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Composition and Larvicidal Activity of the Oil of Dizygostemon riparius (Plantaginaceae), a New Aromatic Species Occurring in Maranhão, Brazil
Chemistry & Biodiversity ( IF 2.9 ) Pub Date : 2020-10-01 , DOI: 10.1002/cbdv.202000462
Clenilma M Brandão 1 , Kiany Sirley B Cavalcante 1 , Rogério de M Teles 1 , Georgiana E de C Marques 1 , Odair S Monteiro 2 , Eloisa Helena A Andrade 3 , José Guilherme S Maia 2
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Dizygostemon riparius (Plantaginaceae) is a new aromatic herbaceous species occurring in Maranhão State, Brazil. It is used as flavorings to remove domestic animal parasites and preventing mosquitoes. GC and GC/MS were used to analyze its essential oil, and a larvicidal bioassay was performed against Aedes albopictus larvae, a vector of arboviruses in Brazil. endo‐Fenchyl acetate, endo‐fenchol, (E)‐caryophyllene, and caryophyllene oxide were the oil's primary constituents, totalizing 88.0 %. The two morphotypes of D. riparius, with purple and white flowers, did not present a significant difference in the oils’ composition. From a chemotaxonomic point of view, D. riparius oil showed some similarities with other oils of Plantaginaceae, suggesting (E)‐caryophyllene and caryophyllene oxide as possible chemical markers. The oil larvicidal action displayed the lowest and highest mortality percentage at 50 mg/L (2.0 %) and 600 mg/L (88.0 %). The fenchyl acetate and fenchol standards showed a lower and higher mortality percentage at a concentration of 300 mg/L (42.0 % and 26.0 %) and 900 mg/L (96.0 % and 98.0 %), respectively. The present study results with the D. riparius oil point to a new bioproduct with significant larvicidal activity.

中文翻译:

Dizygostemon riparius (Plantaginaceae) 油的成分和杀幼虫活性,这是一种产于巴西马拉尼昂的新芳香物种

Dizygostemon riparius (Plantaginaceae) 是一种新的芳香草本植物,产于巴西马拉尼昂州。用作调味剂,去除家畜寄生虫,防蚊。GC和GC/MS用于分析其精油,并针对巴西的虫媒病毒载体白纹伊蚊幼虫进行了杀幼虫生物测定。乙酸内酯、内苯酚、(E)-石竹烯和石竹烯氧化物是油的主要成分,总计 88.0%。D. riparius 的两种形态类型,具有紫色和白色的花朵,在油的成分上没有显着差异。从化学分类学的角度来看,D. riparius 油与车前子科的其他油有一些相似之处,表明 (E)-石竹烯和石竹烯氧化物可能是化学标记物。在 50 毫克/升 (2.0 %) 和 600 毫克/升 (88.0 %) 时,油杀幼虫作用显示出最低和最高的死亡率百分比。在浓度分别为 300 mg/L(42.0% 和 26.0%)和 900 mg/L(96.0% 和 98.0%)时,乙酸芬酯和苯酚标准品显示出较低和较高的死亡率百分比。本研究结果表明,河豚油是一种具有显着杀幼虫活性的新生物产品。
更新日期:2020-10-01
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