European Food Research and Technology

, Volume 244, Issue 5, pp 841–850 | Cite as

Fiber depth, column coating and extraction time are major contributors in the headspace solid-phase microextraction–gas chromatography analysis of Nordic wild mushrooms

  • Heikki Aisala
  • Kaisa M. Linderborg
  • Mari Sandell
Original Paper
  • 77 Downloads

Abstract

The aims of this research were to systematically study how extraction, desorption and gas chromatography (GC) parameters affect the volatiles composition of mushrooms in headspace solid-phase microextraction (HS-SPME) analysis. The study was carried out both with reference compounds and with Cantharellus cibarius Fr. mushroom sample. The experiments were carried out with full-factorial multivariate designs. In the desorption studies, high fiber depth in the GC injector port instead of desorption time or temperature was the most important variable for maximizing peak areas. This could be a function related to the temperature gradient inside the injector as well as a faster transfer of volatiles to the column. Out of the tested fibers, divinylbenzene/carboxen/polydimethylsiloxane (DVB/Car/PDMS) was the most suitable coating for mushroom volatiles. Additionally, extraction time of 45 vs 30 min had a high effect, while doubling the sample volume had a minimal effect. 21 volatiles were identified in C. cibarius. Hexanal and 1-octen-3-ol were the most abundant volatile compounds. Overall, aldehydes and unsaturated C6–C10 alcohols and aldehydes were the most abundant compound groups. This study demonstrated that despite the wide adaptation and history of SPME, fiber injection depth, fiber coating and extraction time are important factors that should still be carefully tested as a part of method development for mushroom-type matrices. Finally, the results of this study show that it is important to look at the extracted gas chromatogram as a whole instead of focusing on a few peaks of interest.

Keywords

Mushrooms Cantharellus cibarius Fr. SPME Volatile compounds 

Notes

Compliance with ethical standards

Funding

This work was supported by the University of Turku Graduate School (UTUGS) and its Doctoral Program in Molecular Life Sciences (DPMLS), Niemi foundation research grant (2015), by Academy of Finland (MS252005) and the project “Innovative Technologies and Concepts for Business Growth Based on Finnish Mushrooms” (3135/31/2015), funded by Tekes (the Finnish Funding Agency for Innovation).

Conflict of interest

The authors declare that they have no conflict of interest.

Human or animal participants statements

This article does not contain any studies with human or animal subjects.

Supplementary material

217_2017_3005_MOESM1_ESM.docx (1.2 mb)
Supplementary material 1 (DOCX 1260 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of Biochemistry, Food Chemistry and Food DevelopmentUniversity of TurkuTurkuFinland
  2. 2.Functional Foods ForumUniversity of TurkuTurkuFinland

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