"Bread is Moldy" Food PPT Courseware 2

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"Bread is Moldy" Food PPT Courseware 2

Conditions for bread to become moldy

Mold grows quickly on that piece of bread?

Prepare two pieces of dry bread, (use a toothpick to put some mold on each piece of bread), keep the first piece of bread dry, drop 10 drops of water on the second piece of bread, put them in two plastic bags and line them with Tie the bag tightly and place it on the table.

Changing conditions: dry and wet

Prepare two pieces of dry bread (use a toothpick to put some mold on each piece of bread), drop 10 drops of water on each piece of bread, put them in two plastic bags respectively, tie the mouths of the bags tightly with thread and put them on the table for the first piece of bread. Place in the refrigerator and bring the second piece of bread to warm room temperature.

Changing conditions: low and high temperatures

Bread becomes moldy because an organism—mold—grows on it. Like other organisms, its growth requires nutrients and a suitable growth environment.

Suitable growing environment: temperature, moisture, air, light…

Because the mold produced during the mildew process contains substances harmful to the human body, moldy and spoiled food must not be used.

Various ways to store food

Causes of food spoilage

Food spoilage is caused by microorganisms.

The growth and reproduction of microorganisms, like plants and animals, require certain conditions such as air, moisture, and temperature.

In the right environment, they can reproduce at an alarming rate. More and more microorganisms decompose and absorb the nutrients in the food, and at the same time eliminate waste, so that the food is no longer the same as it was before, and the food becomes spoiled.

Given a fish, how many ways can you store it?

air sealed vacuum immersion

Moisture, exposure, drying, freezing

Temperature Grill Cook Roast Freeze

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For more information about the PPT courseware "Food Bread Moldy", please click the Food PPT Bread Moldy ppt tag.

"Bread is Moldy" food PPT download:

"Bread is Moldy" food PPT download Part 1: New knowledge explanation 1. Observe moldy bread Bread becomes moldy because a kind of mold grows on it. Observation experiment requirements Observe the appearance and color of the mold on the bread. Be careful when observing! ..

"Bread is Moldy" Food PPT:

"Bread is Moldy" Food PPT Part One: Observing Moldy Bread Use a magnifying glass to observe moldy bread. Record the changes that occur to the bread. Bread becomes moldy because a biological mold grows on it. Mold is the common name for filamentous fungi. ...

"Bread is Moldy" Food PPT Courseware 4:

"Bread is Moldy" Food PPT Courseware 4 I will fill in the blanks 1. In order to ensure the absorption of nutrients, some foods are suitable for ___, and some foods are suitable for ___. 2. The ____ and ____ in food will change after heating and become easily ____ and ____ by the human body. 3. Raw..

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Update Time: 2024-09-05

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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