biocompatibility and antimicrobial activity of some quaternized polysulfones

... analogs of crown ethers, is their potential catalytic activity and ion-carrier properties The synthesis of host molecules that are capable of binding neutral organic molecules as guests is an area of ... In view of these and several other possible applications, the present work deals with the synthesis and characterization of some new phosphorus macrocycles with nitrogen, oxygen, sulfur, and phosphorus ... center of the National Research Center, Giza The results of elemental microanalyses were satisfactory and did not exceed 0.4% for carbon and hydrogen and 0.42% for nitrogen The purity of the...

Ngày tải lên: 12/01/2022, 22:37

... Turkish Journal of Chemistry http://journals.tubitak.gov.tr/chem/ doi:10.3906/kim-1509-21 Research Article Synthesis, and prediction of molecular properties and antimicrobial activity of some acylhydrazones ... acylhydrazone C=O, and some of the aromatic C-atoms and C-atoms of methionine moiety as two, three, or four peaks instead of one, thus provided confirmatory evidence for the presence of isomers 29 Low-resolution ... Candida albicans and the saprophyte Saccharomyces cerevisiae and their activity profile was qualified as insignificant, except for compounds 7–9 with modest anti-Candida activity (MIC values of...

Ngày tải lên: 13/01/2022, 00:04

... The composition and structure of products 4a–d were confirmed by the results of elemental analysis and data of IR and NMR spectra The infrared of structure displayed absorption band assignable ... representative panel of fungal strains i.e Aspergillus fumigatus, and Candida albicans The organisms were tested against the activity of solutions of concentrations (1  mg/mL) and using inhibition ... the activity of the tested compounds against the tested filamentous fungus A fumigatus, the order of activity 4a, 3d, and 4b No antimicrobial activities were detected for compounds 3a, 3c and...

Ngày tải lên: 29/05/2020, 14:57

... The density of cells was read at 610 nm and adjusted to an optical density (OD) of 0.04 for Grampositive bacteria, and 0.05 for Gram-negative bacteria and C albicans Aliquots of 50 µL of 426 Identification ... considered as one of the important characteristics in the 428 Identification and antimicrobial activity of actinomycetes strains isolated from marine … identification of Streptomyces and it greatly ... V., and Cuong P V - Isolation, screening and identification of microorganisms having antimicrobial activity isolated from samples collected on seabed of Northeast Vietnam, Vietnam Journal of Biotechnology...

Ngày tải lên: 14/01/2020, 03:35

... used for each concentration) Antimicrobial and antibiofilm activity The effect of AgNPs and AgNO3 on antimicrobial activity against 27 strains of anaerobic bacteria and reference strains was investigated ... growth of 11 (61%) strains of Gram-negative bacteria and all (100%) of the investigated strains of Gram-positive bacteria (Table 2A and Table 2B) Among the most susceptible anaerobes were strains of ... epidermidis and Streptococcus mutans 1-day biofilm, additionally indicating the capping agent-dependent antibiofilm activity of AgNPs It was observed that AgNPs decreased Staphylococcus aureus biofilm activity...

Ngày tải lên: 15/01/2020, 11:50

... The density of cells was read at 610 nm and adjusted to an optical density (OD) of 0.04 for Grampositive bacteria, and 0.05 for Gram-negative bacteria and C albicans Aliquots of 50 µL of 426 Identification ... considered as one of the important characteristics in the 428 Identification and antimicrobial activity of actinomycetes strains isolated from marine … identification of Streptomyces and it greatly ... V., and Cuong P V - Isolation, screening and identification of microorganisms having antimicrobial activity isolated from samples collected on seabed of Northeast Vietnam, Vietnam Journal of Biotechnology...

Ngày tải lên: 03/03/2020, 20:57

... (Schemes  and 2) The structures of the obtained compounds were established on the basis of elemental analyses and spectral data.IR spectra of compounds 3–17 showed the absence of N=C=S group and presence ... and anticancer activity [19–22] The mechanism of anticancer activity may involve a wide range of different mechanisms, such as cell cycle arrest in the G1 phase [23] and inhibition of © 2016 Ghorab ... trial to suggest a mechanism of action for their cytotoxic activity Results and discussion Chemistry The aim of this work was to design and synthesize a new series of thioureidobenzenesulfonamide...

