Calva James, Parra Mayerly, Benítez Ángel
Departamento de Química, Universidad Técnica Particular de Loja, San Cayetano alto s/n, Loja 1101608, Ecuador.
Carrera de Bioquímica y Farmacia, Universidad Técnica Particular de Loja, San Cayetano alto s/n, Loja 1101608, Ecuador.
Plants (Basel). 2024 Nov 21;13(23):3272. doi: 10.3390/plants13233272.
L., commonly known as sweet pea, is a plant with a distinctive aroma that can develop in various habitats. An analysis of the aromatic profile of the species was conducted using the HS-SPME (solid-phase microextraction headspace) technique. This study aimed to explore the composition of and variation in the floral scent emissions of . The floral scents from fresh flowers were collected over different months and analyzed using gas chromatography coupled with mass spectrometry on apolar and polar stationary phase columns. In the apolar column, the majority compounds included linalool (19.27-5.79%), α-trans-bergamotene (29.4-14.21%), and phenyl ethyl alcohol (30.01-1.56%), while on the polar column, the predominant compounds included myrcene (13.25%), (E,E)-α-farnesene (26.33-8.16%), α-trans-bergamotene (42.09-24.82%), and others. This investigation was complemented by enantioselective analysis using a chiral phase based in cyclodextrins, which revealed the presence of (1)-(+)-α-pinene, ()-(-)-limonene, ()-(+)-germacrene D, and (R)-(E)-nerolidol as enantiomerically pure components and linalool as a racemic mixture. Notably, the principal component analysis (PCA) and heatmap revealed variations among the chemical compounds collected at different harvest times. This demonstrates that temporal factors indeed impact chemical compound production. Furthermore, research on the aromatic properties of flowers provides a theoretical basis for studying and improving the components of their scent.
L.，通常被称为香豌豆，是一种具有独特香气的植物，能在多种生境中生长。使用顶空固相微萃取（HS-SPME）技术对该物种的香气特征进行了分析。本研究旨在探究L.花香排放物的成分及变化。在不同月份收集鲜花的花香，并使用气相色谱-质谱联用仪在非极性和极性固定相柱上进行分析。在非极性柱上，主要化合物包括芳樟醇（19.27 - 5.79%）、反式-α-佛手柑烯（29.4 - 14.21%）和苯乙醇（30.01 - 1.56%），而在极性柱上，主要化合物包括月桂烯（13.25%）、（E,E）-α-法呢烯（26.33 - 8.16%）、反式-α-佛手柑烯（42.09 - 24.82%）等。使用基于环糊精的手性相进行对映体选择性分析对本研究进行了补充，结果显示存在（1）-（+）-α-蒎烯、（）-（-）-柠檬烯、（）-（+）-吉马烯D和（R）-（E）-橙花叔醇作为对映体纯组分，以及芳樟醇作为外消旋混合物。值得注意的是，主成分分析（PCA）和热图揭示了在不同收获时间收集的化合物之间的差异。这表明时间因素确实会影响化合物的产生。此外，对花朵香气特性的研究为研究和改善其香气成分提供了理论基础。
