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Phytochemical composition of Heracleum nepalense D. Don fruit extracts and its activity against the larvae of Aedes albopictus (Diptera: Culicidae)
International Journal of Tropical Insect Science ( IF 1.1 ) Pub Date : 2020-01-08 , DOI: 10.1007/s42690-019-00088-5
Abhisekh Subba , Minu Bharati , Priyanka Rai , Dhiraj Saha

Mosquito borne diseases pose a major threat to human health in India. But, these diseases lack vaccines and proper medication thereby leaving vector management as the best alternative for their control. Moreover, vector control is facing a huge challenge due to insecticide resistance development in them. Phytochemicals seem to have a future scope in ecofriendly vector management programs. Therefore, this study was done to assess the larvicidal activity of 4 different solvent extracts of the fruits of Heracleum nepalense, from the hill region of Darjeeling District of West Bengal against larvae of Aedes albopictus, Skuse. Larval mortality was observed after 24 h, 48 h and 72 h of exposure. Almost all the solvent extracts of the plant showed some amount of mortality. Among them diethyl ether extract showed 100% mortality at 200 ppm within 24 h followed by n-hexane, acetone and methanol extracts. GC-MS analysis showed the presence of different types of terpenoids such as Cadina-1(10), 4 diene (5.44%) and caryophyllene oxide (1.28%) in diethyl ether extract and 5-Caranol, (1S,3R,5S,6R)-(−)- (12.8%) and alpha copaenes (2.19%) in methanolic extract. In addition, diethyl ether extract contained furanocoumarins [(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] which are specially synthesized by plants to defend themselves against herbivores. The outcome of the present study revealed that fruits of Heracleum nepalense possess great potential to be used as larvicide against Aedes albopictus larvae.

中文翻译:

Heracleum nepalense D. Don 果实提取物的植物化学成分及其对白纹伊蚊(双翅目:Culicidae)幼虫的活性

蚊媒疾病对印度的人类健康构成重大威胁。但是,这些疾病缺乏疫苗和适当的药物,从而使病媒管理成为控制它们的最佳选择。此外,病媒控制正面临着巨大挑战,因为它们会产生杀虫剂抗性。植物化学物质似乎在生态友好型病媒管理计划中有一个未来的范围。因此,本研究旨在评估来自西孟加拉邦大吉岭地区山区的 Heracleum nepalense 果实的 4 种不同溶剂提取物对 Skuse 白纹伊蚊幼虫的杀幼虫活性。在暴露 24 小时、48 小时和 72 小时后观察到幼虫死亡率。几乎所有植物的溶剂提取物都显示出一定程度的死亡率。其中乙醚提取物在 24 小时内在 200 ppm 下显示 100% 死亡率,其次是正己烷、丙酮和甲醇提取物。GC-MS 分析表明乙醚提取物中存在不同类型的萜类化合物,例如 Cadina-1(10)、4 二烯 (5.44%) 和石竹烯氧化物 (1.28%),以及 5-Caranol (1S,3R,5S, 6R)-(-)- (12.8%) 和 α-copaenes (2.19%) 在甲醇提取物中。此外,乙醚提取物中含有呋喃香豆素[(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。丙酮和甲醇提取物。GC-MS 分析表明乙醚提取物中存在不同类型的萜类化合物,例如 Cadina-1(10)、4 二烯 (5.44%) 和石竹烯氧化物 (1.28%),以及 5-Caranol (1S,3R,5S, 6R)-(-)- (12.8%) 和 α-copaenes (2.19%) 在甲醇提取物中。此外,乙醚提取物中含有呋喃香豆素[(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。丙酮和甲醇提取物。GC-MS 分析表明乙醚提取物中存在不同类型的萜类化合物,例如 Cadina-1(10)、4 二烯 (5.44%) 和石竹烯氧化物 (1.28%),以及 5-Caranol (1S,3R,5S, 6R)-(-)- (12.8%) 和 α-copaenes (2.19%) 在甲醇提取物中。此外,乙醚提取物中含有呋喃香豆素[(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。28%) 在二乙醚提取物和 5-Caranol 中,(1S,3R,5S,6R)-(-)- (12.8%) 和 α-copaenes (2.19%) 在甲醇提取物中。此外,乙醚提取物中含有呋喃香豆素[(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。28%) 在二乙醚提取物中和 5-Caranol 中,(1S,3R,5S,6R)-(-)- (12.8%) 和 α-copaenes (2.19%) 在甲醇提取物中。此外,乙醚提取物中含有呋喃香豆素[(R)-9-((3,3-Dimethyl-2-oxiranyl)methoxy)-4-methoxyfuro(3,2-g)chromen-7-one (18.11%), Bergapten (4.77%), Phellopterin (2.82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。82%)] 由植物专门合成以抵御食草动物。本研究的结果表明,Heracleum nepalense 的果实具有巨大的潜力,可用作针对白纹伊蚊幼虫的杀幼虫剂。
更新日期:2020-01-08
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