Apple Dehydration

by | Oct 14, 2022 | Biology, Experiments


In this experiment, we will be determining the effect of salt water and lemon juice on the dehydration rate of several types of apples.


To determine how lemon juice and saltwater affect the dehydration rate of various types of apples.


1. We hypothesized that lemon juice will increase the rate of hydration of apples.

2. Dehydration is the loss of water from any given material.

3. Regardless of the type, each apple experience a dehydrating rate that ranges from 83% to 87%.


1. Three different types of apples. This will include Granny Smith, Gala, and Golden Delicious.

2. Knife

3. Distilled water

4. Saltwater

5. Lemon Juice

6. Color-coded screen

7. Cardboard chamber

8. Notebook

9. Pen or Pencil


Step 1: Take three types of apples like Gala, Granny Smith, and Golden Delicious.

Step 2: Cut 27 slices from each of these apples.

Step 3: Weight these slices.

Step 4: Dip these slices in three solutions: saltwater, distilled water, and lemon juice.

Step 5: Take a color-coded screen and place the specimen on it.

Step 6: Place this color-coded scene in a cardboard chamber.

Step 7: Place this chamber near a window.

Step 8: Measure the weight loss in the specimen on a regular basis until the weight becomes constant.

Step 9: When you no longer see the weight loss, that is the state when weight becomes constant.

Step 10: Record your observations.


1. From the obtained measurement, we found no significant difference between all three apples for the rate of dehydration.

2. We observe that no matter what their type is, they were able to lose water that ranges from 83% to 87%.

3. When we dipped the apple in a solution of saltwater, it dehydrated slower than we dipped the apple in distilled water.

4. The difference between when an apple was dipped in saltwater and when dipped in distilled water ranges from 2% to 7%.

5. We observed that most of the dehydration rate of water took place for the first three days.

6. Apples got most affected by saltwater.


1. The hypothesis in which we assumed that the rate of dehydration of apples will increase by lemon juice is not right.

2. For the first three days of the experiment, the dehydration rate was slower for the saltwater.


1. Try to perform at least five tests with each kind of apple for accurate results.

2. Remove the specimen only after it stops losing weight further.


In this experiment, we determined the effect of lemon juice and saltwater on the dehydration rate of three kinds of apples.

Viva Questions With Answers

Q.1 What was the aim of your experiment?

ANS. We aimed to determine the effect of salt water and lemon juice on the dehydration rate of various kinds of apples.

Q.2 Most of the dehydration took place for how many days?

ANS. The dehydration rate of water took place mostly for the first three days.

Q.3 What is the difference between dipping apples in saltwater and distilled water?

ANS. Apple when dipped in saltwater dehydrates slower than when it is dipped in distilled water.


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