title: Antifeedants against Hylobius abietis pine weevils: an active compound in extract of bark of Tilia cordata linden.
abstract: Linden (Tilia cordata) bark was shown to contain an antifeedant effective against the large pine weevil, Hylobius abietis. Soxhlet extraction of inner and outer bark resulted in an extract that showed antifeedant activity in a microfeeding assay. The extract was fractionated by chromatography on silica gel using gradient elution with solvents of increasing polarity. The content of the fractions obtained was monitored by thin layer- and gas chromatography. Fractions of similar chemical composition were merged. Two of the 17 fractions showed antifeedant activity in the microfeeding assay. Nonanoic acid was identified in both of these fractions. Subsequent testing in the microfeeding assay showed that nonanoic acid possessed strong antifeedant activity against H. abietis adults.
authors.affiliation: Chemical Ecology, Department of Crop Sciences, Swedish University of Agricultural Sciences, PO Box 44, SE-230 53, Alnarp, Sweden. per.mansson@vv.slu.se
authors.forename: Per E
authors.initials: PE
authors.lastname: Månsson
authors.forename: Carina
authors.initials: C
authors.lastname: Eriksson
authors.forename: Kristina
authors.initials: K
authors.lastname: Sjödin
mesh_terms: D000818:Animals; D005227:Fatty Acids / Q000302:isolation & purification* / Q000494:pharmacology*; D005247:Feeding Behavior; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D032384:Tilia / Q000737:chemistry*; D048889:Weevils / Q000502:physiology*
chemical_list: D005227:Fatty Acids; D010936:Plant Extracts; C008776:pelargonic acid