Evaluation and Utilisation of Fish Protein Isolate Products

putting samples into a hot-air oven (Convotherm OEB/OGB, Germany) at 270 ˚C for 3minutes.2.2.7 Sensory analysisQuantitative descriptive analysis (QDA) was used for evaluation of three fish ball samples.Two sessions were organised for training of panellist at Matis ohf, Reykjavik, Iceland forscaling procedures of sensory attributes of the fish balls under study one week beforeassessment of samples. Twenty sensory characteristics (Table 3) were evaluated by 8trained panelists on a 0-100 point hedonic scale. All fish balls samples were coded withthree-digit random numbers and presented to panelists on a tray in individual booths.Orders of serving were completely randomized. Water was provided between samples tocleanse the palate.2.2.8 Statistical AnalysisFor the sensory attributes a Panel Check statistical software version V1.3.2 was used tostudy significance between samples. For these analyses 192 observations (= 8 assessors × 4time points × 3 treatments × 2 sessions of each assessment) were used.Table 3: Selected attributes for sensory evaluation of fish balls after training of panellistsAttributesDefinitionsSmellAppearancesTextureFlavourSpicyFatRancidFishFrozen storageWrinkleUneven colour (outside)Uneven colour (inside)Colour (inside)SoftnessCohesivenessJuicinessGrainyRubberySpicyFishFrozen storageRancidFatSoapyInside balls: smell of spices, onion, etc.Inside balls: smell of fat from frying.Inside balls: rancid smell can remind of cardboard, paints, nuts, etc.Inside balls: fish smell.Inside balls: smell from frozen storage, old fish, etc.Wrinkle on the surface of the balls.Surface: Nothing (even colour), Much (uneven colour)Inside balls: Nothing (even colour), Much (uneven colour)Inside balls: Is the colour light or dark?Outside & inside: Softness in the first bite.Inside balls: Little (easy to take apart with a fork), Much (the inside of balls is firm).Outside & inside when chewing: Dry (sample draws liquid from mouth), Juicy (samples gives away liquid).Inside balls: when rubbed against palate with tongue, grainy reminds of couscous or sand.Outside & inside: when chewing rubbery, springy.Outside & inside: flavour of spices or onion.Outside & inside: fish flavour.Outside & inside: flavour from long frozen storage.Outside & inside: sign of decay.Outside & inside: fat flavour from frying.Soapy, chemical flavour.64