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Volatile Compounds of Hemicryptophytes - Veronica montana L

Forty species of Veronica L. (Plantaginaceae) genus have been described in Croatia, of which 8 species belong to Central European hemicryptophytes: V. aphylla L., V. austriaca L. ssp. austriaca, V. paniculata L., V. saturejoides Vis. ssp. saturejoides, V. scardica Griseb., V. teucrium L. ssp. crinita (Kit.) Velen., V. teucrium L. ssp. pseudochamaedrys (Jacq.) Nyman and investigated species V. montana L.. Species V. montana was collected from Tisovac near Crni Lug in Gorski kotar (Croatia), in the July 2016. Water distilled volatile compounds (VC) from aerial parts of investigated plant have been analyzed by GC and GC/MS (Adams, 2007) using VF-5ms capillary column and the peaks appear from 18 to 65 minutes. The total yield of VC was 0.1%, based on dry weight of samples. Fifteen compounds were determined representing 89.9% of the total VC, which are characterized by a high concentration of oleic acid (43.8%), hexadecanoic acid (30.9%) and with two sesquiterpene hydrocarbons, caryophylene oxide (7.2%) and germacrene D (5.2%). According to a literature review GC-MS studies have been performed only on Veronica thymoides subsp. pseudocinerea and the most abundant constituent was hexatriacontene (21%) (Ertas et al., 2015). In our previous research in the oil of V. spicata the one of most abundant hydrocarbons compound was heptacosane (Dunkić et al., 2015). The present study gives additional knowledge about secondary metabolites of the genus Veronica.

Veronica montana, volatile compounds, oleic acid, hexadecanoic acid

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