Stamen Grigorov – who discovered the Lactobacillus bulgaricus bacillus

Date: October 27, 2020 Posted by: Rohit Gupta In: Google Doodle

Stamen Grigorov – Google Doodle celebrates 142nd Birthday who discovered the Lactobacillus bulgaricus bacillus.




Today the search engine Google has shared an interactive google doodle celebrating Dr. Stamen Grigorov’s 142nd Birthday, was a prominent Bulgarian physician and microbiologist. He discovered the Lactobacillus bulgaricus bacillus, which is the true cause for the existence of natural yogurt.

Stamen Grigorov

Stamen Grigorov (Стамен Григоров) Biography

  • Born: October 27, 1878, Principality of Bulgaria
  • Died: October 27, 1945, Sofia, Bulgaria
  • Education: University of Montpellier, University of Geneva
  • Awards: Order of Bravery
  • Fields: Microbiology, Medicine

Bulgarian physician Стамен Григоров Known for Anti-tuberculosis vaccine and Lactobacillus bulgaricus

Scientific career
Fields Microbiology, medicine

Stamen Grigorov was born on this day in 1878 in the village of Studen Izvor, located in the Trun region of western Bulgaria.

He completed his secondary education in natural sciences in Montpellier, France and medical science in Geneva, Switzerland. In 1905, at the age of 27, Dr. Grigorov made the discovery, for which he is best known. In the microbiological laboratory of Professor Léon Massol in Geneva, he discovered that a certain strain of bacillus is the true cause for the existence of natural yogurt.

Stamen Grigorov

His further research carried out in many institutes worldwide proved that Bulgarian yogurt helps in the treatment of various diseases and conditions like infections, otic-rhino-laryngeal diseases, tuberculosis, stomach and intestine conditions, ulcers, some gynecologic diseases, fatigue, etc. These prophylactic and curative properties of Bulgarian yogurt are due to the rich vitamin content including B1, B2, C, A, D, E, PP, B12, as well as lactose, proteins, and other important stimulating substances.




Запален по науката от малък, той продължава да печели докторска степен в Медицинския университет в Женева, Швейцария. След брака си през 1904 г. Григоров се завръща в университета, за да работи като научен сътрудник.

As a recap of home, Grigorov’s wife gifted him with some Bulgarian cooking staples, counting yogurt. Intrigued by yogurt’s reputed health benefits, Grigorov decided to inspect it under a microscope.Following thousands of experiments, in 1905 he finally found what he was looking for: the rod-shaped microorganism that causes yogurt’s fermentation. The bacterium was later renamed Lactobacillus bulgaricus in honor of Grigorov’s home country.

След хиляди експерименти, през 1905 г. той най-накрая намери това, което търси: пръчковидният микроорганизъм, който предизвиква ферментацията на киселото мляко. По-късно бактерията е преименувана на Lactobacillus bulgaricus в чест на родината на Григоров.

In honor of Grigorov’s legacy, his home village of Studen Izvor today houses one of the world’s only museums of yogurt.

Честит Рожден ден, Dr. Grigorov!

Read more about Stamen Grigorov on wiki 



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