Quality Indicators of Northern Shrimp (Pandalus borealis)

QingzhuTVB-N mgN/100g120100806040200-3 -2 -1 0 1 2 3 4 5 6 7Catch dayDaysFigure 7: Total volatile basic nitrogen (TVB-N) (mgN/100g) formation of shrimpstored in different cooling conditions during 6 days storage period. ICE/+: flack iceat 1.5 o C; LIQ/+: liquid ice at 1.5 o C; S-ICE/-: salt-water + ice -1.5 o C; LIQ/-: liquidice at -1.5 o C.On day 1 the TVB-N values for LIQ/- and LIQ/+ had lowered from day 0. The values forICE/+ and S-ICE/- changed very little during day 1. Then the TVB-N value started toincrease but TVB-N for LIQ/- was always the lowest. However in the other two groups,ICE/+ and S-ICE/- that showed the highest TVB-N value, the TVB-N value increased tomore than 70 mg/100g the fourth day of storage.TMA mgN/100g3530252015105ICE/+S-ICE/-LIQ/+LIQ/-S-ICE/-ICE/+LIQ/-LIQ/+0-3 -2 -1 0 1 2 3 4 5 6 7Catch dayDaysFigure 8: Trimethylamine (TMA) (mgN/100g) formation of shrimp stored indifferent cooling conditions during 6 days storage period. 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.UNU-Fisheries Training Programme 21