Wyniki wyszukiwania - AGRO

1

Expression of recombinant porcine lactoferrin N-lobe in Pichia methanolica and its antibacterial activity

100%

Shan T. Z., Wang Y. Z., Liu G. F., Huang H. Q.

Journal of Animal and Feed Sciences

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2007

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tom 16

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nr 2

283-292

2

Phytochemical profile and antibacterial activity of crude extracts of the pod of Aframomum angustifolium (Sonn.) K. Schum.

88%

Anywar G. U., Kirimuhuzya C.

European Journal of Biological Research

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2015

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tom 05

|

nr 2

3

Antibacterial activity of alkyltriphenylphosphonium salts

88%

Golebiewski W. M., Wilkowska E., Cieniecka-Roslonkiewicz A.

Pestycydy

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2002

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nr 1-4

4

Comparison of in vitro antibacterial activity of meropenem and gentamicin encapsulated in liposomes

88%

Drulis-Kawa Z., Gubernator J., Dorotkiewicz-Jach A., Doroszkiewicz W., Kozubek A.

Cellular and Molecular Biology Letters

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2005

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tom 10

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nr Suppl.

5

Synthesis, antiprotozoal and antibacterial activity of nitro- and halogeno-substituted benzimidazole derivatives

88%

Kazimierczuk Z., Upcroft J. A., Upcroft P., Gorska A., Starosciak B., Laudy A.

Acta Biochimica Polonica

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2002

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tom 49

|

nr 1

Two series of benzimidazole derivatives were sythesised. The first one was based on 5,6-dinitrobenzimidazole, the second one comprises 2-thioalkyl- and thioaryl-sub- stituted modified benzimidazoles. Antibacterial and antiprotozoal activity of the newly obtained compounds was studied. Some thioalkyl derivatives showed remarkable activity against nosocomial strains of Stenotrophomonas malthophilia, and an activity comparable to that of metronidazole against Gram-positive and Gram-negative bacteria. Of the tested compounds, 5,6-dichloro-2-(4-nitrobenzylthio)-benzimidazole showed the most distinct antiprotozoal activity.

6

Antimicrobial activity of 2,4-dihydro-[1,2,4]triazol-3-one derivatives

88%

Stefanska J., Struga M., Tyski S., Kossakowski J., Dobosz M.

Polish Journal of Microbiology

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2008

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tom 57

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nr 2

Antibacterial and antifungal activity of 2,4-dihydro-[1,2,4]triazol-3-one derivatives were examined by the disc-diffusion method (growth inhibition zone diameter in agar medium). The MIC's for the most active agents were determined. Of all the tested compounds, aminomethy1 derivatives of 2,4-dihydro-[1,2,4]triazol-3-one exhibit activity against the majority of microorganisms studied.

7

Evaluation of the antibacterial activity of cystatin against selected strains of Escherichia coli

75%

Szpak M., Trziszka T., Polanowski A., Grubek J., Golab K., Juszczynska K., Janik P., Malicki A., Szyplik K.

Folia Biologica

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2014

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tom 62

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nr 3

8

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In vitro antibacterial activity of Eclipta alba (L.) Hassk

75%

Selvamani S., Balamurugan S.

International Letters of Natural Sciences

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2014

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tom 16

The antibacterial activity of Eclipta alba against three gram positive and five gram negative bacterial strains was investigated. The fresh whole plants were collected from Chidambaram, Tamil Nadu. Petroleum ether, chloroform, ethyl acetate, acetone, methanol and aqueous extracts at different concentrations (1, 2, 5, 10 mg/ml) were used to investigate the antibacterial activity. NCCL standards were strictly followed to perform antibacterial disc susceptibility test using disc diffusion method. The extracts showed varying degree of inhibitory potential against all the tested bacteria. Methanol extract of the plant had higher inhibitory action against Staphylococcus aureus, Bacillus subtilis, Proteus mirabilis and Pseudomonas fluroescens.

9

Antibacterial activity of ethanolic extracts of some moss species

75%

Karpinski T. M., Adamczak A.

