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Bio-functionalization of phytogenic Ag and ZnO nanobactericides onto cellulose films for bactericidal activity against multiple drug resistant pathogens / S. Baker [et al.] // J. Microbiol. Methods. - 2019. - Vol. 159. - P. 42-50, DOI 10.1016/j.mimet.2019.02.009. - Cited References: 59 . - ISSN 0167-7012. - ISSN 1872-8359

РУБ Biochemical Research Methods + Microbiology
Рубрики:
SILVER NANOPARTICLES
   ANTIMICROBIAL ACTIVITY
   SIZE
   COMPOSITES
   MEMBRANE
Кл.слова (ненормированные):
Bupleurum aureum -- Rio-functionalization -- Silver nanobactericides -- Zinc oxide nanobactericides -- Multi-drug resistance pathogens -- Bacterial cellulose
Аннотация: The present study describes the synthesis of silver and zinc oxide nanobactericides from the phytogenic source Bupleurum aureum The synthesized nanobactericides were characterized and evaluated for bio-functionalization onto bacterial cellulose membrane which was synthesized by Komagataeibactencylinus B-12068 culture strain. The synthesis of nanobacterides were initially confirmed using UV-Visible spectroscopy which indicated localized surface resonance (LSPR) peaks at 415 nm for silver nanobactericides and 280 nm for zinc nanobactericides. The nature of the capping agent for synthesized nanobactericides was predicted using FTIR which confirmed the presence of functional moieties. XRD analysis revealed their crystalline nature while morphological characteristics were studied using TEM which confirmed the polydispersity of nanobactericides with the average size in the range of 20-25 nm. The nanobactericides were tested for their antimicrobial activity against seven multi-drug resistant pathogens which were clinically isolated from patients suffering from a myriad of microbial infections. The tested pathogens had antimicrobial resistance to ten different antibiotics and have been reported to be the major cause of nosocomial infections. The nanobactericides displayed significant activity against the test pathogens. Silver nanobactericides showed the highest activity against Escherichia coli strain 55 with a 24 mm zone of inhibition while zinc oxide nanobactericides displayed the highest activity against methicillinresistant Staphylococcus aureus (MRSA) with a 20 mm inhibition zone. The bio- functionalized cellulose films (BCF) were characterized using SEM along with physicochemical analysis. The BCF's were evaluated for anti-bacterial activity against test pathogens which resulted in marked antimicrobial potential against multi-drug resistant bacteria and therefore has the potential to be utilized as an efficient alternative to counter drug resistant pathogens.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyakast 1, Krasnoyarsk 660022, Russia.
RAS, KSC SB, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.
}
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    Phytogenic Synthesis of Ag Bionano-Antibiotics Against ESKAPE Drug Resistant Communities in Krasnoyarsk, Siberia / B. Syed [et al.] // J. Cluster Sci. - 2019. - Vol. 30, Is. 3. - P. 589-597, DOI 10.1007/s10876-019-01518-7. - Cited References: 44. - uthors are thankful for facilities provided by Siberian Federal University to carry out the present study. Authors are grateful to Krasnoyarsk Medical University for providing opportunity to carry out the present study. . - ISSN 1040-7278
   Перевод заглавия: Фитогенный синтез биологических нано-антибиотиков на основе серебра против фармакорезистентных болезнетворных микроорганизмов, распространенных в Красноярске, Россия
Кл.слова (ненормированные):
Heracleum dissectum -- Silver nano-antibiotics -- ESKAPE -- Antimicrobial-resistant -- Krasnoyarsk -- Siberia
Аннотация: The present study reports synthesis of silver nano-antibiotics from aqueous extract of H. dissectum. The nano-antibiotics were characterized using UV–visible spectra which displayed maximum absorbance at 430 nm. The role of phytocomponents as reducing agent and stabilization of silver nano-antibiotics was depicted with Fourier-transform infrared spectroscopy which revealed presence of hydroxyl and carboxyl groups associated with silver nano-antibiotics. The crystalline nature was studied with X-ray diffraction which showed Bragg’s intensities at 2θ angle which denoted (101), (111), (200), (220), (311) planes. The morphological characteristics were studied using Transmission Electron Microscopy to reveal the size ranging from 5 to 50 nm. The bactericidal activity of nano-antibiotics was studied via well diffusion and minimal inhibitory concentration assay against members of drug-resistant communities bearing resistant to more than ten standard antibiotics. Nano-antibiotics displayed highest activity against Ps. aeruginosa strain 55 and Methicillin-resistant Staphylococcus aureus with 16 mm zone of inhibition followed by Kl. pneumoniae strain 104 and E. coli strain 55. Moderate activity was observed against Ac. baumannii strains with 12 mm zone of inhibition. The obtained results envision the role of plant mediated nano-antibiotics as one of the best suited alternatives towards combating drug resistant pathogens.

