Evaluation of Repellency of Some Chinese Medicinal Herbs Essential Oils Against <I>Liposcelis bostrychophila</I> (Psocoptera: Liposcelidae) and <I>Tribolium castaneum</I> (Coleoptera: Tenebrionidae)

Abstract

The screening for repellency against the booklouse, Liposcelis bostrychophila (Badonnel), and the red flour beetle, Tribolium castaneum (Herbst), from 14 Chinese medicinal herbs showed that the essential oils of Curcuma longa L., Epimedium pubescens Maximouwicz, Lindera aggregate (Sims) Kostermans, Nardostachys chinensis Battandier, Schizonepeta tenuifolia Briquet, Zanthoxylum schinifolium Sieber et Zuccarini, and Z. officinale Roscoe exhibited strong repellency against L. bostrychophila and T. castaneum. A total of 35 components of the essential oil of E. pubescens were identified by gas chromatography and gas chromatography-mass spectrometry. Beta-Eudesmol (14.89%), alpha-pinene (13.38%), borneol (9.56%), (R)-carvone (7.89%), and menthol (7.45%) were the main components of the essential oil of E. pubescens. From the essential oil of E. pubescens, four monoterpenoids and one sesquiterpenoid were isolated by bioassay-guided fractionation. The compounds were identified alpha-pinene, borneol, menthol, carvone, and beta-eudesmol. (R) -carvone, menthol, borneol, and beta-eudesmol were strongly repellent against L. bostrychophila at concentration of 8.5 nl/cm2 after 2 h exposure whereas alpha-pinene exhibited moderate repellency. (R)-carvone exhibited stronger repellency against the booklouse than the positive control, N, N-diethyl-3-methylbenzamide (DEET). Moreover, (R)-carvone also possessed stronger repellency against T. castaneum than DEET. The other four constituents, menthol, borneol, and beta-eudesmol also showed repellency against the red flour beetles but weaker than DEET at lower concentrations.

Microcapsules biologically prepared using Perilla frutescens (L.) Britt. essential oil and their use for extension of fruit shelf life

“…Perilla EO has also been shown to possess high antioxidant, antimicrobial, anti‐inflammatory, insecticidal, anticancer and antidepressant activities . Moreover, EOs have proven to be more reliable and effective than chemically synthesized food preservatives and pesticides …”

Chemical composition of essential oils extracted from six Murraya species and their repellent activity against Tribolium castaneum

“…In this context, increased attention has been given to the use of essential oils or their constituents with low mammalian toxicity as effectively natural pesticides for control of insects in storage (Isman, 2006). Essential oils of many plants including medicinal herbs, spices and fruits and their constituents have been evaluated successfully for insecticidal, repellent and feeding deterrent activities against stored product insects, and they have been proven more effective than traditionally used pesticides in some cases (Ahmadi et al, 2013;Bachrouch et al, 2015;Liang et al, 2013;Liu et al, 2011;Phillips and Throne, 2010).…”

Chemical Composition of Essential Oils from SixZanthoxylumSpecies and Their Repellent Activities against Two Stored-Product Insects

“…Therefore, as the secondary metabolism of aromatic plants, volatile essential oils have drawn more and more attention. Currently, a great number of essential oils from natural plants have been investigated, and some of them have turned out to possess strong insecticidal, repellent, and feeding deterrent effects [8][9][10][11].…”