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Screening and molecular analyses for biosurfactant production by
... convenient properties. The main goal of the present study was to analyze Pseudomonas strains with high ability to produce biosurfactants during growth on n-hexadecane and Fluka-oil, and to evaluate the cell surface hydrophobicity. Biosurfactant production was screened by determining hemolysis on blo ...
... convenient properties. The main goal of the present study was to analyze Pseudomonas strains with high ability to produce biosurfactants during growth on n-hexadecane and Fluka-oil, and to evaluate the cell surface hydrophobicity. Biosurfactant production was screened by determining hemolysis on blo ...
Salinibacter ruber gen. nov., sp. nov., a novel, extremely halophilic
... Five brightly red-pigmented, motile, rod-shaped, extremely halophilic bacteria were isolated from saltern crystallizer ponds in Alicante (two strains) and Mallorca (three strains), Spain. They grew optimally at salt concentrations between 20 and 30 % and did not grow below 15 % salts. Thus, these is ...
... Five brightly red-pigmented, motile, rod-shaped, extremely halophilic bacteria were isolated from saltern crystallizer ponds in Alicante (two strains) and Mallorca (three strains), Spain. They grew optimally at salt concentrations between 20 and 30 % and did not grow below 15 % salts. Thus, these is ...
Division of Studies in English MICROBIOLOGY OUTLINE (1/4 MD
... preparation of pure cultures, the structure of the bacterial cell, staining methods of the bacterial slides. Knowledge: the student knows: - the microbiological media (liquid, semi-solid and solid, simple and enriched, selective, diagnostic and selectivediagnostic), - the techniques of the microbiol ...
... preparation of pure cultures, the structure of the bacterial cell, staining methods of the bacterial slides. Knowledge: the student knows: - the microbiological media (liquid, semi-solid and solid, simple and enriched, selective, diagnostic and selectivediagnostic), - the techniques of the microbiol ...
Lesson 7 Obligate anaerobes bacteria. Isolation of pure cultures of
... All the answers are wrong. 44. What is the essence of Fortner’s method? + Simultaneous cultivation of aerobic and anaerobic bacteria on the same medium. Cultivation of obligate anaerobes in a high column of agar. Cultivation of aerobes and obligate anaerobes in liquid medium under the layer of petro ...
... All the answers are wrong. 44. What is the essence of Fortner’s method? + Simultaneous cultivation of aerobic and anaerobic bacteria on the same medium. Cultivation of obligate anaerobes in a high column of agar. Cultivation of aerobes and obligate anaerobes in liquid medium under the layer of petro ...
The Gram
... a. He was originally looking for a stain for all bacteria to make them more easily visible in a microscope field; in the process of looking for a universal stain, he stumbled upon a difference between two distantly related groups of bacteria - those that retained the stain (Gram-positive) and those ...
... a. He was originally looking for a stain for all bacteria to make them more easily visible in a microscope field; in the process of looking for a universal stain, he stumbled upon a difference between two distantly related groups of bacteria - those that retained the stain (Gram-positive) and those ...
concerns about antibiotic resistance
... multiply and pass from cell to cell thereby spreading resistance within the whole microbial population. In some cases a plasmid can contain several genes each conferring resistance to different agents. Where one of these is a gene for resistance to a microbiocide, exposure to this microbiocide can l ...
... multiply and pass from cell to cell thereby spreading resistance within the whole microbial population. In some cases a plasmid can contain several genes each conferring resistance to different agents. Where one of these is a gene for resistance to a microbiocide, exposure to this microbiocide can l ...
Microbiology Focus 6.1 - The Role of - Sigma
... compound used against MRSA, may be of importance when treating serious infections by these bacteria, however, its activity against MRSA is only bacteriostatic. In these circumstances, the clinical potential of new drugs for treating MRSA infections is of major interest.1 Moreover, despite the fact t ...
... compound used against MRSA, may be of importance when treating serious infections by these bacteria, however, its activity against MRSA is only bacteriostatic. In these circumstances, the clinical potential of new drugs for treating MRSA infections is of major interest.1 Moreover, despite the fact t ...
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT)
... Pb, Sb, Se, and Zn, respectively, in each of the 5 plant sections (root to shoot) of Scirpus mucronatus for the 3 treatments. The control samples were used to assess the effects of bacteria 5 and bacteria 60 on the phytoremediation capacity of the Scirpus mucronatus. The concentrations of the all el ...
