How do you test an apple for vitamin C?

Answer 1

1. Crush the apple and shake it in warm water to extract the soluble substances

2. Take some of the water that had the apple in it and add it to 2cm3 of a 0.1% solution of DCIP (a blue dye)

3. If vitamin C is present, the blue dye will go colourless

Answer 2

To test an apple for vitamin C, you can use an iodine test kit that changes color in the presence of ascorbic acid (vitamin C). Simply follow the kit's instructions to see if the apple contains vitamin C. Alternatively, you can juice the apple and use a vitamin C test strip to detect the presence of the vitamin in the juice.