scholarly journals 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 ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1903 ◽  
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.

scholarly journals 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

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.

scholarly journals The Variability of Thymol and Carvacrol Contents Reveals the Level of Antibacterial Activity of the Essential Oils from Different Accessions of Oliveria decumbens

Antibiotics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 409
Author(s):  
Tahereh Khoshbakht ◽  
Akbar Karami ◽  
Aminallah Tahmasebi ◽  
Filippo Maggi
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Positive Control ◽  
Mass Spectrometry Analysis ◽  
Human Pathogens ◽  
Clavibacter Michiganensis ◽  
Spectrometry Analysis ◽  
High Level ◽  
Shed Light ◽  
Chromatographic Mass

Oliveria decumbens (Apiaceae) is an aromatic herb traditionally employed in the Persian medicine for the treatment of infectious and gastrointestinal disorders. In the present study, we analyzed the chemical composition of essential oils obtained from different Iranian populations and evaluated their efficacy on a panel of human pathogens (Staphylococcus aureus and Escherichia coli), probiotic (Bacillus subtilis), and phytopathogens (Clavibacter michiganensis, Curtobacterium flaccumfaciens, Xanthomonas citri, and Agrobacterium tumefaciens). The gas chromatographic-mass spectrometry analysis put in evidence four main volatile constituents such as thymol (20.3–36.4%), carvacrol (18.8–33.1%), γ-terpinene (10.6–25.9%), and p-cymene (9.5–17.3%), though with significant variability from an essential oil to another. Notably, the oils from the populations sited in Nourabad Mamasani and Dehdasht showed the highest amount of the phenolic monoterpenes thymol (36.4 and 35.2%, respectively) and carvacrol (33.1 and 30.6%, respectively). The antibacterial activity of O. decumbens essential oils was assessed by the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) methods, showing high activity for the samples from Nourabad Mamasani and Dehdasht populations exhibiting high level of the above phenolics. The obtained MIC and MBC values (mg/ml) were in the ranges 0.0625–2 mg/ml and 1–16 mg/ml, respectively. Noteworthy, in some cases, the antibacterial activity of O. decumbens essential oils was higher than that of chloramphenicol used as positive control. The average MBCs displayed by the O. decumbens samples showed that C. flaccumfaciens had the highest sensitivity to the essential oils. Based on these results, our work shed light on selected O. decumbens populations deserving proper breeding and cultivation strategies in order to warrantee production of bioactive essential oils to be used at pharmaceutical and agricultural level to combat several pathogens.

scholarly journals Salicylic Acid and Melatonin Alleviate the Effects of Heat Stress on Essential Oil Composition and Antioxidant Enzyme Activity in Mentha × Piperita and Mentha Arvensis L.

Antioxidants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 547 ◽  
Author(s):  
Haydari ◽  
Maresca ◽  
Rigano ◽  
Taleei ◽  
Shahnejat Bushehri ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Heat Stress ◽  
Essential Oils ◽  
Essential Oil Composition ◽  
Mentha Piperita ◽  
Oil Composition ◽  
Mentha Arvensis ◽  
Physiological Processes ◽  
Glutathione S Transferases ◽  
Antioxidant Enzymatic Activity

The aim of this study was to evaluate changes in the chemical profile of essential oils and antioxidant enzymes activity (catalase CAT, superoxide dismutase SOD, Glutathione S-transferases GST, and Peroxidase POX) in Mentha × piperita L. (Mitcham variety) and Mentha arvensis L. (var. piperascens), in response to heat stress. In addition, we used salicylic acid (SA) and melatonin (M), two brassinosteroids that play an important role in regulating physiological processes, to assess their potential to mitigate heat stress. In both species, the heat stress caused a variation in the composition of the essential oils and in the antioxidant enzymatic activity. Furthermore both Salicylic acid (SA) and melatonin (M) alleviated the effect of heat stress.

Antibacterial activity comparison of several Portuguese Thymus essential oils

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
SA Dandlen ◽  
AC Figueiredo ◽  
LG Pedro ◽  
JG Barroso ◽  
MG Miguel ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Activity Comparison

Screening of selected essential oils for antibacterial activity in vapour phase

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
L Nedorostova ◽  
P Kloucek ◽  
M Stolcova ◽  
L Kokoska
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Vapour Phase

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

Sign in / Sign up

Export Citation Format

Share Document