Developing a robust and sensitive analytical method to detect off-flavor compounds in fish

• DOI: 10.1007/s11356-022-19738-2
• Publication Date: 2022-03-23T17:02:56Z
• Authors: Petra Camilla Lin...
• Keywords: Geosmin; Commercial fish feed

In recirculating aquaculture systems (RAS), off-flavors that accumulate in fish muscle tissue can be problematic terms of consumer acceptance and the reputation farmed products. Although are not toxic at low concentrations, they often give earthy, muddy, or other unwanted flavors. Traditionally, muddy caused by geosmin (GSM) 2-methylisoborneol (MIB) have been detected, but a variety compounds flavors also identified. this study, method based on solid phase micro extraction (SPME) coupled with gas chromatography mass spectroscopy was developed to identify quantify 14 off-flavor-inducing RAS-farmed fish. The selected were quantified circulating water from pilot-scale RAS rearing rainbow trout (Oncorhynchus mykiss). showed high accuracy precision limits detection quantification ng L-1 level. 13 found which decreased concentrations during 15-day depuration period. This study induced besides GSM MIB. emphasizes need for sufficient off-flavor control RAS, importance an accurate reliable analytical quantitation method.