(1) Starch is a carbohydrate found in potatoes, rice and other foods. In the process of digestion, the body breaks down carbohydrate molecules into small molecules through the action of α -amylase The produced sugar is stored or converted into fat as the energy source of the body.

(2) Solid beverage can inhibit the action of α -amylase and reduce the digestion and absorption of carbohydrates, which is achieved by two-phase white kidney bean extract. Phase 2 can specifically act on starch without affecting carbohydrates that are meaningful to human health (such as carbohydrates in fruits and whole grains). It can reduce the digestion of starch in diet by enzymes, inhibit the absorption of starch, and at the same time block the conversion of starch into sugar, which is directly excreted through the intestine, thus reducing the production of fat and achieving the effects of controlling weight and maintaining normal blood sugar levels.