sentences:  After a number of operations he obtained a crystallized white matter, which he and Vauquelin tried to characterize in 1806 as day by day their attempts found it to be some kind of new "chemical principle" with hitherto unknown properties, nothing like well known mineral salts classically obtained in the 18th century.Duly convinced this is something completely new, they call this matter "asparagin", after the asparagus plant they extracted it from.Asparagine will turn out to be one of the 22 amino acids that build-up all living matter on earth, the first ever identified and understood as belonging to a new class of molecules.