Stashenko is the director of the National Research Center for the Agroindustrialization of Tropical Medicinal and Aromatic Plants, CENIVAM. She has directed the research work of more than 300 new professionals in Chemistry, at undergraduate and graduate levels, which have been the basis for her publication of over 250 scientific articles. She has coauthored 11 patents. Research topics include the application of chromatographic and mass spectrometric techniques to the study of secondary metabolites from aromatic plants, to the determination of pesticide residues in various materials, and to petrochemistry and organic geochemistry. Stashenko founded the National School on Chromatography where she has taught over 150 specialized courses on separation sciences to practicing professionals from research labs and industry.