scholarly journals Antimicrobial activity of bioactive component from flower of linum capitatum kit

2004 ◽  
Vol 3 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Slavica Ilic ◽  
Sandra Konstantinovic ◽  
Zoran Todorovic
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Bioactive Components ◽  
Bioactive Component ◽  
Bacillus Subtilus ◽  
Simplex Virus

Different extracts containing bioactive components and etheric oil of the flowers of Linum capitation kit. (Linacea) of Serbian origin were tested for an Antimicrobial activity against four bacteria (Staphylococcus aureus Escherichia coli, Bacillus subtilus, Pseudomonas aeruginosa), one mold (Aspergillus niger) and one yeast (Candida albicans). The isolated Flavonoids were also tested against Staphylococcus aureus, Escherichia coli Bacillus anhtracis, Pseudomonas aeruginosa, Aspergillus niger, Candida albicans and Herpes simplex virus type.

scholarly journals ANTIMICROBIAL ACTIVITY OF HYMENAEA COURBARIL L. FRUIT

2020 ◽  
pp. 200-203
Author(s):  
MARIANA NARVAEZ CORREA ◽  
OSCAR EDUARDO RODRÍGUEZ AGUIRRE ◽  
JANETH DEL CARMEN ARIAS PALACIOS
Keyword(s):  
Escherichia Coli ◽  
Saccharomyces Cerevisiae ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Hymenaea Courbaril ◽  
Test Conditions

Objective: The assessment of the antimicrobial activity of Hymenaea courbaril L. on different microorganisms was realized with four bacteria, Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Pseudomonas aeruginosa, two yeasts Candida albicans and Saccharomyces cerevisiae, and finally two filamentous fungi Aspergillus niger. Methods: The method of plates and wells was used, using extracts from the fruit of the plant mentioned above. These extracts were made with different solvents such as hexane, dichloromethane, ethanol, and aqueous. Results: It was determined that the dichloromethane extract of H. courbaril L. has antimicrobial activity against the bacterium S. aureus showing a percentage of inhibition of 1.47%. Conclusions: In comparison to bacteria, fungi do not represent a significant inhibitory capacity which represents that when comparing these extracts of this plant, under the test conditions evaluated, it was presented that they obtained antimicrobial activity against S. aureus.

scholarly journals Antimicrobial activity of soft and purified propolis extracts

Medicina ◽  
2008 ◽  
Vol 44 (12) ◽  
pp. 977 ◽  
Author(s):  
Alvydas Pavilonis ◽  
Algirdas Baranauskas ◽  
Ligita Puidokaitė ◽  
Žaneta Maželienė ◽  
Arūnas Savickas ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Candida Albicans ◽  
Phenolic Compounds ◽  
Klebsiella Pneumoniae ◽  
Gram Negative ◽  
Propolis Extract

Objective. To evaluate the antimicrobial activity of soft and purified propolis extracts. Study object and methods. Antimicrobial activity of soft and purified propolis extracts was determined with reference cultures of Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 33499, Pseudomonas aeruginosa ATCC 27853, Proteus mirabilis ATCC 12459, Bacillus subtilis ATCC 6633, Bacillus cereus ATCC 8035, and fungus Candida albicans ATCC 60193. Microbiological tests were performed under aseptic conditions. Minimum inhibitory concentration (MIC) – the highest dilution of preparation (the lowest concentration of preparation) that suppresses growth of reference microorganisms – was determined. Results. Concentration of phenolic compounds in soft propolis extract that possesses antimicrobial activity against gram-positive (Staphylococcus aureus, Enterococcus faecalis) and gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, and Proteus mirabilis) is 0.587±0.054 mg and 0.587±0.054–0.394±0.022 mg (P>0.05) and in purified propolis extract – 0.427±0.044 mg and 0.256±0.02 mg (P>0.05). Klebsiella pneumoniae is most resistant to soft propolis extract when the concentration of phenolic compounds is 1.119± 0.152 mg and to purified propolis extract when the concentration of phenolic compounds is 1.013±0.189 mg (P>0.05). Spore-forming Bacillus subtilis bacteria are more sensitive to soft and purified propolis extracts when the concentration of phenolic compounds is 0.134±0.002 mg and 0.075±0.025 mg, respectively, and Bacillus cereus – when the concentration is 0.394±0.022 mg and 0.256±0.02 mg (P>0.05). Sensitivity of fungus Candida albicans to soft and purified propolis extracts is the same as Bacillus subtilis. Encapsulated bacterium Klebsiella pneumoniae is most resistant to antimicrobial action of soft and purified propolis extracts as compared with gram-positive Staphylococcus aureus and Enterococcus faecalis bacteria (P<0.05), gram-negative Escherichia coli, Pseudomonas aeruginosa, and Proteus mirabilis (P<0.05), sporeforming Bacillus subtilis and Bacillus cereus bacteria (P<0.05), and fungus Candida albicans (P<0.05). There is no statistically significant difference between antimicrobial effect of soft propolis extract and purified propolis extract on gram-positive bacteria, gram-negative bacteria, spore-forming bacteria, encapsulated bacteria, and Candida fungus. Conclusions. Soft and purified propolis extracts possess antimicrobial activity. They could be recommended as natural preservatives in the manufacture of pharmaceutical products.

