A1 Journal article (refereed)
Depuration of geosmin- and 2-methylisoborneol-induced off-flavors in recirculating aquaculture system (RAS) farmed European whitefish Coregonus lavaretus (2019)


Lindholm-Lehto, P.C., Vielma, J., Pakkanen, H., & Alén, R. (2019). Depuration of geosmin- and 2-methylisoborneol-induced off-flavors in recirculating aquaculture system (RAS) farmed European whitefish Coregonus lavaretus. Journal of Food Science and Technology, 56(10), 4585-4594. https://doi.org/10.1007/s13197-019-03910-7


JYU authors or editors


Publication details

All authors or editorsLindholm-Lehto, P.C.; Vielma, J.; Pakkanen, H.; Alén, R.

Journal or seriesJournal of Food Science and Technology

ISSN0022-1155

eISSN0975-8402

Publication year2019

Volume56

Issue number10

Pages range4585-4594

PublisherSpringer

Publication countryIndia

Publication languageEnglish

DOIhttps://doi.org/10.1007/s13197-019-03910-7

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/66087


Abstract

European whitefish Coregonus lavaretus has increasingly become an important species for aquatic food production, especially in the Nordic countries. Whitefish is produced in traditional cage and pond operations, and in recirculating aquaculture system (RAS) in which, unfortunately, off-flavors and odors, mostly caused by geosmin (GSM) and 2-methylisoborneol (MIB), can accumulate in fish flesh from the circulating water. GSM and MIB have very low human sensory detection limits and, therefore, often disliked by consumers even at low concentrations. In this study, concentrations of GSM and MIB in RAS farmed European whitefish were studied by an analytical method based on headspace solid phase microextraction and gas chromatography–mass spectrometry. Concentrations were determined in different parts of fish: fillet, neck, belly, and tail during a depuration period and in depuration water. The highest initial concentrations were on average 32 ng g−1 (GSM) and 24 ng g−1 (MIB) in European whitefish fillet and 128 ng L−1 (GSM) and 94 ng L−1 (MIB) in water, respectively. After a depuration period of 16 days, concentrations decreased to below the detection limits, indicating the importance of the depuration period.


KeywordsaquacultureCoregonus lavaretusflavoursmellwater qualityconcentration (chemical properties)

Free keywordsdepuration; European whitefish; geosmin; 2-methylisoborneol; RAS farming


Contributing organizations


Ministry reportingYes

Reporting Year2019

JUFO rating1


Last updated on 2024-08-01 at 17:10