Salt effects on Origanum majorana fatty acid and essential oil composition

2011 ◽  
Vol 91 (14) ◽  
pp. 2613-2620 ◽  
Author(s):  
Olfa Baâtour ◽  
Rym Kaddour ◽  
Hela Mahmoudi ◽  
Imen Tarchoun ◽  
Iness Bettaieb ◽  
...  
2012 ◽  
Vol 62 (2) ◽  
pp. 251-261 ◽  
Author(s):  
Olfa Baâtour ◽  
Imen Tarchoune ◽  
Hela Mahmoudi ◽  
Nawel Nassri ◽  
Wissal Abidi ◽  
...  

Culture conditions and salt effects on essential oil composition of sweet marjoram (Origanum majorana) from TunisiaO. majoranashoots were investigated for their essential oil (EO) composition. Two experiments were carried out; the first on hydroponic medium in a culture chamber and the second on inert sand in a greenhouse for 20 days. Plants were cultivated for 17 days in hydroponic medium supplemented with NaCl 100 mmol L-1. The results showed that theO. majoranahydroponic medium offered higher essential oil yield than that from the greenhouse. The latter increased significantly in yield (by 50 %) under saline constraint while it did not change in the culture chamber. Under greenhouse conditions and in the absence of salt treatment, the major constituents were terpinen-4-ol andtrans-sabinene hydrate. However, in the culture chamber, the major volatile components werecis-sabinene hydrate and terpinen-4-ol. In the presence of NaCl, new compounds appeared, such as eicosane, spathulenol, eugenol, and phenol. In addition, in the greenhouse, with or without salt, a very important change oftrans-sabinene hydrate concentration in EO occurred, whereas in the culture chamber change appeared incis-sabinene hydrate content.


2013 ◽  
Vol 35 (8) ◽  
pp. 2365-2372 ◽  
Author(s):  
Imen Tarchoune ◽  
Olfa Baâtour ◽  
Jamel Harrathi ◽  
Ghaith Hamdaoui ◽  
Mokhtar Lachaâl ◽  
...  

2009 ◽  
Vol 64 (9-10) ◽  
pp. 611-614 ◽  
Author(s):  
Fathy M. Soliman ◽  
Miriam F. Yousif ◽  
Soumaya S. Zaghloul ◽  
Mona M. Okba

Z. Naturforsch. 64 c, 611 - 614 (2009); received March 1/30, 2009 The hydrodistilled essential oil content of Origanum majorana L. (Lamiaceae) ranged from 2.5 - 3% with the maximal value (3%) in spring. Analysis of the oil by GC/MS resulted in the identifi cation of 15, 15, 11, and 14 components in the oils prepared in spring, summer, autumn, and winter, respectively. The composition of the essential oils differed quantitatively and qualitatively according to the time of collection. Thymol (38.4%) and cis-sabinene hydrate (25.3%) were the major components in spring plants. Terpinen-4-ol (37.4%, 20.5%, 16.3%) was a major component in the summer, autumn and winter oils, respectively. cis- Sabinene hydrate (54.4%) was major in winter plants while terpinolene (43.1%) was the main component in autumn plants. Other components detected in lower amounts in all oil samples were sabinene and p-cymene (up to 7.4% and 13.9% in autumn), and α-terpinene (up to 13.3% in summer)


2009 ◽  
Vol 4 (3) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Patrícia Natália B. de Lira ◽  
Joyce Kelly R. da Silva ◽  
Eloisa Helena A. Andrade ◽  
Pergentino José C. Sousa ◽  
Nayla N. S. Silva ◽  
...  

The essential oils of three species of Peperomia from the Amazon, Brazil, were hydrodistilled and their 96 volatile constituents identified by GC and GC-MS. The main constituents found in the oil of P. macrostachya were epi-α-bisabolol (15.9%), caryophyllene oxide (12.9%), myristicin (7.6%), an aromatic compound (6.6%) and limonene (5.4%). The oil of P. pellucida was dominated by dillapiole (55.3%), ( E)-caryophyllene (14.3%) and carotol (8.1%). The major volatile found in the oil of P. rotundifolia was decanal (43.3%), probably a fatty acid-derived compound, followed by dihydro-β-santalol (9.0%), ( E)-nerolidol (7.9%) and limonene (7.7%). The aromatic compounds elemicin, myristicin, apiole, dillapiole and safrole identified in these Peperomia species has been found also in Amazon Piper species. The oils and methanol extracts showed high brine shrimp larvicidal activities. The oil of P. rotundifolia (LC50 = 1.9 ± 0.1 μg/mL) was the more toxic, followed by the extract of P. pellucida (LC50 = 2.4 ± 0.5 μg/mL) and the oil of P. macrostachya (LC50 = 9.0 ± 0.4 μg/mL), therefore with important biological properties.


2019 ◽  
Vol 140 ◽  
pp. 111628 ◽  
Author(s):  
Seyed Sajjad Hosseini ◽  
Hassan Rezadoost ◽  
Farsad Nadjafi ◽  
Mohammad Hassan Asareh

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