English to Spanish Science Biology (-tech,-chem,micro-) microbiology

Context: "Konohana-kin is a fermented microorganism solution where effective locally adapted microorganisms are selected from natural ingredients and then compound cultured."

I cannot find the meaning of that phrase, and else I am not a biologist and can't picture what it is talking about. I guess it refers to "cultivos compuestos": "y luego se cultivan de manera compuesta/ de manera combinada". I would thank any help supplied to find the right translation.
Cheers