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External Bacterial Flora and Antimicrobial Susceptibility Patterns of Staphylococcus spp. and Pseudomonas spp. Isolated from Two Household Cockroaches, Blattella germanica and Blatta orientalis 被引量:4
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作者 MENASRIA Taha TINE Samir +4 位作者 MAHCENE Djaouida BENAMMAR Leyla MEGRI Rochdi BOUKOUCHA Mourad DEBABZA Manel 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2015年第4期316-320,共5页
A study was performed to estimate the prevalence of the external bacterial flora of two domestic cockroaches (Blattella germanica and Blatta orientalis) collected from households in Tebessa (northeast AIgeria).Thr... A study was performed to estimate the prevalence of the external bacterial flora of two domestic cockroaches (Blattella germanica and Blatta orientalis) collected from households in Tebessa (northeast AIgeria).Three major bacterial groups were cultured (total aerobic, enterobacteria, and staphylococci) from 14 specimens of cockroaches, and antibiotic susceptibility was tested for both Staphylococcus and Pseudomonas isolates. Culturing showed that the total bacterial load of cockroaches from different households were comparable (P〈0.001) and enterobacteria were the predominant colonizers of the insect surface, with a bacterial load of (2.1×10^5 CFU/insect), whereas the staphylococci group was the minority. Twenty-eight bacterial species were isolated, and susceptibility patterns showed that most of the staphylococci isolates were highly susceptible to chloramphenicol, gentamycin, pristinamycin, ofloxacin, clindamycin, and vancomycin; however, Pseudomonas strains exhibited resistance to amoxicillin/clavulanic acid, imipenem, and the second-generation antibiotic cephalosporin cefuroxime. 展开更多
关键词 External Bacterial Flora and Antimicrobial Susceptibility Patterns of Staphylococcus spp Isolated from Two Household Cockroaches and pseudomonas spp
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Phenotypic and Genotypic Characterization of Extended Spectrum β-Lactamase Klebsiella pneumoniae and Fluorescent Pseudomonas spp. Strains from Market Garden Products and Their Watering Water in Benin (West Africa)
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作者 Wassiyath Moussé Pacôme A. Noumavo +4 位作者 Nicodème W. Chabi Haziz Sina Majoie G. Tohoyessou Théodora A. Ahoyo Lamine Baba-Moussa 《Food and Nutrition Sciences》 2016年第3期192-204,共13页
Market garden products can carry several types of microorganisms, and their consumption is the source of many cases of food poisoning. This work aimed to improve food safety in Benin. In characterizing strains of K. p... Market garden products can carry several types of microorganisms, and their consumption is the source of many cases of food poisoning. This work aimed to improve food safety in Benin. In characterizing strains of K. pneumoniae and fluorescent Pseudomonas spp. at the biochemical and molecular level, the target was to identify contaminated watering water and garden products sold during Cotonou in both the dry and rainy seasons. A total of 164 samples of market garden products and 22 samples of watering water were investigated. The results showed that 5.91% of market garden products and watering water were contaminated by K. pneumoniae and 20.43% by fluorescent Pseudomonas spp. During the dry season, cabbage was most contaminated by fluorescent Pseudomonas spp. (50%). Pool water was more contaminated with K. pneumoniae (17%). All isolated strains were resistant to both amoxicillin and penicillin. All strains of K. pneumoniae and fluorescent Pseudomonas spp. were not resistant to imipenem, and 22% of them produced penicillinase. Among the 49 strains producing penicillinase isolated, 64.29% and 21.43% carried bla<sub>TEM</sub> and bla<sub>SHV</sub> respectively while 14.28% carried bla<sub>CTX-M</sub> genes. In light of the previously-developed results and considering the importance of horticultural products in Beninese food habits, we must improve national awareness of the risk for foodborne illness. 展开更多
关键词 Vegetables Klebsiella pneumoniae Fluorescent pseudomonas spp. Β-LACTAMASES Food Safety
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Evaluation of plant growth promoting potential of four rhizobacterial species for indigenous system
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作者 Mokone Peter Hou Babalola Olubukola Oluranti 《Journal of Central South University》 SCIE EI CAS 2013年第1期164-171,共8页
The aim of this work was to see whether Pseudomonas putida NWU12, Pseudomonas fluorescence NWU65, Vibrio fluvialis NWU37 and Ewingella americana NWU59 are beneficial to plants and are able to promote plant growth and ... The aim of this work was to see whether Pseudomonas putida NWU12, Pseudomonas fluorescence NWU65, Vibrio fluvialis NWU37 and Ewingella americana NWU59 are beneficial to plants and are able to promote plant growth and development when inoculated as plant growth-promoting rhizobacteria (PGPR). The four rhizobacteria were tested in vitro for PGPR activities and on spinach and pepper in pot experiments. The inoculants are all positive for ammonia (NH3 ), catalase, hydrogen cyanide (HCN), phosphate solubilization and siderophore production. Among the inoculants, E. americana NWU59 is oxidase negative. P. putida NWU12 and P. fluorescence NWU65 are producing indole-3-acetic acid (IAA). The inoculants exhibit some PGPR activities and thus tested in the screen-house. Treatments are control (water) and the four inoculants. Rhizobacterial inoculants increase spinach (17.14%-21.43%) and pepper (15.0%-37.5%) plant heights over the control. Such inoculants have the potential of improving plant yield components and may be used as biofertilizer. 展开更多
