Food Spoilage and Preservation
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Questions and Answers

What are some general preventive measures to avoid the spread of malaria?

Use mosquito net and repellents, spray insecticides, and control breeding of mosquitoes.

How can microbial growth be prevented in a community?

Maintain personal hygiene, consume properly cooked food and boiled drinking water, and drink boiled drinking water.

How can food become 'poison' according to the text?

Microorganisms that grow on our food sometimes produce toxic substances, making the food poisonous.

What are the consequences of consuming food spoiled by microorganisms?

<p>Consuming food spoiled by microorganisms can lead to serious illness and even death.</p> Signup and view all the answers

How can food preservation help prevent food poisoning?

<p>Preserving food helps prevent it from being spoilt by microorganisms, thus reducing the risk of food poisoning.</p> Signup and view all the answers

What are the signs that indicate food has been spoiled by microorganisms?

<p>Spoiled food emits bad smell, has a bad taste, and changes color.</p> Signup and view all the answers

How can bread left unused under moist conditions be affected by microorganisms?

<p>Bread left unused under moist conditions can be attacked by fungus, which is a type of microorganism.</p> Signup and view all the answers

What role do microorganisms play in causing food poisoning?

<p>Microorganisms that grow on food can produce toxic substances, leading to food poisoning.</p> Signup and view all the answers

What are some common chemicals used as preservatives to prevent microbial growth in food?

<p>Salts and edible oils.</p> Signup and view all the answers

How do low temperatures help in preserving food?

<p>Low temperature inhibits the growth of microbes.</p> Signup and view all the answers

Why are salt and acid preservatives added to pickles?

<p>To prevent the attack of microbes.</p> Signup and view all the answers

Give examples of common preservatives used in food products like jams and squashes.

<p>Sodium benzoate and sodium metabisulphite.</p> Signup and view all the answers

How does sugar help in preserving jams, jellies, and squashes?

<p>Sugar reduces the moisture content which inhibits the growth of bacteria.</p> Signup and view all the answers

Explain how the use of oil and vinegar prevents spoilage of pickles.

<p>Bacteria cannot live in such an environment.</p> Signup and view all the answers

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