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Control of Endogenous Enzyme Activity in Fish Muscle by Inhibitors and Hydrostatic Pressure using RSM
Author(s) -
ASHIE I.N.A.,
SIMPSON B.K.,
RAMASWAMY H.S.
Publication year - 1996
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1996.tb14192.x
Subject(s) - hydrostatic pressure , endogeny , fish <actinopterygii> , enzyme , chemistry , biochemistry , fishery , biology , thermodynamics , physics
Effects of combination treatments involving hydrostatic pressure, pH, and crude α; 2 ‐macroglobulin on muscle protease activity and viscosity were investigated using response surface methodology. Statistical analysis showed the model was very significant, predicting responses with high accuracy. Proteolytic activities were reduced with increasing pressure and inhibitor concentrations while pH elicited a quadratic response. Reducing pH and increasing pressure also reduced viscosity of tissue homogenate, but inhibitor concentration did not affect (p > 0.05) this response. The proteases did not show any tendency to regain activity during 3 weeks storage possibly due to a crude inhibitor in the homogenate and did not seem to have any direct influence on viscosity as shown by a low correlation (r =–0.30). Viscosity progressively increased during this period.