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Another study focused on microbial populations in an American coolship brewery detected only ''Pediococcus'' on grain samples, but the lack of detection of other microbes was attributed to the methods used <ref>[http://elifesciences.org/content/4/e04634 Mapping microbial ecosystems and spoilage-gene flow in breweries highlights patterns of contamination and resistance. Nicholas A Bokulich, Jordyn Bergsveinson, Barry Ziola, David A Mills. March, 2015.]</ref>.
* [https://lirias.kuleuven.be/bitstream/123456789/323419/2/Juste_et_al._FEMS2011_mout%20definitief.pdf See this study] for a list of microbes that were found on malt using DNA methods(this study found a very small population of ''Clostridium jejuense'' on one malt sample).
*[https://lirias.kuleuven.be/bitstream/123456789/323403/2/Just%C3%A9%20et%20al.%202011_Microflora%20during%20Malting%20of%20Barley%20Overview%20and%20Impact%20on%20Malt%20Quality.%20Brewing%20Science%2064,%2022-31..pdf See Table 2 of this study] for a list of microbes that were found using traditional plating methods.
* See this video presentation by Bart Lievens at the 2015 Belgian Brewers Conference: