A composition comprising dried microorganisms, obtainable by a process comprising: culturing one or more species of a microorganism admixing the cultured microorganism with one or more zeolite carriers such that the culture to carrier ratio is less than 1:4 (w/w) treating the microorganism with pulsed electromagnetic fields incubating the culture: carrier mixture for at least 6 hours and drying the microorganism so as to reduce the moisture level to between 1 wt % to 6 wt %. The combination of admixing the cultured microorganism with one or more carriers and treating the microorganism with pulsed electromagnetic fields results in the dried microorganisms in the composition have significantly enhanced initial survival rate and/or shelf-life.
