Culture conditions and salt effects on essential oil composition of sweet marjoram (Origanum majorana) from Tunisia

Abstract

<jats:title>Culture conditions and salt effects on essential oil composition of sweet marjoram (<jats:italic>Origanum majorana</jats:italic>) from Tunisia</jats:title><jats:p><jats:italic>O. majorana</jats:italic>shoots 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<jats:sup>-1</jats:sup>. The results showed that the<jats:italic>O. majorana</jats:italic>hydroponic 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 and<jats:italic>trans</jats:italic>-sabinene hydrate. However, in the culture chamber, the major volatile components were<jats:italic>cis</jats:italic>-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 of<jats:italic>trans</jats:italic>-sabinene hydrate concentration in EO occurred, whereas in the culture chamber change appeared in<jats:italic>cis</jats:italic>-sabinene hydrate content.</jats:p>

Physico-Chemical Properties, Fractionation and Antioxidant Activity of Some Essential Oils Utilized in Mayonnaise Preparation and Storage

“…Due to their antioxidant activity, phenolic compounds such as thymol in essential thyme oil plays an important role (Braga 2005). Similar classification groups were observed for both thyme and stachys essential oils with small variations in component concentrations The variations in the content and compositional pattern of thyme and Stachys essential oils, however, may be due to several factors, including plants, growth stages, herb origin, environment and drying conditions (Sellami et al 2009, Baatour et al 2012.…”

Isolation and identification of chemical constituents from Origanum majorana and investigation of antiproliferative and antioxidant activities

“…Origanum majorana is useful as a health complement and in food preservation . Traditionally, O. majorana has been used as a remedy against asthma, indigestion, headache and rheumatism .…”

“…8 Origanum majorana is useful as a health complement and in food preservation. 9 Traditionally, O. majorana has been used as a remedy against asthma, indigestion, headache and rheumatism. 10 Many phytochemical studies have been conducted to investigate the chemical composition of the essential oil of O. majorana.…”

Effect of Lettuce, Marjoram and Cumin Essential Oils on the Quality and Shelf Life of Minced Meat during Refrigerated Storage

“…The main components of marjoram and cumin EOs that include cumaldehyde, cymene, limonene and linalol are therefore responsible for their antimicrobial activity [41,42]. However, marjoram oil is distinguished by a varied pattern in its composition due to several variables including the species, growth stages, herb origins, and climatic conditions [43]. These components may penetrate the inside of the cell and interact with intracellular sites that are critical to bacterial activities [44] and prevent the function of glucosyl transferase enzyme accountable for bacteria adhesion to host sites [45].…”