Characterisation of different types of hay by solid‐phase micro‐extraction–gas chromatography mass spectrometry and multivariate data analysis

Abstract

The volatile organic compounds of different ground hay samples from Austria, Italy and Switzerland were collected at 50 degrees C on a Supelco Carbowax Divinylbenzene headspace solid-phase microextraction fibre, separated by capillary gas chromatography on an HP5-ms column running a temperature programme and using helium as carrier gas, detected with a mass sensitive detector and studied with principal component analyses after autoscaling selected variables. The analytes, mainly mono- and sesquiterpenes, were able to cluster differences resulting from the site of production. Coumarin can be used to differentiate hay grown north and south of the main chain of the Alps. Acetic acid is appropriate for distinguishing between hay from Kastelruth and Passeier Valley, two South Tyrolean regions. The average linalool content in aftermath is higher than in hay.

A Comparison of Headspace Solid‐phase Microextraction and Classic Hydrodistillation for the Identification of Volatile Constituents from Thapsia spp. Provides Insights into Guaianolide Biosynthesis in Apiaceae

“…villosa type II have been subjected to new investigative techniques using the mild volatile trapping system SPME (solid phase micro‐extraction). Compared with the classic Clevenger essential oil distillation, SPME‐based techniques are much milder and better preserve the original volatile composition (Christensen, ), and have been shown to be sensitive for detection of hydrocarbon sesquiterpenes (Valtiner et al , ). By using either immersion or headspace (HS) SPME techniques, as reported in this study, total ion chromatograms can be used to report the relative amounts of compounds adsorbed to the fibre under the specific conditions used (Johnson et al , ; Araújo et al , ).…”

Catalytic Fast Pyrolysis: A Review

“…These reactions result in a bio-oil containing over 300 individual compounds [22,26,27]. For more extensive reviews of the elemental and chemical composition of biomass and bio-oil see Yanik et al [28], Branca et al [29], Lu et al [13], Valtiner et al [30], Ralph et al [31], Evans et al [32], Marsman et al [33], and Sipila et al [34].…”

Recent Developments in Solid-Phase Extraction for Near and Attenuated Total Reflection Infrared Spectroscopic Analysis

“…For analytical purposes, SPE is usually performed using a small column or cartridge containing an appropriate packing. As an alternative, membranes loaded with distinct resins can be applied for SPE micro-extraction [7]. In a common practice the adsorbed materials are eluted from the resin with a small amount of solvent.…”