The tests used to confirm the fermentation were a gas production test‚ pH test‚ Gram stain‚ and turbidity test. The results showed during the conversion of milk to Kefir there was gas produced‚ a decrease in pH‚ more bacteria present‚ and an increase in absorbency. The results proved that fermentation occurred with three positive confirmatory results from the gas production‚ pH‚ and turbidity tests‚ while the Gram stain test acted as a negative confirmatory test. Introduction: The main goal of this
Premium Carbon dioxide Kefir Gram staining
Dalandan (Citrus aurantium) as alternative decolorizers in Gram Staining bacteria. Kamias (Averrhoa bilimbi) has a high oxalic acid content‚ fruit used to remove stains from clothing and for washing hands‚ removing rust and stains from metal blades. Dalandan (Citrus aurantium) is an aromatic variety of citrus that produces highly bitter‚ acidic fruits. Escherichia coli‚ a gram-negative bacillus that will appear as blue or violet when Gram stained‚ because it has a thick cell wall that prevents the
Premium Gram staining
processes with which you are not familiar. Record the results of your investigations of each unknown in Table 1 by completing the following steps: 1) Apply the stain to your first unknown slide and examine it under the microscope. 2) Record the shape of the bacteria‚ the arrangement of the bacteria‚ and the gram staining characteristics. 3) Analyze and record the G+C content of the sample by dragging the DNA tube that corresponds to the bacterial sample to the GC Content
Premium Bacteria DNA RNA
Trypticase Soy Agar plate to isolate individual colonies to be studied‚ tested and identified. After incubation of the individual TSA plates‚ the morphologies were viewed and noted and a Gram stain was completed on each individual bacterium‚ which will be referred to as Bacteria #1 and Bacteria #2. After the Gram reaction was determined on Bacteria #1 and Bacteria #2‚ different biochemical tests were done according to the dichotomous keys provided in the lab manual. All the tests were performed by
Premium Bacteria Escherichia coli Microbiology
identification of a mixed culture of Gram-negative and Gram-positive bacteria 2. Author: Nick Fiore‚ University of Kansas‚ Biology 402‚ Fall 2014 3:00pm room 6040 3. Abstract: The purpose of this experiment was to isolate two unknown bacteria and perform a series of selective and differential tests to correctly identify each. After the bacteria was isolated a series of differential and selective tests following the dichotomous key attached were used to identify each bacteria. The Gram-positive bacteria were
Premium Bacteria Microbiology Gram staining
OF RESEARCH 4 OBJECTIVES OF STUDY 4 RESEARCH METHODOLOGY 4 METHOD(S) TO FACILITATE MICROBIAL IDENTIFICATION 5 Gram stain 5 Culturing 5 MATERIALS TO BE USED 5 ETHICAL CONSIDERATIONS 6 SAMPLE COLLECTION 6 SAMPLE ANALYSIS METHOD 7 DAY 3 – Expected Results 9 DISSEMINATION OF RESULTS 9 WORK AND TIME SCHEDULE 10 FINANCE BUDGET 10 CONCLUSION 12 REFERENCE LIST 13 BIBLIOGRAPHY 14 ANTIMICROBIAL PROPERTIES OF SOIL ABSTRACT Isolation and characterization of
Premium Bacteria Microbiology Antimicrobial
identify the unknown cultures. The differential tests used to identify the unknown cultures were Gram stain‚ Catalase‚ Mannitol Salt Agar (MSA)‚ Blood Agar‚ Novobiocin‚ Coagulase‚ and DNAse (Alachi‚ 2007). Rebekah Worley February 21‚ 2012 Mitchell Section 4 Biol 311 Staining and Identifying Unknown Bacteria Introduction: The microbiology lab up to this point has been used to teach the students how to stain and identify bacteria. There are several types of staining through which the bacteria can
Premium Gram staining Staining Microbiology
difference between cyanobacteria and purple and green phototrophic bacteria is? a) energy source b) cell wall type c) Oxygen production d) cell type e) color 17) You have isolated a gram-positive rod. What test will you perform next? a) gram stain b) lactose fermentation c) endospore stain d) flagella stain e) DNA fingerprint Short answers. Fill in the blanks or give a short answer for the following. 1) Your field of view through a microscope is 0.3 millimeters. If you have a worm
Premium Bacteria Archaea Eukaryote
Background: In Jane 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
Premium Bacteria
unknown material was tube number twenty. I did a gram stain‚ oxidase test‚ and used three different medias to narrow down and identify my unknown organism. The first step I took in identifying was a gram stain. This gram stain would reveal whether my organism is gram positive or gram negative which would narrow my choices from fifteen options down to six. After completing the gram stain‚ my unknown was the color pink. This revealed my unknown as being gram negative. I also used the microscope to identify
Premium Bacteria Microbiology Staining