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Comparison of Fractionation Techniques of CO2 Extracts from Eucalyptus Globulus - Composition and Insecticidal Activity
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SYSNO ASEP 0440668 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Comparison of Fractionation Techniques of CO2 Extracts from Eucalyptus Globulus - Composition and Insecticidal Activity Tvůrce(i) Topiař, Martin (UCHP-M) RID, ORCID, SAI
Sajfrtová, Marie (UCHP-M) RID, ORCID, SAI
Pavela, R. (CZ)
Machalová, Zdeňka (UCHP-M) RIDZdroj.dok. Journal of Supercritical Fluids. - : Elsevier - ISSN 0896-8446
Roč. 97, FEB 2015 (2015), s. 202-210Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova supercritical fractinacion ; eucalyptus globulus ; insecticidal activity Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP TA01010578 GA TA ČR - Technologická agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000348952800024 EID SCOPUS 84937192203 DOI https://doi.org/10.1016/j.supflu.2014.12.002 Anotace Supercritical fluid extraction combined with two fractionation methods, sorption and series of separators, was applied on Eucalyptus globulus leaves in order to maximize the insecticidal activity of extracts against Leptinotarasa decemlineata larvae. The major compounds in the essential oil isolated with the yield 26.7 mg/g were 1,8-cineole (42.6 wt%), -pinene (10.7 wt%) and globulol (5.9 wt%). The concentration of total volatiles in the extracts varied from 2.8 to 59.5 wt%, depending on the extraction and fractionation conditions. The extract obtained at 50 °C and 9 MPa exhibited the highest acute toxicity with LD50 = 38 µg. ScCO2 extracts exhibited several times stronger insecticidal activity in terms of chronic toxicity, antifeedant activity and growth inhibition than essential oil. Increase in the concentration of volatiles in isolates resulted into increase of chronic toxicity and antifeedant activity while growth inhibition decreased. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2015
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