Emil Christian Hansen, Danish physiologist and mycologist (b. 1842)
Emil Christian Hansen (8 May 1842 – 27 August 1909) was a Danish mycologist and fermentation physiologist.
Born in Ribe, he financed his education by writing novels. He was awarded a gold medal in 1876 for an essay on fungi, titled De danske Gjødningssvampe. During his days as a university student in Copenhagen, he worked as an unpaid assistant to zoologist Japetus Steenstrup (1813–1897). In 1876, with Alfred Jørgensen (1848–1925), he published a Danish translation of Charles Darwin’s "The Voyage of the Beagle"; Rejse om Jorden. From 1879 to 1909, he was director of the physiological department at Carlsberg Laboratory.Hired by the Carlsberg Laboratory in Copenhagen in 1879, he became the first to isolate a pure cell of yeast in 1883, and after combining it with a sugary solution, produced more yeast than was in a yeast bank. It was named as Saccharomyces carlsbergensis after the laboratory, and is the yeast from which are derived, all yeasts used in lager beers. See Fermentation, Yeast.
Hansen is the taxonomic authority of the fungal genus Anixiopsis (1897) from the family Onygenaceae.He was honoured in 1911, when botanist H. Zikes published Hanseniaspora, which is a genus of yeasts.
1909Aug, 27
Emil Christian Hansen
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Events on 1909
- 9Jan
Nimrod Expedition
Ernest Shackleton, leading the Nimrod Expedition to the South Pole, plants the British flag 97 nautical miles (180 km; 112 mi) from the South Pole, the farthest anyone had ever reached at that time. - 28Jan
Guantanamo Bay Naval Base
United States troops leave Cuba with the exception of Guantanamo Bay Naval Base after being there since the Spanish-American War. - 22Feb
Great White Fleet
The sixteen battleships of the Great White Fleet, led by USS Connecticut, return to the United States after a voyage around the world. - 31Mar
Bosnia and Herzegovina
Serbia accepts Austrian control over Bosnia and Herzegovina. - 27Apr
Abdul Hamid II
Sultan of Ottoman Empire Abdul Hamid II is overthrown, and is succeeded by his brother, Mehmed V.