The effect of carbon monoxide (CO) as stunning method in Atlantic salmon (Salmo salar L.) on stress indicators (adrenaline, A; noradrenaline, NAD) and on fillets quality during the shelf life has been investigated. The CO was dissolved into tanks with salmon for 8 and 20 minutes to obtain fish groups CO8 and CO20, respectively. These groups were compared to a non-stressed Control group (C). All the fish were hauled out from the tank and killed by percussion. Adrenaline content of CO20 group was 1.8 and 1.7-fold higher than CO8 and C groups respectively (P<0.001), which exhibited similar values. Noradrenaline content was higher in CO20 than in C group (8.1 vs. 5.4 ng/ml plasma; P<0.0001). The CO treatment resulted in a small significant increase in lightness and yellowness, not altering the overall “natural” colour of the fillet. CO treatment caused a rapid onset of rigor mortis and a small but significant increase in drip loss (P<0.05).
Effect of carbon monoxide for Atlantic salmon (Salmo salar L.) slaughtering on stress response and fillet shelf life / Concollato A.; Parisi G.; Olsen R.E.; Kvamme B.O.; Slinde E.; Dalle Zotte A.. - In: AQUACULTURE. - ISSN 0044-8486. - STAMPA. - 433:(2014), pp. 13-18. [10.1016/j.aquaculture.2014.05.040]
Effect of carbon monoxide for Atlantic salmon (Salmo salar L.) slaughtering on stress response and fillet shelf life
PARISI, GIULIANA;
2014
Abstract
The effect of carbon monoxide (CO) as stunning method in Atlantic salmon (Salmo salar L.) on stress indicators (adrenaline, A; noradrenaline, NAD) and on fillets quality during the shelf life has been investigated. The CO was dissolved into tanks with salmon for 8 and 20 minutes to obtain fish groups CO8 and CO20, respectively. These groups were compared to a non-stressed Control group (C). All the fish were hauled out from the tank and killed by percussion. Adrenaline content of CO20 group was 1.8 and 1.7-fold higher than CO8 and C groups respectively (P<0.001), which exhibited similar values. Noradrenaline content was higher in CO20 than in C group (8.1 vs. 5.4 ng/ml plasma; P<0.0001). The CO treatment resulted in a small significant increase in lightness and yellowness, not altering the overall “natural” colour of the fillet. CO treatment caused a rapid onset of rigor mortis and a small but significant increase in drip loss (P<0.05).File | Dimensione | Formato | |
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