
- Caesalpinia coriaria; Escherichia coli; Fourier transform infrared spectroscopy; Klebsiella pneumoniae; Pseudomonas aeruginosa; Staphylococcus aureus; X-ray diffraction; antibacterial properties; aqueous solutions; biochemical compounds; biosynthesis; cosmetics; crystal structure; energy-dispersive X-ray analysis; humans; ions; leaf extracts; multiple drug resistance; nanomedicine; nanosilver; pathogens; rapid methods; reducing agents; scanning electron microscopy; silver; silver nitrate; surface plasmon resonance; tannins; topography
- Abstract:
- ... A rapid method for synthesis of silver nanoparticles using the leaf extracts of Caesalpinia coriaria that has high level of tannin contents is reported. For leaf extracts preparation, two methods were adopted and compared with their extracellular synthesis of metallic silver nanoparticles. Stable silver nanoparticles produced by treating an aqueous solution of AgNO3 (5mM) with the leaf extracts as ...
- DOI:
- 10.1016/j.indcrop.2013.11.037
- https://doi.org/10.1016/j.indcrop.2013.11.037
- Author:
- Antonio Zuorro; Marco Fidaleo; Marcello Fidaleo; Roberto Lavecchia
- Source:
- Journal of environmental management 2014 v.133 pp. 302-308
- ISSN:
- 0301-4797
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; antibiotic resistance; aqueous solutions; chloramphenicol; hydrogen peroxide; light intensity; response surface methodology; risk; ultraviolet radiation
- Abstract:
- ... The efficacy of the UV/H2O2 process to degrade the antibiotic chloramphenicol (CHL) was investigated at 20 °C using a low-pressure mercury lamp as UV source. A preliminary analysis of CHL degradation showed that the process followed apparent first-order kinetics and that an optimum H2O2 concentration existed for the degradation rate. The first-order rate constant was used as the response variable ...
- DOI:
- 10.1016/j.jenvman.2013.12.012
- https://doi.org/10.1016/j.jenvman.2013.12.012
- Author:
- Da Huo; Jian He; Hui Li; Haiping Yu; Tingting Shi; Yahui Feng; Zhengyang Zhou; Yong Hu
- Source:
- Colloids and Surfaces B: Biointerfaces 2014 v.117 pp. 29-35
- ISSN:
- 0927-7765
- Subject:
- Escherichia coli; Staphylococcus aureus; X-radiation; X-ray photoelectron spectroscopy; absorption; antibacterial properties; antibiotics; aqueous solutions; bacteria; blood flow; colloids; cytotoxicity; in vivo studies; nanoparticles; transmission electron microscopes; transmission electron microscopy
- Abstract:
- ... Au@Ag core–shell nanoparticles (NPs) integrating both antibacterial and X-ray attenuation capabilities were facilely synthesized in aqueous solution. These NPs modified with methoxy-PEG-SH (m-PEG) on the surface rendered them favorable dispersity and stability in water, resulting in enhancement of their blood circulation time. X-ray photoelectron spectroscope (XPS) and high-resolution transmission ...
- DOI:
- 10.1016/j.colsurfb.2014.02.008
- https://doi.org/10.1016/j.colsurfb.2014.02.008
- Author:
- Wei Xu; Weiping Jin; Liufeng Lin; Chunlan Zhang; Zhenshun Li; Yan Li; Rong Song; Bin Li
- Source:
- Carbohydrate polymers 2014 v.101 pp. 961-967
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; aqueous solutions; biopolymers; denaturation; nanoparticles; nanosilver; optical properties; p-nitrophenol; spectroscopy; transmission electron microscopy; xanthan gum
- Abstract:
- ... Silver nanoparticles (Ag NPs) were green synthetized using xanthan gum (XG) dissolved in water as reducing and capping agent for the first time. The structure, morphology, and size of Ag NPs in XG aqueous solutions were investigated with UV–vis spectroscopy, transmission electron microscopy and Fourier transform infrared. The results indicated Ag NPs were integrated successfully in the XG matrix a ...
