Concept explainers
To tell:
Why is raw milk not generally used for the production of cheeses?
Introduction:
Raw milk contains many naturally occurring microbes; some microbes are useful for human body while others can cause potential damage to the health of an individual. The raw milk is pasteurized to remove harmful microbes and extended the shelf life of milk. Cheese is generally produced from pasteurized milk with the help of starter bacteria from Lactobacillus and Lactococcus.
Explanation of Solution
Raw milk is directly taken from an animal source which contains several microorganisms. Raw milk is pasteurized to eliminate harmful microbes and increases the nutrition benefits. Raw milk contains dangerous microbes including the Salmonella, E.coli, and Listeria. These bacteria are responsible for generating several foodborne diseases.
Raw milk is not generally used in the production of cheese because of its negative impacts and shorter shelf life. The harmful bacteria in raw milk affect the health of an individual if it has been taken directly. Cheese and other dairy products are produced from pasteurized milk to increase the shelf life and nutrition benefits of products.
The reason that the raw milk is not used for cheese making is discussed.
Want to see more full solutions like this?
Chapter 25 Solutions
EP MICROBIOLOGY:W/DISEASES BY..-MOD.ACC
- What are other food items that are derived from microbial processes? Identify the microorganisms involved in the production of these food microbiological productsarrow_forwardExplain why we need to pasteurize the milk before consuming.arrow_forwardHow could traditional dairy practice preserve the nutritional value of milk before the introduction of pasteurisation?arrow_forward
- Describe what the plate in each scenario looks like: A. Bacteria grows on mannitol salt agar and is negative for mannitol fermentation B. Bacteria grows on EMB agar and is positive for lactose fermentation C. Bacteria grows on MacConkey agar and is negative for lactose fermentationarrow_forwardWhich microbes are used as starter cultures in bread, beer, wine,cheeses, and sauerkraut?arrow_forwardIn which of the following foods are microorganisms involved in their production? O Coffee Chocolate O Olives Cheese All of the optionsarrow_forward
- Jams, jellies, preserves, honey, and other foodstuffs with a high sugar content hardly ever become contaminated by bacteria, even when the food containers are left open at room temperature. Why is this?arrow_forwardThe thermal death point is best described as:(a) The highest temperature that will support growth of amicrobial culture(b) The length of time required for killing 100% of mi-crobes in a 24-hour culture that is heated to 100°C(c) The temperature at which a previously growing 24-hourculture will begin to die(d) The temperature at which 100% of the microbes in a24-hour culture will be killed in 10 minutesarrow_forwardYou mixed up the numbers on the tubes when you inoculated the mannitol salt agar (MSA) plate. You do not know if you grew staph epidermis or E. coli. You found that the organism growing on the mannitol salt agar remained red after incubation. It is most likely that the organism is E.coli. a) True b) Falsearrow_forward
- What microbes are found in the following foods? –Country-cured ham –Dry sausages –Coffee beans –Miso –Poi –Olives –San Francisco Sourdough breadarrow_forwardA newly pregnant mother visits the maternal health clinic and asks about what foods she should avoid to prevent her susceptibility to foodborne illness. What foods are pregnant women recommended to avoid in order to prevent Listeria monocytogenes? asap pleasearrow_forwardWhich of the following cannot be grown in artificial media and must be grown in live animals or cells instead? Neisseria gonorrhoeae, the causative agent of gonorrhea Lactococcus lactis, a lactic acid bacterium used to produce cheddar cheese Staphylococcus aureus, a bacterium sometimes found in human nares (nostrils) Staphylococcus epidermidis, a bacterium routinely found on human skin Escherichia coli, a bacterium common in mammalian intestines 21 Treponema pallidum, the causative agent of syphilisarrow_forward