Quality Indicators of Northern Shrimp (Pandalus borealis)

Qingzhu250S-ICE/-200Current (nA) ----CO15010050LIQ/-LIQ/+ICE/+0-3 -2 -1 0 1 2 3 4 5 6 7Catch dayDays of storageFigure 17: Responses of CO sensors to the shrimp stored in different condition.ICE/+: flack ice at 1.5 o C; LIQ/+: liquid ice at 1.5 o C; S-ICE/-: salt-water + ice -1.5 o C;LIQ/-: liquid ice at -1.5 o C.The CO formation in S-ICE/- was very rapid but the other treatments (LIQ/-, LIQ/+,ICE/+) showed less CO formation. The highest CO value was measured at about 230 nA.Current (nA)----NH3700600500400300200100LIQ/+LIQ/-S-ICE/-ICE/+0-3 -2 -1 0 1 2 3 4 5 6 7Catch dayDays of storageFigure 18: Responses of NH 3 sensors to the shrimp stored in different condition.ICE/+: flack ice at 1.5 o C; LIQ/+: liquid ice at 1.5 o C; S-ICE/-: salt-water + ice -1.5 o C;LIQ/-: liquid ice at -1.5 o C.The NH 3 formation was different from CO formation where S-ICE/- and ICE/+ showedmuch higher values than LIQ/- and LIQ/+. The NH 3 value on day 1 decreased for ICE/+,LIQ/- and LIQ/+ but started to increased after day 1.UNU-Fisheries Training Programme 29