Chemical Composition and Insecticidal Activity of Essential Oil of <i>Artemisia frigida</i> Willd (Compositae) against Two Grain Storage Insects

Abstract

Purpose: To investigate the chemical composition and insecticidal activity of the essential oil of the aerial parts of Artemisia frigida against maize weevils (Sitophilus zeamais) and booklice (Liposcelis bostrychophila)． Methods: Steam distillation of A. frigida aerial parts was carried out in a Clavenger apparatus to extract its volatile oil content. Gas chromatography/mass spectrometric (GC/MS) analyses (HP-5MS column) of the essential oil were performed and its contact toxicity was determined using topical application and filter paper impregnation

Isolation of Insecticidal Constituents from the Essential Oil ofAgeratum houstonianumMill. againstLiposcelis bostrychophilaBadonnel

“…However, compared with the positive control, pyrethrum extract (LC 50 = 18.99 g/cm 2 ), A. houstonianum essential oil, and precocene II showed 2.7 and 1.6 times less toxicity to L. bostrychophila, respectively. When compared with the other essential oils in the previous studies using the same bioassay, the essential oil of A. houstonianum exhibited stronger or the same level of acute toxicity against the booklice, for example, essential oils of Acorus calamus [26], Artemisia rupestris and A. frigida [24,27], Curcuma wenyujin [28], Foeniculum vulgare [22], and Valeriana jatamansi [29].…”

Chemical composition and insecticidal properties of the essential oil of <i>Bidens frondosa</i> L (Asteraceae) against booklice (<i>Liposcelis bostrychophila</i>)

“…However, the essential oil of B. frondosa demonstrated stronger contact toxicity against L. bostrychophila adults than several essential oils using the same bioassay, e.g. Artemisia rupestris [11], A. frigida [12], Curcuma wenyujin [13], Foeniculum vulgare [14], and Valeriana jatamansi [15], however, the essential oil of B. frondosa shows less contact toxicity than the essential oils of Illicium henryi [16] and Kaempferia galangal [17]. Among the four isolated constituents, caryophyllene oxide, and borneol displayed stronger contact toxicity (no overlap in 95 % fiducial limit) than the essential oil against the booklice (L. bostrychophila).…”

“…When compared with dichlorvos (LC 50 = 1.35 μg/L), the essential oil of B. frondosa and 4-terpineol showed only 375 times and 248 times less toxicity against L. bostrychophila, respectively. However, the essential oil of B. frondosa demonstrated a stronger fumigant toxicity against booklice than several essential oils using the same bioassay, e.g., Artemisia rupestris (LC 50 = 6.67 mg/L air) [11], A. frigida (LC 50 =1.25 mg/L) [12], C. wenyujin (LC 50 = 2.76 mg/L) [13], V. jatamansi (LC 50 = 6.0 mg/L) [15], and K. galangal (LC 50 = 1.5 mg/L air) [17], but the oil of B. frondosa demonstrated less toxicity than the essential oils of Allium chinense (LC 50 = 186.5 g/L air) [18] and F. vulgare fruits (LC 50 = 34.07 μg/L) [14]. However, the currently commercial fumigants (e.g.…”

Analysis of the Essential Oil of Illicium henryi Diels Root Bark and Its Insecticidal Activity against Liposcelis bostrychophila Badonnel

“…Moreover, compared with other essential oils in previous studies using the same bioassay, /. henryi essential oil exhibited stronger or the same level of acute toxicity against the booklice as, e.g., essential oils of Acorus calamus (25), Artemisia rupestris (21), Curcuma wenyujin (28), Foeniculum vulgare (46), Valeriana jatamansi (24), and Artemisia frigida (22), but it was less toxic than Ageratum houstonianum essential oil (29).…”