2001/11/21 by Ziya Günata, Jérémie Wirth, Wenfei Guo +1 · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Fermentation and Sensory Analysis #Horticultural and Viticultural Research #Plant biochemistry and biosynthesis
paper · doi:10.1021/bk-2002-0802.ch018
openalex publication_date 2001/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
C 13 -norisoprenoid glycoconjugates from Muscat of Alexandria and Shiraz leaves and grape berries isolated through adsorption on Amberlite XAD-2 resin were subjected to enzymatic hydrolysis and the released aglycons were analyzed by GC-MS. C 13 -norisoprenoids were more abundant in the leaves than in the berries. Differences were observed with regard to the C 13 -norisoprenoid pattern between leaves and berries. 3-Hydroxy-β-damascone, a major aglycon of grape berry C 13 -norisoprenoid glycosides, was not detected in the leaves. Compositional differences were also observed between Muscat and Shiraz leaves. 3-Oxo-α-ionol, and its retro derivatives were more abundant in Muscat than in Shiraz leaves. Conversely, Shiraz leaves were richer in 7,8-dihydroionone derivatives, such as megastigmane-3,9-diol and 3-oxo-7,8-dihydro-α-ionol.