Abstract

Soyasaponins (Ssa) have various biological benefits for the human body. However, they are one of the main factors contributing to the bitter taste of certain soybean-based foods. In this study, the case interaction between pectin and Ssa was investigated by us, as well as the impact of pectin addition on the bitter taste of Ssa. The findings revealed that the thermal stability of Ssa–pectin complexes was higher than that of Ssa–mucin complexes. Fluorescence spectroscopy and isothermal titration calorimetry revealed that pectin interferes with the binding of Ssa to mucin by interacting with Ssa, thereby disrupting the Ssa binding process. As the proportion of pectin increases, the comprehensive score also increases. This confirms that pectin can effectively reduce the bitterness and astringency of Ssa, signifying its importance in further exploration of the mechanism by which Ssa–pectin complexes influence the presentation of bitterness.

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