Many types of fruit turn brown when they are cut open and exposed to oxygen in the air. The brown color is the product of an enzyme that combines compounds in the fruit with oxygen from the air. Use your knowledge from our potato lab or simulation to answer the following question. You are having guests for dinner and have prepared a tray of freshly cut fruit for them to eat as a snack before the meal. Your guests call to inform you that they will be about an hour late due to winter weather. What things might you be able use or do to prevent the fruit from turning brown before your guests arrive and still be able to enjoy the fruit? (2 points) Explain why your plan would work. (3 points)

An Illustrated Guide To Vet Med Term
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ISBN:9781305465763
Author:ROMICH
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Many types of fruit turn brown when they are cut open and exposed to oxygen in the air. The brown color is the product of an enzyme that
combines compounds in the fruit with oxygen from the air. Use your knowledge from our potato lab or simulation to answer the following
question.
You are having guests for dinner and have prepared a tray of freshly cut fruit for them to eat as a snack before the meal. Your guests call to
inform you that they will be about an hour late due to winter weather. What things might you be able use or do to prevent the fruit from
turning brown before your guests arrive and still be able to enjoy the fruit? (2 points) Explain why your plan would work. (3 points)
Transcribed Image Text:Many types of fruit turn brown when they are cut open and exposed to oxygen in the air. The brown color is the product of an enzyme that combines compounds in the fruit with oxygen from the air. Use your knowledge from our potato lab or simulation to answer the following question. You are having guests for dinner and have prepared a tray of freshly cut fruit for them to eat as a snack before the meal. Your guests call to inform you that they will be about an hour late due to winter weather. What things might you be able use or do to prevent the fruit from turning brown before your guests arrive and still be able to enjoy the fruit? (2 points) Explain why your plan would work. (3 points)
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Step 1

Enzymic browning is an oxidation reaction that takes place in some foods. Phenols and the enzyme phenolase are found in the cells of the fruits and when these are exposed to oxygen in the air, the oxygen causes a reaction.  The phenolase changes the phenols into melanin, which has a brown color. To stop the oxidative reaction, the phenolase enzymes need to be denatured.

Even though there are multiple options which can be used to prevent this browning process such as using enzyme inhibitors, lower temperatures using deep freezing, immersing the fruits or vegetables in water to cut off the supply of oxygen from air. 

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