Volatile compounds in distillates and hexane extracts from the flowers of Philadelphus coronarius and Jasminum officinale

Jasminum L. of the Oleaceae family is a genus of plants cultivated for its aromatic flowers, which are a source of essential oil (EO). In temperate countries, jasmine, or pseudo jasmine, is often called Philadelphus coronarius L. of the Hydrangeáceae or Philadelphaceae family due to its similar fragrance. The aim. The aim of the study was to compare the component composition of volatile compounds of hydrodistillates and hexane extracts from flowers of Philadelphus coronarius L. and Jasminum officinale L.. Materials and Methods. Hydrodistillates obtained from dried flowers of J. officinale and from dried and fresh flowers of P. coronarius, as well as hexane extracts from similar raw materials, were analyzed by GC-MS. Research results. 109 compounds were identified. It was found that in the EO of J. officinale, obtained by hydrodistillation, the terpenoid content is 90.31 %, while in the hexane extract of the same raw material, the terpenoid content is only 36.24 %. In the EO of P. coronarius, obtained by hydrodistillation of dry flowers, the terpenoid content is 50.04 %, and from fresh flowers – 45.13 %. In the hexane extract of dry flowers of P. coronarius, the terpenoid content is only 14.63 %, while in the extract of fresh flowers – 52.55 %. In the EO of J. officinale obtained by hydrodistillation, the dominant components are (E)-geranyl linalool (12.86 %), linalool (10.72 %), (Z)-3-hexen-1-ol benzoate (7.82 %), α-farnesene (7.72 %), D-limonene (6.43 %), methyl anthranilate (5.9 %), (Z)-9-tricosene (4.15 %). In the EO obtained by hydrodistillation from dried flowers of P. coronarius, the dominant components are (1R)-(-)-myrtenal (12.73 %), myrtanal (11.09 %), pentadecanal (9.42 %), tricosane (8.33 %), (Z)-jasmone (7.09 %). In the EO, it is obtained by hydrodistillation from fresh P. coronarius flowers, the dominant components are: nerolidol (19.42 %), ethyl palmitate (19.13 %), methyl 2-methylpalmitate (16.44 %), myrtanal (9.91 %), pentadecanal (5.28 %), (Z)-jasmone (2.72 %). Conclusions. The conducted studies identified the main differences in volatile compounds in distillates and hexane extracts of P. coronarius and J. officinale. A total of 109 compounds were identified in the objects, and the dominant components were established. During the drying process of P. coronarius flowers, the composition of the EO significantly changes. Only hexane extracts from dried flowers of J. officinale and P. coronarius contain triterpene squalene in significant amounts (13.96 % and 6.72 %). Common to the hexane extracts of the studied objects are aromatic compounds: benzyl alcohol, 2,4-di-tert-butylphenol; aliphatic compounds: 2,4-dimethyl-heptane, octanal, decanal