• List of Articles Geraniol

      • Open Access Article

        1 - Rosa damascena essential oils: a brief review about chemical composition and biological properties
        Hristina Nunes Maria Graca Miguel
      • Open Access Article

        2 - Assessment Effects of Different Level of Amino Acid and Seaweed Extract on Growth Traits and Essence Components of Sweet Scented Geranium (Pelargonium graveolens L.)
        Shabnam Roshani Hossein Ali Asadi-Gharneh
      • Open Access Article

        3 - Effect of Arbuscular Mycorrhiza Inoculation on Nutrient Uptake and Essential Oil Composition of Dragonhead (Dracocphalum moldavica L.) under Drought Stress
        Gobad Salimi Mohammad Feizian Naser Aliasgharzad
        To study essential oil components of Dracocephalum moldavica in response to mycorrhiza fungus inoculation under drought stress condition, a factorial experiment based on completely randomized design with three replications was carried out under greenhouse condition. The More
        To study essential oil components of Dracocephalum moldavica in response to mycorrhiza fungus inoculation under drought stress condition, a factorial experiment based on completely randomized design with three replications was carried out under greenhouse condition. The factors of the experiment were three levels of drought stresses [control, 0.75 maximum allowable depletion (MAD) and 0.5 MAD] and inoculation with mycorrhiza fungi in two levels (no mycorrhiza inoculation as control and Glomus verciforme inoculation). Essential oil components were recognized via gas chromatography (GC) and gas chromatography-mass spectrometric (GC/MS). The result showed that about 36 components in D. moldavica were identified through inoculation with mycorrhiza under drought stress. Concentration of 13 compounds of these were higher than the rest. Compositions of geranial (18.3%), geraniol (30.98%), geranyl acetate (26.78%) and neral (11.94%) had high quantities in essential oil. Drought stress and mycorrhiza inoculation increased the percentage of major essential oil components. The highest essential oil percentage (1.24%) was obtained by mycorrhiza inoculation treatment and drought stress at 0.75 MAD. Drought stress reduced the uptake of nitrogen, phosphorus and potassium elements, while mycorrhiza inoculation increased their uptake. The highest uptake of potassium was in non-stress and mycorrhiza inoculation conditions. It can be concluded that mycorrhiza inoculation under drought stress increased the uptake of nutrients and essential oil composition of dragonhead. Manuscript profile
      • Open Access Article

        4 - Evaluation of the foliar application effect on the chemical compositions of Rosa damascene Mill. essential oil of Chaharmahal va Bakhtiari province
        Shahram Rajabzadeh Prof. Abdollah Ghasemi Pirbalouti Mehrab Yadegari Touraj Rahimi
        Essential oil is one of the most important natural products of damask rose petals (Rosa damascena Mill.). The presence of higher concentrations of aromatic compounds (β-citronellol and geraniol) in the damask rose essential oil indicates an important quality and st More
        Essential oil is one of the most important natural products of damask rose petals (Rosa damascena Mill.). The presence of higher concentrations of aromatic compounds (β-citronellol and geraniol) in the damask rose essential oil indicates an important quality and standard indicator that foliar spraying may be effective in promoting this effective substance. The aim of this study was to evaluate the effect of alcoholic and ketone foliar application on the chemical composition of R. damascena essential oil during 2017-2018 and 2018-2019 in a completely randomized design in a rose garden located in the south of Shahrekord, southwestern Iran. The essential oil obtained by hydro-distillation was analyzed using GC/MS. In this regard, 29 compounds were identified in the essential oil, the most important of which were β-citronellol and geraniol (alcoholic monoterpenes) and henicosan and nonadcan (alkane hydrocarbons). The results indicated that the best foliar treatment was 20% ethanol solution during two experimental years; the highest levels of β-citronellol (33%) and geraniol (18%) were obtained from the ethanol spraying (at 20%) compared to other treatments and controls. In addition, this treatment was at the lowest level in terms of the concentration of alkane hydrocarbons in essential oil as a negative indicator of aromatic compounds of the rose essential oil. The acetone foliar spraying had the highest amount of alkane hydrocarbons and the lowest percentage of aromatic compounds compared to control and other treatments. In correlation's Pearson coefficients analysis, the highest significant positive correlation was obtained between aromatic compounds (alcoholic monoterpenes) with each other and between alkane hydrocarbons, meanwhile negative and significant relationships were observed between these two groups of important compounds in the rose essential oil. Finally, it is suggested that to obtain the highest quality of the R. damascena essential oil under similar climatic conditions (cold and semi-arid), the ethanol foliar application with a concentration of 20% can be useful. Manuscript profile
      • Open Access Article

