Quality Indicators of Northern Shrimp (Pandalus borealis)
Quality Indicators of Northern Shrimp (Pandalus borealis)
Quality Indicators of Northern Shrimp (Pandalus borealis)
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Qingzhu4.5 Water contentThe effects <strong>of</strong> storage type and storage time on the changes in absolute water contentduring the storage period <strong>of</strong> whole shrimp are shown in Figure 10.Water/dry material without salt7.00LIQ/-6.506.005.50S-ICE/-ICE/+LIQ/+5.004.504.00-3 -2 -1 0 1 2 3 4 5 6 7daysCatch dayFigure 10: Changes <strong>of</strong> water content <strong>of</strong> shrimp stored in different conditions duringthe 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.Although no significant increases were found in relative moisture content between eachgroup, the results show that the water content increased gradually with storage time frominitial 81.1% gradually to around 85% in all the groups during the storage period (datanot shown). The findings were similar to the report that presented an increase in theweight <strong>of</strong> headed cod in fluid ice by 3% to 6% over a 10-h period (Huidobro et al. 2002.UNU-Fisheries Training Programme 23
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