Toxicity of Four Essential Oils Against Two Insect Pests of Stored Grains, Rhyzopertha dominica (Coleoptera: Bostrychidae) and Sitophilus oryzae (Coleoptera: Curculionidae)

Chemical profiling and bioactivities of essential oils from Thymus capitatus and Origanum compactum against Tribolium castaneum

“…Thymus persicus EO exhibited strong repellency against Tribolium castaneum (Herbst) and Callosobruchus maculatus [ 41 ]. As for OC essential oil, Bounoua-Fraoucene et al [ 42 ], reported its pronounced repellent activity against two stored products insects Rhyzopertha dominica and Sitophilus oryzae in the repellent bioassay. Additionally, another study by Aimad et al [ 43 ] using the same Origanum species reported a moderate repellent activity with an average of 39% of repellency.…”

Evaluation of the Effect of Four Bioactive Compounds in Combination with Chemical Product against Two Spider Mites Tetranychus urticae and Eutetranychus orientalis(Acari: Tetranychidae)

“…Thymol can bind to GABA receptors located in the membrane of post-synaptic neurons and disrupt the functioning of synapses [ 37 ] under laboratory conditions. A study shows that the essential oils of O. compactum is often toxic against Rhyzopertha dominica and Sitophilus oryzae Linnaeus, 1763 [ 38 ]. This was confirmed in our study against T. urticae and E. orientalis.…”

Biopesticidal silo bag prepared by co-extrusion process

“…The essential oils and their major components act as fumigants towards weevils found in stored grain (Herrera et al, 2014). Previous studies showed the fumigant effect of M. piperita essential oil on R. dominica, T. castaneum and S. oryzae with lethal concentration 50 (LC 50 ) between 3.79 and 50.27 μL/L of air, whereas contact toxicity showed LC 50 values between 3.6 and 8.4 μg/cm 2 (Lee et al, 2002;Bounoua-Fraoucene et al, 2019). The essential oil of M. piperita has two major components, terpene alcohol and ketone, such as menthol and menthone, respectively (Kumar et al, 2011;Moral Ruiz, 2016;Young Living, 2018;Pang et al, 2020).…”

“…Thus, the insecticidal effect of essential oils has been evaluated to control pests of stored grain using fumigation, contact, repellency and antifeedant tests in vitro (Kumar, Mishra, Malik, & Satya, 2011;Lashgari, Mashayekhi, Javadzadeh, & Marzban, 2015). Other studies have shown the potential of M. piperita essential oil in the control of crop pests having with an effect on the activity of the acetylcholinesterase (AChE) enzyme and oxidative stress (Lee et al, 2002;Bounoua-Fraoucene, Kellouche, & Debras, 2019;Rajkumara et al, 2019). Due to the volatility of essential oils, they have been incorporated into low-density polyethylene (LDPE) polymer through impregnation technology with supercritical CO 2 .…”