Acid protease bụ protease nwere nnukwu ọrụ na gburugburu acidic, nke nwere ike imebi njikọ protein peptide ma mebie protein macromolecular n'ime polypeptide ma ọ bụ amino acid. A na-emepụta ya nke ọma site na gbaa ụka microorganism dị ka Aspergillus Niger na Aspergillus oryzae. Ngwaahịa anyị nwere uru dị ịrịba ama, ahọrọ ụdị microbial dị elu, site na usoro ịgba ụka dị elu, iji hụ na ọrụ dị elu na nkwụsi ike nke enzymes.
