![]() ![]() Talking about a point of origin implies you're talking about them in the genetic sense, and for geneticists a lager yeast used to be the informal name for S.pastorianus and now would be for any cerevisiae x eubayanus cross.įor a biochemist, it would be a brewing yeast that can produce alpha galactosidase and so can eat melibiose, a microbiologist would define it as one that can't grow at 37C. You can imagine monks buying some wine barrels and then either filling them with beer or using the lees for brewing.ĭepends what you mean by a "lager yeast". ![]() Kinda cute that WLP838 Southern German Lager is an ale yeast like WLP800, which would make sense in terms of the history, hopefully it will prove to be a kolsch yeast.Īlso hopefully 1272 will prove to be a BRY-97 relative, and LondonESB close to Windsor as suggested by 's PCRs.Īlso notable that the "Chimay" group of Abbaye, WLP500 Monastery and 1214 Belgian Abbey are a kudriavzevii hybrid, which is usually found in wine yeasts. It will be interesting to drill down to the detail - WL029 and Wyeast 1187 have previously been placed on the main ale family tree, it could be something like a small chunk of eubayanus DNA rather than a "full" lager hybrid. And then we've had other labs sequence genomes that haven't had a commercial interest in secrecy, so it's only been odd ones like WLP515 that we haven't been sure about. And White Labs confirmed many of them in updates to their own catalogue, only a few of the original guesses - all of them "we're doubtful" ones - were wrong. For one thing - they were very clear about their confidence levels, some were confirmed by known sequences from other sources, some just fitted the pattern (US-UK-German etc just looked too much like WLP001/2/3 to be a coincidence when the US one was known to be 001), and they were clear that there were a few that just didn't fit. You're referring to Suregork et al's original attempts to identify strains in the Gallone/White-Labs paper. Not sure if it changes much, I guess with WLP051 Cal V turning out to be Pastorianus and lots of "lager" breweries turning out to actually be using "ale" yeasts it's not surprising I emailed the author last night as well as Mr Suregork so will see if anyone more qualified in genomics than I am has some insight. ![]() WLP351 could be a cerevisiae x eubayanus x uvarum hybrid WLP800 probably confirmed further to be cerevisiae WLP838 S.German Lager could be Cerevisiae WLP029 Kolsch could be Pastorianus not ale I am not sure of the methodology used to determine the genotypes of the yeast, but if the organism taxonomy is to believed and these are the right strains analysed then some interesting findings. (sort by sample name descending to see the WLP/WY strains) ![]() modern lager yeastĪnd more interesting is the table of data Here's the link to the study from Langdon et al which appears to have been run for a paper investigating the lineage of eubayanus hybrids, i.e. Eric's Beer List Here is a list of beers I have tried so far.So i've been finding more evidence that WLP800 is s.cerevisiae from some genome sequence reads, and in my travels I found this, the submission date is Feb/19 but the genome reads were uploaded at the end of August. ![]()
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