... Pb, Sb, Se, and Zn, respectively, in each of the 5 plant sections (root to shoot) of Scirpus mucronatus for the 3 treatments. The control samples were used to assess the effects of bacteria 5 and bacteria 60 on the phytoremediation capacity of the Scirpus mucronatus. The concentrations of the all el ...
Dadkhah and Najmabadi1
... extract inhibited the growth of E. coli but not Salmonella. Phenolic extracts of strawberry disintegrated the outer membrane of examined E. coli because of phenolic compounds in strawberry. Recent studies showed that phenolic compounds in strawberry was not effective on Salmonella Typhimurium bacter ...
... extract inhibited the growth of E. coli but not Salmonella. Phenolic extracts of strawberry disintegrated the outer membrane of examined E. coli because of phenolic compounds in strawberry. Recent studies showed that phenolic compounds in strawberry was not effective on Salmonella Typhimurium bacter ...
Division of Studies in English MICROBIOLOGY OUTLINE (1/4 MD
... preparation of pure cultures, the structure of the bacterial cell, staining methods of the bacterial slides. Knowledge: the student knows: - the microbiological media (liquid, semi-solid and solid, simple and enriched, selective, diagnostic and selectivediagnostic), - the techniques of the microbiol ...
... preparation of pure cultures, the structure of the bacterial cell, staining methods of the bacterial slides. Knowledge: the student knows: - the microbiological media (liquid, semi-solid and solid, simple and enriched, selective, diagnostic and selectivediagnostic), - the techniques of the microbiol ...
Chapter 8 The Genetics of Bacteria and Their Viruses
... In transduction, a bacteriophage transfers DNA from a donor cell to a recipient cell. In generalized transduction, a random fragment of bacterial DNA is packaged in the page head in place of the phage DNA (normal Excision). In specialized transduction, recombination between the phage chromosom ...
... In transduction, a bacteriophage transfers DNA from a donor cell to a recipient cell. In generalized transduction, a random fragment of bacterial DNA is packaged in the page head in place of the phage DNA (normal Excision). In specialized transduction, recombination between the phage chromosom ...
General Microbiology
... loop to pick up a loop-full of nigrosin. Carefully mix it in with the drop of cells, without spreading the drop too much. Hold the right end of the slide in your right-hand; with your left– hand take another slide at a 45 or less angle to the first slide Scoot the angled slide back along the sur ...
... loop to pick up a loop-full of nigrosin. Carefully mix it in with the drop of cells, without spreading the drop too much. Hold the right end of the slide in your right-hand; with your left– hand take another slide at a 45 or less angle to the first slide Scoot the angled slide back along the sur ...
Microbiology – Chapter 1
... • Living organisms are assigned to groups based upon their similarities. ...
... • Living organisms are assigned to groups based upon their similarities. ...
Powdered versus liquid bacterial preparations
... seemingly identical functions are involved in various cellular processes. Three SPase proved essential for the viability of B. subtilis cells. Surprisingly one of the non-essential SPase showed a large similarity with enzymes occuring in higher organisms including humans. This is why in the future t ...
... seemingly identical functions are involved in various cellular processes. Three SPase proved essential for the viability of B. subtilis cells. Surprisingly one of the non-essential SPase showed a large similarity with enzymes occuring in higher organisms including humans. This is why in the future t ...
Fluorescence in situ hybridization (FISH) for direct
... It has been established that bacteria play the major role in the aetiology of apical periodontitis (Kakehashi et al., 1965; Sundqvist 1976). In most instances endodontic infections respond well to local antimicrobial therapy of the root canal. When the root canal is properly instrumented, disinfecte ...
... It has been established that bacteria play the major role in the aetiology of apical periodontitis (Kakehashi et al., 1965; Sundqvist 1976). In most instances endodontic infections respond well to local antimicrobial therapy of the root canal. When the root canal is properly instrumented, disinfecte ...
Institute for Microbiology, Medical Faculty of Masaryk
... • ETEC (enterotoxic E. coli): children in developing countries, traveller´s diarrhea; 2 enterotoxins (heat-labile and heatstable) • EPEC (enteropathogenic E. coli): O55, O111; small infants; disruption of microvillus structure • EIEC (enteroinvasive E. coli): similar to shigellae → dysentery-like di ...
... • ETEC (enterotoxic E. coli): children in developing countries, traveller´s diarrhea; 2 enterotoxins (heat-labile and heatstable) • EPEC (enteropathogenic E. coli): O55, O111; small infants; disruption of microvillus structure • EIEC (enteroinvasive E. coli): similar to shigellae → dysentery-like di ...
