Piper gaudichaudianum Kunth: Seasonal Characterization of the Essential Oil Chemical Composition of Leaves and Reproductive Organs

Abstract

This study describes a comparative analysis of the essential oil (EO) chemical composition of leaves and reproductive organs (inflorescences and fruits) of

Gas chromatography coupled to mass spectrometry (GC-MS) characterization and evaluation of antibacterial bioactivities of the essential oils from Piper arboreum Aubl., Piper aduncum L. e Piper gaudichaudianum Kunth

“…The main components found in the EOPad also differ with results obtained in previous studies for this species. Almeida et al [28] identified dillapiole (76%) as the main component of the EOPad, diverging with the result found in this study; however, it resembles the result found by Schindler and Heinzmann [29] who identified β-copaen-4-α-ol among the major constituents in the EOPg, a species that is part of the same genus of P. aduncum.…”

Piper Species: A Comprehensive Review on Their Phytochemistry, Biological Activities and Applications

“…According to Schindler and Heinzmann [77] the literature on P. gaudichaudianum EOs reports a generic composition characterized by sesquiterpene hydrocarbons (22.5 to 36.4%), with smaller percentages of oxygenated sesquiterpenoids (0.2 to 5.8%), trace amounts of monoterpene hydrocarbons and no oxygenated monoterpenoids. However, the authors found in their analyses that the EOs from leaves and reproductive organs had a strikingly different composition, and were dominated by the phenylpropanoid class, and in particular by dillapiole, which in fresh leaves was at levels between 68.4% and 69.2%, and in the inflorescences between 83.1% and 87.5% [77]. Myristicin was also present in the reproductive organs in the range of 6.2 to 11.9%.…”

“…Myristicin was also present in the reproductive organs in the range of 6.2 to 11.9%. This high percentage of phenylpropanoids left less room for other constituents, but the main ones were α-humulene (13.3–37.5%), β-caryophyllene (10.4–19.3%), β-pinene (5.6–7.0%), ( E )-nerolidol (5.32–22.4%), β-caryophyllene (8.9%), bicyclogermacrene (7.4%), β-selinene (3.7–15.7%), α-selinene (8.9–16.6%), allo -aromadendrene (7.7%) and linalool (4.8%) [77]. See Table 17.…”

Integrated Characterization of Cuban Germplasm of Cocoyam (Xanthosoma Sagittifolium (L.) Schott)

“…The conglomerate analysis (CA) of all the accessions was carried out with these descriptors from the agglomeration UPGMA hierarchical method (Unweighted Pair-Group Method using Arithmetic Averages), and the Euclidean distance as a measure of dissimilarity [23]. The accuracy of the classification of the PCA was integrated via discriminant analysis (DA) data and assessed the contribution of studied isoenzymatic systems, classification of accessions.…”