- DOI:
- 10.1016/j.carbpol.2013.10.032
- https://doi.org/10.1016/j.carbpol.2013.10.032
- Author:
- Fei Xu; Jaroslav G. Vostal
- Source:
- FEMS microbiology letters 2014 v.358 no.1 pp. 98-105
- ISSN:
- 0378-1097
- Subject:
- Bacillus cereus; Escherichia coli; Klebsiella pneumoniae; Pseudomonas aeruginosa; Staphylococcus aureus; Staphylococcus epidermidis; aqueous solutions; bacteria; hydroxyl radicals; irradiation; menadione; photosensitivity; singlet oxygen; superoxide anion; ultraviolet radiation
- Abstract:
- ... This study investigated inactivation of bacteria with ultraviolet light A irradiation in combination with vitamin K3 as a photosensitizer. Six bacteria including Bacillus cereus, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Klebsiella pneumoniae, and Escherichia coli suspended in vitamin K3 aqueous solution were exposed to ultraviolet light A. Five of six bacteria, wi ...
- DOI:
- 10.1111/1574-6968.12544
- https://doi.org/10.1111/1574-6968.12544
- Author:
- Giuseppina Sandri; Maria Cristina Bonferoni; Franca Ferrari; Silvia Rossi; Carola Aguzzi; Michela Mori; Pietro Grisoli; Pilar Cerezo; Marika Tenci; Cesar Viseras; Carla Caramella
- Source:
- Carbohydrate polymers 2014 v.102 pp. 970-977
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Pseudomonas; Staphylococcus aureus; Streptococcus pyogenes; antibacterial properties; aqueous solutions; bacteria; biocompatibility; cell movement; chitosan; cytotoxicity; fibroblasts; fungi; glutamic acid; humans; keratinocytes; nanocomposites; silver; silver compounds; skin lesions; sulfadiazine; tissue repair; viruses
- Abstract:
- ... Silver compounds and especially silver sulfadiazine (AgSD) are reported as effective antimicrobial agents against almost all known bacteria, fungi and some viruses. However, AgSD has been shown to be cytotoxic toward fibroblasts and keratinocytes in vitro and consequently to retard wound healing in vivo.The aim of the present work was to evaluate the in vitro biocompatibility (cytotoxicity and pro ...
- DOI:
- 10.1016/j.carbpol.2013.10.029
- https://doi.org/10.1016/j.carbpol.2013.10.029
- Author:
- Asli Celebioglu; Zeynep Aytac; Ozgun C.O. Umu; Aykutlu Dana; Turgay Tekinay; Tamer Uyar
- Source:
- Carbohydrate polymers 2014 v.99 pp. 808-816
- ISSN:
- 0144-8617
- Subject:
- Escherichia coli; Raman spectroscopy; Staphylococcus aureus; antibacterial properties; aqueous solutions; bacteria; cyclodextrins; nanofibers; nanosilver; polyvinyl alcohol; reducing agents; silver; silver nitrate
- Abstract:
- ... One-step synthesis of size-tunable silver nanoparticles (Ag-NP) incorporated into electrospun nanofibers was achieved. Initially, in situ reduction of silver salt (AgNO3) to Ag-NP was carried out in aqueous solution of polyvinyl alcohol (PVA). Here, PVA was used as reducing agent and stabilizing polymer as well as electrospinning polymeric matrix for the fabrication of PVA/Ag-NP nanofibers. Afterw ...
- DOI:
- 10.1016/j.carbpol.2013.08.097
- https://doi.org/10.1016/j.carbpol.2013.08.097
- Author:
- Kondalkar Vijay V.; Mali Sawanta S.; Mane Rahul M.; Dandge P. B.; Choudhury Sipra; Hong Chang K.; Patil Pramod S.; Patil Shivajirao R.; Kim Jin H.; Bhosale Popatrao N.
- Source:
- Industrial & Engineering Chemistry Research 2014 v.53 no.47 pp. 18152-18162
- ISSN:
- 1520-5045
- Subject:
- Raman spectroscopy; Salmonella Typhi; Staphylococcus aureus; X-ray diffraction; X-ray photoelectron spectroscopy; antibacterial properties; aqueous solutions; bacteria; cefotaxime; electrodes; energy efficiency; mass spectrometry; microwave treatment; pH; photocatalysis; photoluminescence; recycling; titanium dioxide; toxicity; transmission electron microscopy; ultraviolet radiation
- Abstract:
- ... Nanostructured TiO₂ thin films were fabricated via a facile, economical, and energy-efficient microwave-assisted dip-coating (MWDC) technique. Further, the resulting TiO₂ films were characterized by means of X-ray diffraction, high-resolution transmission electron microscopy, selected-area electron diffraction, Fourier transform Raman spectroscopy, X-ray photoelectron spectroscopy, and photolumine ...
