scholarly journals Chemical composition of the essential oils of Tagetes patula L. during different phenological stages

2019 ◽  
Vol 12 (04) ◽  
pp. 117-122
Author(s):  
Meena Kafaltiya ◽  
Hema Lohani ◽  
S. Zafar Haider ◽  
Nirpendra K. Chauhan ◽  
Neeta Joshi
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Tagetes Patula ◽  
Phenological Stages

Variation in Volatiles of Astragalus gombiformis Pomel

2011 ◽  
Vol 66 (1-2) ◽  
pp. 1-6
Author(s):  
Hassen Teyeb ◽  
Sami Zouari ◽  
Wahiba Douki ◽  
Mohamed Fadhel Najjar ◽  
Mohamed Neffati
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oils ◽  
Natural Compounds ◽  
Complex Mixtures ◽  
Wild Plants ◽  
Stages Of Development ◽  
Phenological Stages ◽  
Aerial Parts

The essential oils obtained by hydrodistillation (Clevenger apparatus) from aerial parts of Astragalus gombiformis were analysed by gas chromatography coupled with mass spectrometry (GC/MS). This study showed that the A. gombiformis essential oils are complex mixtures of important natural compounds, which varied qualitatively and quantitatively between cultivated and wild plants and between phenological stages of development. All analysed oils are characterized by the constant presence of phytol, 6,10,14-trimethyl-2-pentadecanone, 4-terpineol, and γ-terpinene. This study is the fi rst report on the chemical composition of essential oils from A. gombiformis and indicates that these oils should be more studied.

scholarly journals Variation of the Chemical Composition of Thymus Vulgaris Essential Oils by Phenological Stages

2019 ◽  
Vol 70 (2) ◽  
pp. 633-637 ◽  
Author(s):  
Cristian Moisa ◽  
Andreea Lupitu ◽  
Georgeta Pop ◽  
Dorina Rodica Chambre ◽  
Lucian Copolovici ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Food Industry ◽  
Meteorological Conditions ◽  
Thymus Vulgaris ◽  
Minor Components ◽  
Phenological Stages ◽  
Before And After

Thymus vulgaris essential oil is one of the most common oils used mainly in food industry but it could also have applications in medicine and pharmacy. The chemical composition of this essential oil depends on the plant material harvesting time, phenomenological stages, meteorological conditions and growing area of plants. In our study, four different Thymus vulgaris L. var. Donne Valley essential oils have been extracted and characterised. The essential oils have been extracted from plants before and after flowering in two different years. There is an important difference between the chemical composition of oils obtained from plants harvested before and after flowering. Thymol and carvacrol have been found as the major components, but the percentage depends on the phenological stages of the plants and the year of harvesting. Furthermore, the composition of the minor components changed.

Chemical composition and antimicrobial activity of the essential oils of flowers, leaves and stems of Cotinus coggygria

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
T Milošević ◽  
N Nićiforović ◽  
V Mihailović ◽  
S Solujić ◽  
N Vuković
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Cotinus Coggygria

Chemical composition of essential oils from leaves and twigs with leaves of two new varieties of common sage (Salvia officinalis L.)

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
A Aprotosoaie ◽  
E Gille ◽  
A Spac ◽  
M Gonceariuc ◽  
M Hancianu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Salvia Officinalis ◽  
New Varieties ◽  
Salvia Officinalis L
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