Composition and insecticide potential against Tribolium castaneum of the fractionated essential oil from the flowers of the Tunisian endemic plant Ferula tunetana Pomel ex Batt was written by Baccari, Wiem;Znati, Mansour;Zardi-Bergaoui, Afifa;Chaieb, Ikbel;Flamini, Guido;Ascrizzi, Roberta;Ben Jannet, Hichem. And the article was included in Industrial Crops and Products in 2020.Category: esters-buliding-blocks This article mentions the following:
For several years, plant derived substances, in particular essential oils, have been the subject of increasing attention in their safe and ecofriendly application to crops, as a powerful alternative to chem. insecticides. For this reason, the essential oil isolated from flowers of Ferula tunetana, a Tunisian endemic plant, was investigated for the first time for its chem. profile, and its toxicity and repellency effects against Tribolium castaneum (Herbst) adults. The anal. by gas chromatog. coupled with mass spectrometry (GC/MS) led to determine 92.8-99.1% of the total oil (FEO) and its fractions (F1-F12) obtained every 15 min during the hydrodistillation process. The chem. anal. allowed to identify 77 compounds a-Pinene (14.3%), a monoterpene hydrocarbon, was the major compound of the raw essential oil. Relatively high amounts of oxygenated sesquiterpenes (44.9-76.8%) were detected, consisting mainly of epi-α-muurolol (3.6-9.5%), himachalol (6.8%) and β-chenopodiol (5.1-7.1%). Regarding the repellency assay, results demonstrated that flowers essential oil of F. tunetana and its fractions displayed interesting repellent property (93%). The median LD (LD50) of the topical application of the oil was 10.44%. Fumigation with the raw essential oil gave a LD50 of 161.89μL/L air. The overall data suggest that the F. tunetana essential oil might be used to protect stored products from pest attacks, but further studies are needed in order to better understand the synergistic relationship between the phytochems. contained in the essential oil. In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Category: esters-buliding-blocks).
Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics