In: Aquaculture ISBN: 978 - 1 - 63485 - 563 - 1
Editor: Joanne G. Buchanan © 201 6 Nova Science Publishers, Inc.
Chapter 3
MODELLING OF TASTE-TAINT IN
FISH FARMED IN RECIRCULATING
AQUACULTURE SYSTEMS (RAS)
Priyantha I. Hathurusingha and Kenneth R. Davey
School of Chemical Engineering
The University of Adelaide, AustraliaABSTRACT
Farming of fish with Recirculating Aquaculture Systems (RAS) is
becoming widespread due to diminishing wild-caught supplies. However,
the accumulation of ‘earthy’ or ‘muddy’ off-flavours due to taint
chemical as geosmin (GSM) or 2-methylisoborneol (MIB) in the fish-
flesh of farmed species is a major concern. Inconsistent quality of
farmed-fish has been identified as a major issue in buyer resistance.
Predictive mathematical models, widely used in bio-chemical
engineering, provide a basis for evaluating environmental toxicology and
risk assessments in RAS farmed fish. The use of models to predict taste-
taint chemicals in fish-flesh with growth is a new concept and can be
used to help farmers and researchers in decision making and farm
protocols. In this chapter we discuss taste-taint modelling in RAS farmed
fish including: taste-taint problems in RAS farmed-fish; an overview of
predictive models for chemical congeners in fish-flesh; models for
predicting accumulation of GSM and MIB in fish-flesh; development and
limitations of predictive models; factors to be considered in developing
an adequate model for RAS fish, benefits of models to the supply chain,