SEALING IN VITAMIN C

Project done by: Theresa & Hon Ha 

Problem:

What is the effect of different containers on how well they seal in vitamin C.

Hypothesis:

We hypothesis that the plastic 2 L container will do the best out of all four products.

Procedure:

Step#1: We calculated the amount of water and Vitamin C crystals that we would need, then measured them out. This was all stirred together in a large container.

Step#2: We poured out the solution into the four separate containers which were, plastic bottle, carton, pitcher with a lid, and pitcher without a lid.

Step#3: For the following five days, we took out a small portion of the solution from each container, the amount being different each time. We put 25 drops into a test tube, 3 drops of the starch solution and then started dropping in the iodine. We would stop when the liquid would turn a deep brown.

Step#4: We recorded our results on a chart which was then transferred to a graph showing the change.

Materials:

- ascorbic acid crystals (7.5g) - distilled water (7.5 L) - 1 plastic bottle (2 L)

- 1 carton (2 L) - 2 pitchers - 1 with, 1 without lid (2 L)

- iodine - a dial-o-gram - 17 test tubes

- squeeze bottle - 3 eyedroppers

Observation:

We noticed that the pitcher without the lid started declining very quickly. The pitcher with the lid and the carton did the same as each other. But we observed that the plastic bottle was doing the best.

Conclusion:

We conclude that our hypothesis was correct, the plastic 2 L bottle that we tested, did seal in the vitamin C for the longest period of time.

Application:

Consumers now know that the best way to store their juices that have any Vitamin C in it, is to keep in some sort of plastic bottle that has a cap which seals.