2-EXO-HYDROXY-1,8-CINEOLE - A NEW COMPONENT FROM GRAPE VAR SAUVIGNON

2-exo-Hydroxy-l, 8-cineole is being reported in grape for the first time. It was extracted from var. Sauvignon must according to classical retention by XAD-2 organic resin. Identification was achieved by positive comparison of mass spectral and infrared spectral data and retention indexes on two gas chromatographic columns (polar CWAX20M and nonpolar OV-1) of the natural component with those of the corresponding synthesized compound. Possible breakdown of 2-exo-hydroxy-1,8-cineole following thermal treatment or fermentation in synthetic and neutral musts was investigated. Results of both investigations account for the chemical and biological stabilities of this new grape component. © 1990, American Chemical Society. All rights reserved.