Concentrate for producing a cooling and release agent or a cooling and lubricating agent and such cooling and release agents and cooling and lubricating agents

An agent for reusable casting dies such as a steel casting die or for machining with an active substance dissolved in water, the agent comprising:

• a concentrate comprising 10 to 50 wt.-% of a protein based on a weight of the concentrate,
• wherein,
• the concentrate is diluted in water at a ratio of from 1:20 to 1:1,200,
• the protein has a molecular weight of from 1,000 to 7,000 Dalton, and
• the protein is a hydrolysate.