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Questions and Answers
What is the purpose of pasteurization?
What is the purpose of pasteurization?
- To increase the number of microbes in foods
- To change the taste of foods
- To preserve foods for a longer time
- To reduce the number of microbes in foods (correct)
Which method of pasteurization involves heating at 72ËšC for 15 sec?
Which method of pasteurization involves heating at 72ËšC for 15 sec?
- Batch method
- Continuous flow method (correct)
- Rapid method
- Instant method
What is the purpose of UV air in sterilizing systems?
What is the purpose of UV air in sterilizing systems?
- To increase the growth of microorganisms
- To cause DNA/RNA damage to microorganisms (correct)
- To reduce the shelf life of products
- To improve the taste of food
What is the decimal reduction time?
What is the decimal reduction time?
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How does ionizing radiation control microbial growth?
How does ionizing radiation control microbial growth?
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Study Notes
Pasteurization
- The purpose of pasteurization is to reduce the number of pathogens in a product, making it safe for consumption.
Methods of Pasteurization
- The "Higher Heat Shorter Time" (HHST) method involves heating at 72ËšC for 15 seconds.
UV Sterilization
- The purpose of UV air in sterilizing systems is to reduce microbial contamination.
Decimal Reduction Time
- The decimal reduction time is the time required to reduce the microbial population by 90% at a given temperature.
Ionizing Radiation
- Ionizing radiation controls microbial growth by damaging the DNA of microorganisms, making it difficult for them to reproduce.
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