Influence of different rinse process on grass carp surimi by NMR

The influence of water, saline and alkaline rinsing process on grass carp surimi was studied by NMR and MRI. The results indicated that the water and saline rinse could improve the gel properties of the surimi while the alkaline could reduce it. The three kinds of rinse could all improve the water holding capacity (WHC) and the saline one was the best. The best WHC was all achieved after one time in these three methods. A certain concentration of salt water could dissolve and wash out a portion of the salt soluble protein, but not excessively. Therefore, the optimum method was two rinses with water and a saline rinse for a total of three rinses by using orthogonal experiment.