Regression analysis of the TPC data gave a shelf life of 15 days and 19 days for AP-prawns and MAP-prawns respectively, using the proposed upper limit of 7 log cfu/g for TPC in marine fish. If the calculation is based on the regression equation for
psychrotrophic bacteria counts, then the shelf life for AP-prawns and MAP-prawns was calculated to be 13 days and 17.6 days, respectively.