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Insight of soy protein isolate to decrease the gel properties corn starch based binary system: Rheological and structural investigation
DOI:10.1016/j.foodhyd.2024.110750.png)
摘要
En 中文
Dysphagia has become a growing concern for elderly individuals, and starch-based gel foods is expected to become one of the foods easy to swallow. This study investigated the effects of soy protein isolate (SPI) on the solgel behavior, rheological, structural and gel properties of corn starch (CS). SPI raised the gelatinization temperature but reduced enthalpy values, inhibiting the gelatinization of CS. There was a reduction of rheological properties in CS-SPI system, involving apparent viscosity, modulus, and shear structural recovery properties, while SPI increased the Tan delta, creep-recovery, and thixotropic properties. Structural analysis demonstrated that SPI introduction altered the lamellar structure, increased the relative crystallinity, and decreased the hydrogen bond strength and order degree in CS-SPI gels, forming a weaker gel network. As a result, the texture profiles such as hardness, gumminess, and chewiness were decreased from 308.60 g to 64.98 g, 285.44 g-50.62 g, and 279.66 g-50.15 g, respectively, whereas the gel strength of CS-SPI gel decreased from 123.91 g to 45.78 g. This study provided foundations for the production of gel food suitable for swallowing.
Keyword:
Corn starch
Soy protein isolate
Structure
Gel
Texture
期刊
IF:
12.4
论文数:
1.3W
被引数:
9.6W
机构
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