Fig. 1.

SDS-PAGE of a SPI treated with green tea polyphenols and b SPI treated with black tea polyphenols in alkaline treatment: Lane 1-underivatized SPI; Lane 2-SPI-tea polyphenol 0.10% w/w; Lane 3-SPI-tea polyphenol 0.25% w/w; Lane 4-SPI-tea polyphenol 0.50% w/w; Lane 5-SPI-tea polyphenol 0.75% w/w; Lane 6-SPI-tea polyphenol 1.00% w/w