Surimi-like preparation from freshwater mussel Sinanodonta woodiana

What is it about?

The research analyses the influence of the number of washings and different washing solutions, on the recovery of dry matter and protein in a preparation made from freshwater mussel Sinanodonta woodiana, (Lea, 1834). Washing the homogenate with NaCl solutions and water was more effective on protein extraction than using only water. Two bands of proteins with molecular weights of 270–273 kDa and 42–43 kDa were characterized by the highest band intensity in electropherograms. The DSC analysis showed that on all denaturation curves of the samples there was one main peak of transformation ranging 56.69–62.94°C.

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Why is it important?

The analysis of the results collected by SDS-PAGE and DSC techniques shows that the type of washing agent and the number of washings had a significant influence on the protein content in the surimi-like preparations. The study reveals that one or two washings with water or 0.5% NaCl solution were the most preferable parameters in the production of tested protein preparation. The amount of water used for washing can be limited by using it and the ingredient at a 1:1 ratio or by applying not more than 2 washings. However, these limitations may result in the production of a protein preparation with slightly worse functional properties.

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