scholarly journals Microorganisms Isolated from Hospital Environmental Surfaces in Akure Metropolis, Ondo State, Nigeria

2019 ◽  
pp. 1-8
Author(s):  
O. G. Palmer ◽  
A. K. Onifade
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Klebsiella Pneumoniae ◽  
Streptococcus Pyogenes ◽  
Bacterial Isolates ◽  
Environmental Surfaces ◽  
Ondo State

Nosocomial infection is a rising problem in developing countries. Microorganisms Isolated from three private and public hospital environmental surfaces in Akure Metropolis, Ondo State, Nigeria were investigated in this study. Bacterial and fungal organisms were isolated and compared among the three hospitals. The study revealed that bacteria were the most predominant microorganisms found in the hospital environmental surfaces than fungi. Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae and Bacillus cereus were the bacterial isolates while fungi include Aspergillus fumigatus, Aspergillus niger and Candida albicans.  Staphylococcus aureus was found to be predominant bacteria but Aspergillus funmigatus was the predominant fungi. The result showed that the microbial loads of the public hospitals were higher than that of the private hospitals. The bacteria load of the male ward was found to be higher than that of the female ward while the fungal loads of each of the hospital environmental surfaces of female were higher than that of the male. The study revealed that bacteria were the most predominant microorganisms found in the hospital environment than fungi. Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae and Bacillus cereus were the bacterial isolates while fungi include Aspergillus fumigatus, Aspergillus niger and Candida albicans.  Staphylococcus aureus was found to be predominant bacteria. All the hospital environmental surfaces were contaminated with one or more microorganisms in the course of the research.

scholarly journals Development of technology of disinfectants based on soda production waste

2019 ◽  
Vol 140 ◽  
pp. 01004
Author(s):  
Elina Salmanova ◽  
Lyasan Araslanova ◽  
Iren Tuktarova ◽  
Alexey Nazarov
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Candida Albicans ◽  
Iodine Monochloride ◽  
Waste Production ◽  
Bacillus Subtilus ◽  
High Level ◽  
Technical And Economic Indicators

The main requirements for the development of fundamentally new disinfectants with a high level of efficiency are to reduce toxicity by increasing the technical and economic indicators in the technology of their application. In this paper, an innovative composition of a disinfectant based on iodine monochloride in the complex of waste production of soda and polyvinylpyrrolidone is proposed. The dependence of stability and antibacterial activity of the developed disinfectant is studied. High indicators of stability (3 years) and antibacterial activity were obtained on the example of Staphylococcus aureus (S. aureus), Enterococcus fecalis (E. fecalis), Pseudomonas aeruginosa (P. aerginosa), Bacillus subtilus (B. Subtilis No. 12) at the concentration 0.027-0.055, DS versus commercial drug Zhavilar. The antibacterial activity of the disinfectant DS, DS-1 is maintained up to 0.0044-0.0088 for Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans and Escherichia coli and exceeds the efficiency of the commercial drug Betadine by 8-28 times. Thus, the developed formulations are highly effective, while low-toxic and safe for the environment and humans.

scholarly journals Investigation of the Antimicrobial Activity of Rhaponticum (Rhaponticum Carthamoides D.C. Iljin) and Shrubby Cinquefoil (Potentilla Fruticosa L.)

