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首页> 外文期刊>Journal of the Brazilian Chemical Society >Microclimatic factors and phenology influences in the chemical composition of the essential oils from Pittosporum undulatum Vent. leaves
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Microclimatic factors and phenology influences in the chemical composition of the essential oils from Pittosporum undulatum Vent. leaves

机译:小气候因素和物候对Pittosporum undulatum Vent香精油化学成分的影响。树叶

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The essential oil from leaves of a Brazilian specimen of Pittosporum undulatum Vent. was analyzed by means of gas chromatography-mass spectrometry (GC-MS) and NMR analysis after chromatographic separation. The leaves of P. undulatum were collected during one year (January, March, May, July, September and November, 2004) and the obtained essential oils were analyzed. The oil is rich in hydrocarbon monoterpenes and sesquiterpenes, being (+)-limonene the main constituent. It was observed a significant variation on the relative amount of (+)-limonene in these collections, which could be associated to microclimatic parameters (temperature and pluviometric index) despite of phenology of the studied species.
机译:来自巴西Pittosporum undulatum Vent样本叶片的精油。色谱分离后,通过气相色谱-质谱法(GC-MS)和NMR分析法进行分析。在一年内(2004年1月,3月,5月,7月,9月和11月)收集了und。undulatum的叶子,并对得到的精油进行了分析。该油富含烃单萜和倍半萜,是(+)-柠檬烯的主要成分。观察到这些集合中(+)-柠檬烯的相对含量存在显着变化,尽管有所研究物种的物候特征,但这可能与微气候参数(温度和比重指数)相关。

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