hmm, im not sure about this one, i know you can heat up the oil to a high degree without altering the hormone EX: putting it in a microwave, but im not sure about freezing, Ive never had that problem and its about 0 degrees at night by me at the moment! I know your supposed to keep gear at about room temp. i would talk to a chemist and ask if the molecules mutate when the reach or drop to a certain degree. I know temperature effects the shape of proteins but im not sure about hormones, im not that far in my sciences yet! Sorry bud.
BUMP