Ngày tải lên: 29/05/2020, 14:11

... and Michelia macclurei Dandy Guangdong Agricultural Sciences, 23: 110–113 Mothana R A A and Lindequist U., 2005 Antimicrobial activity of some medicinal plants of the island Soqotra Journal of ... Chemical composition and antimicrobial activity of the leaf and twig essential oils of Magnolia hypolampra (Dandy) Figlar growing in Na Hang Nature Reserve, Tuyen Quang Province of Vietnam Natural ... Analysis Average and standard seviation values of diameters of microorganism inhibition zone in the test were calculated using software Excel RESULTS AND DISCUSSION Chemical composition of Magnolia...

Ngày tải lên: 27/09/2020, 13:34

... IR, H NMR, and 13 C NMR spectroscopy and elemental analyses All of the indoles were tested for in vitro antimicrobial activity against isolates of bacteria and a fungus including Staphylococcus ... elucidated by IR, H NMR, and 13 C NMR spectroscopy and elemental analyses Their antimicrobial activities against the variety of selected bacteria and a fungus were investigated and reported as minimum ... evaluated for the synthesis of novel antibacterials In conclusion, we report the synthesis and antimicrobial activities of a long series of amino, hydrazino, alkyl, and aryl substituted 5H -pyridazino[4,5-b...

Ngày tải lên: 12/01/2022, 22:40

... on the Antimicrobial Activity of Natural and Artificial (Adulterated) Honey Produced in Some Localities in Ghana Matthew Glover Addo*, Abdul Hakim Mutala and Kingsley Badu Department of Theoretical ... application of honey as a therapeutic product (Kwakman et al., 2011) the natural and artificial (adulterated) honeys in relation to their antimicrobial activity by comparing the antimicrobial activity of ... observation of the open market honey reveals off colors and sometimes a different taste and thickness compared to natural honey Since pure honey is known to have antimicrobial properties, consumers of...

Ngày tải lên: 06/08/2020, 00:36

... anticancer and antibacterial activity of membrane active peptides, suggests that the anticancer activity is also due to penetration and disruption of the membranes of the cancer cells The selectivity of ... concentration of 4.9 mM and a measured pH of 4.12 NMR spectra were acquired on a Varian Inova-600 NMR spectrometer at a 1H frequency of 600 MHz and 13C Table Antibiotic activites of Citropin 1.1 and synthetic ... that of a well defined a-helical and amphipathic peptide [9] A number of synthetically modified citropin peptides have significantly greater anticancer and antibacterial activity (and also nNOS activity)...

Ngày tải lên: 17/03/2014, 09:20

... OF EDUCATION & TRAINING VIET NAM ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY - - NGO HANH THUONG SYNTHESIS AND IDENTIFICATION BIOLOGICAL ACTIVITY OF ... increase activity and some cases avoidance Drug resistance versus one component Thus, the synthesis of new derivatives and cytotoxic activity assays for the detection of antitoxin-active agents of ... Topoisomerase is of great scientific and practical significance Therefore, we chose to study "Synthesis and identification biological activity of some indenoisoquinoline derivatives" The task of...

Ngày tải lên: 09/01/2020, 15:23

... health and fitness through the use of more natural products Herbs and spices are important part of the human diet They have been used for thousands of years to enhance the flavor, color and aroma of ... biodiversity has a dismal share of the world market due to export of crude extracts and drugs And in this thesis the antimicrobial activity of Methanol extract of Betel leaves was evaluated against ... activity of hydroxychavicol isolated from Piper betle L Journal of Annals of Clinical Microbiology and Antimicrobials, 9(1):702-706 Aznita, H 2011 Determination of the percentage inhibition of...

