Different temperatures optimize the activity of alpha or beta amylase, resulting in different mixtures of fermentable and unfermentable sugars. (craftbeer.com)
Do not try different mixtures at the same time, try one for a specific time say one month before trying a different recipe. (beautyzion.com)
By isolating five bacterial strains of endophytes found inside S. halepense rhizomes (subterranean stems used for storage and vegetative reproduction) and growing them in the lab in different mixtures of substrates, the authors determined that these microbes were able to fix and mobilize nitrogen, phosphorus, and iron. (sciencedaily.com)