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Applied Microbiology and Fermentation Process Quiz
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Applied Microbiology and Fermentation Process Quiz

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Questions and Answers

What is the main focus of applied microbiology?

  • Study of proteins in prokaryotes and eukaryotic microbes
  • Study of enzymes in prokaryotes only
  • Study of enzymes, proteins, molecular biology, etc. in prokaryotes and eukaryotic microbes (correct)
  • Study of enzymes in eukaryotic microbes only
  • What is one of the key purposes of using microbes in applied microbiology?

  • To increase acidity in food products
  • To decrease the protein content in food products
  • To enhance the water content in food products
  • To improve texture, taste, and flavor of food products (correct)
  • What process is commonly used for converting milk into yoghurt?

  • Fermentation process (correct)
  • Filtration process
  • Distillation process
  • Oxidation process
  • Which microbes are commonly used in the production of cheese?

    <p>Fungi</p> Signup and view all the answers

    What is the first step taken when producing milk products like yoghurt and cheese?

    <p>Pasteurizing the milk to destroy unwanted microbes</p> Signup and view all the answers

    Which compound contributes to the buttery flavor in dairy products like yoghurt?

    <p>Diacetyl</p> Signup and view all the answers

    What bacterial strains are added to milk for industrial production of yoghurt?

    <p>Streptococcus thermophilus and Lactobacillus delbrueckii</p> Signup and view all the answers

    What compound contributes to the dense consistency of yoghurt during its production?

    <p>Lactic acid</p> Signup and view all the answers

    How is the characteristic taste of yoghurt developed during its production?

    <p>Acetaldehyde-like compounds from lactobacilli</p> Signup and view all the answers

    Which enzyme is traditionally used to impart dense texture to cheese during production?

    <p>Rennet from the alimentary canal of cattle</p> Signup and view all the answers

    How is the shelf life and probiotic properties of yogurt improved during manufacturing?

    <p>By pasteurization</p> Signup and view all the answers

    What types of cheese are formed after storing freshly prepared cheese for 3 to 12 months?

    <p>Semi-hard cheddar cheese</p> Signup and view all the answers

    Study Notes

    Applied Microbiology Focus

    • Centers on the practical application of microbial sciences to address human needs and solve problems in various fields.
    • Involves research and utilization of microorganisms in health, agriculture, and industrial processes.

    Purpose of Microbes in Applied Microbiology

    • Key purpose includes the development and improvement of products such as food, pharmaceuticals, and biofuels through microbial processes.

    Milk to Yoghurt Conversion

    • The process of fermentation is commonly used to convert milk into yoghurt.

    Microbes in Cheese Production

    • Lactic acid bacteria, particularly species like Lactococcus lactis and Streptococcus thermophilus, are commonly used in cheese production.

    Initial Step in Milk Product Production

    • Pasteurization is the first step taken when producing milk products like yoghurt and cheese, aimed at eliminating harmful microorganisms.

    Compound for Buttery Flavor in Dairy

    • Diacetyl is the compound responsible for the buttery flavor in dairy products like yoghurt.

    Bacterial Strains in Yoghurt Production

    • Specific bacterial strains, such as Lactobacillus bulgaricus and Streptococcus thermophilus, are added to milk for industrial yoghurt production.

    Compound for Dense Yoghurt Consistency

    • Pectin contributes to the dense consistency of yoghurt during production.

    Taste Development in Yoghurt

    • The characteristic tangy taste of yoghurt develops due to the production of lactic acid by fermentation from the added bacterial cultures.

    Enzyme for Dense Cheese Texture

    • Rennet, containing the enzyme chymosin, is traditionally used to impart a dense texture to cheese during its production.

    Improving Yogurt Shelf Life and Probiotic Properties

    • Techniques like low-temperature pasteurization and the addition of stabilizers enhance the shelf life and probiotic characteristics of yoghurt during manufacturing.

    Cheese Types Based on Storage Duration

    • Cheese varieties such as cheddar and gouda are formed after storing freshly prepared cheese for 3 to 12 months, allowing flavor and texture development.

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    Description

    Test your knowledge on applied microbiology, enzymes, proteins, molecular biology, and the fermentation process used in producing food and medicines with the help of microorganisms. Explore the microbes involved in the conversion of milk into yogurt and the production of dairy products.

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