Stereoisomeric flavor compounds. 33. Multidimensional gas chromatography direct enantiomer separation of .gamma.-lactones from fruits, foods, and beverages

Chiral γ-lactones from the raw flavor extract of strawberries and of some commercially available fruit-containing foods and beverages were directly stereoanalyzed by multidimensional gas chromatography (MDGC), employing heart-cutting techniques from DB 1701 as the preseparation column onto heptakis(3-O-acetyl-2,6-di-O-pentyl)β-cyclodextrin as the chiral stationary phase