Viburnum tinus L. investigation on its spontaneous emission at duifferent fenological stages

The volatile components emitted from different organs of Viburnum tinus L., collected during various develop- mental stages, were analysed by solid phase micro extraction (SPME) and identified by GC-MS. More than 90% of the identified fraction was represented by non-terpenes in both young and adult leaves (94.2% and 94.3%, respectively), as well as in fruits of different ages: unripe and ripe (red and black) (93.1%, 90.6% and 90.9%, respectively). This latter class was also the predominant one in Viburnum crushed fruits (pericarp and seeds), even though with low amount (67.0%). (Z)-3-hexanol acetate was the main compound in all the leaf samples and red fruits, while apiol (40.9%) was the most abundant in unripe fruits and (E)-2-hexen-1-ol (52.8%) in black ripe fruits. On the contrary, the crushed fruits were characterized by decanal (12.0%) and n-hexanol (8.2%). Bud and flower emissions highlighted a good percentage of oxygenated monoterpenes (80.0% and 75.0%, respectively) mainly represented by (E)-β-ocimene (76.5% and 72.1%, respectively). The stem composition was characterized by non-terpenes (34.6%) followed by sesquiterpene hydrocarbons (29.0%) and oxygenated monoterpenes (17.6%)