碩士 / 國立海洋大學 / 食品科學系 / 90 / Abstract
The first part of this research was to study the nature of frozen denature of import Alaska Pollack surimi (75%W.C.) used for this study, as well as the changes of actomyosin (AM) in different stages of fish-gel preparation by combined uses of salt-soluble protein extractability, SH group analysis, DSC, and TSRM. It was found that only 66% of salt-soluble protein could be recovered by extraction, reflecting high frozen induced AM aggregation had occurred. Disappearance of SH group in surimi indicated that strong oxidative denaturation had occurred at M-head. That extremely large endothermic peak of M-tail being of the none frozen denature portion AM. The gel strength improvement achieved from the TGase induced inter-M-tail transamination crosslinking formed during holding treatments.
The second part of this research was to study the changes of fish-gel quality as effect by water, potato starch, and sucrose additions to surimi. Preliminary study proved that the same optimized holding condition could be preserved while surimi being added with additives being held at 25℃ for 0hr, 4.5hr, and 8hr to arrow none, partial, and high amount of TGase induced crosslinking to be formed. Comparison to three kinds of commercial products; Chinese fish-ball, regular kamaboko, and high-grade kamaboko, the fish-gel prepared by using above holding conditions should superior elasticity over the commercial Chinese fish-ball. Among then, fish-gel resulted from 0hr holding posses a texture of slightly weaker hardness and elasticity than commercial regular kamaboko; where as fish-gel resulted from holding for 4.5hr (water 25%~80%, starch 5%~10%) and 8hr (water 40%~100%, starch 5%~10%) could reach for even excess the quality of commercial regular-grade and high-grade kamaboko.
| Identifer | oai:union.ndltd.org:TW/090NTOU0253045 |
| Date | January 2002 |
| Creators | Hou yi an, 侯奕安 |
| Contributors | 龔鳴盛 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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