COMPONENT COMPOSITION AND ANTIMICROBIAL ACTIVITY OF THE VOLATILE SUBSTANCE FRACTION OF PRUNUS CERASUS L. (ROSACEAE), CULTIVATED IN UZBEKISTAN

The component composition of the essential oil isolated by hydrodistillation from the leaves and flower petals of Prunus cerasus from two places of growth in the Ferghana region: Tashlak and Altiaryk districts has been studied. Chromatography-mass spectral analysis of essential oil was used to identify: for Tashlak samples – 48 compounds in flowers (sample 1), which is 92.89% of the total amount of oil, 59 substances (93.07%) in leaves (sample 2); for Altiaryk samples – in flowers (sample 3) 33 compounds (88.05%), 57 compounds (79.44%) in leaves (sample 4). In the composition of the essential oil of sample 1, the predominant components are 4-ethenyl-2-methoxyphenol – 27.75%, 4-vinylphenol – 17.86%, furfural – 9.23%, 5-methylfurfural – 7.69%, 2-acetylpyrrol – 4.52%, furfuryl alcohol – 2.15%, Nonanoic acid – 1.86%. In sample 2, the following predominate: herniarin (7-methoxycoumarin) – 38.06%, coumarin – 28.53%, eugenol – 4.74%, hexadecanoic acid – 2.53%. In sample 3 – the highest content: 4-ethenyl-2-methoxyphenol – 17.90%, 4-vinylphenol – 16.59%, isomeric lilac alcohols: lilac alcohol D – 9.05%, lilac alcohol C – 8.79%, lilac alcohol B – 1.42%, tricosane – 4.25%, nonanoic acid – 3.88%, nonanol – 1.97%, estragole – 3.86%. Sample 4 mainly contains: herniarin – 29.39%, coumarin – 10.04%, eugenol – 6.56%, dihydrocoumarin – 5.04, hexadecanoic acid – 4.13%, terpinolene – 3.52%, phytol – 3.41%. The observed significant differences between the studied samples, as well as with related samples from other habitats, are discussed.