How much would x-raying damage supplements?

http://blog.tsa.gov/2009/09/new-procedu ... -with.html

I read here that powders are x-rayed before you can take them on a plane, but fortunately you can take as much as you want. I know that x-rays damage many things, including vitamin E. How about stuff like vitamins, amino acids, pregnenolone, or tianeptine? I don't know if I should take the whole bags, or take smaller portions and get the rest mailed to me.

Maybe this paper will provide some information, if it isn't radiation propaganda.

Evaluation of the Effects of Radiation from an X-ray Baggage Inspection System on Microbial Agents

Regarding vitamin E, if it comes from soy, maybe it has some cesium:

Distribution of radioactive cesium ((134)Cs Plus(137)Cs) in a contaminated Japanese soybean cultivar during the preparation of tofu, natto, and nimame (Boiled Soybean).