酯交换脂肪
回生(淀粉)
微观结构
食品科学
化学
焓
面筋
脂肪替代品
淀粉
生物化学
结晶学
直链淀粉
量子力学
物理
酶
脂肪酶
作者
Tingwei Zhu,Xia Zhang,Bing Li,Hong Wu
标识
DOI:10.1016/j.foodchem.2018.08.047
摘要
To better understand the effect of interesterified blend-based fast-frozen special fat (IBSF) on the quality of frozen dough, the physical properties and microstructure of frozen dough were investigated. The presence of IBSF in the frozen dough increased the gelatinization enthalpy (from 0.16 to 0.26 J/g) and decreased the degree of retrogradation (from 81.3% to 53.8%). The frozen dough added with IBSF also exhibited enhanced extensibility and greater flexibility. Data of DSC and Low-field NMR demonstrated that addition of IBSF significantly reduced the freezable water content and mobility of free water. SEM analysis showed that the starch granules were arranged in the gluten network of frozen dough. Compared with the corresponding physical blend-based special fat and commercial special fat, IBSF not only exhibited favorable influence on the quality of frozen dough, but didn't have trans-fatty acid. These results suggest that IBSF is promising in the preparation of prefrozen fast food.
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