Effect of gender, diet and storage time on the physical properties and sensory quality of sea urchin (Evechinus chloroticus) gonads

Barrens of gold: gonad conditioning of an overabundant sea urchin

“…This is consistent with James et al (2007), who found that urchins with poor initial gonad quality benefited more from gonad conditioning than urchins with higher initial gonad quality. Improvement in gonad quality from an artificial diet contrasts with numerous studies where algal diets produced roe of better colour than artificial diets (Shpigel et al 2004, Phillips et al 2009, Eddy et al 2012, Cyrus et al 2013). However, gonad conditioning did not improve the overall gonad quality of urchins from Barren 1 (Fig.…”

Development of Biopolymers as Binders for Feed for Farmed Aquatic Organisms

“…Pellets made of commercial feed Classic © (hendrix) and 3% agar gave the same results of the Classic © alone, therefore agar did not hamper gonad growth; in addition, urchins fed on Ulva-agar pellets in a 4 weeks rearing trial progressed in the reproductive cycle as those fed on commercial feed, showing comparable gonad indices levels. Regarding gonad sensory quality, a prepared diet with a high content of gelatin gave good results in Evechinus chloroticus (Phillips et al, 2009). On the contrary, in Strongylocentrotus droebachiensis a gelatin-transglutaminase based diet gave poor results in terms of gonad taste (Mortensen et al, 2004), while the best results in terms of gonad colour were obtained with a starch-based pellet by Pearce et al (2002b).…”

“…Numerous binders have been successfully employed in the formulation of feed for different sea urchin species. In many echinoid species gelatin based pellets lead to a greater urchin growth (Fernandez & Pergent, 1998;Daggett et al, 2005) and a higher gonad yield (Pearce et al, 2004;Barker et al, 2006;Phillips et al, 2009) with respect to urchin fed on fresh macroalgae; also a pellet based on gelatin strengthened with the enzyme transglutaminase ( -glutamyltransferase) gave better results in terms of gonad index with respect to Laminaria hyperboreus diet in Strongylocentrotus droebachiensis (Mortensen et al, 2004). Similarly, a feed containing a mixed binder gelatin-sodium alginate supported juveniles growth of Strongylocentrotus droebachiensis better than fresh Laminaria (Kennedy et al, 2007).…”

Characterisation of odour active volatile compounds of New Zealand sea urchin (Evechinus chloroticus) roe using gas chromatography–olfactometry–finger span cross modality (GC–O–FSCM) method

“…Descriptive sensory analysis has been used to differentiate odour and flavour attributes of roe from E. chloroticus with respect to gender (Phillips et al, 2009) and harvest location (Phillips et al, 2010). Proton transfer reaction-mass spectrometry (PTR-MS) analysis revealed that the headspace volatile composition of sea urchin roe also varied with harvest location and gender (Phillips et al, 2010).…”