Characterization and quantitation of hexadecyl, octadecyl, and eicosyl esters of p-coumaric acid in the vine and root latex of sweetpotato [Ipomoea batatas (L.) Lam.]. - Snook ,M.E,.; Data ,E.S,.; Kays ,S.J.. (J. Agric. Food Chem., 1994)