Stamen Grigorov (1878<unk>1945), oo ahaa arday Bulgaari ah oo wax ka bartay Geneva, ayaa markii ugu horreysay baaray microflora ee yogurt-ka Bulgaariya. 1905kii, wuxuu ku tilmaamay inuu ka kooban yahay bakteeriyada ku samaysan aashitada caanaha ee loo yaqaan'spherical and rod-like lactic acid-producing bacteria'. 1907kii, bakteeriyada ku samaysan caanaha ayaa loo yaqaanay Bacillus bulgaricus (hadda Lactobacillus delbrueckii subsp. bulgaricus). Ruushka Nobel laureate iyo bayoolajiga Ilya Mechnikov, oo ka tirsan machadka Institut Pasteur ee Paris, waxaa saameeyay shaqada Grigorov wuxuuna soo jeediyay mala-awaal ah in cunista joogtada ah ee yogurt ay mas'uul ka ahayd caafimaadka Bulgaariyaanka.
Bacillus bulgaricus