Digestive stability in simulated gastric fluid of EPSPS protein and PAT protein

Wei sheng yan jiu = Journal of hygiene research
Deqian MaoLichen Yang

Abstract

To study the digestive stability of 5-enolpyruvylshikimate-3-phosphate synthase(EPSPS) protein and phosphinothricina cetyltransferase(PAT) protein in simulated gastric fluid. The component of simulated gastric fluid was based on the method of target protein digestive stability in simulative gastric and intestinal in national standard of the People's Republic of China(Published by the Ministry of Agriculture No. 869-2-2007). The test model of stability of different protein to digestion in Simulated Gastric Fluid was established by dodecyl sulfate, sodium salt-polyacrylamide gel electrophoresis(SDS-PAGE)and western blot. The degradation of EPSPS protein and PAT protein in simulated gastric fluid at different digestion time points were analyzed. The experiment showed that EPSPS protein and PAT protein were completely digested within 15 s in simulated gastric fluid, no any remain of protein was detected by SDS-PAGE and Western blot, indicating that EPSPS protein and PAT protein were easily digested in the simulated gastric. EPSPS protein and PAT protein do not have immunogenicity after digestion with simulated gastric fluid.

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