来自白香蜂草的芳樟醇：精油成分及对映体纯度的重现性研究
Linalool from Lippia alba: study of the reproducibility of the essential oil profile and the enantiomeric purity.
作者信息
Siani Antonio C, Tappin Marcelo R R, Ramos Mônica F S, Mazzei José L, Ramos Maria Conceição K V, De Aquino Neto Francisco R, Frighetto Nélson
机构信息
Laboratório de Química de Produtos Naturais, Instituto de Tecnologia em Fármacos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro, RJ, Brazil, 21041-250.
出版信息
J Agric Food Chem. 2002 Jun 5;50(12):3518-21. doi: 10.1021/jf011592n.
A new chemotype of the aromatic Verbenaceae species Lippia alba Mill. N. E. Br. from southeastern Brazil has recently been shown to have a high content of linalool in the leaf essential oil. Vegetative propagation of this chemotype was conducted at six different locations in Brazil, and the variation of the content and the optical purity of linalool in the oils were verified. Yields (0.6-0.9%, hydrodistillation), chemical composition, linalool content, and optical purity of the oils from all the plants were compared, using GC-FID, GC-MS, chiral chromatography, and retention index calculation. No plant exceeded the matrix in linalool content (46.5 to 90.7%), and the chemical profile of the oils was the same for all the samples. Purification of linalool to a content close to 100% was effected by vacuum distillation of the crude oil. Chiral analysis showed exclusively the presence of S-linalool in all the crude oils and in the distilled samples.
巴西东南部唇形科芳香植物白鳞紫苏（Lippia alba Mill. N. E. Br.）的一种新化学型最近被证明其叶精油中芳樟醇含量很高。该化学型在巴西的六个不同地点进行了营养繁殖，并对精油中芳樟醇含量和光学纯度的变化进行了验证。使用气相色谱 - 火焰离子化检测（GC - FID）、气相色谱 - 质谱联用（GC - MS）、手性色谱和保留指数计算，比较了所有植株精油的产量（0.6 - 0.9%，水蒸馏法）、化学成分、芳樟醇含量和光学纯度。没有植株的芳樟醇含量超过基质（46.5%至90.7%），并且所有样品的精油化学特征相同。通过对原油进行真空蒸馏，将芳樟醇纯化至含量接近100%。手性分析表明，所有原油和蒸馏样品中仅存在S - 芳樟醇。
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