Herba Polonica

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2017

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tom 63

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nr 3

Introduction: For centuries, mosses have been used in traditional medicine due to their antibacterial, antifungal, and antiviral activities. Objective: The present study was designed to evaluate the antibacterial activity of ethanolic extracts obtained from 12 moss species: Brachythecium albicans, Bryum argenteum, Ceratodon purpureus, Dicranum scoparium, Dryptodon pulvinatus, Orthotrichum anomalum, Oxyrrhynchium hians, Plagiomnium undulatum, Polytrichum juniperinum, P. piliferum, Schistidium crassipilum, and Syntrichia ruralis. Methods: The antimicrobial activity of extracts was investigated against three Gram(+) bacteria (Enterococcus faecalis, Staphylococcus aureus, and Streptococcus pyogenes) and two Gram(-) bacteria (Escherichia coli and Klebsiella pneumoniae), using the agar disc-diffusion method. Results: The high activity against all investigated bacteria was determined for extracts of D. pulvinatus, P. undulatum, B. argenteum, S. crassipilum, O. anomalum (mean inhibition zone: 11.3–13.1 mm) and to a lesser extent in the case of D. scoparium (8.3 mm). Extracts from P. juniperinum and P. piliferum showed activity only against Gram-positive bacteria, with an inhibition zone from 7.3 to 9.7 mm. Four species: B. albicans, C. purpureus, O. hians, and S. ruralis had not antibacterial properties. Conclusions: The obtained results indicate that mosses could be a significant source of antibacterial agents. For the first time, we presented antibacterial activity of ethanolic extracts from S. crassipilum and O. anomalum.

10

Phytochemical composition and antibacterial activity of ethanolic extract from trunk of Rothmannia wittii (Craib) Bremek. (Rubiaceae) newly found in Vietnam

75%

Van H. T., Nguyen T. T., Ton H. T. T., Dinh K. T. T., Le V. S., Pham T. V., Tran G. B.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2020

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tom 101

|

nr 4

11

Antibacterial study of the medium chain fatty acids and their 1-monoglycerides: individual effects and synergistic relationships

75%

Batovska D. I., Todorova I. T., Tsvetkova I. V., Najdenski H. M.

Polish Journal of Microbiology

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2009

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tom 58

|

nr 1

43-47

The antibacterial activity of the medium chain fatty acids and their 1-monoglycerides was evaluated towards several Gram-positive strains belonging to the genera Staphylococcus, Corynebacterium, Bacillus, Listeria and Streptococcus. The 1 -monoglycerides were more active than the fatty acids with monolaurin being the most active compound. Interesting effects were observed when the streptococcal strain Streptococcus pyogenes was used as a test microorganism. First, blocking of the hydroxyl groups of the glycerol moiety of monolaurin led to a compound with remarkable antibacterial activity (MIC, 3.9 μg/ml). Secondly, synergistic relationships were observed between monolaurin and monocaprin as well as between monolaurin and the poorly active lauric acid when their two component mixtures were examined. The mixtures in which one of the components was 2-fold more predominant than the other one were much more active than the pure components taken individually. Moreover, the presence of the components in ratio 1:1 was disadvantageous. Synergistic relationships were also found between monolaurin and monomyristin towards Staphylococcus aureus 209 when monomyristin was in the same quantity as monolaurin or in shortage.

12

Studies on biosynthesis of silver nanoparticles using Rhizopus sp. and its antibacterial efficacy on E. coli MDR strains

75%

Hiremath J., Rathod V., Ninganagouda S., Singh D., Prema K.

International Letters of Natural Sciences

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2014

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tom 18

Nanotechnology is a field that is burgeoning day by day, making an impact in all spheres of human life. Biological methods of synthesis have paved way for the “greener synthesis” of nanoparticles and these have proven to be better methods due to slower kinetics, they offer better manipulation and control over crystal growth and their stabilization. In this context we have investigated extracellular biosynthesis of silver nanoparticles (AgNPs) using cell-free extract of Rhizopus spp.. Formation of AgNPs was indicated by the change in the colour of the cellfree extract from yellow to dark brown under static condition after 48 hrs of incubation. Characterization of AgNPs was carried out by UV-Vis Spectroscopy which gave sharp plasmon resonance peak at 429 nm corresponding to spherical shaped nanoparticles. Transmission electron microscopy (TEM) micrograph showed formation of well-dispersed AgNPs in the range of 25-50 nm. Scanning electron microscopy (SEM) showed the particles to be uniformly dispersed without agglomeration with smooth morphology. EDS showed the presence of elemental silver at 3kev. X-ray diffraction (XRD)-spectrum of the AgNPs exhibited 2θ¸ values corresponding to nanocrystal. These biosynthesized AgNPs were used to study their antimicrobial activity against Multi-drug resistant (MDR) E. coli strains, by Agar diffusion method. Zone of inhibition was measured. Synthesis of nanosized particles with antibacterial properties, which are called "nanoantibiotics", is of great interest in the development of new pharmaceutical products.

