Chemotypical diversity of Mentha longifolia L. oil

Abstract

The article presents data on the content and composition of the essential oil of Mentha longifolia (L.) L. plants growing in natural phytocenoses on the territory of Crimea and Abkhazia. It was found that dry raw materials in two samples from natural phytocenoses of Crimea contain 1.27 and 1.76% of essential oil per wet weight, three samples from phytocenoses of Abkhazia contain less essential oil - 0.68, 0.98 and 1.19 %. About 60 components have been identified. Two new chemotypes were identified for Crimea: carvone-piperitone (mass fraction of carvone is 66.65%, piperitone oxide - 14.37%) and piperitone-sabinene (mass fraction of piperitone oxide - 55.19% and cis-sabinene hydrate - 23.51%), and two for Abkhazia: terpene-caryophyllene (α-terpinyl acetate - 51.48%;  β-caryophyllene - 9.26%), piperitone-non-petalactone (piperitone oxide - 46.29%;  nepetalactone 4aa, 7a, 7aa - 34.85%). These Mentha longifolia chemotypes are promising for use in the food, chemical, pharmaceutical and perfume industries.