Gerrit Jan Mulder (1802-1880)
Mulder heated a series of albuminous substances (e.g., egg white, blood, milk solids, and plant gluten) with lye, and obtained a product which when neutralized produced a precipitate. Analysis suggested that the same chemical product was always produced, no matter the source. He concluded that this 'root substance' was basic to all living organisms, and named it proteine, derived from a Greek word meaning primary, a term suggested by the Swedish chemist Berzelius. Mulder calculated that protein contained about 16% Nitrogen, a figure still used today.