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Orange ripening and vitamin CFeatured science projectScience project video

Observation

The results show that the unripe orange has the most vitamin C, while the fully ripened orange has the lowest amount of vitamin C.
 

State of orange Ripened Half ripe Unripe
Number of iodine-starch drops 8 10 13

The above results were then plotted onto a graph, as shown below.
 

 

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Complexity level:
5
Project cost ($):
20
Time required:
1 hour for preparation, 1 hour for experiment
Material availability:
Iodine may be obtained from a chemist. Basic laboratory equipment required.
Safety concerns:

None