Chemical composition and fumigant toxicity of essential oil from Thymus daenensis against two stored product pests

Q3 Agricultural and Biological Sciences

Journal of Crop Protection Pub Date : 2016-07-01 DOI:10.18869/MODARES.JCP.5.2.243

Azadeh Jarrahi, S. Moharramipour, S. Imani

{"title":"Chemical composition and fumigant toxicity of essential oil from Thymus daenensis against two stored product pests","authors":"Azadeh Jarrahi, S. Moharramipour, S. Imani","doi":"10.18869/MODARES.JCP.5.2.243","DOIUrl":null,"url":null,"abstract":"Plant essential oils and their constituents are recognized as proper alternatives to fumigants. Thymus daenensis Celak is one of these plants that have medicinal properties and is endemic to Iran. The essential oil was isolated by hydrodistillation from dry leaves using a modified clevenger-type apparatus and the chemical composition of the oil was assessed via GC and GC-MS. Fourteen compounds (100% of the total composition) were identified. Thymol (57.4%), carvacrol (9.8%), β-caryophyllene (6.9%), γ-terpinene (6.7%) and p- cymene (6.3%) were found to be the major compounds of the essential oil. The fumigant toxicity of the essential oil was tested against 1-3 days old adults of Callosobruchus maculatus (F.) and Sitophilus granarius (L.) at 27 ± 1 °C and 65 ± 5% R. H. in darkness. The mortality of adults was tested at different concentrations (28.12, 40.62, 53.12 and 65.62 µl/l air) and different exposure times. At the highest concentration (65.62 µl/l air), T. daenensis oil caused 90 and 60% mortality with a 3 h exposure on C. maculatus and S. granarius, respectively. Based on LC50 values, C. maculatus (4.22 µl/l air) was significantly more susceptible than S. granarius (6.55 µl/l air). These results show the efficacy of T. daenensis oil for stored-products protection.","PeriodicalId":15396,"journal":{"name":"Journal of Crop Protection","volume":"5 1","pages":"243-250"},"PeriodicalIF":0.0000,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Crop Protection","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18869/MODARES.JCP.5.2.243","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}

引用次数: 7

Abstract

Plant essential oils and their constituents are recognized as proper alternatives to fumigants. Thymus daenensis Celak is one of these plants that have medicinal properties and is endemic to Iran. The essential oil was isolated by hydrodistillation from dry leaves using a modified clevenger-type apparatus and the chemical composition of the oil was assessed via GC and GC-MS. Fourteen compounds (100% of the total composition) were identified. Thymol (57.4%), carvacrol (9.8%), β-caryophyllene (6.9%), γ-terpinene (6.7%) and p- cymene (6.3%) were found to be the major compounds of the essential oil. The fumigant toxicity of the essential oil was tested against 1-3 days old adults of Callosobruchus maculatus (F.) and Sitophilus granarius (L.) at 27 ± 1 °C and 65 ± 5% R. H. in darkness. The mortality of adults was tested at different concentrations (28.12, 40.62, 53.12 and 65.62 µl/l air) and different exposure times. At the highest concentration (65.62 µl/l air), T. daenensis oil caused 90 and 60% mortality with a 3 h exposure on C. maculatus and S. granarius, respectively. Based on LC50 values, C. maculatus (4.22 µl/l air) was significantly more susceptible than S. granarius (6.55 µl/l air). These results show the efficacy of T. daenensis oil for stored-products protection.

查看原文本刊更多论文

麝香精油对两种储存品害虫的化学成分及熏蒸毒性研究

植物精油及其成分被认为是熏蒸剂的适当替代品。麝香草(thyymus daenensis Celak)是这些具有药用价值的植物之一，是伊朗特有的。采用改良的clevenger型蒸馏装置从干叶中提取精油，并通过气相色谱和气相色谱-质谱分析了精油的化学成分。鉴定出14个化合物(占总成分的100%)。其中百里酚(57.4%)、香芹酚(9.8%)、β-石竹烯(6.9%)、γ-松蒎烯(6.7%)和对伞花烃(6.3%)为主要成分。在27±1℃、65±5% rh条件下，对1 ~ 3日龄黄斑斑斑斑斑象成虫(Callosobruchus maculatus, F.)和粗象(Sitophilus granarius, L.)进行熏蒸毒性试验。分别在28.12、40.62、53.12和65.62µl空气中检测不同浓度和不同暴露时间下的成人死亡率。在最高浓度(65.62µl/l空气)下，丹参精油对斑点棘球蚴和粗粒棘球蚴3 h的死亡率分别为90%和60%。基于LC50值，maculatus(4.22µl/l空气)的敏感性显著高于S. granarius(6.55µl/l空气)。结果表明，丹参油对贮藏产品具有一定的保护作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Crop Protection Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： Journal of Crop Protection is one of the TMU Press journals that is published by the responsibility of its Editor-in-Chief and Editorial Board in the determined scopes. Journal of Crop Protection (JCP) is an international peer-reviewed research journal published quarterly for the purpose of advancing the scientific studies. It covers fundamental and applied aspects of plant pathology and entomology in agriculture and natural resources. The journal will consider submissions from all over the world, on research works not being published or submitted for publication as full paper, review article and research note elsewhere. The Papers are published in English with an extra abstract in Farsi language.