The moisture resistance of Soybean protein isolate( SPI) film was improved through adding glucose or sodium sulfite respectively,also by application ultrahigh-pressure homogenization( UPH) in SPI or ultrahigh-pressure homogenization combined with glucose modification( UPHG). The results showed that the effect of moisture resistance was UPHG > UPH > modified SPI by adding glucose( 0. 1%) > modified SPI by adding sodium sulfite( 0. 1%). The scanning electron microscope( SEM) photographs showed that the loose ...