Stas-·Ot·to meth·od(shtaz ot'ō),
a method of extraction of alkaloids from plants and animal bodies: the substance is digested in alcohol and tartaric acid, the fatty and resinous matters are precipitated with water, the fluid is made alkaline, and the alkaloids are extracted with ether or chloroform.
[Jean-Servais Stas, Friedrich Julius Otto]
Stas,Jean-Servais, Belgian chemist, 1813-1891.
Stas-Otto method - used for extraction of alkaloids from plants and animal bodies.