Rapid characterization of soy protein and hydrolysates by capillary electrophoresis

Rapid methods for characterizing soy proteins and their hydrolysates by free-zone capillary electrophoresis were developed. The 7S- and 11S-rich protein fractions were separated by capillary electrophoresis (CE). The relationships between degrees of hydrolysis and electropherograms were established. Protein hydrolysates were separated in less than 6 min. Data showed that the CE method can be used effectively for monitoring protein hydrolysis during processing and for fingerprinting various types of protein products.