scholarly journals ANATOMICAL ASPECTS OF THE STEM AND LEAF OF MENTHA x PIPERITA L. (LAMIACEAE)

2021 ◽  
Vol 10 (19) ◽  
pp. 447-452
Author(s):  
Elena Cristina Ciobanu (Țurlea) ◽  
Elena Săvulescu ◽  
Monica Luminița Badea
Keyword(s):  
Single Layer ◽  
Mevalonic Acid ◽  
Vegetation Period ◽  
Essential Oil Composition ◽  
Point Of View ◽  
Oil Composition ◽  
Mentha X Piperita ◽  
Anatomical Point ◽  
Stems And Leaves ◽  
Acid Pathway

Mentha x piperita (Lamiaceae) has been known since ancient times due to its aromatic and therapeutic properties. The differences in essential oil composition among the members of the genus Mentha offer a diversity of strains with high contents of menthone, menthol, carvone, linalool, or other valued terpenoid components synthesized by the mevalonic acid pathway. The species was analyzed anatomically. As biologic material, stems and leaves have been sampled from crops, during the vegetation period, before blooming. From an anatomical point of view, transverse sections were made through stems and leaves. At the level of the epidermis, both in the stem and in the leaf, the secretory and the tector trichomes were highlighted. The foliar limb is hypostomatic, with stomata in the inferior epidermis, the stomata being of the diacitic type. The mesophilus of the foliar is bifacial, having palisadic tissue with a single layer of cells, located under the superior epidermis and lacunar tissue, located under the inferior epidermis.

scholarly journals Essential Oil Composition of Eryngium Campestre L. Growing in Different Soil Types. A Preliminary Study

2008 ◽  
Vol 3 (7) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Jesús Palá-Paúl ◽  
Jaime Usano-Alemany ◽  
A. Cristina Soria ◽  
M. José Pérez-Alonso ◽  
Joseph J. Brophy
Keyword(s):  
Essential Oil ◽  
Acid Soil ◽  
Essential Oil Composition ◽  
Alkaline Soil ◽  
Oil Composition ◽  
Aerial Parts ◽  
Germacrene D ◽  
Stems And Leaves ◽  
High Concentrations ◽  
Exhaustive Study

The essential oil composition of the aerial parts of four populations of Eryngium campestre has been analyzed by GC and GC/MS. Samples growing in different types of soil were gathered at the same phenological state. A total of 84 compounds have been identified from the different samples under analysis. Qualitative and quantitative differences were found between inflorescences (I) and stems and leaves (SL) of the different populations. The main constituents of the inflorescences were identified as germacrene D (30.3-40.3%), β-curcumene (0.7-22.2%), myrcene (3.0-21.7%) and ( E)-β-farnesene (0.1-19.0%). The type of soil seemed to exert an influence on the chemical composition of the oils of this species. Whereas high concentrations of myrcene were found in the populations growing in acid soil, its concentration was significantly lower in the alkaline populations. β-Curcumene concentration was higher in the populations growing in alkaline soil and was practically absent from the acid soil population. Regarding the stems and leaves, only germacrene D (31.1-42.4%) and myrcene (0.5-23.15) were considered as main constituents, their composition not being affected by the type of soil. However, terpenoid distribution was clearly influenced by the soil, with the population growing in acid soil containing a greater amount of monoterpenes than that of the population growing in alkaline soil. A more exhaustive study needs to be carried out in order to confirm if the biosynthesis of these compounds could be influenced by the availability of Ca2+ in the soil.

scholarly journals Composition of Lavandula angustifolia L. cultivated in Transylvania, Romania

2019 ◽  
Vol 47 (3) ◽  
Author(s):  
Camelia OROIAN ◽  
Antonia ODAGIU ◽  
Csaba Pal RACZ ◽  
Ioan OROIAN ◽  
Iulia C. MUREȘAN ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Point Of View ◽  
Quantitative Composition ◽  
Market Demand ◽  
Oil Composition ◽  
Linalyl Acetate ◽  
Dispersion Parameters ◽  
Lavandula Angustifolia ◽  
And Cluster Analysis

An increasing market demand concerning lavender essential oil is reported. Identification and characterization of the main compounds of this oil is needed, in order to identify chemotypes. This information is useful for further uses of the produced oil. Essential oil extracted from two Lavandula angustifolia L. varieties, cultivated in different areas of Transylvania, Romania, was analysed from the point of view of qualitative and quantitative composition, using gas-chromatography. Basic statistics was used for calculation of essential oil compounds means and dispersion parameters, while the profile of the essential oil composition was emphasized using Box-Plot diagrams and cluster analysis. Nine compounds, in different amounts were quantified, and two chemotypes, corresponding to ‘Mailette’ and ‘Vera’ varieties were established (linalool, and linalyl acetate, respectively). Differences in essential oil composition are recorded in ‘Vera’ variety corresponding to ‘Vera’ linalyl acetate chemotype, function of specific condition of lavender cultivation area.

scholarly journals Essential Oil Chemical Composition and Headspace Volatiles Profile of Achillea coarctata from Serbia

2016 ◽  
Vol 11 (4) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Ivana R. Kostevski ◽  
Goran M. Petrović ◽  
Gordana S. Stojanović ◽  
Jelena G. Stamenković ◽  
Bojan K Zlatković
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Headspace Volatiles ◽  
Aerial Parts ◽  
Germacrene D ◽  
Leaf Oil ◽  
Stems And Leaves

This study reports the essential oil composition and headspace volatiles profile of Achillea coarctata Poir. from Serbia. The inflorescences, stems and leaves, and the aerial parts of A. coarctata were analyzed separately. Germacrene D, α-terpineol and 1,8-cineole were the main constituents of the aerial parts essential oil; 1,8-cineole, cis-cadin-4-en-7-ol and α-terpineol were the most dominant compounds in the inflorescence essential oil, while the most abundant components in the stem and leaf oil were germacrene D, cis-cadin-4-en-7-ol and ledol. The percentages of monoterpenoids and sesquiterpenoids in the aerial parts were the same, while there were differences in distribution of these compound classes in inflorescence and stem and leaf essential oils. The major components of the headspace volatiles were the same for aerial parts, inflorescence and stem and leaves: 1,8-cineole, β-pinene and α-pinene.

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