Other than bakery bread and the sprouted grain breads, most bagged store breads do have dough conditioner- l-cysteine, mono or diglycerides, or enzymes of various sources. All questionable and most animal derivedIf you don't get an definitive answer from Arnold; I personally would assume it's derived from animal and not eat it, there are many breads out there that don;t contain the unhealthy ingredient.