CHAPTER 4 Uses Harmonic Mean Sample Size = 3.000 Values are mean±±SD of three independent determinations. As discussed earlier‚ the extraction of the turmeric powder was done using various solvents at different temperatures. Different solvents provided extracts with different colour values at varying temperatures. At 50⁰C‚ the maximum colour value was found to be in the extract obtained using ethanol as the solvent. As shown in Figure 4.5
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Morales‚ Marinel M. Dr. Annie Cu Gallardo BSE-Biological Sciences III-3 Microbiology (Lecture) Microbiology Written Report REPORT NO. 1 Prokaryotes: Bacteria Most of us have been conditioned to think of bacteria as invisible‚ potentially harmful little creatures. Actually‚ relatively few species of bacteria cause disease in humans‚ animals‚ plants‚ or any other organisms. In fact‚ all organisms made up of eukaryotic cells probably evolved from bacteria-like organisms‚ which were some
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Staphylococcus Aureus is a common cause for infections in the community and a major cause in hospital based disease. Up to 40% of the general public thought to be carriers and of hospital staff from 50 – 70%‚ and is associated with a higher risk of infection in the hospital setting. The anterior nares have been shown to be the most frequent site of carriage and are the single site of detection. [1] In certain situations‚ hospital patients and staff may be investigated and screened to identify carriers
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marcescens b) Bacillus subtilis and Escherichia coli c) Streptococcus fecalis and Pseudomonas fluoroscens 2. 24 hour pour plate preparation of a) Serratia marcescens b) Sarcina lutea c) Bacillus subtilis d) Escherichia coli 3. 24 hour agar slant of the following cultures incubated at 25ºC a) Bacillus subtilis b) Escherichia coli c) Serratia marcescens d) Pseudomonas fluoroscens 4. 48 hour nutrient broth cultures of the following cultures incubated at 25ºC
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locates generally inside the specialized nodular structures of root cells. The bacterial genera such as Agrobacterium‚ Arthrobacter‚ Azotobacter‚ Azospirillum‚ ‚ Bacillus‚Burkholderia‚Caulobacter‚Chromobacterium‚Erwinia‚Flavobacterium‚Micrococcous‚Pseudomonas and Serrata belongs to ePGPR.The iPGPR belongs to the family of Rhizobiaceae includes Allorhizobium‚Bradyrhizobium‚Mesorhizobium and Rhizobium.Plant growth promoting rhizobacteria promote plant growth either directly or indirectly. In direct method
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Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates‚ it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected‚ the organism must be isolated in pure culture then once reinnoculated in a healthy host‚ must cause the
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INFECTION CONTROL Pathogen- Infectious agent Colonization- If microorganism is present or invades host‚ grows and/or multiplies but does not cause infection. Communicable disease- if infectious disease can be transmitted from one person to another. -Symptomatic-if pathogens multiply and cause clinical signs/symptoms. -Asymptomatic- if no s/s are present *CHAIN OF INFECTION: 1. An infectious agent or pathogen 2. A reservoir or source for pathogen growth 3. A portal of exit from the
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Horack’s article “Staphylococcus epidermidis”‚ S. epidermidis is described as “gram-positive cocci bacteria that are part of the normal flora on the skin and nasal passages.” The article goes on to say that the species was originally named Staphylococcus Albus by microbiologist Rosenback in 1884. When viewed under a microscope S. epidermidis will appear in chains‚ pairs‚ or grape-like clusters (Horak 1). Taxonomically‚ the species S. epidermidis falls in the genus Staphylococcus‚ which is in the
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The Antibiotic Action of Acacia Leaves and Barks Extract as Skin Ointment against Staphylococcus Aureus Proponents: Khrisnelle C. Mendoza Ferry Rose C. Paulo Veronica Luisa T. Porwelos Hershey Joy A. Rivera Laurence Lee F. Relao Isiah Zyrus D. Siega A Scientific Research presented to the Science Department Constancio Padilla National High School Division of San Jose City Nueva Ecija in partial fulfillment of the requirements for the subject RESEARCH II March 2013 INTRODUCTION
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Alcaligenes Clostridium Proteus vulgaris Pseudomonas fluorescens Cured meat Mouldy Aspergillus Rhizopus Penicillium Souring Pseudomonas Micrococcus Greening‚ slime Lactobacillus Leuconostoc Fish Discoloration Pseudomonas Putrefaction Alcaligenes Flavobacterium Eggs Green rot P. fluorescens Colorless rots Pseudomonas Alcaligenes Black rots Proteus Concentrated orange juice "Off" flavor Lactobacillus Leuconostoc Acetobacter Poultry Slime‚ odor Pseudomonas Alcaligenes http://home.pacific.net
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