Ngày tải lên: 14/01/2020, 01:47

... OF EDUCATION & TRAINING VIET NAM ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY - - NGO HANH THUONG SYNTHESIS AND IDENTIFICATION BIOLOGICAL ACTIVITY OF ... increase activity and some cases avoidance Drug resistance versus one component Thus, the synthesis of new derivatives and cytotoxic activity assays for the detection of antitoxin-active agents of ... Topoisomerase is of great scientific and practical significance Therefore, we chose to study "Synthesis and identification biological activity of some indenoisoquinoline derivatives" The task of...

Ngày tải lên: 15/01/2020, 10:33

... 3 Laboratory of Microbiology and Antimicrobial Substances, Department of Biochemistry, Faculty of Sci‑ ence, University of Dschang, PO Box 067, Dschang, Republic of Cameroon  Laboratory of Analytical and Molecular ... interesting activity against a wide range of microorganisms [35–37], no study has hitherto been reported on the activity of the azo dyes 7a–e and their precursors 3, and 6a–e against these types of pathogenic ... the antimicrobial activity based on the substitution patterns of the aromatic rings Effects of azo functionality to the activity of compounds It results from Table  that the microbicidal activity...

Ngày tải lên: 29/05/2020, 12:39

... MCF-7, and the antibacterial activity of HCT-116 on human cancer cell lines against Streptococcus pneumonia and Bacillus subtilis as examples of Gram-positive bacteria and Pseudomonas aeruginosa and ... well as some fungal-plants The results proved that some prepared compounds showed an adequate inhibitory efficiency of growth of Gram-positive and Gram-negative bacteria Antimicrobial activity ... as standards for bacteria and fungi, respectively After incubation, antimicrobial activity was evaluated by measuring the zone of inhibition against the tested microorganisms Antimicrobial activity...

Ngày tải lên: 29/05/2020, 13:09

... Evaluation of Antimicrobial Activity of ZITRITIDE, A Natural and Organic Antimicrobial Fogging Solution with Special Reference for Infection Prevention and Control in Hospital Environments and All ... application of the product and listed out Then the antimicrobial activity of each product concentration against each microorganism was assessed as per section 2.4 Assessment of antimicrobial activity ... clinical professionals, patients, attendants, visitors and supporting staffs in hospitals To our knowledge this is the first of its kind of natural and organic fogging solution where the antimicrobial...

Ngày tải lên: 23/07/2020, 00:01

... Study of Fish Samples Collected from Different Markets in Some Egyptian Governorates and Antimicrobial Sensitivity of Isolates Elham I Atwa* Hafr Al Batin University, College of Science and Arts ... all over the body and darkness of skin Differentiation and characterization of various isolates was based on their growth characteristics on specific culture media (biochemical and gram staining ... examined fish samples were sensitive to enrofloxacin, norfloxacin, ciprofloxacin and kanamycin Most of these strains were highly resistant to erythromycin and a moxycillin PCR panel could help for...

Ngày tải lên: 27/09/2020, 13:08

... www.mdpi.com/journal/pathogens Article Antimicrobial and Antibiofilm Activity of Chitosan on the Oral Pathogen Candida albicans Eduardo Costa, Sara Silva †, Freni Tavaria † and Manuela Pintado * Universidade ... biofilms by ca 65% and dual species biofilms (C albicans and S mutans) by ca 70% These results display the potential of this molecule to be used as an effective anti-Candida agent capable of ... Friedman, Friedman and Nosanchuk [22], who reported that chitosan was capable of reducing C albicans biofilm formation by a 2.5 factor, and by those of Cobrado et al [26] and of Cobrado et al [27],...

Ngày tải lên: 19/11/2022, 11:38

... respect of semantics, “glad” and “pleased” have one of their senses of denoting the feeling of pleasure when something good has happened. “Cheerful” has one of three senses suggesting one of the ... intransitive and mono-transitive verb in the first sense of “give shouts of joy, praise, support and encouragement (to somebody or a team or a cast of performers)”. In the second sense of “make ... near-synonym of “happy”, for part of the meaning of “cheerful” suggests a good characteristic of somebody, not just a happy feeling when something good happens. “Cheerful” is a synonym of the old-fashioned...

Ngày tải lên: 12/02/2014, 20:20