using DMSO (50% in water) as negative control by well diffusion method‚ against Bacillus subtilis‚ Staphylococcus aureus (gram positive)‚ Escherichia coli (gram negative) and Candida (yeast). Each well in the agar plate was seeded by (100 µL) from each tested compound or (50% DMSO). The plates were incubated at 37°C for 24 hours. the inhibition zone around each well in mm were measured‚ table 3. strain 3b 3d 3e Bacillus subtilis 2 4.3 3.3 Staphylococcus aureus - 3.67 3.67 Escherichia coli - - - Candida
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Russel Roberson‚ Franc¸ois Elvinger. 2001 “Use of eosin methylene blue agar to differentiate Escherichia coli from othergram-negative mastitis pathogens”. J Vet Diagn Invest 13:273–275 3. Hiroshi Fujikawa‚ 1994. “Diversity of the growth patterns of Bacillus subtilis colonies on agar plates”. FEMS Microbiology Ecology 13: 159-167 4. Anna Csillag‚ 1972. “Appearance of acid-fast rods in cultures of mycococcus luteus”. Tubercle and Lung Disease 53: 221-225 5. James A. Bastock‚ Michelle Webb and Jane A.
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correlation between the presence or absence of fimbriae and the toxigenic status of the organism. C. Difficile moves via peritrichous flagella. These flagella are evenly spread around the surface of each cell and which allows the bacillus to be highly motile. The bacillus are able to move by a tumbling motion and by movement in a forward direction. Nine toxigenic and six non-toxigenic strains of Clostridium Difficile‚ of varying virulence in a study of antibiotic-associated colitis‚ were examined
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T. Kolusheva‚ A. Marinova Journal of the University of Chemical Technology and Metallurgy‚ 42‚ 1‚ 2007‚ 93-96 A STUDY OF THE OPTIMAL CONDITIONS FOR STARCH HYDROLYSIS THROUGH THERMOSTABLE α - AMYLASE T. Kolusheva‚ A. Marinova University of Chemical Technology and Metallurgy 8 Kl. Ohridski‚ 1756 Sofia‚ Bulgaria E-mail: e-mail: manahova@abv.bg. Received 10 July 2006 Accepted 12 November 2006 ABSTRACT The present work determines the optimal conditions for starch hydrolysis by thermostable
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bodies require (these include some B vitamins for metabolism and vitamin k for blood clotting). 5. Microorganisms are used to produce antibiotics that kill or inhibit other microbes; molds such as Penicillium and bacteria such as Streptomyces and Bacillus are used to make antibiotics. 6. Vaccines are substances derived from microorganisms and are used to immunize against disease. The microbes that are the cause of infectious disease are usually the ultimate source of vaccines. 7. Microbes help to
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crystal violet stain. Gram-negative cells have a thinner cell wall through which the alcohol readily penetrates. The crystal violet is removed from these cell walls that are then stained with the safranin counterstain. Staphylococcus aureus‚ and Bacillus subtillis are Gram-positive and stain blue. E. coli is Gram-negative and stain pink. Conclusion Differential stains are more complex than simple ones and use more than one stain to differentiate cellular components. They are used to examine
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Journal of Thermal Analysis and Calorimetry‚ Vol. 94 (2008) 1‚ 75–81 FUNGICIDAL AND BACTERICIDAL ACTIVITY OF METAL DIETHYLDITHIOCARBAMATE FUNGICIDES Synthesis and characterization H. S. Rathore1‚ K. Ishratullah2‚ C. Varshney1‚ G. Varshney1 and S. C. Mojumdar3‚4* 1 2 Department of Applied Chemistry‚ Z. H. College of Engineering and Technology‚ Aligarh Muslim University‚ Aligarh 202002 India Indian Institute of Chemical Technology‚ Uppal Road‚ Hyderabad 500007‚ India 3 Department of Chemical
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Chapter 1. Microbiology – Diversity of Organisms Microorganisms- too small to be seen with the unaided eye “germ”- rapidly growing cell Microbes in our lives Pathogenic- disease causing Decompose organic waste Producers in ecosystem (photosynthesis) Produce industrial chemicals such as ethanol and acetone Produce fermented foods ( vinegar‚ cheese‚ bread) Produce products used in manufacturing (cellulose) and treatment (insulin) Designer Jeans: Made by Microbes? Stone washing- Tricoderma
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The decay bacteria decompose the proieinous compounds into amino acids‚ which are reduced to ammonia by ammonifying bacteria. The free ammonia combines in the soil to form ammonium salts. This conversion is known as ammonification. Examples are Bacillus ramosus‚ B.
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Microbiology: ‘The Correct handling of Micro-organisms’ 1. Devise a title for each of the two experiments you did : (i)‚ Experiment 1 demonstrated the growth of bacteria when placed in liquid nutrient broth culture‚ the number of species present had increased in growth. .(1) (ii) Experiment 2 illustrated the growth of bacteria when placed on different surfaces of solid agar plates which included: nutrient agar‚ CLED agar and MacConkey agar; the number of species present also had increased in growth
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