Microbiology in Food Production
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Questions and Answers

What is the role of Lactobacillus in milk production?

  • It prevents the growth of all bacteria.
  • It produces carbohydrates that aid fermentation.
  • It produces acids that coagulate milk proteins. (correct)
  • It adds flavor to the milk.
  • What nutritional advantage does curd have over milk?

  • Higher fat content.
  • More lactose.
  • Lower protein content.
  • Greater vitamin B12 content. (correct)
  • Which gas is produced during the fermentation of dough by bacteria?

  • $CO_2$. (correct)
  • Nitrogen.
  • Oxygen.
  • Hydrogen.
  • What is the primary microorganism used for fermenting bread dough?

    <p>Saccharomyces cerevisiae. (B)</p> Signup and view all the answers

    Which microorganism is responsible for the holes in Swiss cheese?

    <p>Propionibacterium sharmanii. (A)</p> Signup and view all the answers

    What is the significance of microbes in industrial processes?

    <p>They can be cultivated on a large scale for various products. (B)</p> Signup and view all the answers

    Which traditional Indian drink is made from palm sap using microbes?

    <p>Toddy. (B)</p> Signup and view all the answers

    What characterizes different varieties of cheese?

    <p>The specific microbes used in production. (C)</p> Signup and view all the answers

    What is a common use of lactic acid bacteria (LAB) in the human body?

    <p>They maintain the stomach's microbial balance. (D)</p> Signup and view all the answers

    Which of the following is NOT a product made using microbes?

    <p>Ice cream. (D)</p> Signup and view all the answers

    Flashcards

    Curd Production

    The process of converting milk into curd using Lactobacillus bacteria. These bacteria produce acids that coagulate milk proteins and partially digest them, making curd more nutritious.

    Lactic Acid Bacteria (LAB)

    Lactic acid bacteria (LAB) are beneficial for the digestive system as they help maintain the balance of microbes in the stomach, preventing harmful microbes from taking over.

    Fermentation in Dough

    The process of using bacteria to ferment dough for foods like dosa and idli. These bacteria produce carbon dioxide gas, causing the dough to puff up.

    Yeast in Bread

    A type of yeast (Saccharomyces cerevisiae) used to ferment dough for bread, producing carbon dioxide gas that makes bread rise.

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    Toddy

    A traditional Indian drink made from fermented palm sap, often used in alcoholic beverages.

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    Microbes in Cheese

    The use of microbes to create unique characteristics in cheese, such as texture, flavor, and aroma.

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    Propionibacterium sharmanii

    The bacterium Propionibacterium sharmanii responsible for the characteristic holes in Swiss cheese. It produces large amounts of carbon dioxide gas, creating the holes as the cheese matures.

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    Industrial Microbiology

    The process of using microorganisms to produce industrial products like beverages and antibiotics on a large scale.

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    Microbes in Cheesemaking

    The use of specific microbes to develop the characteristic flavors, textures, and aromas of different cheese varieties. For example, roquefort cheese is made using a specific mold that gives it its unique blue veins.

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    Large-scale Microbial Culture

    Microorganisms can be grown in controlled environments to obtain large quantities of desirable products like antibiotics, enzymes, and other valuable compounds.

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