Extractability of Thevetia peruviana glycosides with alcohol mixture

Abstract

The aim of this work was to investigate the most effective extraction conditions for the production of thevetia seed protein concentrate of reduced cardiac glycoside content. Alcoholic extraction of the glycosides was studied as a function of time, solvent to meal ratio and solvent composition. Thevetia seed meal was extracted with 10:1, 15:1 and 20:1 solvent to meal ratios, for 45 min, 24, 48 and 72 h. Varying concentrations -50 to 100% (v/v) aqueous alcohol -were also used. A concentration of 70 or 80% aqueous alcohol resulted in the lowest glycoside content, while a solvent to meal ratio of 15:1, extracted over a period of 72 h, appears to give the best compromise between glycoside extraction and cost of extraction solvent. All treatments resulted in an increase in the protein content of the samples.

Thevetia peruviana Seed Oil Transesterification for Biodiesel Production: An Optimization Study

“…The Apocynaceae family includes this plant, which is widely distributed on the continents of America, Asia, and Africa. The plant, which is loathed by herbivorous animals, produces seeds with high oil content (60-65%) [20], and it can be cultivated on expressway road barriers and roadside ditches for aesthetic purposes, environmental protection, and biodiesel generation. The plants may be gathered continuously for years on end and can be grown on places that would otherwise not appropriate for use in conventional agriculture.…”

Etude De L’efficacité De L’huile De Thevetia Neriifolia Pour Le Contrôle De Anopheles Gambiae S.L Résistant Aux Pyréthrinoïdes

“…La vulnérabilité des larves de stade 4 serait liée à la profonde métamorphose qui caractérise ce stade conduisant à la formation des pupes. Plusieurs études ont montré que l'huile de Thevetia est essentiellement composé de thevetine A et B, de la thevotoxine, de la peruvoside, de ruvoside, de la neriifoline …etc(Omolara et Samuel, 2007;Garima et Amla, 2011;Neelam et Anil, 2014). Ces composés seraient à l'origine de l'effet létal de l'huile.…”