Complex sentence: The product uses beef trimmings left over when meat is cut from the carcass that are warmed and put through a centrifuge to remove fat and treated with ammonia to kill bacteria when a pH of 10 is reached.
Split into simpler sentences: The product uses beef trimmings left over after meat is cut from the carcass. The trimmings are warmed, put through a centrifuge to remove fat and treated with ammonia which kills bacteria when a pH of 10 is reached.