Physical, Textural, and Microstructural Properties of Restructured Adductor Muscles of 2 Scallop Species Using 2 Cold‐binding Systems

This work evaluated the effect of caseinate‐transglutaminase and fibrinogen‐thrombin cold‐set binding systems on physical, textural, and microstructural properties of restructured adductor muscles of 2 commercially important species of scallops found in Mexico, the Pacific calico scallop (catarina scallop; Argopecten ventricosus ) and the giant lions‐paw scallop ( Nodipecten subnodosus ). Proximate composition and surface pH was measured in raw materials. Color, water‐holding capacity, and texture, including the Warner‐Bratzler shear test and texture profile analysis were determined for restructured products and raw material. Results indicate that binders affected color in lions‐paw scallops. Caseinate‐transglutaminase did not affect color of restructured samples of either species. The effect of cold‐set binding systems on the water‐holding capacity was observed only for lions‐paw scallops. In different ways, binders affected texture parameters except for gumminess and adhesiveness. Differences in microstructure of the binder matrices were observed. The caseinate‐transglutaminase matrix exhibited a solid continuous phase and the fibrinogen‐thrombin system exhibited a discontinuous matrix with different levels of aggregation of the material. Results indicated that, not only the restructuring system, but also the species influenced color, water‐holding capacity, and texture of restructured products.