by Tim Hall on Tue Apr 19, 2011 1:16 am
Sprouting grains/legumes disables enzyme inhibitors and activates certain enzymes in the seeds so the stored energy can be used by the emerging embryo. Fermentation does something similar, but for a different reason and with a different end result.
Bacteria and/or yeasts act on the seeds enzymatically too, but they do this to make the stored energy available for their own consumption (or yours, depending on the point of view). The end result is a dramatically increased acidity, mostly either lactic or acetic acid, which deactivates phytic acid.