Career
His research started with work on the phosphorylation of hexoses in 1924. He was able to show that phosphorylation is the first step in many fermentation reactions, which was the foundation of the Embden–Meyerhof pathway.
In 1925 his interests shifted to the nitrogen-fixing bacteria in the root nodules of leguminous plants. The improved methods of butter preservation, by adding disodium phosphate to prevent acidic hydrolysis. This method was in use for several decades in Finland. His research from 1925 till 1932 included the invention of a fodder preservation method (AIV Fodder). The method, patented in 1932, was basically a kind of silage that improved the storage of green fodder, which is important during long winters. The process includes adding dilute hydrochloric or sulfuric acid to newly stored grain. Increased acidity stops harmful fermentation and has no adverse effect on the nutritive value of the fodder or the animals it is fed to. In 1945, Virtanen received the Nobel Prize in chemistry "for his research and inventions in agricultural and nutrition chemistry".
His later years studies included the development of partially synthetic cattle feeds. The nitrogen for the synthesis of amino acids normally comes from proteins in the fodder. A special bacterial environment in the rumen of cattle allows to use urea and ammonium salts as source for the nitrogen instead of plant proteins like soybean or meat and bone meal. He also headed the Valio Laboratory from 1921–1969.
Read more about this topic: Artturi Ilmari Virtanen
Famous quotes containing the word career:
“Work-family conflicts—the trade-offs of your money or your life, your job or your child—would not be forced upon women with such sanguine disregard if men experienced the same career stalls caused by the-buck-stops-here responsibility for children.”
—Letty Cottin Pogrebin (20th century)
“Whether lawyer, politician or executive, the American who knows what’s good for his career seeks an institutional rather than an individual identity. He becomes the man from NBC or IBM. The institutional imprint furnishes him with pension, meaning, proofs of existence. A man without a company name is a man without a country.”
—Lewis H. Lapham (b. 1935)
“What exacerbates the strain in the working class is the absence of money to pay for services they need, economic insecurity, poor daycare, and lack of dignity and boredom in each partner’s job. What exacerbates it in upper-middle class is the instability of paid help and the enormous demands of the career system in which both partners become willing believers. But the tug between traditional and egalitarian models of marriage runs from top to bottom of the class ladder.”
—Arlie Hochschild (20th century)