Objective To determine the first-order structure of a recombinant beefy meaty peptide(BMP) by using electrospray ionization mass spectrometry(ESI-MS).Methods Ionization mode:electrospray ionization;detection mode:positive ion;range of ion mass scanning m/z 150~1 000;flow rate of drying gas 5 arb;nebulizer pressure 35 arb;voltages at the outlet of capillary 4.5 kV;fragmentation voltages 100 V;collision induced dissociation voltages 35%;the flow of collisions gas was controlled by electronic flow ...