- DOI:
- 10.1021/ie501821a
- https://doi.org/10.1021/ie501821a
- Author:
- Paulraj Kanmani; Jong-Whan Rhim
- Source:
- Food chemistry 2014 v.148 pp. 162-169
- ISSN:
- 0308-8146
- Subject:
- foods; shelf life; food packaging; gelatin; water vapor; tensile strength; X-radiation; aqueous solutions; crystal structure; spectroscopy; energy; food safety; antibacterial properties; thermal properties; X-ray diffraction; absorption; nanosilver; silver; physicochemical properties; food pathogens; surface plasmon resonance; permeability
- Abstract:
- ... Active nanocomposite films were prepared by blending aqueous solutions of gelatin with different concentrations of silver nanoparticles (AgNPs) using a solvent casting method. Formation of silver nanoparticles in the solution and films was confirmed with the surface plasmon resonance (SPR) band at 400–450nm, measured by UV–vis absorption spectroscopy. The incorporation of AgNPs slightly affected t ...
- DOI:
- 10.1016/j.foodchem.2013.10.047
- PubMed:
- 24262541
- https://doi.org/10.1016/j.foodchem.2013.10.047
- Author:
- Hou-Yong Yu; Guo-Yin Chen; Yi-Bo Wang; Ju-Ming Yao
- Source:
- Cellulose 2015 v.22 no.1 pp. 261-273
- ISSN:
- 0969-0239
- Subject:
- Escherichia coli; Staphylococcus aureus; X-ray diffraction; acid hydrolysis; antibacterial properties; aqueous solutions; cellulose; citric acid; hydrochloric acid; irradiation; methylene blue; microstructure; nanocrystals; nanoparticles; nitrates; photolysis; scanning electron microscopy; spectroscopy; temperature; thermal degradation; thermal stability; thermogravimetry; ultraviolet radiation; zinc; zinc oxide
- Abstract:
- ... Cellulose nanocrystal/zinc oxide (CNC/ZnO) nanohybrids were prepared through citric acid/hydrochloric acid hydrolysis of commercial microcrystalline cellulose (MCC), and simple precipitation with zinc nitrate aqueous solution [Zn(NO₃)₂·6H₂O] via one-pot green synthesis, in which preparation and modification of CNCs were performed simultaneously and the obtained CNCs with carboxyl groups could act ...
- DOI:
- 10.1007/s10570-014-0491-0
- https://doi.org/10.1007/s10570-014-0491-0
46. Antibacterial hybrid cellulose–graphene oxide nanocomposite immobilized with silver nanoparticles
- Author:
- Soon Wei Chook; Chin Hua Chia; Sarani Zakaria; Mohd Khan Ayob; Nay Ming Huang; Hui Min Neoh; Rahman Jamal
- Source:
- RSC advances 2015 v.5 no.33 pp. 26263-26268
- ISSN:
- 2046-2069
- Subject:
- Escherichia coli; Staphylococcus aureus; ammonia; antibacterial properties; aqueous solutions; asymmetric membranes; cellulose; electrostatic interactions; graphene oxide; ions; leaching; moieties; nanocomposites; nanosilver; silver
- Abstract:
- ... A hybrid nanocomposite cellulose membrane containing graphene oxide and silver nanoparticles was produced via a two step synthesis method. First, regenerated cellulose membranes containing different percentages of graphene oxide (GO) were produced by coagulating the mixture in an acid coagulating bath. Afterward, silver nanoparticles (AgNPs) were in situ synthesized onto the membranes using the mo ...
- DOI:
- 10.1039/c5ra01897h
- https://doi.org/10.1039/c5ra01897h
- Author:
- Jorge Padrão; Raul Machado; Margarida Casal; Senentxu Lanceros-Méndez; Ligia R. Rodrigues; Fernando Dourado; Vitor Sencadas
- Source:
- International journal of biological macromolecules 2015 v.81 pp. 608-614
- ISSN:
- 0141-8130
- Subject:
- Escherichia coli; Fourier transform infrared spectroscopy; Staphylococcus aureus; adsorption; anti-infective agents; antibacterial properties; antibiotic resistance; aqueous solutions; biocompatible materials; cattle; crosslinking; fish; food packaging; gelatin; glutaraldehyde; lactoferrin; medical equipment; microorganisms; nanofibers; vapors
- Abstract:
- ... The increase of antibiotic resistant microorganisms urged the development and synthesis of novel antimicrobial biomaterials to be employed in a broad range of applications, ranging from food packaging to medical devices. This work describes the production and characterization of a protein-based electrospun fibrous membranes bearing antimicrobial properties. Its composition is exclusively comprised ...
