Extraction and bioactivity from Jatropha Curcas L. leaves by steam distillation.

Abstract

Jatropha curcas L. has biological activities that can contribute to find new products. In this study, steam distillation at laboratory scale was applied to J. curcas leaves to assess the yield of essential oil and the bioactivity of the hydrolate. The effect of steam flow and bed porosity on the extraction yield was also determined, where it was observed that residence time was one of the influential factors in the yield of essential oil. The extracts were analyzed by GC-MS. Dibutyl phthalate, phytol, and diisooctyl phthalate were the majoritarian components. Research reports indicate that these components have biological activity. The greatest yield obtained was 0.38% on a dry weight basis. The bioassays showed that the hydrolate of J. curcas possessed toxicity against Spodoptera littoralis, Myzus persicae, Lactuca sativa, and Lolium perenne. The bioactivity of these products should be further explored, they have a promising future as a biocontroller.

Comparative between Two Eco-Friendly Botanical Oils through Studies Toxicological, Biological and Molecular Impacts on the Cotton Leafworm, Spodoptera littoralis (Boisd.)

“…Furthermore, obtained results were in context with results obtained by Ingle et al (2017) on the 3 rd instar larvae of S. litura. The toxic activity of jatropha oil is due to the presence of hydrolates which were reported previously for their toxicological effect against S. littoralis larvae besides their antioxidant and antibacterial activities (Calvo, 2012 andSoto-Armenta et al, 2019). In addition, it was reported that Jatropha contains high amounts of phenolics, esters, and flavonoids, which proved to have high larvicidal activity (Oskoueian et al, 2011).…”

“…β-stigmasterol has acaricidal activity while phytol has antimicrobial, anti-inflammatory, anticancer, and diuretic activities (Rajeswari et al, 2012). Some studies reported that aqueous and methanolic extracts had insecticidal activity specifically against dipteran insects (Kovendan et al, 2011;Tomass et al, 2011;Juliet et al, 2012;Reichel et al, 2013;Chauhan et al, 2015;Khattak et al, 2015;and Soto-Armenta et al, 2019).…”