Extraction of Botanical Pesticides from Pelargonium graveolens using Supercritical Carbon Dioxide

0441570 - ÚCHP 2016 RIV NL eng J - Journal Article
Machalová, Zdeňka - Sajfrtová, Marie - Pavela, R. - Topiař, Martin
Extraction of Botanical Pesticides from Pelargonium graveolens using Supercritical Carbon Dioxide.
Industrial Crops and Products. Roč. 67, MAY (2015), s. 310-317. ISSN 0926-6690. E-ISSN 1872-633X
R&D Projects: GA TA ČR TA01010578
Institutional support: RVO:67985858
Keywords : botanical pesticides * geranium oil * supercritical fluid extraction
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 3.449, year: 2015

Pelargonium graveolens is a valuable source of biologically active compounds and a promising botanical pesticide. In this study, supercritical fluid extraction (SFE) of Pelargonium leaves was optimized to improve the extraction yields, selectivity and pesticidal activity under different operational conditions (pressure 9–30 MPa, temperature 40 and 50 °C). The composition and pesticidal activity of the CO2 extracts were compared with the isolates obtained by maceration and hydrodistillation. GC–MS and GC–FID were used to determine the chemical composition of the isolates. The insecticidal activity (acute and chronic toxicity, antifeedancy) of the isolates was measured on larvae of Spodoptera litoralis.The antifungal activity was evaluated as the inhibition effect on the growth of model pathogenic and toxinogenic fungi. Results suggest that CO2 extracts of P. graveolens can be suitable substitutes to the essential oil in the use as botanical pesticides.
Permanent Link: http://hdl.handle.net/11104/0246213