The Influence of Additives and Frozen Storage on Functional Properties and Flow Behaviour of Fish Protein Isolated from Haddock (Melanogrammus aeglefinus)
Abstract
Fish protein isolates (FPI) were extracted from haddock (Melanogrammus aeglefinus) cut-offs using the pH-shift method. Flow behaviour and some functional properties of FPI containing 19% protein (pH 6.4) and different amounts of salt, sucrose and also polyphosphate stored 12 weeks at -18°C were studied. Additives influenced viscosity, but not flow behaviour. Adding salt and sucrose increased water holding capacity (WHC), but significantly decreased viscosity (Brabender Unit) and whiteness. Using polyphosphate and sucrose did not affect WHC, and whiteness of FPI but it decreased viscosity. Different amounts of additives and frozen storage time changed functional attributes of FPI significantly. The results suggest that the isolated proteins obtained through the pH-shift also need to be preserved against denaturation during frozen storage like surimi
The Influence of Additives and Frozen Storage on Functional Properties and Flow Behaviour of Fish Protein Isolated from Haddock (Melanogrammus aeglefinus)
Abstract
Fish protein isolates (FPI) were extracted from haddock (Melanogrammus aeglefinus) cut-offs using the pH-shift method. Flow behaviour and some functional properties of FPI containing 19% protein (pH 6.4) and different amounts of salt, sucrose and also polyphosphate stored 12 weeks at -18°C were studied. Additives influenced viscosity, but not flow behaviour. Adding salt and sucrose increased water holding capacity (WHC), but significantly decreased viscosity (Brabender Unit) and whiteness. Using polyphosphate and sucrose did not affect WHC, and whiteness of FPI but it decreased viscosity. Different amounts of additives and frozen storage time changed functional attributes of FPI significantly. The results suggest that the isolated proteins obtained through the pH-shift also need to be preserved against denaturation during frozen storage like surimi
Details
| Primary Language | Turkish |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | June 1, 2010 |
| Published in Issue | Year 2010 Volume: 10 Issue: 3 |