Chemical composition and bioactivity of peel oils from Citrus aurantiifolia and Citrus reticulata and enantiomers of their major constituent against Sitophilus zeamais (Coleoptera: Curculionidae)

被引:58
作者
Fouad, Hany Ahmed [1 ]
da Camara, Claudio A. G. [2 ]
机构
[1] Sohag Univ, Fac Agr, Plant Protect Dept, Sohag 82786, Egypt
[2] Univ Fed Rural Pernambuco, Dept Quim, Rua Dom Manoel Medeiros,Sn 52, BR-52171900 Recife, PE, Brazil
关键词
Biological activity; Citrus essential oils; (R)-Limonene; (S)-Limonene; Maize weevil; REPELLENT; LIMONENE; PLANTS; BIOTRANSFORMATION; INSECTICIDES; EXTRACTS; EFFICACY;
D O I
10.1016/j.jspr.2017.06.001
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Peel oils from Citrus aurantiifolia and C. reticulata cultivated in northeastern Brazil were analyzed using gas chromatography with flame ionization detection and gas chromatography-mass spectrometry. The insecticidal activity of the oils and both enantiomeric forms of the main constituent limonene [(R)(+)-limonene and (S)-(-)-limonene] was evaluated against Sitophylus zeamais under laboratory condition. The results were compared with deltamethrin as the positive control. Chromatographic analysis of the Citrus oils demonstrated limonene to be main constituent, accounting for 38.9% of the C. aurantiifolia oil and 80.2% of the C. reticulata oil. Peel oil from C. reticulata proved to be more toxic to S. zeamais adults in the contact, ingestion and fumigant tests (LC50 - 71.18 mu L mL(-1), 1.52 mu L g(-1) and 41.92 mu L L-1 of air, respectively) than the C. reticulata oil. A non-significant different was found between (R) and (S)-limonene in the contact and fumigant tests. However, (R)-limonene exhibited greater toxicity against S. zeamais than the (S)-limonene during the ingestion assay. Deltamethrin was much more toxic in the contact and ingestion bioassays than the Citrus oils and the two enantiomeric forms of limonene. The C. reticulata oil was more repellent than C. aurantiifolia. In the repellency test, S. zeamais adults were more susceptible to (S)-limonene than (R)-limonene. The results of the present study suggest that these Citrus oils and the two enantiomeric forms of limonene have toxic effects on S. zeamais in different ways (i.e., via the cuticle, digestive system and respiratory system) as well as a behavioral effect (repellency). (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:30 / 36
页数:7
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