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Держатели документа:
Department of Microbiology, Krasnoyasrk State Medical University named after Prof. VF. Voino-Yasenetskiy, Partizana-Zheleznyaka Street, 1, Krasnoyarsk, 660022, Russian Federation
Siberian Federal University, Svobodnyy pr., 79, Krasnoyarsk, 660041, Russian Federation
School of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russian Federation
Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Akademgorodok 50, Bld. 38, Krasnoyarsk, 660036, Russian Federation
School of Petroleum and Natural Gas Engineering, Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Environmental Sciences, Jozef Stefan Institute, Jamova 39, Ljubljana, 1000, Slovenia
Department of Biotechnology, M. M. Engineering College, Maharishi Markandeshwar University (MMU), Mullana, Ambala, India

Доп.точки доступа:
Syed, B.; Prudnikova, S. V.; Perianova, O. V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.; Chouhan, R. S.; Potkina, N. K.; Khohlova, O. Y.; Lobova, T. I.; Singh, M.
}
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    Antimicrobial properties of nanofiltration membranes modified with silver nanoparticles / R. Khaydarov, O. Gapurova, M. Abdukhakimov [et al.] // Emerg. Mater. - 2022. - Vol. 5, Is. 5. - P. 1477-1483, DOI 10.1007/s42247-021-00330-2. - Cited References: 31. - The SEM and TEM analysis was carried out in the SFU Joint Scientific Center under the support of the Ministry of Science and Higher Education of the Russian Federation (#FSRZ-2020-0011) . - ISSN 2522-5731. - ISSN 2522-574X
   Перевод заглавия: Антимикробные свойства нанофильтрационных мембран, модифицированных наночастицами серебра

РУБ Materials Science, Multidisciplinary

Кл.слова (ненормированные):
Nanofiltration -- Membrane -- Silver -- Nanoparticle -- Antimicrobial -- Biofouling -- Polyhexamethylene biguanide
Аннотация: The growth of bacteria and fungi on a nanofiltration (NF) membrane is known to reduce its permeability and lifetime and increase overall energy use. Over the last decade, application of silver nanoparticles (AgNPs) has shown to present a strong potential in preventing biofouling of NF membrane processes. The paper deals with a novel facile method developed to in situ incorporate nanosilver stabilized with the polyhexamethylene biguanide hydrochloride (PHMB) onto the commercial NF membrane surface. The scanning electron microscopy (SEM) investigations confirmed a uniform distribution of AgNPs on the surface of NF membrane although AgNPs tend to agglomerate into nano-sized colloidal clusters. Our results showed that AgNPs had little impact on the performance of the NF membrane, including salt rejection and water permeation properties. To evaluate the antibacterial properties of nanocomposite membranes, a "time-kill" analysis, a microbiological technique for measuring the change in a population of microorganisms under the impact of a specific sample, has been used against representatives of Gram-positive and Gram-negative bacteria. Inductively coupled mass spectrometry (ICP-MS) was used to study kinetics of Ag release from modified NF membrane. Leaching rates of Ag were low that will possibly result in long-established antimicrobial and antifungal properties. The present research offers a potential for its further use as a new type of modified NF membrane mitigating biofouling.

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Держатели документа:
Acad Sci Uzbek, Inst Nucl Phys, 1 Xuroson, Tashkent 100214, Uzbekistan.
JSS Acad Higher Educ & Res, Dept Pharmacol, JSS Coll Pharm, Ooty 643001, Tamil Nadu, India.
Siberian Fed Univ, 79 Svobodny Ave, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia.
Fed Res Ctr KSC SB RAS, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Khaydarov, R.; Gapurova, O.; Abdukhakimov, M.; Sadikov, I.; Garipov, I.; Krishnamurthy, P. T.; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Зеер, Галина М.; Abolentseva, P. A.; Prudnikova, S. V.; Evgrafova, S. Y.; SFU Joint Scientific Center; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
}
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