A new approach for quantifying furanodiene and curzerene: a case study on the essential oils of Eugenia uniflora L., Myrtaceae (pitangueira) leaves

Revista Brasileira de Farmacognosia

Roberto Chang¹  Sérgio A. L. De Morais¹  Danielle R. Napolitano²  Karina C. Duarte²  Valeska B. Guzman²  Evandro A. Do Nascimento¹ 

[1] ,Instituto de Química Universidade Federal de Uberlândia Uberlândia MG ,Brazil

关键词: Eugenia uniflora;    pitangueira;    volatile compounds gas;    chromatographic analysis;    thermal rearrangement;    Brazilian savannah;   

DOI  :  10.1590/S0102-695X2011005000042

来源: SciELO

【 摘 要 】

The essential oil obtained from the leaves of Eugenia uniflora L., Myrtaceae, which grows in the Brazilian savannah, was studied by gas chromatography mass spectrometry (GC-MS). Furanodiene (1.2%) was thermally rearranged to curzerene (85.1%) to produce a combined content of 86.3%. GC analysis carried out under mild conditions (with a constant temperature of 100 ºC) showed that the furanodiene concentration was three-fold greater than the curzerene concentration, i.e., the essential oil contained 64.7% furanodiene and 21.6% curzerene. Germacrene B also rearranged to γ-elemene and the concentration of both was 2.3%. Special care should be taken when conventional gas chromatography analysis is used for quantifying compounds that can rearrange at high temperatures.

【 授权许可】

CC BY-NC-ND   
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