In the 1937 chemistry professor A. H. Robinson and graduate student William Morgan developed a process for denicotinizing tobacco that did not substantially change the tobacco’s aroma and color and allowed for recovery of the nicotine. Levels of nicotine in Burley tobacco were reduced from 3.51 to 1.04. The recovered nicotine was to be used as a pesticide. Morgan eventually patented the process, but it had no success financially.