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Kuhn, Richard

(Encyclopedia)Kuhn, Richard rĭkhˈärt ko͞on [key], 1900–1967, Austrian chemist, director of the Kaiser Wilhelm Institute, Heidelberg. For his research on the carotinoids (he prepared eight of them in pure form...

methionine

(Encyclopedia)CE5 methionine mĕthīˈənēn [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the L-stereoisomer appears in mammalian protein. It is one of the several e...

sprue

(Encyclopedia)sprue, chronic disorder of the small intestine caused by impaired absorption of fat and other nutrients. Two forms of the disease exist. Tropical sprue occurs in central and northern South America, As...

Lynen, Feodor

(Encyclopedia)Lynen, Feodor fāōˈdôr lēˈnən [key], 1911–79, German biochemist, grad. Univ. of Munich (Ph.D. 1937). He began teaching at the Max Planck Institute for Cell Chemistry in Munich in 1947. His res...

Virtanen, Artturi Ilmari

(Encyclopedia)Virtanen, Artturi Ilmari, 1895–1973, Finnish chemist, Ph.D. Univ. of Helsinki, 1918. Virtanen was on the faculty at the Univ. of Helsinki from 1924 until his death in 1973. He was awarded the Nobel ...

du Vigneaud, Vincent

(Encyclopedia)du Vigneaud, Vincent dyo͞o vēnˈyō [key], 1901–78, American biochemist, b. Chicago. He was professor of biochemistry and head of the department at George Washington Univ. school of medicine (1932...

mineral, dietary

(Encyclopedia)mineral, dietary, any of a group of inorganic elements that are essential to humans and animals for normal body function. In nutrition, minerals are those elements for which the body's requirement is ...

parsley

(Encyclopedia)parsley, Mediterranean aromatic herb (Petroselinum crispum or Apium petroselinum) of the carrot family, cultivated since the days of the Romans for its foliage, used in cookery as a seasoning and garn...

spinach

(Encyclopedia)spinach, annual plant (Spinacia oleracea) of the family Chenopodiaceae (goosefoot family), probably of Persian origin and known to have been introduced into Europe in the 15th cent. It is valued as a ...

pellagra

(Encyclopedia)pellagra pəlăgˈrə [key], deficiency disease due to a lack of niacin (nicotinic acid), one of the components of the B complex vitamins in the diet. Niacin is plentiful in yeast, organ meats, peanut...