My hypothesis of Experiment 1 was incorrect. I thought that the orange juice will have the most Vitamin C, but it turns out that fresh pineapple juice has the most Vitamin C in it. This was really surprising.
I assumed that orange juice would have the most Vitamin C because everybody says that it is rich with Vitamin C, but my experiment proved that while orange juice has more vitamin C than apple juice and grapefruit juice, it doesn’t nearly have as much as pineapple juice.
In Experiment 2, sometimes the concentrate juices had more Vitamin C and sometimes it had less. Apple juice made from concentrate had even more vitamin C than the fresh pineapple juice. This was the most surprising observation. It is widely believed that fresh juices are better than those from concentrates. But nowadays juices from concentrates are fortified with vitamin C and so the vitamin C content of some of them could well be more than even fresh juices.
For Experiment 3, I was right when I said that the C-plus will have the least Vitamin C, but Kool-aid had the most, not Sunny D. When I tested the C-plus, nothing happened to the iodine. From that result, I was able to determine that C-plus has no Vitamin C. This was expected. However, what was not expected was that Kool-Aid had more Vitamin C than Sunny-D. Again, it must be noted that Kool-Aid was fortified with Vitamin C. Sunny D is supposed to be an orange based drink and is widely believed to be good for children. However, it is clear that as far as Vitamin C is concerned, it doesn’t compare well with Kool-Aid.
From my experiment, I can conclude that drinks which are fortified with vitamin C sometimes can be even better than fresh fruit juices.