11 Questions
Which parameter of plant and animal tissues is referred to as intrinsic parameter?
Nutrient content
At which pH values do most microorganisms grow best?
Around 7.0
Which microorganisms tend to be more fastidious in their relationships to pH?
Pathogenic bacteria
What is the term used for the oxidation-reduction potential of plant and animal tissues?
Eh factor
Which factor should not be taken as precise boundaries for microorganisms' pH minima and maxima?
Oxidation-reduction potential (Eh)
What is the term used for the parameters that are inherent part of plant and animal tissues?
'Intrinsic' parameters
Which type of acid permits growth at a lower pH value for certain lactobacilli?
Citric acid
In the presence of 0.2 M NaCl, which bacterium has been shown to grow over a wider pH range?
Alcaligenes faecalis
Which of the following foods falls below the point at which bacteria normally grow, as indicated in Table 3–1?
Wine
What is a common observation regarding fruits and spoilage?
They generally undergo mold and yeast spoilage
Which acid type does not permit growth at a lower pH value for certain lactobacilli?
Lactic acid
Explore the characteristics of plant and animal tissues that affect the growth of microorganisms, and learn about the natural defense mechanisms that these organisms have against microbial invasion. Understand how these phenomena can be utilized in preventing or slowing down the growth of harmful pathogens in fresh foods.
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