Acclimatization study of Tagetes lucida L. in Egypt and the chemical characterization of its essential oils

Abstract

Seeds of Tagetes lucida were imported to Egypt from Canada and propagated under greenhouse conditions in peat moss media. Soil was sandy in texture and the irrigation system was dripping irrigation. The growth parameters were determined at five successive plant ages, fresh and dry weights of herb were determined at three successive plant ages. The yield of aerial parts after 175 days, was about 7.5 Mg/ha. The essential oil (EO) was extracted by hydro-distillation for three hours with a yield of about 0.5% (w/v). The EO of each sample was subjected to gas-chromatography/mass spectrometry analyses to study the chemical composition. The main component of the EO was identified as methyl chavicol which matched over 90% of the whole composition. Chlorophyll a and carotenes increased with increasing plant age in both sites and seasons. Flavonoids decreased with the development of plant age, while the opposite was true with coumarines content.

Tagetes spp. Essential Oils and Other Extracts: Chemical Characterization and Biological Activity

“…Other compounds include linalol (0.3–3.7%), myrcene (1.3%), ( E )-β-ocimene (2.9%), linalol (1.1%), β-caryophyllene (0.5–2.4%), germacrene D (tr–5.4%), methylisoeugenol (tr–3.9%), bicyclogermacrene (0.6%), spathulenol (tr–0.2%), and caryophyllene oxide (tr–10.3%). These data were confirmed by later papers; an EO distilled from aerial parts from Colombia [ 95 , 96 ] displayed methylchavicol (92.1%), β-myrcene (5.9%), ( E )-β-ocimene (1.3%), and linalol (0.3%), while an EO from Egypt [ 97 ] contained over 90% methyl chavicol.…”

Antileishmanial Activity and Influence on Mitochondria of the Essential Oil from Tagetes lucida Cav. and Its Main Component

“…Our result corroborates a report by Regalado et al, [10], which identified forty volatile compounds and estragole was the major constituent with a 96.8% composition. The analysis of EO from T. lucida plants from Egypt [11,12], Colombia [13], and Costa Rica [14] also showed that the main component identified was estragole, corresponding to more than 80% of the entire composition. Therefore, it appears that this chemotype is highly predominant, for which this plant has been recommended as a relevant source to obtain pure estragole [14].…”

“…Nevertheless, a different quantitative and qualitative composition has also been documented in plants collected from Mexico [15], in which the main compound was geranyl acetate (49.9%). A perusal of the literature reveals at least four different chemotypes of T. lucida based on essential oil composition: (1) an estragole-dominated chemotype [10][11][12][13][14], (2) an estragol/anethol chemotype [15,16], (3) a methyl eugenol chemotype [17], and (4) a geranyl acetate-rich chemotype [17,18]. The phenylpropanoid estragole is found in numerous EOs and is known to possess different pharmacological properties, such as antifungal [19], antiparasitic [20,21], and anti-inflammatory [22] activity.…”