B. C. P. Jansen (1 April 1884,

Zwolle Zwolle () is a city and municipality in the Northeastern Netherlands. It is the capital of the province of Overijssel and the province's second-largest municipality after Enschede with a population of 130,592 as of 1 December 2021. Zwolle is o ...

– 18 October 1962) was a Dutch chemist and biochemist. In the Dutch Indies, with his colleague W. F. Donath, he isolated in crystalline form an anti-beriberi factor (known as vitamine B1 or aneurin) from rice polishings and named it

thiamine Thiamine, also known as thiamin and vitamin B1, is a vitamin, an essential micronutrient, that cannot be made in the body. It is found in food and commercially synthesized to be a dietary supplement or medication. Phosphorylated forms of thi ...

(sulfur-containing amine). It was the first vitamine to be obtained in pure form. Jansen was elected a corresponding member of the

Royal Netherlands Academy of Arts and Sciences The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed ...

in 1927, he resigned in 1929. He was re-admitted as member in 1946.

References

;Sources *Rudolph A. Peters
Obituary notice: Professor Dr Chem. Barend Coenraad Petrus Jansen
Br. J. Nutr. (1964), 18, 1. ;Specific {{DEFAULTSORT:Jansen, Barend Coenraad Petrus 1884 births 1962 deaths 20th-century Dutch chemists Dutch biochemists Members of the Royal Netherlands Academy of Arts and Sciences People from Zwolle University of Amsterdam alumni Utrecht University alumni University of Amsterdam faculty