Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Textbook Question
Chapter 28, Problem 2CAE
Researchers at the CDC inoculated apple cider with 105 E. coli 0157:H7 cells/ml to determine the fate of the bacteria in apple cider (pH 3.7). They obtained the following results:
| Number of E. coli O157:H7 cells/ml after 25 days | |
| Apple cider at 25°C | 104 (mold growth evident by 10 days) |
| Apple cider with potassium sorbate at 25°C | 103 |
| Apple cider at 8°C | 102 |
What conclusions can you reach from these data? What disease is caused by E. coli 0157:H7? (Hint: See Chapter 25.)
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Strain A
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Figure 1. Growth curves of the three E. coli strains A, B and C in three media: I, minimal medium
containing glucose; II, minimal medium containing glucose and arginine; and III, minimal
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Chapter 28 Solutions
Microbiology: An Introduction
Ch. 28 - What is industrial microbiology? Why is it...Ch. 28 - How does commercial sterilization differ from...Ch. 28 - Why is a can of blackberries preserved by...Ch. 28 - Outline the steps in the production of cheese, and...Ch. 28 - Beer is made with water, malt, and yeast; hops are...Ch. 28 - Why is a bioreactor better than a large flask for...Ch. 28 - The manufacture of paper includes the use of...Ch. 28 - Describe an example of bioconversion. What...Ch. 28 - Prob. 9RCh. 28 - NAME IT Van Leeuwenhoek was the first to see this...
Ch. 28 - Which bacteria seem to be most frequently used in...Ch. 28 - Methylophilus methylotrophus can convert methane...Ch. 28 - Faded worn-look denim is produced with cellulase....Ch. 28 - Foods packed in plastic for microwaving are a....Ch. 28 - Acetobacter is necessary for only one of the steps...Ch. 28 - Use the following choices to answer questions 35:...Ch. 28 - The spoilage of canned foods caused by Geobacillus...Ch. 28 - A heat-resistant fungus that causes spoilage in...Ch. 28 - The term 12D treatment refers to a. heat treatment...Ch. 28 - Which one of the following is not a fuel produced...Ch. 28 - Which type of radiation is used to preserve foods?...Ch. 28 - Which of the following reactions is undesirable in...Ch. 28 - Which of the following reactions is an oxidation...Ch. 28 - Suppose you are culturing a microorganism that...Ch. 28 - Researchers at the CDC inoculated apple cider with...Ch. 28 - The antibiotic efrotomycin is produced by...
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