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

Guzman, Valeska B.¹  Morais, Sérgio A. L. de¹  Napolitano, Danielle R.¹  Nascimento, Evandro A. do¹  Chang, Roberto¹  Duarte, Karina C.¹  Instituto de Química, Uberlândia, Brazil¹  Instituto Nacional de Ciência e Tecnologia em Nano-Biofarmacêutica, Belo Horizonte, Brazil¹  Universidade Federal de Uberlândia, Uberlândia, Brazil¹ 

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

DOI  :  10.1590/S0102-695X2011005000042

来源: Sociedade Brasileira de Farmacognosia

【 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】

Unknown