Noel Sheehan

I. INTRODUCTIONExogenous enzymes are susceptible to denature when exposed to low-pH conditions, normally prevailing in the gastric phase. Hence, resistance to low-pH is considered one of the key criterion for the suitability of commercial phytase enzymes for animal feed application. The pH-stability is assessed in-vitro by measuring the recovery of enzyme activity after exposing enzyme protein to ...