oh duh im stupid I ment to mention this very important fact. The molecular weight of tannins can be quite high especially if they are attached to sugars or in polymer form. This GC-MS my friend is using can't look at molecular weights higher then 500 or 600 making it useless. In other words different sample preperation methods/ GC-MS methods would have to be tried to make these compounds visible. I dont think my friend really has time to do this kind of work and he is sorry for that.

also it should be noted that inhaling tannins assuming some of them are volatile into your lungs might not be such a nice thing. has anyone noticed increased irritation upon smoking the more impure jungle spice?