Related Experiment Video
Updated: Apr 23, 2026

Author Spotlight: In Vitro Co-Culture System of Pine Shoots and Pinewood Nematode for Studying Host Volatile Response
Published on: September 27, 2024
Chemical composition of Vernonia albicans essential oil from India
Abstract:
The chemical composition of the hydro-distilled essential oil obtained from the flowering aerial parts of Vernonia albicans DC. (Asteraceae) was analyzed by gas chromatography equipped with a flame ionization detector (GC-FID) and gas chromatography coupled with a mass spectrometry (GC/MS). Thirty-nine compounds have been identified, representing 97.5% of the total oil. The major constituents were beta-caryophyllene (34.3%), gamma-amorphene (19.5%), 9-epi-beta-caryophyllene (6.9%), and a-pinene (6.9%). The oil was found to be rich in sesquiterpene hydrocarbons (73.9%).
More Related Videos
05:29Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry
Published on: June 9, 2021
07:13Quantification of Violacein in Chromobacterium violaceum and Its Inhibition by Bioactive Compounds
Published on: August 8, 2025
Related Concept Videos
Aromatic Compounds: Overview
In 1825, Faraday...
NMR Spectroscopy of Aromatic Compounds
Expressing Solution Concentration
Concentrations may be quantitatively assessed using a wide variety of measurement units, each convenient for particular applications. Molarity (M) is a useful concentration unit for many applications in chemistry.
Nomenclature of Aromatic Compounds with a Single Substituent
Volatilization
Nomenclature of Aromatic Compounds with Multiple Substituents
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...