- DOI:
- 10.1016/j.ijbiomac.2015.08.047
- https://doi.org/10.1016/j.ijbiomac.2015.08.047
- Author:
- Keisuke Nakamura; Kirika Ishiyama; Hong Sheng; Hiroyo Ikai; Taro Kanno; Yoshimi Niwano
- Source:
- Journal of agricultural and food chemistry 2015 v.63 no.35 pp. 7707-7713
- ISSN:
- 0021-8561
- Subject:
- Actinobacillus actinomycetemcomitans; DNA; Enterococcus faecalis; Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Pseudomonas aeruginosa; Staphylococcus aureus; Streptococcus mutans; antibacterial properties; aqueous solutions; blue light; caffeic acid; chlorogenic acid; disinfection; epigallocatechin; gallic acid; irradiation; light intensity; mechanism of action; proanthocyanidins; wavelengths
- Abstract:
- ... The bactericidal effect of various types of photoirradiated polyphenols against Gram-positive and -negative bacteria was evaluated in relation to the mode of action. Gram-positive bacteria (Enterococcus faecalis, Staphylococcus aureus, and Streptococcus mutans) and Gram-negative bacteria (Aggregatibacter actinomycetemcomitans, Escherichia coli, and Pseudomonas aeruginosa) suspended in a 1 mg/mL po ...
- DOI:
- 10.1021/jf5058588
- https://doi.org/10.1021/jf5058588
- Author:
- Margarida M. Fernandes; Diana Rivera; Antonio Francesko; Rasa Šližytė; Revilija Mozuraitytė; Katariina Rommi; Raija Lantto; Tzanko Tzanov
- Source:
- Process Biochemistry 2015 v.50 pp. 1843-1851
- ISSN:
- 1359-5113
- Subject:
- Escherichia coli; Staphylococcus aureus; antibacterial properties; antioxidant activity; aqueous solutions; cosmetics; fibroblasts; fish; fish feeds; fish processing plants; fish protein hydrolysate; fish waste; fisheries; ingredients; microbial contamination; nanospheres; odors; raw fish; raw materials; tea; trees; trypsin
- Abstract:
- ... Salmon backbones, co-streams of salmon processing industry, were transformed into stable, odour-free ingredients for cosmetics. First, the backbones were hydrolysed using commercial proteases (Bromelain+Papain, Trypsin, Corolase® 7089 and Protamex®) in order to accomplish the release of fish protein hydrolysates (FPH), which showed antioxidant activity and aptitude to inhibit skin-degrading and in ...
- DOI:
- 10.1016/j.procbio.2015.08.001
- https://doi.org/10.1016/j.procbio.2015.08.001
- Author:
- Rahisuddin; Shaeel Ahmed AL-Thabaiti; Zaheer Khan; Nikhat Manzoor
- Source:
- Bioprocess and biosystems engineering 2015 v.38 no.9 pp. 1773-1781
- ISSN:
- 1615-7591
- Subject:
- Candida albicans; Candida glabrata; Candida tropicalis; Escherichia coli; Staphylococcus aureus; antifungal properties; aqueous solutions; bacteria; biomimetics; biosynthesis; cell walls; cetyltrimethylammonium bromide; fungi; ions; lemons; nanosilver; silver; structural proteins; toxicity
- Abstract:
- ... Biomimetic and economic method for the synthesis of silver nanoparticles (AgNPs) with controlled size has been reported in presence of shape-directing cetlytrimethylammonium bromide (CTAB). Biochemical reduction of Ag⁺ ions in micellar solution with an aqueous lemon extract produced spherical and polyhedral AgNPs with size ranging from 15 to 30 nm. The influence of [CTAB] and [lemon extract] on th ...
- DOI:
- 10.1007/s00449-015-1418-3
- https://doi.org/10.1007/s00449-015-1418-3
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