关键词 Ewingella americana microbial inoculants PGPR pseudomonas spp SCREENING Vibrio fluvialis
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Risk of Getting Nosocomial Water-Borne Infections from the Main Water Systems in Hospitals
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作者 Leif Percival Andersen Marlene Hog Jakob Joensen 《Journal of Life Sciences》 2017年第1期1-10,共10页
Drinking water may be a risk factor for human infections if the water supply is contaminated with biofilm producing bacteria such as Legionella pneumophilae or Pseudomonas aeruginosa. Several situations have to be con... Drinking water may be a risk factor for human infections if the water supply is contaminated with biofilm producing bacteria such as Legionella pneumophilae or Pseudomonas aeruginosa. Several situations have to be considered when water supply to new buildings is planned. The aim of this paper is to review situations that have to be considered in new buildings and give an example on a new water supply contaminated with biofilm producing water bacteria and the precautions introduced to eliminate the contamination. When new buildings are planned it should be considered where to get the water and what is the microbiological quality of the water. If the water is contaminated there will be troubles from the beginning. The material for the pipes should be considered as biofilm which is produced in greater amounts and faster in PEG pipes than in stainless steel pipes. The choice of material depends on the expected lifetime of the building, the dimensions of the pipes, and the choice of forceps, how often the taps are used and thereby the flow in the system. The higher flow the less and slower biofilm formation. It is important to reduce the number of taps to a minimum to ovoid "dead ends" if they are not or only seldom used. Alternatively all taps could be opened automatically regularly. It is important to establish precautions to ovoid contamination of the water system in the period from when it is established until the building is taken in use. The period can be several months during which the system can act as a "dead end" if no precautions, such as regularly opening of all taps, are taken. The microbiological quality of the water in the system should be controlled before the building is taken in use. In a new building, where the water supply and the water in the building was not controlled before the building was taken in use, extremely high total and Legionella germ counts were found. The water was disinfected with low concentrations of chloride with very little effect. After disinfection with high concentrations of chloride for few hours and placing a sterile filter at the water entrance both the total and Legionella germ count decreased to an acceptable level. 展开更多
关键词 Water supply nosocomial infections water contamination Legionella spp. pseudomonas spp.
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Risk of Getting Nosocomial Water-borne Infections from the Main Water Systems in Hospitals
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作者 Leif Percival Andersen Marlene Hog Jakob Joensen 《Journal of Life Sciences》 2016年第8期411-419,共9页
Summary: Drinking water may be a risk factor for human infections if the water supply is contaminated with biofilm producing bacteria such as Legionella pneumophilae or Pseudomonas aeruginosa. Several situations have... Summary: Drinking water may be a risk factor for human infections if the water supply is contaminated with biofilm producing bacteria such as Legionella pneumophilae or Pseudomonas aeruginosa. Several situations have to be considered when water supply to new buildings is planned. The aim of this paper is to review situations that have to be considered in new buildings and give an example on a new water supply contaminated with biofilm producing water bacteria and the precautions introduced to eliminate the contamination. When new buildings are planned, it should be considered where to get the water and what is the microbiological quality of the water. If the water is contaminated there will be troubles from the beginning. The material for the pipes should be considered as biofilm is produced in greater amounts and faster in PEG pipes than in stainless steel pipes. The choice of material depend on the expected lifetime of the building, the dimensions of the pipes, and the choice of forceps, how often the taps are used and thereby the flow in the system. The higher flow the less and slower biofilm formation. It is important to reduce the number of taps to a minimum to ovoid "dead ends" if they are not or only seldom used. Alternatively all taps could be opened automatically regularly. It is important to establish precautions to ovoid contamination of the water system in the period from it are established until the building is taken in use. The period can be several month where the system can act as a "dead end" if no precautions, such as regularly opening of all taps, are taken. The microbiological quality of the water in the system should be controlled before the building is taken in use. In a new building, where the water supply and the water in the building was not controlled before the building was taken in use, extremely high total and Legionella germ counts were found. The water was disinfected with low concentrations of chloride with very little effect. After disinfection with high concentrations of chloride for few hours and placing a sterile filter at the water entrance both the total and Legionella germ count decreased to an acceptable level. 展开更多
关键词 Water supply nosocomial infections water contamination Legionella spp pseudomonas spp.
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