Insecticidal activity ofGallesia integrifolia (Phytolaccaceae) essential oil

Latin American and Caribbean Bulletin of Medicinal and Aromatic Plants Pub Date : 2021-01-01 DOI:10.37360/blacpma.21.20.1.3

Keila Fernanda Raimundo, W. Bortolucci, I. L. Rahal, Hérika Line Marko de Oliveira, R. P. Junior, Caio Franco de Araújo Almeida Campo, J. Gonçalves, G. Linde, N. Colauto, Z. C. Gazim

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引用次数: 3

Abstract

This study evaluated the insecticidal activity of Gallesia integrifoliaessential oil from fruits, leaves, and flowers against Aedes aegyptilarvae and pupae. The essential oil was obtained by hydrodistillation and characterized by gas chromatography-mass spectrometry. Sulfur compounds represented 95 to 99% of the essential oil from fruits, leaves, and flowers. Essential oil major compounds were 2,8-dithianonane (52.6%) in fruits, 3,5-dithiahexanol-5,5-dioxide (38.9%) in leaves, and methionine ethyl ester (45.3%) in flowers. The essential oils showed high activity against larvae, and low for pupae withLC99.9of 5.87 and 1476.67μg/mL from fruits; 0.0096 and 348.33 μg/mL from leaves and 0.021and 342.84 μg/mL from flowers, respectively. The main compound with insecticide activity is probably n-ethyl-1,3-dithioisoindole, from isoindole organothiophosphate class, found in greater amount in flower and leaf essential oil. The great insecticide activity of G. integrifoliaessential oil suggests that this product is a natural insecticide.

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植物科合欢精油的杀虫活性研究

本研究评价了果、叶、花三种不同成分的全叶甘露精油对埃及伊蚊幼虫和蛹的杀虫活性。采用水蒸气蒸馏法得到精油，并用气相色谱-质谱法对其进行了表征。含硫化合物占水果、树叶和花朵精油的95%到99%。精油主要成分为果实中的2,8-二硫烷(52.6%)、叶片中的3,5-二硫己醇-5,5-二氧化(38.9%)和花中的蛋氨酸乙酯(45.3%)。精油对幼虫的活性较高，对蛹的活性较低，lc99.9分别为5.87和1476.67μg/mL;叶片中含量分别为0.0096和348.33 μg/mL，花中含量分别为0.021和342.84 μg/mL。具有杀虫活性的主要化合物可能是n-乙基-1,3-二硫代异吲哚，属于异吲哚有机硫代磷酸酯类，在花叶精油中含量较多。藿香精油具有很强的杀虫活性，表明该产品是一种天然的杀虫剂。

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Latin American and Caribbean Bulletin of Medicinal and Aromatic Plants

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