You can get good, pre-formulated Musa proliferation medium here (it has everything you need in it):
MUSA (BANANA) MULTIPLICATION MEDIUM - Media, Basal Salts, & Vitamins - M462
And for the final stage, rooting and shoot elongation, you can order this:
BANANA AGS BASAL MEDIUM - Media, Basal Salts, & Vitamins - B144, and add sugar and a gelling agent (which is available from the same company).
I agree with James, UV will likely not be good enough to do the job. However, the vessels, medium and tools can be easily sterilized properly with a small stove top pressure cooker, and the tissue sterilized with alcohol. These sterilization steps however do not replace using a HEPA filter in your hood, that is to keep things sterile once you start working, but you still need to get everything you put in the hood sterile initially.