I thought of this due to coconut fiber, though a search makes me think it probably doesn't apply if the fiber is insoluble. But anyway, there's got to be particular bacteria that do a better job of processing certain foods. Tropical bacteria likely do a better job with tropical foods. Does this make any sense, or does it not really matter that much? I vaguely remember something about sea-weed and adaptations involving bacteria in Japan.
Certainly, there would be a lot of overlap, with much of the gut flora perfectly happy eating the same fibers, but are there particular ones that run optimally on more esoteric ones?
