کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5768855 | 1628521 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Good quality fish protein isolate (FPI) and surimi can be made from 3-mo frozen tilapia.
- FPI was more sensitive to salt addition and heating than surimi based on the degree of unfolding.
- The effect of salt on gelation is different between FPI and surimi made from tilapia.
The effect of frozen storage on the biochemical and physical characterization of fish protein isolate (FPI) and surimi made from tilapia was elucidated: tilapia frozen for 3Â mo can be used like fresh fish in the processing of FPI and surimi. The Ca2+ATPase activity continuously reduced throughout the frozen storage up to 3Â mo; however, the diminishing trend of Ca2+ATPase activity was slow. According to storage modulus (Gâ²), storing whole fish frozen for 3Â mo did not affect the gelling ability of FPI and surimi with 0% salt. The comparable results were observed by surface hydrophobicity, surface reactive sulfhydryl content, and differential scanning calorimetry. The addition of salt into FPI induced higher degrees of denaturation before gelation compared to surimi. Our results suggested that frozen tilapia, if stored up to 3Â mo, can be used to make good quality FPI and surimi.
Journal: LWT - Food Science and Technology - Volume 77, April 2017, Pages 200-207