期刊
FOOD HYDROCOLLOIDS
卷 112, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2020.106290
关键词
Starch; Gums; Gel properties; Protein secondary structure; Silver carp surimi
资金
- National Key R&D Program of China [2018YFD0400603]
- National Natural Science Foundation of China [31701629, 31972107]
- Liaoning Revitalization Talents Program [XLYC1807133]
The study found that adding single hydroxypropylated cassava starch (HCS), curdlan (CD) or kappa-carrageenan (KC) or their combination (HCK) can improve the gel strength, texture properties, water holding capacity, and whiteness of silver carp surimi. Among them, the most significant improvements were observed in the HCK group. Starch and/or gums also increased hydrophobic interactions and disulfide bonds contents in surimi.
The effects of single hydroxypropylated cassava starch (HCS), curdlan (CD) or kappa-carrageenan (KC) or their combination (HCK) on gel and texture properties, soluble protein content, protein conformation, microstructure and sensory property of silver carp surimi were investigated. Gums increased the peak viscosity and decreased the pasting temperature of HCS. The addition of HCS and/or gums could improve the gel strength, texture properties, water holding capacity (WHC) and whiteness of surimi. Moreover, the increase range in HCK group was the most significant. Starch and/or gums increased hydrophobic interactions and disulfide bonds contents in surimi. According to Raman spectroscopy results, gums promoted the conformational transition of surimi protein from alpha-helix to other three secondary structures, whereas HCS had little effect on surimi protein conformation. Scanning electron microscopy (SEM) photographs showed HCK group had the most compact and ordered network structure. The appearance, color, texture and overall likeness score were significantly increased, whereas odor and taste likeness score were not affected when starch and/or gums was added. Therefore, starch or gums could effectively improve the quality of surimi products, and their combination had more obvious effect.
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