Assertion: sourdough | /r/HasProperty | propagated for over 150 years
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text: In San Francisco, still nowadays, bakeries claim to use sourdough that has been propagated for over 150 years, harboring Kazachstania exigua as the predominant yeast, instead of the brewer’s yeast, while Lactobacillus sanfranciscensis was isolated from San Francisco sourdough (Cappelle et al., 2013).