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1.3

Minor Versionm

by Suhail Ahanger

Introduction

Take some edible food (rice, bread etc) and make a paste of it by adding water. Make three parts and add Vinegar to one and Potassium Sorbate to the other and nothing to the third. Watch what happens over 2-7 days.

    • Use adult supervision while chopping the vegetables/fruits.

    • Do not ingest any of the food items.

  1. Dice vegetables like carrot, cabbage, potato, radish etc Make a juice out of any fresh fruit.  Here we've used apple juice. Make a juice out of any fresh fruit.  Here we've used apple juice.
    • Dice vegetables like carrot, cabbage, potato, radish etc

    • Make a juice out of any fresh fruit. Here we've used apple juice.

  2. Take potassium sorbate and water in 1:3 ratio respectively, by volume. Take a small quantity of potassium sorbate.  A bottle cap or even a tablespoon will be ideal for this experiment's purpose. Mix them well using a spoon to make the solution.
    • Take potassium sorbate and water in 1:3 ratio respectively, by volume.

    • Take a small quantity of potassium sorbate. A bottle cap or even a tablespoon will be ideal for this experiment's purpose.

    • Mix them well using a spoon to make the solution.

  3. Take the food you intend to experiment with (here cabbage) in  three different containers. Pour 1/2 tea-spoon of  potassium sorbate solution in one of the three samples and mix . Pour 1/2 tea-spoon of vinegar in another sample and mix.
    • Take the food you intend to experiment with (here cabbage) in three different containers.

    • Pour 1/2 tea-spoon of potassium sorbate solution in one of the three samples and mix .

    • Pour 1/2 tea-spoon of vinegar in another sample and mix.

    • Leave the third container untouched.

  4. Repeat the previous step for the other vegetables/fruits you've chopped. Do not forget to label the containers with the  kind of preservative used. Alternatively, you can mix a few fruits and vegetables together to make a salad and then add the preservative to it.
    • Repeat the previous step for the other vegetables/fruits you've chopped.

    • Do not forget to label the containers with the kind of preservative used.

    • Alternatively, you can mix a few fruits and vegetables together to make a salad and then add the preservative to it.

  5. Take the fresh fruit juice in three different containers and repeat the previous steps. You could use any edible liquid to experiment. You could use any edible liquid to experiment.
    • Take the fresh fruit juice in three different containers and repeat the previous steps.

    • You could use any edible liquid to experiment.

    • Adding too much or too little preservative.

    • Avoid using certain processed foods like tetra pack juices / confectioneries / baked food items etc as they already contain preservatives.

  6. Download or copy the tabular columns in your note book. Observe for change in odour, colour and formation of fungi in each sample every day and record your observations in the table. One tabular column has been partially filled for your reference. Fill the remaining columns and tables accordingly.
    • Download or copy the tabular columns in your note book.

    • Observe for change in odour, colour and formation of fungi in each sample every day and record your observations in the table.

    • One tabular column has been partially filled for your reference. Fill the remaining columns and tables accordingly.

  7. The following pictures show the status  of food on Day 1: a) without preservative b) with vinegar and
    • The following pictures show the status of food on Day 1:

    • a) without preservative

    • b) with vinegar and

    • c) with potassium sorbate

  8. Similarly, this is the status on Day 2 Similarly, this is the status on Day 2 Similarly, this is the status on Day 2
    • Similarly, this is the status on Day 2

  9. And Day 3 And Day 3 And Day 3
    • And Day 3

Finish Line

Vishal Bhatt

Member since: 04/26/2017

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