        5 - Essential oil composition and antimicrobial activity of arial parts of Lippia citriodora H.B.K from Khuzestan at two phases: before and after blooming
        Zahra Zare
        Lippia citriodora H.B.K. is belongs to Verbenaceae family, which has imported to Iran for food and drug consumptions, and today it is cultivating in different parts of the country. In this study the essential oil composition and antimicrobial activity of Lippia citriodo More
        Lippia citriodora H.B.K. is belongs to Verbenaceae family, which has imported to Iran for food and drug consumptions, and today it is cultivating in different parts of the country. In this study the essential oil composition and antimicrobial activity of Lippia citriodora methanolic extracts have been studied before and after blooming. The arial parts of the plant before and after blooming were collected from the field in Khuzestan in June 2011. And were dried in laboratory conditions. The Essential oils were isolated by hydro distillation (Clevenger apparatus) and were analyzed by using (GC) and (GC - MS). The methanolic extracts were obtained by percolation method. and the antimicrobial activity of the plant extracts was measured by disk diffusion method and minimum inhibitory concentration against four Gram- positive bacteria, four gram- negative bacteria and two fungi. The main essential oil compounds of arial parts of the plant before blooming were Geraniol (35/78%) and Zingiberene (19/9%) and the main essential oil compounds of arial parts after blooming were Davanone (36/4%) and p-Cymene (16/5%). Both extracts showed significant antimicrobial activity. The antifungal activity of the extracts was more than antibacterial activity. Gram- positive bacteria was more sensitive than Gram- negative bacteria. In addition, while concentrations of the extracts were increasing, the antimicrobial activities were increased in all microorganisms. There was no significant difference between amount of antimicrobial activity of extracts before and after blooming. Manuscript profile
      • Open Access Article

        6 - The Effects of Geraniol and Exercise on Memory and Learning in Male NMRI Alzheimer’s Rats
        Bahareh Seifi Nahavandi Parichehr Yaghmaee Shahin Ahmadian Maryam Ghobeh Azadeh Ebrahim-Habibi
        Alzheimer’s disease is one of the most important neurodegenerative diseases occurring after the production of free radicals and inflammatory factors. Geraniol, which is a natural monoterpene, contains antioxidant and anti-inflammatory effects. The aim of this stud More
        Alzheimer’s disease is one of the most important neurodegenerative diseases occurring after the production of free radicals and inflammatory factors. Geraniol, which is a natural monoterpene, contains antioxidant and anti-inflammatory effects. The aim of this study was to investigate the effects of Geraniol and exercise on memory and learning, SOD activity and MDA serum level, neurogenesis and amyloid plaque count in Alzheimer’s Wistar rats. To create the Alzheimer's disease model, Aβ 1-42 was injected bilaterally into the hippocampus of male rats. Grouping included control (-), control (+), exercise, Alzheimer, Alzheimer + exercise, Alzheimer + Geraniol, and Alzheimer + Geraniol + exercise. The results showed that SOD activity and MDA serum level were significantly increased in the Alzheimer + Geraniol, Alzheimer + exercise, and Alzheimer + Geraniol + exercise groups compared to other groups (P<0.001). In addition, shuttle box behavioral test demonstrated that the entry time to the dark box was notably increased in Alzheimer + Geraniol and Alzheimer + Geraniol + exercise groups compared to Alzheimer and Alzheimer + exercise groups (P<0.001). Moreover, neurogenesis was remarkably increased in Alzheimer + Geraniol and Alzheimer + Geraniol + exercise groups compared to Alzheimer and Alzheimer + exercise groups (P<0.001). Besides, the number of amyloid plaques was decreased Alzheimer + Geraniol and Alzheimer + Geraniol + exercise groups compared to other groups (P<0.001). Based on the results of this study, it seems that this compound along with exercise is notably capable of improving complications in memory, SOD activity, MDA serum level, and neurogenesis as well as amyloid plaques in Alzheimer’s disease. Manuscript profile
      • Open Access Article

        7 - Investigation the effect of chitosan foliar application on yield and qualitative traits of Lemon balm (Melissa officinalis L.)
        A. Naeimi far L. Pourhosseini M.N. Ilkaee R. Kalhor Monfared
         Biological stimulants can play an important role in increasing the essential oil of medicinalplants, through positive effects on growth and effective substances. In this research, the effectof chitosan foliar application as a biological stimulus on the quantitativ More
         Biological stimulants can play an important role in increasing the essential oil of medicinalplants, through positive effects on growth and effective substances. In this research, the effectof chitosan foliar application as a biological stimulus on the quantitative and qualitative traitsof Lemon balm (Melissa officinalis L.) was investigated. This research was carried out in 2017in the greenhouse of Islamic Azad University, Karaj branch, in three replications. Theexperimental treatments included: chitosan at 4 levels, zero (control), 0.5, 1, 1.5 and 2 gramsper liter. The results show that the effects of chitosan on morphological traits including thelength of the main stem, the number of secondary stems, the diameter of the main stem, thelength of the main root, the dry weight of the stem and root, as well as chlorophyll a andchlorophyll b were significant. The maximum mentioned traits were obtained in the treatmentof 1.5 grams per liter of chitosan. The maximum percentage of essential oil was obtained in thetreatment of 2 g/l and the maximum percentage of geraniol and geranial were obtained inconcentration of 1 g/L  Manuscript profile