GC-MS analysis and insecticidal effect of methanol extract of Pistacia khinjuk Stocks leaves

Abstract

<p>Regarding the significance of environmental issues, the use of herbal compounds is proposed as an alternative method for methyl bromide and phosphine. In this research, the insecticide effect of MeOH extract of <em>Pistacia khinjuk</em> leaves on <em>Tribolium confusum</em> (Jacquelin du Val, 1863) and <em>Oryzaephilus surinamensis</em> (Linnaeus, 1758) was studied. The chemical compounds of the extract were also identified by the GC-Mass device. The contact toxicity test was performed on 1 to 7-day-old insects. LC<sub>50</sub> values of 9.32 and 5.47 mg ml<sup>–1</sup> were calculated for <em>T. confusum</em> and <em>O. surinamensis</em>, respectively. More than 39 compounds were identified in MeOH extract of <em>P. khinjuk</em>, with 5-ethoxy-4-phenyl-2-isopropylphenol (29.02 %), phenyl ethyl alcohol (10.78 %), benzyl alcohol (7.8 %) and 1, 2-benzenediol (6.67 %) as main compounds. In addition, there were the known insecticide compounds such as spathulenol (2.07 %), myrcene (2.03 %), ρ-cymene (1.67 %), apiol (1.61 %), borneol (0.79 %), and pulegone (0.44 %) in the plant extract that confirmed the potential of the <em>P. khinjuk</em> extract in controlling stored-product insects.</p>

Chemical composition and insecticidal effect of methanol extract of Capparis spinosa L. fruits on Tribolium confusum Jacquelin du Val, 1863 and Sitophilus oryzae (L., 1763) adults

“…Mass spectra were recorded over 40-500 amu range at 1 scan/s with ionization energy 70 eV and ion source temperature 250 °C. Constituent's identification was made by comparison of their mass spectra with those stored in NIST and Wiley libraries or with mass spectra from the literature (Ravan et al, 2019;Rojht et al, 2012).…”