Physicochemical characterization of wheat starch and variation of fatty acid composition in deep-fried dough sticks with different treatments.
Journal of food science(2024)
摘要
The present study investigated the effects of different deep-frying times and temperatures on the amylose content, crystal structure, thermodynamics, and other properties of deep-fried dough sticks. Results showed that the change of amylose content in deep-fried dough sticks during the deep-frying process was positively correlated with time and temperature. Moreover, the deep-frying process of deep-fried dough sticks was accompanied by the formation of starch-lipid complexes that led to the destruction of starch structure. The degreased sample and the oil sample had the same absorption peaks at 2854 and 1746 cm-1, respectively. The melting enthalpy (ΔH) of the starch-lipid complex decreased significantly. In addition, the viscosity of starch reduced as the deep-frying time and temperature increased. Furthermore, it was found that the effect of increasing deep-frying temperature was greater than that of time. PRACTICAL APPLICATION: As a popular deep-fried food, the main component of deep-fried dough sticks is starch. Starch gelatinization, protein denaturation, and interaction among components occurred during deep-frying. At present, there are few studies focusing on the properties of starch in deep-fried dough sticks in the real deep-frying system. Therefore, this study provided a theoretical basis for subsequent research by measuring the effects of different deep-frying conditions on the properties of starch in deep-fried dough sticks.
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