P151 determination of organochlorine pesticides in the essential oils of Mentha x Piperita L. and Mentha Arvensis L. Var. Piperascens Holmes ex Christy

According to recent studies, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) have shown a good antimicrobial and antifungal activity. Their association with essential oils (EOs) could be useful for the treatment of infections caused by Candida spp. The aim of this studyis to evaluate the synergistic antifungal activity of new combinations between Diclofenac Sodium Salt (DSS), a widely used NSAID, with EOs of Mentha x piperita, Pelargonium graveolens and Melaleuca alternifolia. The in-vitroantifungal activity was determined on different Candida strains. The determination of the chemical composition of EOs was carried out by gaschromatography-massspectrometry (GC-MS). Susceptibility testing of planktonic cells was performed by using the broth microdilution assay and checkerboard methods. Minimum Inhibitory Concentrations (MIC) of DSS was in a range from 1.02 to 2.05 mg/mL reaching a MIC value of 0.05 mg/mL when combined with Pelargonium graveolens (FICI= 0.23–0.35) or Menthapiperita (FICI= 0.22–0.30) EOs. These preliminary results show thatthe combination of the EOs with DSS improves the antifungal activity on all the tested Candida strains.

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Effect of Heat Stress on Yield, Monoterpene Content and Antibacterial Activity of Essential Oils of Mentha x piperita var. Mitcham and Mentha arvensis var. piperascens

Molecules ◽

10.3390/molecules23081903 ◽

2018 ◽

Vol 23 (8) ◽

pp. 1903 ◽

Cited By ~ 14

Author(s):

Milad Heydari ◽

Anna Zanfardino ◽

Alireza Taleei ◽

Ali Akbar Shahnejat Bushehri ◽

Javad Hadian ◽

...

Keyword(s):

Antibacterial Activity ◽

Heat Stress ◽

Essential Oils ◽

Mentha Arvensis ◽

Electron Transmission ◽

Mentha X Piperita ◽

Induced Stress ◽

Japanese Mint ◽

Growth Chambers ◽

Shed Light

Heat stress affects the yield of medicinal plants and can reduce biomass and/or metabolite production. In order to evaluate the effect of heat-induced stress on the essential oil production in Mentha x piperita L. var. Mitcham (Mitcham mint) and Mentha arvensis var. piperascens Malinv. ex L. H. Bailey (Japanese mint), we studied the chemical composition of the oils of the two mint species under different heat shock stresses in growth chambers. The antibacterial activity of the essential oils was also evaluated; microscopic observation (fluorescence and electron transmission) was used to assess the effect of the tested samples on bacterial growth. The results obtained shed light on the mint essential oils composition and biological activity in relation to heat stress.

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Effect of Heat Stress on Yield, Monoterpene Content and Antibacterial Activity of Essential Oils of Mentha X Piperita Var. Mitcham and Mentha Arvensis Var. Piperascens

10.20944/preprints201807.0542.v1 ◽

2018 ◽

Author(s):

Milad Heydari ◽

Anna Zanfardino ◽

Alireza Taleei ◽

Ali Akbar Shah-NejatBoushehri ◽

Javad Hadian ◽

...

Keyword(s):

Antibacterial Activity ◽

Heat Stress ◽

Essential Oils ◽

Mentha Arvensis ◽

Electron Transmission ◽

Heat Shock Stress ◽

Mentha X Piperita ◽

Induced Stress ◽

Japanese Mint ◽

Shed Light

Heat stress affects the yield of medicinal plants and can reduce biomass and/or metabolite production. In order to evaluate the effect of heat-induced stress on the essential oil production in Mentha x piperita L. var. Mitcham (Mitcham mint) and Mentha x arvensis var. piperascens Malinv. ex L. H. Bailey (Japanese mint), we studied the chemical composition of the oils of the two mint species under different heat shock stress in growth chambers. The antibacterial activity of the essential oils was also evaluated; microscopic observation (fluorescence and electron transmission) was used to assess the effect of the tested samples on bacterial growth. The results obtained shed light on the mint essential oils composition and biological activity in relation to heat stress.

Download Full-text