Antibody Selection for Immobilizing Living Bacteria
... Postimmunization (4 weeks), the rabbit was bled to check serum anti-CFA/I titers using enzyme-linked immunosorbent assay (ELISA). The serum was further purified using a protein G column to remove the nonimmunoglobulin serum protein. The polyclonal anti-F1 was prepared similarly. Monoclonal antibody ...
... Postimmunization (4 weeks), the rabbit was bled to check serum anti-CFA/I titers using enzyme-linked immunosorbent assay (ELISA). The serum was further purified using a protein G column to remove the nonimmunoglobulin serum protein. The polyclonal anti-F1 was prepared similarly. Monoclonal antibody ...
... neutral pH of 6–7 alleviates this energy drain. The greater availability of energy will also facilitate the fixation of N2 which would help support growth of the microbial population. The lower pH values should also help solubilise phosphate for growth. Overall CO2 injection should increase the avai ...
19-1 Bacteria
... Eubacteria include organisms that live in a variety of environments, including: ...
... Eubacteria include organisms that live in a variety of environments, including: ...
Microbial Ecology
... Azospirillum brasilense [21]. Oligonucleotide probes were synthesized with a C6-TFA aminolinker [6-(trifluoroacetyl-amino)-hexyl(2-cyanoethyl)-(N,N-diisopropyl)-phosphoramidite] at the 58 end (MWG Biotech, Ebersberg, Germany). They were labeled with tetramethylrhodamine-5-isothiocyanate (TRITC) (Mol ...
... Azospirillum brasilense [21]. Oligonucleotide probes were synthesized with a C6-TFA aminolinker [6-(trifluoroacetyl-amino)-hexyl(2-cyanoethyl)-(N,N-diisopropyl)-phosphoramidite] at the 58 end (MWG Biotech, Ebersberg, Germany). They were labeled with tetramethylrhodamine-5-isothiocyanate (TRITC) (Mol ...
StudyGuideforBI234Exam2
... why some organisms can tolerate toxic forms of oxygen while others cannot. 3. Discuss the relationship between nitrogen in the atmosphere (N2), usable nitrogen (NH3), and nitrogen fixing bacteria 4. Know what nitrogen is used for by organisms 5. Understand how trace elements and growth factors can b ...
... why some organisms can tolerate toxic forms of oxygen while others cannot. 3. Discuss the relationship between nitrogen in the atmosphere (N2), usable nitrogen (NH3), and nitrogen fixing bacteria 4. Know what nitrogen is used for by organisms 5. Understand how trace elements and growth factors can b ...
Increased Bone Attachment to Silicon Nitride (Si3N4) Materials
... even at these short time periods. For inoculated implants, histology could only be performed at 14 and 90 days respectively. PEEK or Ti implants showed no or minimal osteointegration regardless of the implantation times. For Si3N4, significantly greater new bone formation occurred in calvarial defec ...
... even at these short time periods. For inoculated implants, histology could only be performed at 14 and 90 days respectively. PEEK or Ti implants showed no or minimal osteointegration regardless of the implantation times. For Si3N4, significantly greater new bone formation occurred in calvarial defec ...
Beta-Lactam Antibiotics - Southern Methodist University
... Cephalosporins- Classification Cephalosporins are classified into four generations based on their activity. Later generations generally become more effective against Gram (-) bacteria due to an increasing number of polar groups (also become zwitterions.) Ceftazidime (3rd gen) in particular can cros ...
... Cephalosporins- Classification Cephalosporins are classified into four generations based on their activity. Later generations generally become more effective against Gram (-) bacteria due to an increasing number of polar groups (also become zwitterions.) Ceftazidime (3rd gen) in particular can cros ...
Inexpensive and fast pathogenic bacteria screening using field
... In the case of our BioFET, as in Figure 1, when the potential applied across the gate and the source (Vgs) is larger than the threshold voltage (Vth) of the device (Vgs>Vth), a conducting channel is formed between the source and the drain. Additionally, if a voltage is applied between the drain to s ...
... In the case of our BioFET, as in Figure 1, when the potential applied across the gate and the source (Vgs) is larger than the threshold voltage (Vth) of the device (Vgs>Vth), a conducting channel is formed between the source and the drain. Additionally, if a voltage is applied between the drain to s ...
Biofilm
![](https://commons.wikimedia.org/wiki/Special:FilePath/Staphylococcus_aureus_biofilm_01.jpg?width=300)
A biofilm is any group of microorganisms in which cells stick to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm extracellular polymeric substance, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics. When a cell switches to the biofilm mode of growth, it undergoes a phenotypic shift in behavior in which large suites of genes are differentially regulated.