Medicina ◽  
2011 ◽  
Vol 47 (3) ◽  
pp. 24 ◽  
Author(s):  
Vilma Jurkštienė ◽  
Alvydas Pavilonis ◽  
Daiva Garšvienė ◽  
Algirdas Juozulynas ◽  
Laimutė Samsonienė ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Candida Albicans ◽  
Klebsiella Pneumoniae ◽  
Bacillus Cereus ◽  
Potentilla Fruticosa ◽  
Rhaponticum Carthamoides

The aim of the study was to determine antimicrobial activity of rhaponticum and shrubby cinquefoil extracts. Material and Methods. Ethanol extract from the leaves of rhaponticum (Rhaponticum carthamoides D.C. Iljin) and shrubby cinquefoil (Potentilla fruticosa L.) was produced at the Department of Food Technology, Kaunas University of Technology. The antimicrobial activity of the viscous extract or rhaponticum and shrubby cinquefoil was evaluated using standard microorganism cultures (bacteria Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 33499, Pseudomonas aeruginosa ATCC 27853, Proteus mirabilis ATCC 12459, Bacillus subtilis ATCC 6633, Bacillus cereus ATCC 8035 and fungi Candida albicans ATCC 60193). The minimum inhibitory concentration (MIC) of the examined preparations was determined. Results. Both studied preparations – rhaponticum (Rhaponticum carthamoides D.C. Iljin) and shrubby cinquefoil (Potentilla fruticosa L.) – demonstrated similar antimicrobial activity. The highest sensitivity to the studied preparations was observed in microbes with eukaryotic cell structure: Candida albicans, which is a fungus, and a spore-forming prokaryotic bacterium, Bacillus cereus. The highest resistance was observed in Escherichia coli and Klebsiella pneumoniae. Conclusions. The studied preparations – viscous extracts of rhaponticum and shrubby cinquefoil – are substances with antimicrobial activity against gram-positive (Staphylococcus aureus and Enterococcus faecalis) and gram-negative (Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Proteus mirabilis) bacteria, spore-forming bacteria (Bacillus subtilis and Bacillus cereus), and fungi (Candida albicans).

scholarly journals Paralemnolins X and Y, New Antimicrobial Sesquiterpenoids from the Soft Coral Paralemnalia thyrsoide

Antibiotics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1158
Author(s):  
Abdelsamed I. Elshamy ◽  
Tarik A. Mohamed ◽  
Eman M. Elkady ◽  
Ibrahim A. Saleh ◽  
Ahmed A. El-Beih ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Spectroscopic Data ◽  
Soft Coral ◽  
2D Nmr ◽  
Organic Extracts

The organic extracts of the Red Sea soft coral Paralemnalia thyrsoides has led to the identification of two neolemnane-type sesquiterpenoids: paralemnolins X and Y (1, 2). In addition to these newly characterized compounds, ten known metabolites (3–12) were isolated. Previously reported compounds were elucidated by literature comparison of spectroscopic data (1D and 2D NMR as well as MS data). In vitro antimicrobial activity was investigated for compounds (1–12) against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus niger. Compound 5 showed antimicrobial activity against all assayed microorganisms.

scholarly journals Determination of antimicrobial activity of alcohol extractions of bark and buds of Quercus robur L.

2020 ◽  
Vol 20 (1-2) ◽  
pp. 152-157
Author(s):  
Nikolay A. Ryabov ◽  
Vladimir A. Kurkin ◽  
Vitaliy M. Ryzhov ◽  
Artem V. Lyamin ◽  
Alexander V. Zhestkov ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Quercus Robur ◽  
Antimicrobial Effect ◽  
Raw Material ◽  
Microbiological Analysis

Antimicrobial activity of alcoholic extractions from the aboveground organs like bark and buds of Quercus robur L. was studied. The determination of the minimum inhibitory concentration (MIC) was performed with the use of double serial dilution in broth. The following microorganisms were used as test cultures: Bacillus cereus, Candida albicans, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus. It has been revealed that alcoholic extractions of the bark of Quercus robur have the widest spectrum of antibacterial activity in relation to Pseudomonas aeruginosa, Escherichia coli and Candida albicans. Results of microbiological analysis show that alcoholic extractions from the bark and buds have an antimicrobial effect on all of these strains with a single dilution (except for antimicrobial activity against Staphylococcus aureus with 70% extractions of bark of Quercus robur). In particular, relatively high antimicrobial activity was observed in alcoholic extracts of all buds concentrations against Candida albicans at a dilution of 2, 4 and 8 times and Escherichia coli at a dilution of 4, 8 and 16 times. The greatest antimicrobial effect against Pseudomonas aeruginosa has extracts from the bark and buds in all the studied concentrations of alcohol. A significant antimicrobial effect against Escherichia coli has 40% of extractions from the buds of Quercus robur when diluted by 2, 4, 8, 16, 32 and 64 times. The results can be used as justification for the introduction of a new type of raw material that is buds of Quercus robur, as well as drugs based on it in the State Pharmacopoeia of the Russian Federation as antibacterial phytopharmaceuticals.

