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. DOI: 10.1007/s13197-019-03910-7


JYU authors or editors


Publication details

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

Journal or series: Journal of Food Science and Technology

ISSN: 0022-1155

eISSN: 0975-8402

Publication year: 2019

Volume: 56

Issue number: 10

Pages range: 4585-4594

Publisher: Springer

Publication country: India

Publication language: English

DOI: http://doi.org/10.1007/s13197-019-03910-7

Open Access: Open access publication published in a hybrid 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.


Keywords: aquaculture; Coregonus lavaretus; flavour; smell; water quality; concentration (chemical properties)

Free keywords: depuration; European whitefish; geosmin; 2-methylisoborneol; RAS farming


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1


Last updated on 2020-18-08 at 13:42