CoQ10 is light sensitive and has melting point of 48deg. If you want to open the CoQ10 capsule and add the capsule contents to cold food then it would be fine as long as consumed immediately after opening the capsule. The CoQ10 inside the capsule shell is not soluble and therefor may be problematic if trying to dissolve with water. As such it would be better if added to yogurt or a smoothy (for example) and consumed straight away. As CoQ10 is fat soluble it would ideally be taken with food containing sources of fat.