Please enable JavaScript.
Coggle requires JavaScript to display documents.
Testing orange juice for vitamin C Amy Mannion (supervalue brand…
Testing orange juice for vitamin C
Amy Mannion
supervalue brand
number of drops needed to react with all the iodine
4ml
Our method
4g of starch solution in a test tube
add 3 drops of iodine solution . a blue black colour will appear
hold the white card behind test tube
add 20g of water
keep the white card in place - add the juice drop by drop
keep adding juice until the blue black colour has gone
write down number or ml of juice used
test all juices the same
innocent brand
number of drops needed to react with all the iodine
6ml
least vitamin c
Centra Brand
number of drops needed to react with all the iodine
4ml
Naturis
number of drops needed to react with all the iodine
5 ml
Dunnes brand
number of drops needed to react with all the iodine
2.5ml
Most vitamin C
Tropicana
number of drops needed to react with all the iodine
5ml