TY - JOUR
T1 - Dynamic rheological studies on salt-soluble proteins from three porcine muscles
AU - Robe, Gerald H.
AU - Xiong, Youling L.
PY - 1993
Y1 - 1993
N2 - The effect of phosphates on the rheological properties of porcine Longissimus dorsi (LD, white), Serratus ventralis (SV, red) and Vastus intermedius (VI, red) muscle salt-soluble proteins (SSP) was examined. Changes in shear stress and viscosity as a function of shear rate of 4 mg/ml SSP suspensions indicated pseudoplastic flow. Viscosity and shear stress values were higher for LD than for SV samples, and 0.25% tripolyphosphate decreased shear stress for both muscle types. SSP suspensions (5–30 mg/ml) gelled during heating from 20 to 74°C and the changes in the dynamic shear storage modulus (G′) greatly depended on the protein concentration and differed for LD, SV and VI proteins. Addition of 0.25–0.60% pyro- and tripolyphosphate reduced G′, but NaCl at comparable ionic strengths did not show this effect. It was shown that red and white muscle SSP exhibited different rheological properties but responded similarly to phosphate treatments.
AB - The effect of phosphates on the rheological properties of porcine Longissimus dorsi (LD, white), Serratus ventralis (SV, red) and Vastus intermedius (VI, red) muscle salt-soluble proteins (SSP) was examined. Changes in shear stress and viscosity as a function of shear rate of 4 mg/ml SSP suspensions indicated pseudoplastic flow. Viscosity and shear stress values were higher for LD than for SV samples, and 0.25% tripolyphosphate decreased shear stress for both muscle types. SSP suspensions (5–30 mg/ml) gelled during heating from 20 to 74°C and the changes in the dynamic shear storage modulus (G′) greatly depended on the protein concentration and differed for LD, SV and VI proteins. Addition of 0.25–0.60% pyro- and tripolyphosphate reduced G′, but NaCl at comparable ionic strengths did not show this effect. It was shown that red and white muscle SSP exhibited different rheological properties but responded similarly to phosphate treatments.
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U2 - 10.1016/S0268-005X(09)80165-3
DO - 10.1016/S0268-005X(09)80165-3
M3 - Article
AN - SCOPUS:21144471532
VL - 7
SP - 137
EP - 146
JO - Topics in Catalysis
JF - Topics in Catalysis
IS - 2
ER -