Abstract
This study investigated the effects of ultrasound-assisted dry-curing (UADC) on water holding capacity (WHC) and tenderness of pork at different powers and times, and the mechanism was discussed by considering the functional and structural properties of salt-soluble proteins (SSP). The results showed the application of appropriate UADC treatments (300 W, 60 min) have disruptively affected the muscle structure and decreased the size of the SSP particles (P < 0.05), resulting in the increased concentration of active sulfhydryl and surface hydrophobicity (P < 0.05). These modifications facilitated the dissociation of the myofibrillar structure and the dissolution of more connected proteins, which in turn improved the WHC and tenderness of the pork (P < 0.05). Nevertheless, extended periods of high-power UADC treatments negatively affected the WHC and tenderness of dry-cured pork (P < 0.05). In general, using SSP modified by UADC provides a novel strategy for enhancing the WHC and tenderness of dry-cured products.
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