Fecha de publicación: 05/01/2023 Fuente: WIPO Rice Disclosed herein are pigment compositions for meat substitutes and meat substitutes including such pigment compositions. The pigment compositions include a thermolabile AlacDFX variant polypeptide, e.g. a thermolabile DFX polypeptide including a sequence at least 80% identical to SEQ ID NO:1 and including a mutation at a position selected from the group consisting of I76, H68, E106, K58, E108, K90, I15, I16, I89, Q88, F102, Y80, Y7, and combinations thereof relative to SEQ ID NO:1. The pigment compositions provide a pink and/or red color to a meat substitute composition that transitions to a brown color after cooking.