During a bioprospection study in the Brazilian Cerrado, samples of Bidens graveolens Mart., an endemic species, were investigated. Chemical and olfactive analyses were performed on the essential oil obtained from fresh leaves of B. graveolens collected in November 2013 (BG1) and May 2014 (BG2). A total of 60 compounds were identified in the essential oil extracted from fresh leaves, by hydrodistillation. The main constituents were identified as monoterpene hydrocarbons, ranging from 86.5% to 89.6%. Limonene was the major compound, accounting for 22.8% in BG1 and 47.7% in BG2. Thirty‐three–oxygenated monoterpenes were identified, comprising about 9% in both essential oils (EO). The attributes described by the panelists are in accordance to the sensorial profile. Myrcene, limonene, epoxy‐myrcene, and limonene dioxide were rated by all panelists. Present at a frequency of 83.3%, α‐pinene, β‐pinene, α‐pinene oxide, and carvone were picked out by five panelists. It is noteworthy that most compounds rated with the highest intensity score belonged to the oxygenated monoterpene class, considered the most expressive terpene class used in perfumery. In general, these compounds were described as presenting green, herb, spicy, fresh, and camphoraceus odors.

中文翻译：

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Bidensgravolens Mart香精油的挥发性和气味活性化合物的表征。（菊科）

在巴西塞拉多（Cerrado）进行生物勘探研究期间，对特有物种Bidensgravolens Mart。的样本进行了调查。化学和嗅觉分析是对从B.gravolens的新鲜叶子中获得的精油进行的分别于2013年11月（BG1）和2014年5月（BG2）收集。通过加氢蒸馏从新鲜叶子中提取的香精油中总共鉴定出60种化合物。鉴定出主要成分为单萜烃，含量为86.5％至89.6％。柠檬烯是主要化合物，在BG1中占22.8％，在BG2中占47.7％。鉴定出了33个氧化的单萜，两种精油（EO）中约占9％。专门小组成员描述的属性根据感觉特征。所有小组成员对月桂烯，柠檬烯，环氧月桂烯和二氧化烯进行了评级。五名小组成员挑选出α-pine烯，β-pine烯，α-pine烯氧化物和香芹酮的出现频率为83.3％。值得注意的是，大多数强度得分最高的化合物都属于氧化单萜类，被认为是香水中使用的最具表现力的萜烯类。通常，这些化合物被描述为具有绿色，草本，辛辣，新鲜和樟脑气味。