There's also this Polish (startup? company? hard to say) Elementa Critica Sp. z o.o. They are basing on microbes discovered in one unusually safe coal mine in Poland - these bacteria eat methan and produce ectoine among other things, and the company attemp to use them on industrial scale (they already have patented process to isolate the ectoine from grown bacteria).
http://scienceinpoland.pap.pl/en/news/news,400629,polish-ect...