Disposition/Food Safety: Overview of Food Microbiology July 8‚ 2011 Overview of Food Microbiology OBJECTIVES At the end of this module‚ you will be able to: 1. Explain the structural similarities and/or differences among Gram-positive and Gram-negative bacteria as well as their isolation and identification using serological‚ biochemical‚ and molecular techniques. 2. Identify the functions of the bacterial cell wall. 3. Identify the extrinsic and intrinsic parameters that affect bacterial growth
Premium Bacteria Microbiology Foodborne illness
Abstract The primary focus of this lab was on microscopy and simple stains. Crystal violet and Carbol fuchsine‚ simple staining components‚ were used to stain the slide in order to see the different microbes in order to determine their cellular shape and identify unknown ones by comparing. Introduction Bacterial cells are usually colorless because cytoplasm‚ for the most part‚ is transparent. Since the bacteria are colorless‚ it is almost essential to add a stain to make the bacteria more visible
Premium Bacteria Electric charge
Access HP&S Biological Concepts Microorganisms and Biotechnology Use of Aseptic Technique Introduction Microorganisms (microbes) such as prokaryotes are the oldest life form that we know. Various forms have been discovered‚ not only to survive‚ but to thrive in the most hostile and extreme of environments and have been named extremophiles and various types of microbes are found in every niche of ecology. Due to their resilience and success at sustaining their existence‚ it has proven to
Premium Bacteria
Chapter-8 Cell: The Unit Of Life What is a cell? Cell is the basic or fundamental structural and functional unit of an organism. What is cell biology? The branch of biology that deals with the study of cell structure and function is called cell biology. DISCOVERIES; Who discovered cell? Robert Hooke observed a live cell in 1665. He observed the cell(actually the cell walls) in the slice of cork under his compound microscope ‚coined the term cell‚ recorded his observations in micrographic
Free Cell Eukaryote
ASHOKA (SARACA ASOCA) Classification[4] Kingdom Divison Class Order Family Genus Species Plantae Magnoliophyta Mgnoliopsida Fabales Caesalpinaceae Saraca Asoca DEVSTHALI VIDYAPEETH COLLEGE OF PHARMACY CONTANTS Introduction………………………………………………………………01 Synonyms……………………………………………………………………01 Biological source…………………………………………………….01 Geographical source…………………………………………….01 Cultivation and collection………………………………..02 Macroscopic Characters…………………………………….03 Botanic description……………………………………………
Premium Phloem Xylem
Anthrax-Bacillus anthracis Anthrax is caused by the bacterium called Bacillus anthracis which is a spore forming‚ rod shaped bacterium. Central spores develop under all growth conditions except the living body of the host. It is classified as Bacilli. The most common form would be the cutaneous form. however as we saw during the 2011‚ terrorist attacks‚ the pulmonary form is very real and a serious threat to life. It affects the lungs and the GI tract. The last form is the
Premium Bacillus Microbiology Antibiotic
Observing Bacteria Kelli Jo Simco Microbiology Due: 2/8/13 Abstract: Microscopes are fragile instruments that must be handle with extreme caution as they can produce high quality results when observing the smallest specimens on earth. A microscope must be properly cleaned before use and storage. The different objectives allow for a range of observations. At the highest objectives‚ the resolution can easily be lost which is why the oil immersion lens is used to minimize refraction. While
Premium Bacteria
In case the cell line has to be stored it should be at -80 C or below. Te cell lines that should be used for the test should be free from mycoplasma before use the stock culture should be tested for the absence of mycoplasma. The pH of the culture medium should be maintained in the range of 7.2-7.4. The qualitative and quantitative assessment of cytotoxicity has to be tested. The test should be performed on a sub-confluent mono
Premium Medicine Health care Patient
Objectives: • To measure the different phases of growth of Escherichia coli through absorbance reading and viable count measurements • To plot the growth curve of Escherichia coli Methodology: [pic] [pic] [pic] Results and Discussion: In the experiment‚ the different growth phases were observed through the analysis of the absorbance of broth with inoculated organism (E.coli). There was no
Premium Bacteria Escherichia coli Bacterial growth
crystal violet dye (which also inhibits certain Gram-positive bacteria)‚ neutral red dye (which stains microbes fermenting lactose)‚ lactose and peptone. QUALITY CONTROL Results after 24 hrs at 35º C Organisms ATCC Growth Colour Escherichia coli 25922 + red Proteus mirabilis 12453 + colourless Salmonella typhimurium 14028 + colourless Streptococcus faecalis 29212 - or partial Uses Acting as a visual ph indicator‚ the agar distinguishes
Premium Microbiology Bacteria Escherichia coli