13

Optimal conditions for levan biopolymer production and its use in the synthesis of bactericidal levan-ZnO nanocomposite

75%

Taran M., Lotfi M., Safaei M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2019

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tom 100

|

nr 4

14

Morphostructural damage of foodborne bacterial pathogens influenced by swamp cranberry (Vaccinium oxycoccos L.) pomace extract treatment as revealed by transmission electron microscopy (TEM)

75%

Stobnicka-Kupiec A., Gniewosz M.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2019

|

tom 598

15

Antibacterial activity of Ulva fasciata against multidrug resistant bacterial strains

75%

Chandrasekaran M., Venkatesalu V., Raj G. A., Krishnamoorthy S.

International Letters of Natural Sciences

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2014

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tom 14

The present study was conducted to evaluate the antibacterial activity of different organic solvent increasing polarity viz., hexane, chloroform, ethyl acetate, acetone and methanol extracts of Ulva fasciata (Chlorophyceae) were collected from Kanniyakummari, Gulf of Mannar biosphere Reserve, Tamilnadu, India. Marine green algae extracts of U. fasciata against multi-drug resistant standard and clinical bacterial strains viz., Bacillus subtilis, Streptococcus pyogenes, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella typhimurium, Vibrio cholerae, Shigella flexneri, Proteus mirabilis and P. vulgaris. The ethyl acetate extracts of U. fasciata showed highest antibacterial activity against all the bacterial strains tested. The mean zone of inhibition produced by the extracts in disc diffusion assays were ranged from 7.1 mm to 15.0 mm. The Minimum Inhibitory Concentrations (MIC) were between 125 μg/ml and 500 μg/ml, while the Minimum Bactericidal Concentrations (MBC) were between 250 μg/ml and 1000 μg/ml. The highest mean of zone inhibition (15.0 mm) and lowest MIC (125 μg/ml) and MBC (250 μg/ml) values were observed in ethyl acetate extract of U. fasciata against B. subtilis. The ethyl acetate extract of the U. fasciata showed the presence of phytochemicals, terpenoids, tannins and phenolic compounds in U. fasciata than the other solvents extracts. The present results of the ethyl acetate extract of U. fasciata can be used as an antibacterial substance for the treatment of multi drug resistant bacterial infections.

16

Silver tolerance and silver nanoparticle biosynthesis by Neoscytalidium novaehollandae and Trichoderma inhamatum

75%

Hussein M. A.

European Journal of Biological Research

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2016

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tom 06

|

nr 1

17

Antifungal activity of triterpenoid isolated from Azima tetracantha leaves

75%

Duraipandiyan V., Gnanasekar M., Ignacimuthu S.

Folia Histochemica et Cytobiologica

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2010

|

tom 48

|

nr 2

311-313

18

Influence of phosphorohydrazone derivatives of benzopyrones on polymerization and viscosity of fibrin

75%

Michalska M., Pajak W., Kolodziejska J., Lazarenkow A., Nawrot-Modranka J.

Acta Biochimica Polonica

|

2008

|

tom 55

|

nr 3

613-617

The synthesis and antitumour and antibacterial activity of coumarin and chromone phosphorohydrazones have been reported. This study describes influence of phosphorohydrazones derivatives of coumarin and chromone on the polymerization and viscosity of fibrin. The fibrin polymerization assay was performed by the Shen and Lorand method and the clot viscosity was measured on the basis of Shen and Lorand and Marchi and coworkers methods. Among the eight compounds tested, one coumarin derivative and two chromone derivatives showed significant activity

19

Effect of Pseudomonas aeruginosa crude proteolytic fraction on antibacterial activity of Galleria mellonella haemolymph

75%

Andrejko M.

Folia Biologica

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2004

|

tom 52

|

nr 1-2

20

The antibacterial activity of some 2,4-dihydroxythiobenzanilides substituted in the N-aryl ring

75%

Niewiadomy A., Matysiak J., Macik-Niewiadomy G.

Pestycydy

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2000

|

nr 3-4

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