The effect of methyl jasmonate and TiO۲ nanoparticles on phenolic and terpenoides compounds in peppermint (Mentha piperita L.)

Mentha piperita L., as a rich source of phenolic acids and essential oils, is known for its medicinal importance. This study aimed to investigate the effects of different concentrations of methyl jasmonate (MeJA) (۰, ۰.۱, and ۰.۵ mM) and TiO۲ nanoparticles (TiO۲ NPs) application including ۰, and ۱۵۰ mg L-۱ on phenolic compounds and essential oil (EO) of Mentha piperita L. The results showed that phenolic content (۷۶%), rosmarinic acid content (۸۷%) and caffeic acid content (۷۸%) were improved by simultaneous application of MeJA (۰.۱ mM) and TiO۲ NPs (۱۵۰ mg L-۱) compared to control. The highest menthol production (۴۴.۵۱%) was belong to exogenous application of ۰.۱ mM MeJA when TiO۲ NPs application was ۱۵۰ mg L-۱. This research enabled us to introduce an ideal combination of plant growth regulators (MeJA) and TiO۲ NPs application for increasing major components of essential oils in peppermint.

کلیدواژه ها:

Caffeic acid ، Essential oil ، Menthol ، Rosmarinic acid