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added Community Cultures Yeast Labs
A second study showed that a strain of ''S. cerevisiae'' was able to adapt and grow in a lab setting to increasing concentrations of lactic acid. After multiple generations and by slowly increasing the amount of lactic acid per generation, the researchers got the pH of the growth media (either raffinose or glucose plus lactic acid) all the way down to pH 2.8. At this low pH, the yeast began to use lactic acid as a food source. This might explain some anecdotal experiences by brewers who have seen the pH of kettle sour beers rise (more evidence is needed to confirm this hypothesis). The researchers found that the gene called ''ACE2'' is likely to be associated with the ability to adapt to low pH conditions. It is also a gene that controls the expression level of other genes, and is also responsible for forming "snowflake-like" structures (multicellular clumps of genetically identical cells that stick together after budding <ref>[https://www.quantamagazine.org/20151103-snowflake-yeast-multicellularity/ "Life’s Secrets Sought in a Snowflake". Emily Singer. Quantum Magazine. 11/03/2015. Retrieved 12/27/2016.]</ref>). The yeast strain began to form these "snowflake-like" clumps after being adapted to the low pH environment. Further work should be done to determine which strains of ''S. cerevisiae'' might be more easily adapted to low pH environments, or if possibly all strains of ''S. cerevisiae'' could be adapted to low pH environments over time <ref>[http://www.sciencedirect.com/science/article/pii/S1096717616301756 Evolutionary engineering reveals divergent paths when yeast is adapted to different acidic environments. Eugene Fletcher, Amir Feizi, Markus M.M. Bisschops, Björn M. Hallström, Sakda Khoomrung, Verena Siewers, Jens Nielsen. 2016.]</ref><ref>[http://www.nature.com/articles/ncomms7102 Origins of multicellular evolvability in snowflake yeast. William C. Ratcliff, Johnathon D. Fankhauser, David W. Rogers, Duncan Greig & Michael Travisano. 2015.]</ref>.
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See also:
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| BBX0104 – Saison Parfait: New World Saison Blend || A unique blend of previously unavailable commercially used Saison cultures. || 90-100 || Med-High || Normal to High Ale Temperatures || Saison Parfait is our New World Saison Blend, a new take on the modern saison yeast flavor and aroma profile. Saison Parfait pairs classic pepper & spice saison phenolics with prominent juicy fruit esters that evoke citrus and lemon peel, and a touch of banana for complexity. Even more unique, it finishes with a balanced, full-bodied and silky mouthfeel despite its high attenuation. Saison Parfait means the “Perfect Season”, and is our ode to the fall harvest season. A time for hard work and also celebration. The peasants of rural Flanders and Wallonia created the Saison, and what we now call Farmhouse beers, to drink for sustenance and merriment. Bruegel likely depicted the drinking of Saison beer in his classic paintings of rural country life, “The Harvesters” and “Peasant Wedding”.
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===[[Community Cultures Yeast Lab]]===
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! Name !! Source !! Attenuation !! Flocculation !! Temp°F !! Notes
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| TCL21 Ocotillo || Ocotillo plant in Big Bend, Texas || 86-91 || High || 69-74 || Suggested Use: Saison, Belgians, Farmhouse ales, Cider, Braggot, and wine. Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces bayanus'']]. Also POF+.
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| TCL22 Yucca || Torrey Yucca plant in Texas || 73-78 || Low || 68-72 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces bayanus'']]. POF+. Suggested Use: Witbier, Belgian Blond, Hefeweizen, Kristalweizen, Barrel aged beers.
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| TCL32 Chisos || Chisos Mountains, Texas || 86-91 || Low || 65-72 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces bayanus'']]. POF+. Suggested Use: Tripel, Belgians, Dubbels, Siason, Witbier, and farmhouse ales.
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| TCL25 Prickly Pear Blend || Big Bend, Texas || 73-80 || Med || 67-73 || Contains two strains of ''S. cerevisiae''. Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces cerevisiae'']]. POF+. Suggested Use: American Pale Ale, IPAs, English pales, Hopped Sour (bacteria not provided), Gose.
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| TCL34 The Window || Prickly Pear Fruit in Big Bend, Texas || 70-75 || Med/High || 66-72 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces cerevisiae'']]. POF+. Suggested Use: Belgians, Weizens, Trappist ale, Dubbels, German ales, and Saisons.
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| TCL31 The Falls || Columbine in Cattail Falls, Texas || 70-75 || Low || 62-72 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces bayanus'']]. POF+. Suggested Use: Witbier, Sour Witbier, Apricot Witbier, Citrus Wit, Hefeweizen, Belgian Ales, Dubbels, Trappist, Trippel, Saisons.
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| TCL24 Buttercup || Rio Grande River, Texas || 73-85 || High || 66-71 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces cerevisiae'']]. POF+. Suggested Use: Belgians, Barley wine, Winterale, Scotch ale, Heavy Ales, Stouts, Porters.
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| TCLH1 Swallowtail || Swallowtail butterfly, Texas || 76-81 || Med/Low || 69-75 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces cerevisiae'']]. POF+.
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| TCL38 El Monte Manor || San Antonio, Texas || 87-92 || Med || 66-72 || STA1 negative and POF+ strain of ''S. cerevisiae''. Suggested Use: IPA, Belgian Saison, Brett Saison, Nordic Ales, Altbier, Tripel, Belgian Blonde.
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| TCLJ1 Cenote Sac Actun || Cenote Sac Actun (fresh water cave), Texas || 89-94 || Med || 68-72 || Determined to be a [[Saccharomyces#Diastatic_strains_of_Saccharomyces_cerevisiae|diastatic strain of ''Saccharomyces cerevisiae'']]. POF+. Suggested Use: East Coast IPA, New England IPA, English Ales, Irish Red Ale, Brown Ales.
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