Yield and composition of lavender essential oil grown in substrate

Abstract

The objective of this research was to evaluate the effect of successive harvesting times and shading on the production of biomass, yield and phytochemical composition of essential oil in leaves and inflorescences of soilless grown Lavandula dentata. Plants were grown in pots filled with sand, inside a polyethylene greenhouse, in a closed system at UFSM. Plants were harvested at 150, 213 and 320 days after planting date (DAP) in winter, spring and summer, respectively. At 150 DAP, a 50% shading screen was installed. The experimental design was a randomized 3x2 factorial in subdivided plots with 36 plants per subplot. Fresh (FM) and dry mass (DM), yield and chemical composition of essential oil in leaves and inflorescences were determined after each harvest date. The essential oil was extracted, using 70 g fresh mass of leaves and of inflorescences, respectively. Identification and quantification of compounds in the essential oil were determined by gas chromatography/mass spectrometry (GC/MS). The FM of inflorescences was higher on plants harvested 213 DAP grown without shading while of leaves it was higher on plants harvested 320 DAP grown without shading. The yield of the essential oil was higher in the leaves of plants harvested 320 DAP grown without shading. Thirty-one compounds were identified and quantified, being the major ones 1.8 cineol, camphor and linalool, without significant difference among treatments. Three consecutive harvests can be made in August (150 DAP), October (213 DAP) and February (320 DAP) without replacing plants.

Morphological and phytochemical characterization of Lavandula dentata L. cultivated in Paraíba do Sul, Rio de Janeiro, Brazil

“…In the present study the essential oil (OE) content vegetable biomass ratio was 0.75. In another study, Mambri (2018) data showed out of the parts of the plant used in the extraction, the one third section of the apical aerial part produced the most OE when it was in full bloom (Mambri, 2018). Overall, the OE values suggested that L. dentata produced high levels of OE and the values recorded in this study were much higher than those efficiency of 0.56 and 0.40 for essential oils from leaves and flowers obtained by Martins, Gomes, Malpass and Okura (2019).…”

“…These morphological structures have biological properties with specific ecological functions. This variation in morphological characters and volatile constituents may be caused by plant interactions with environmental abiotic factors (Gonçalves & Romano, 2013;Mambri, 2018). In addition genetic factors are known to influence the yield and chemical composition of the essential oil (Morais, 2009) and may vary within the same species (Properzi, Angelini, Bertuzzi, & Venanzoni, 2013).…”

Chemical composition and insecticidal activity of Anacyclus pyrethrum essential oil from the Bensliman area against Culex pipiens

“…According to the results obtained, slight variations are observed in the chemical composition of the A. pyrethrum essential oil collected from different regions. These differences can be explained by factors such as soil and weather conditions, also the extraction method and the drying of the material previous extraction [29][30][31][32][33][34][35] . However, spathulenol and germacrene D are compounds known for their insecticidal activity; which makes the essential oil of A. pyrethrum an excellent natural insecticide.…”

Effect of Organic and Bio-Fertilizeron Growth, Yield, and Essential Oil of Lavandula Officinalis L. Plant Grown in to Sandy Soil

“…On the other hand, high concentrations of 1,8 cineole, camphor, or terpinen-4-ol adversely affect the quality of this oil (Góra and Lis, 1995). Compost application in growing basil contributes not only to an increase in essential oil content but also increases the concentration of linalool and borneol in the oil, with a simultaneous decrease in the content of methyl chavicol and 1,8-cineole (Taie et al, 2010 andMambrí et al, 2018).…”

“…Lavender is characterized by its high-quality essential oil which is considered raw material for many industries such as perfumes, cosmetics, and pharmaceutical industries (Chrysargyris et al, 2020;Silva et al, 2017;González-Coloma et al, 2011;Touati et al, 2011). Lavender herbage is rich in its oil content which has a high number of essential oils such as1,8 cineole, camphor, borneol, fenchol, α-pinene, β-pinene, trans-pinocarveol, and linalool (Mambrí et al, 2018). According to (Demissie et al, 2011;Meftahizade et al, 2011) which reported the antiseptic activity of lavender plants, lavender essential oils were traditionally used as an agent in swabbing of wounds, burns, insect bites, and in veterinary practice to kill parasites.…”