期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1524, 期 -, 页码 246-253出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2017.10.007
关键词
Cordia verbenacea; Essential oil; GC-MS; Chiral-GC; prep-MDGC; NMR
Cordia verbenacea D.C. (Boraginaceae, Varronia curassavica Jacq. synonym) is a medicinal plant, native from Brazil, especially the leaves are used in folk medicine. The aim of this study was to extend the characterization of the volatile fraction of the essential oil obtained from this plant, by using GC-FID, GC-MS, and chiral GC. Moreover, to further clarify the composition of the volatile fraction, preparative multidimensional-GC (prep-MDGC) was used to collect unknown compounds, followed by NMR characterization. Specifically, the chemical characterization, both qualitative and quantitative, of the volatile fraction of the essential oil obtained from Cordia verbenacea cultivated in the Minas Gerais area (central area of Braii1) was investigated for the first time. The principal components from a quantitative point of view were ot-pinene (25.32%; 24.48 g/100g) and ot-santalene (17.90%; 17.30 g/100g), belonging to the terpenes family. Chiral-GC data are reported for the enantiomeric distribution of 7 different components. Last, to obtain the complete characterization of the essential oil constituents, prep-MDGC analysis was used to attain the isolation of two compounds, not present in the principal MS databases, which were unambiguously identified by NMR investigation as (E)-ce-santalal and (E)-a-bergamotenal, reported for the first time in Cordia verbenacea essential oil. (C) 2017 Elsevier B.V. All rights reserved.
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