Effect of Separation Method on Chemical Composition and Insecticidal Activity of Lamiaceae Isolates

0392957 - ÚCHP 2014 RIV GB eng J - Journal Article
Sajfrtová, Marie - Sovová, Helena - Karban, Jindřich - Rochová, Kristina - Pavela, R. - Barnet, M.
Effect of Separation Method on Chemical Composition and Insecticidal Activity of Lamiaceae Isolates.
Industrial Crops and Products. Roč. 47, MAY (2013), s. 69-77. ISSN 0926-6690. E-ISSN 1872-633X
R&D Projects: GA MŠMT 2B06049; GA TA ČR TA01010578
Institutional support: RVO:67985858
Keywords : supercritical fluid extraction * iInsecticidal activity * lamiaceae
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 3.208, year: 2013

Supercritical fluid extraction was used to isolate volatile compounds from savory (Satureja hortensis L.), thyme (Thymus vulgaris L.), lavender (Lavandula angustifolia L.) and peppermint (Mentha piperita L.). Three types of extracts were prepared using the benefit of variable solvent power of supercritical carbon dioxide under different extraction conditions. The composition and toxicity of CO2 extracts, products of Soxhlet extraction with hexane and ethanol, and essential oils obtained by hydrodistillation were compared. The composition of volatile compounds in the isolates was determined by gas chromatography. The acute toxicity of the isolates was evaluated in Spodoptera littoralis, Musca domestica, Culex quinquefasciatus, and Leptinotarsa decemlineata. The highest acute toxicity was exhibited by essentials oils, followed by CO2 extracts. The lowest LD50 value, 22 g, was measured for savory essential oil against the larvae of L. decemlineata.
Permanent Link: http://hdl.handle.net/11104/0221717