Ball Milling-Ultrasound Modification of Citrus Fiber-Carrageenan Complex for Improving Functional Properties of Salted Egg White
摘要
Effect of ball milling (BM) (6 h) combined with ultrasound (U) (200 and 400 W, 10, 20, 30 min) modified citrus fiber-carrageenan (CFC) on functional properties of salted egg white (SEW). Compared with single BM modified CFC, after 200 W-U-treatment for 10 min of CFC, gel strength, gel water-holding capacity (WHC), surface hydrophobicity, emulsifying activity index (EAI), emulsifying stability index (ESI) and FC of CFC-SEW complex increased by 12.10, 2.60, 43.15, 6.59, 6.71 and 42.71%, respectively, whereas its FS decreased by 6.48%. Fourier transform infrared spectroscopy (FTIR) shown that after BM-U treatment of CFC, the hydroxyl content of CFC-SEW complex was increased. Scanning electron microscope (SEM) demonstrated that SEW was tightly embedded with CFC after BM-U treatment. Thus, addition of BM-U treatment of CFC would be an effective approach for improving functional properties of SEW, possibly expanding the application of SEW with high salt contents in food processing fields.
Graphical Abstract