Volatile Components from the Leaves ofHeterotheca inuloides Cass

Abstract

The volatile components of leaves from Heterothecu inuloides Cass. were investigated by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). A total of 42 compounds were identified accounting for 91.8% of the oil. a-Cubebene (22.5%), borneol (8.8%), myrcene (6.6%), caryophyllene epoxide (6.6%), bornyl acetate (6.1%), camphor (5.6%) and trans,-p-ocimene (5.0%) were the major components representing more than 60%. The oil exhibited a characteristic camphoraceous odour.

Fast Ultrasound‐assisted Extraction of Polar (phenols) and Nonpolar (lipids) Fractions in Heterotheca inuloides Cass.

“…Thus, ellagic acid has antiproliferative and antioxidant properties (Roki et al , ), catechin is a flavonoid which acts as an antioxidant in plant metabolism (Hurst, ), syringaldehyde is an aromatic aldehyde in plants (Hurst, ), phenol has antiseptic properties (Dewick, ), guaiacol is an expectorant, antiseptic and anaesthetic (Dewick, ) and coumaric acid has antioxidant and anti‐carcinogenic properties (Morimoto et al , ). All these compounds are present in the extract obtained by the proposed method; the concentrations of them and their individual quantitation had not been calculated in previous studies on H. inuloides , mainly devoted to studying the volatile fraction (Sagrero‐Nieves, ; Gené et al , ; Maldonado‐López et al , ).…”

“…Its turgid stem, generally not very graft, underneaths the inflorescence. It is a perennial plant, and its habitat is ruderal and weedy, disturbed pastures, and cleared forests (Sagrero‐Nieves, ).…”

In vitro nematicidal activity of natural and semisynthetic cadinenes from Heterotheca inuloides against the plant‐parasitic nematode Nacobbus aberrans (Tylenchida: Pratylenchidae)

“…46 Several chromatographic and spectral analytical techniques, including UV-Vis spectroscopy, gas chromatography/ion trap mass spectrometry (GC/ITMS), HPLC coupled with photodiode array detection and electrospray ionization-mass spectrometry (LC/PDA/ESI-MS), have been used for separation, characterization, and qualitative and quantitative determination of the lipidic, phenolic, and volatile fraction from H. inuloides. 37,[47][48][49][50][51] Due to the nature of the metabolites present in the flowers of H. inuloides, maceration with acetone allows the extraction of bioactive compounds with different polarities. Previous studies carried out by our working group show that methanol maceration extracts a large quantity of pigments and highly polar compounds that are not exclusive to the genus.…”