Don’t know about the “striking” part, but fermentation of veg has been done safely for a long time.

Think Kimchi, pickles, Sauerkraut or even things like soy sauce or chocolate. All fermented or have fermentation in the process. I had some fermented pickles this summer from a “picklefest”. They were awesome.

There are plenty of online sources, you’d need to look up what you want to try to make and follow the instructions.