The application discloses a composition for full-component utilization of white
kidney beans and a preparation method and application thereof, and the composition is prepared by separating and extracting white
kidney beans to obtain alpha-
amylase inhibitors (alpha-AI), and the alpha-AI is double-embedded by using self-source wall materials, so that the inhibitory activity is improved to more than 10000 U / g, all components in the composition are derived from the white
kidney beans, the
utilization rate of raw materials is improved to 95%, full extraction and efficient utilization of the white
kidney beans are realized. In addition, the combination of the self-source wall materials and the double-embedded structure improves the stability of the composition, so that the composition still has an activity of more than 85% at 90 DEG C, and can adapt to various
processing environments. The composition further adds dietary fibers, is suitable for adjusting postprandial blood glucose level, can be mixed with
rice flour or other auxiliary materials to prepare food with a
low glycemic index (GI), and is suitable for low GI food development,
weight management, intestinal improvement and the like.