"α -amylase inhibitor", commonly known as "starch blocker", is a natural substance that can block the decomposition and absorption of starch in food. It blocks the decomposition and absorption of starch by specifically forming inhibitory complexes with α -amylase in oral cavity and intestine.

Starch blockers contain super-active α -amylase inhibitors, which can inhibit the activity of α -amylase in human body and block its decomposition of starch, so that the starch contained in food ingested by human body cannot be converted into glucose, and the absorption of heat generated by starch foods is blocked, thus effectively controlling postprandial blood sugar, controlling body weight and regulating blood lipids.