Composição química e atividade inseticida do óleo essencial de Schinus terebinthifolius Raddi (Anacardiaceae) sobre a broca-do-café (Hypothenemus hampei) Ferrari

Abstract

RESUMO:O óleo essencial das folhas de Schinus terebinthifolius foi obtido por hidrodestilação e analisado por CG-EM. O rendimento do óleo foi de 0,8%, sendo identificados 37 constituintes químicos. Os componentes principais foram germacreno D (25,0%), (E)-b-cariofileno (17,5%) e d-elemeno (10,5%). O óleo essencial foi diluído em acetona nas concentrações de 10 -2 a 10 -8 e aplicado aos insetos (Hypothenemus hampei) por aplicação tópica e exposição em superfície contaminada. As taxas de mortalidade foram avaliadas após 24 e 48 horas do início do experimento. A aplicação em superfície contaminada resultou em 25% de mortalidade no controle, enquanto nas diluições de 10 -2 a 10 -8 foram observados 100,0 a 30,0% de mortalidade. Na aplicação tópica, observou-se 27,5% de mortalidade no controle e 97,5 a 77,5% nas diluições de 10 -2 a 10 -8 .Palavras-chave: cafeicultura, aroeira vermelha, inseticida natural, metabólitos secundários. ABSTRACT: Chemical composition and insecticidal activity of the essential oil ofSchinus terebinthifolius Raddi (Anacardiaceae) on coffee berry borer (Hypothenemus hampei) Ferrari. The essential oil from the leaves of Schinus terebinthifolius was obtained by hydrodistillation and was analyzed by GC-MS. The oil yield was 0.8%, and 37 chemical constituents were identified. The main components were germacrene D (25.0%), (E)-bcariophyllene (17.5%) and d-elemene (10.5%). The essential oil was diluted in acetone in concentrations of 10 -2 to 10 -8 and it was applied to insects (Hypothenemus hampei) by topical application and exposure to contaminated surface. Mortality rates were evaluated after 24 and 48 hours. The contaminated surface application resulted in 25.0% of mortality in control while the dilutions of 10 -2 to 10 -8 resulted in 100% to 30.0% of mortality respectively. In the topical application, it was observed 27.5% of mortality in control and 97.5 to 77.5% of mortality in dilutions of 10 -2 to 10 -8 .

Effects of Schinus terebinthifolius extracts on the control of Sitophilus species in stored wheat grains

“…The insecticide effect promoted by S. terebinthifolius may be related to the chemical structure of compounds present in extracts from its leaves. Santos et al (2013) identified the presence of phenolic substances, such as flavonoids from the aqueous extract and ethyl acetate from the leaves of S. terebinthifolius. Whereas Guimarães et al (2014), evaluating the repellant, insecticide and fago inhibitor effect of the extracts of pepper dedo-de-moça (Capsicum baccatum) over corn Sitophilus zeamais weevil, found that the aqueous extract of seeds of pepper dedo-de-moça was the one that presented the greatest potential insecticide compared to the alcoholic extracts of 2.5, 5 and 10%.…”

“…Since they are obtained from renewable resources, they are rapidly degradable, act without leaving residues in food, do not damage the ecosystem and are less toxic to humans (Olivo et al, 2008;Agnolin et al, 2010). The Brazilian pepper tree (Schinus terebinthifolius) has been widely studied and its extracts fight against insect pests (Santos et al, 2007a(Santos et al, , 2013. This is due to the chemical constituents distributed in plants' parts, such as tannin, bioflavonoids, triterpernic acids, mono and sesquiterpenes present in leaves (Silva et al, 2011).…”

Salvia officinalis essential oil in bean weevil control

“…Hypothenemus hampei Ferrari (Coleoptera, Scolytidae) has been controlled using Schinus terebinthifolius essential oil (Santos et al 2013) and Zabrotes subfaciatus Boheman (Coleoptera: Bruchidae) using Laurus nobilis essential oils (Silva et al 2013). Moreover, due to the fact that essential oils are composed of different substances, they can be important tools for insect resistance management, since these compounds may act on different physiological routes of the insect (Bakkali et al 2008, Regnault-Roger et al 2012.…”

Estudo farmacobotânico de partes aéreas vegetativas de aroeira-vermelha (Schinus terebinthifolius Raddi, Anacardiaceae)

“…Além destes, também foram observados α-pineno (Matsuo et al, 2011) e limoneno (Santos et al, 2007). Estudos recentes comprovaram atividade antimicrobiana (Degáspari et al, 2005;Johann et al, 2008;Paiva et al, 2010;Machado et al, 2012;Gomes et al, 2013), antiinflamatória (Medeiros et al, 2007;Varela-Barca et al, 2007), antifúngica (Fenner et al, 2006;Santos et al, 2010;Khan, 2013), antitumoral (Queires et al, 2013) e inseticida (Santos et al, 2013) dessa espécie.…”