There are a few examples of plant enzymes having physiologically relevant impacts on the human diet, and the formation of sulforaphane in broccoli is one of them.
If you’re new to sulforaphane, check out my videos, Broccoli Versus Breast Cancer Stem Cells, and Sulforaphane: From Broccoli to Breast. For more on raw food diets, check out my videos Raw Food Diet Myths; Best Cooking Method; and Raw Food Nutrient Absorption. And for more on keeping our good bacteria happy, see all my videos on gut flora, including one on how the phytonutrients in flax seeds go through a similar transformation in our gut: Just the Flax, Ma’am.
Note that one of the sources for this video is open access, so you can download it by clicking on the link in the Sources Cited section, above.