Effects of Gallic Acid by Ultrasound on Physicochemical Properties of Lateolabrax Japonicas Myofibrillar Protein

The effects of different concentrations gallic acid (0 mg/g, 1 2 4 and 6 mg/g) on the physicochemical properties Lateolabrax japonicas myofibrillar protein were studied with 400 W ultrasound. results showed that decreased particle size, total sulfhydryl group, carbonyl dimer tyrosine content Ca 2+ -ATPase activity (P<0.05) protein, however, increased zeta potential. Ultrasonic wave could cooperate to slow down oxidation make solution system more stable. When concentration was indicators most favorable, which improved protein.