HYDRO-ECOSPHERE Hydro-ecosphere is considered as a more suitable habitat for microorganisms than the atmosphere and lithosphere‚ mainly because hydrosphere contains water‚ which is important in microbial metabolism (Atlas and Bartha‚ 1993). The unique properties of water are also attributes of hydrosphere as a suitable habitat. Due to polarity of water (slightly negative and slightly positive)‚ water is considered as a great solvent‚ capable of forming hydrogen bonding. Large heat
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α hemolysis and a negative result for production of catalase. The cocci wereidentified by using the BD Phoneix-100 system (Becton Dickinson‚ New Jersey‚ USA) as Alloiococcus otitis‚ by using VITEK 2-compact system (bioMérieux‚ Lyons‚ France)as Micrococcus Kristinae‚ and by using matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (Bruker‚ Leipzig‚ Germany) as “not reliable identification”.Sequencing the 16S rDNA PCR product obtained from the isolate yielded 1406/1419
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establishing its antimicrobial activity (Ijeh and Ejike‚ 2011). Study by Kambizi and Afolayan (2001) showed that acetone and methanol extracts (root) of the plant possess antibacterial activity towards Bacillus cereus‚ B. pumilus‚ B. subtilis‚ Micrococcus kristinae‚ Staphylococcus aureus‚ Enterobacter cloacae and E. coli growth with MIC ranging from 0.5 – 5 (mg/ml) with the acetone extract showing higher activity. Chromatographic separation of the leaf ethanol extract by Erasto et al. (2006) yielded
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in military treatment facilities during the Iraq War. How was this bacteria discovered? The history of the genus Acinetobacter dates back to the early 20th century‚ in 1911‚ when Beijerinck‚ a Dutch microbiologist‚ described an organism named Micrococcus calco-aceticus that was isolated from soil by enrichment in a calcium-acetate-containing minimal medium (Camp 2010). Acinetobacter began to be recognized as a significant hospital pathogen in the late 1970s‚ but at that time it was easily treated
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2.1 Sanitation Methods There are Four Methods that conducted on the laboratories in order to detect the presence of microorganisms. There are Rodac Method‚ Swab Method‚ Rinse Method‚ and lastly Open Dish Method and it will be discussed in detail below. 2.1.1 Rodac Method The purpose of this Standard Operating Procedure is to describe a program that will adequately measure the efficacy of disinfection of Rooms and equipment in each laboratory‚ RODAC plates can detect the presence or absence of
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2008). Also‚ cinnamaldehyde has been proven to inhibit microbial growth of opportunistic human pathogenic fungi‚ such as Aspergillus niger‚ Candida albicans and Rhizopus oligosporus‚ and various bacteria (Escherichia coli‚ Enterobacter cloacae‚ Micrococcus luteus‚ Staphylococcus aureus‚ Streptococcus faecalis‚ and others) (Khan and Abourashed‚ 2011). Several studies have also unraveled the hypoglycemic (insulin-like) and hypolipidemic properties of cinnamaldehyde since it can cause: elevated glucose
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ASEPTIC TECHNIQUES AND CELL COUNTING INTRODUCTION:- Microbes are single celled organisms and are so small that we cannot see with our naked eyes‚ microbes can only seen under microscopes .Microbes are the one of the oldest living form on earth‚ fossils of microbes were found which are said to be 3.5 billion years old . Microbe world: what is a microbe [online].[Accessed 9 April 2013].Available from: world wide web:‚microbes are found everywhere in rocks‚air‚water some of the microbes are even
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care is health risks. Day care centers are a breeding ground for germs and bacteria. Such bacterium includes‚ Streptococcus pneumonia (strep Throat)‚ Escherichia coli (E coli)‚ Bacillus (food poisoning)‚ Klebsiella (respiratory tract infection) Micrococcus (septic arthritis)‚ Pseudomonas (bacteraemia) and Brevibacterium (meningitis). The list goes on with Pantoea (cellulitis)‚ Acinetobacter (osteomyelitis)‚ Bacillus (the agent of anthrax)‚ Nocardiopsis (pulmonary infections)‚ Brevibacillus (chest
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CHAPTER I INTRODUCTION 1.1 Background Food is one of human sources of calorie‚ protein‚ fats‚ and nutrition. Yet‚ because of the highly nutritious content‚ food is susceptible to growth of microorganisms. By the presence of microorganisms in food‚ the food is more likely to have shorter shelf life. Thus‚ mostly it is resolved by the addition of antimicrobial substances to food‚ such as condiments and preservatives. Condiments and preservatives could inhibit the growth of microorganisms
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Review all chapters in your exercise manual beginning with the introduction INTRODUCTION: (Covered 9.4.14 II Week 1) Biosafety levels1: basic level of containment. Hand washing or wearing gloves 2: Appropriate for working with human body fluids. Autoclave‚ sharps containers‚ lab coats 3: appropriate for working with pathogens that can be transmitted via respiratory route. Self-closing‚ double doors and sealed windows 4: Highest level. Aerosol pathogens; pathogens with no vaccine/treatment. Separate
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