Lago João Henrique G, Soares Marisi G, Batista-Pereira Luciane G, Silva M Fátima G F, Corrêa Arlene G, Fernandes João B, Vieira Paulo C, Roque Nídia F
Instituto de Química, Universidade de São Paulo, 05508-900 São Paulo, SP, Brazil.
Phytochemistry. 2006 Mar;67(6):589-94. doi: 10.1016/j.phytochem.2005.12.018. Epub 2006 Jan 24.
GC and GC-MS analyses of the volatile oils from Guarea macrophylla (Meliaceae) collected during three different periods in one year (February, June and October) indicated a seasonal variation in chemical composition. Whilst sesquiterpenes were the predominant class of components present in the leaf oil, a seasonal dependent variation in the degree of oxygenation of these compounds was detected, which seemed to be associated with phenological factors. The leaf oil, and fractions thereof, were subjected to GC coupled with electroantennographic detection employing antennae of females of Hypsipyla grandella, an insect pest that attacks several meliaceous species. Five compounds elicited significant responses and these were identified as ledol, 1-cubenol, guai-6-en-10beta-ol, 1-epi-cubenol, and tau-muurolol. The results suggest that these components could be responsible for the attraction of H. grandella to G. macrophylla.
对大叶鹧鸪花（楝科）在一年中三个不同时期（二月、六月和十月）采集的挥发油进行气相色谱（GC）和气相色谱-质谱联用（GC-MS）分析，结果表明其化学成分存在季节性变化。虽然倍半萜是叶油中主要的成分类别，但检测到这些化合物的氧化程度存在季节性依赖变化，这似乎与物候因素有关。将叶油及其馏分进行气相色谱分析，并结合使用大痣小卷蛾雌虫触角进行的电触角检测，大痣小卷蛾是一种攻击多种楝科植物的害虫。有五种化合物引发了显著反应，它们被鉴定为喇叭茶醇、1-古巴醇、愈创木-6-烯-10β-醇、1-表古巴醇和τ-依兰油醇。结果表明，这些成分可能是大痣小卷蛾被大叶鹧鸪花吸引的原因。
