Question

Does colour change when food is rancid

Answer 1

Color-coded smart tag tells you when food has gone bad. ... If the tag (and the milk it is attached to) is exposed to higher temperatures, the tag will change color faster — just like your milk. The color change is caused by tiny silver and gold nanorods reacting with each other over time.

Answer 2

Answer: no there is no change in colour

Explanation: there is a change only in taste not in a colour