[Mr. Lucky]

You're OK if you eat the whole soybean, of some sorta girlie food made from the whole bean.

Hexane is an astringent used in the oil/meal extraction process. The bean is ground up and washed with hexane. The hexane removes the oil and the solution is then heated causing the hexane to evaporate, leaving only the oil (and meal). The hexane is recaptured (except for 23 parts per million, apparently) and the whole process starts over.

[Varda]

Thanks for that. I’m using soy isoflavones in pill form and a quick net search says the process does use hexane. I’ll have to look around to see if a good approximation can be had using whole beans or soy milk.