1'-hydroxy-gamma-carotene + A = 1'-hydroxytorulene + AH2
1'-hydroxy-gamma-carotene + a = 1'-hydroxytorulene + ah2
1'-hydroxy-gamma-carotene + A = 1'-hydroxytorulene + AH2
1'-hydroxy-gamma-carotene + a = 1'-hydroxytorulene + ah2