What are the tender meat powder and stone powder used in hotels?

Tender meat powder is a kind of chemical stone powder.

Tender meat powder is an additive to improve the taste of meat, which can improve the tenderness of meat. You can't use it every day.

Phosphate can activate protease in meat, destroy muscle fiber and make beef tender; Protease is a common component of tender meat powder, which can improve the tenderness of meat. Nitrite can inhibit the growth of Botox and make the color brighter. This is harmful to health.

Stone powder is used to make glass.