i use a little propane torch for heat-curing bamboo for making flutes and soem other craftwork.
move slowly and steadily with a low flame along the pole,you'll see the color change from green to yellow,brown,dark brown,almost like you're airbrushing it. keep a rag handy for wiping down the surface resins that exude from the skin and ends.go from 1 end to the other so as not to trap moisture in spots.
it can help prevent cracking. i've never tried straightening it with heat but i know it's used for bending,it's really steam-bending. if the boo is fresh/wet/green then the heat is essentially making steam.adding sand inside prevents it from creasing . it's important to either 1: knock a hole through the nodes inside, or 2: drill a tiny hole between each internode/joint to relieve pressure,otherwise it could explode!!!bamboo in the campfire was used in asia to scare away tigers i heard.
heating,and a little beeswax/tung oil mix are the only things i use to preserve bamboo.it doesnt need much help! takes forever to decompose.
www.bamboocraft.net is a
great site for these kind of questions.
not a great video, but this will show you what i mean by keeping the flame moving and changing color.
http://www.youtube.com/watch?v=_dbq9h7Xu6Q