I've never heard of it changing color when it is cooled, but it does change color with pH, and can be used as an indicator for acids and bases.
See the Web Links for more information about using cabbage color as a pH indicator.
There is no such thing as purple cabbage juice because red cabbage juice is actually already purple, its just called red cabbage jucie.
Cale or red cabbage.
Yes, it is perfectly safe to eat purple cabbage, both cooked or raw.
red onions, eggplant, red cabbage, and a type of potato
No you idiot it isn't im 11 and i know that!!!
it will be purple
purple cabbage is food
You eat the leaves of the purple cabbage, just as with the green cabbage.
There is no such thing as purple cabbage juice because red cabbage juice is actually already purple, its just called red cabbage jucie.
Cale or red cabbage.
Basic colour of C.J. is purple blue
Yes, it is perfectly safe to eat purple cabbage, both cooked or raw.
Red cabbage turns blue or purple in color when you add an alkali, such as baking soda or ammonia. This color change is due to compounds called anthocyanins in the cabbage that react with the alkaline solution.
When sodium hydroxide is added to red cabbage juice, the cabbage juice will change color. The cabbage indicator will turn from red/pink to blue/purple because sodium hydroxide is a strong base, causing a shift in the pH of the solution. This color change is due to the anthocyanin molecules in the red cabbage juice reacting with the change in acidity.
Alkalis turn red cabbage juice blue/green/yellow.
kobih
More than likely, it is probably red cabbage. While it is called "red cabbage," it is actually purple when raw.