Geosmin and 2-methylisoborneol cause off-flavors in cultured largemouth bass and white sturgeon reared in recirculating-water systems

Earthy and musty off-flavors were present in the fillets of largemouth bass Micropterus salmoides and white sturgeon Acipenser transmontanus grown in partial water-recirculating aquaculture systems. Solid phase microextraction-gas chromatography-mass spectrometry revealed that geosmin and 2-methylisoborneol in the flesh of these fish caused these off-flavors.