KHẢO SÁT HOẠT TÍNH KHÁNG VI SINH VẬT KIỂM ĐỊNH CỦA LOÀI KÉ HOA ĐÀO (URENA LOBATA L.)

2021 ◽  
Vol 7 (21) ◽  
pp. 183-189
Author(s):  
Thu Hương Trương Thị ◽  
Hoài Vân Trần Thị ◽  
Thùy Dương Trần Thị ◽  
Mai Chu Quỳnh ◽  
Nguyệt Nguyễn Thị
Keyword(s):  
Escherichia Coli ◽  
Saccharomyces Cerevisiae ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Ethyl Acetate ◽  
Fusarium Oxysporum

Các cặn chiết ethanol tổng, n-hexane, ethyl acetate và 2 hợp chất 5-hydroxy-6,7-dimetoxyflavanon và 3β-hydroxy-urs-12-en-28-oic phân lập được từ loài Ké hoa đào (Urena lobata) thể hiện hoạt tính kháng tốt đối với 2 chủng vi khuẩn Gram (–) (Escherichia coli và Pseudomonas aeruginosa), 2 chủng Gram (+) (Bacillus subtillis và Staphylococcus aureus), 02 chủng nấm sợi (Aspergillus niger và Fusarium oxysporum), 2 chủng nấm men (Candida albicans và Saccharomyces cerevisiae) với đường kính vòng kháng khuẩn từ 8 đến 28 mm.

Green Synthesis of Novel ethyl 3-amino-5-(methylthio)-4-(5-substituted phenyloxazol-2-yl)thiophene-2-carboxylate derivatives

2021 ◽  
pp. 105-110
Author(s):  
Satish M. Chavan
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Candida Albicans ◽  
Aspergillus Niger ◽  
Microwave Irradiation ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Green Protocol ◽  
Gram Positive Bacteria

Synthesis of novel ethyl 3-amino-5-(methylthio)-4-(5-substituted phenyloxazol-2-yl) thiophene-2-carboxylate derivatives from 3-amino-4-carbamoyl-5-(methylthio)thiophene-2-carboxylate was carried out by traditional as well as microwave irradiation green protocol. Ethyl 3-amino-5-(methylthio)-4-(5-substituted phenyloxazol-2-yl) thiophene-2-carboxylate derivatives were screened for antimicrobial screening against gram positive bacteria Staphylococcus aureus (ATCC 29737), gram negative bacteria Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Candida albicans (MTCC 277), Aspergillus niger (MCIM 545) fungi.

scholarly journals Antimicrobial effect of raw garlic (allium sativum L.) extracts, garlic powder and oil and commercial antibiotics on pathogen microorganisms

2004 ◽  
Vol 58 (3) ◽  
pp. 109-113 ◽  
Author(s):  
Vesna Nikolic ◽  
Mihajlo Stankovic ◽  
Ljubisa Nikolic ◽  
Dragan Cvetkovic ◽  
Dejan Skala
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Essential Oil ◽  
Antimicrobial Effect ◽  
Aqueous Extracts ◽  
Commercial Preparation ◽  
Garlic Powder

Garlic powder, essential oil and aqueous extracts from raw garlic and garlic powder prepared in accordance with the corresponding procedures were tested for antimicrobial activity on Staphylococcus aureus ATCC 6538, Escherichia coli ATCC 25922, Bacillus subtilis 6633, Sarcina lutea ATCC 4391, Pseudomonas aeruginosa ATCC 9027, Salmonella enteritidis, Klebsiel la pneumoniae, Proteus vulgaris, Candida albicans ATCC 10231 and Aspergillus niger ATCC 16404; and, three pathogen microorganisms isolated from human material were also used: Staphylococcus aureus, Escherichia coli and Candida albicans. The antimicrobial activities of the preparations were compared with that of commercial antibiotics and four commercial preparation based on garlic powder and essential oil. Aqueous extracts from raw garlic, from freshly prepared powder and powder stored for 18 months at +4?had the greatest antibacterial and antimycotic activities on all the microorganisms tested. The essential oil obtained by hydro distillation and commercial preparations based on garlic essential oil showed no antimicrobial activity on the microorganisms tested. Thermal oils showed a bacteriostatic or very weak bacteriostatic effect on all the microorganisms except Pseudomonas aeruginosa. The garlic powder and commercial preparations based on the powder have a strong antimicrobial effect on all the microbes except on Pseudomonas aeruginosa.

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