Lactobacillus is a facultive anaerobe which are extremely useful to us for it's ability to ferment and decompose a wide variety of matter.
Lactobacillus is a food-safe microbe that’s used to make yogurt, pickles, and other fermented foods. Sometimes, food processors also use Lactobacillus as a sanitizer. When added to either a liquid or solid that contains some type of sugar, Lactobacillus consume and digest the sugar, then excrete lactic acid as a metabolite or byproduct.
These microbes not only do no harm, but they’re also as good for you as they are for your plants. You have lactic acid bacteria of your own that live in your digestive tract.