Ultrasonic structural modification of myofibrillar proteins from Coregonus peled improves emulsification properties

• DOI: 10.1016/j.ultsonch.2021.105659
• Publication Date: 2021-07-03T03:47:36Z
• Authors: Xiaorong Deng; Yigang Ma; Yongdong Lei; Xinrong Zhu; Lianfu Zhang; Ling Hu; Shiling Lu; Xin Guo; Jian Zhang
• Keywords: Sonication; Myofibril

This study evaluated the effects of high intensity ultrasonication (HIU, 100, 150, 200, and 250 W) treatment time (0, 3, 6, 9, 12 min) on structure emulsification properties myofibrillar proteins (MPs) from Coregonus peled. These investigations were conducted using an ultrasonic generator at a frequency 20 kHz (ultrasonic probe). Analysis carbonyl content total number sulfhydryl groups showed that HIU significantly improved oxidative modification MPs (P < 0.05). SDS-PAGE profiling significant degradation myosin heavy chain In addition, Fourier transformed infrared spectroscopy (FTIR) revealed altered these treated MP secondary structures, this was due to molecular unfolding stretching, exposing interior hydrophobic groups. Particle size analysis reduced particle sizes. Solubility, capacity, emulsion stability significantly, each decreased with increase in (up min), indicating aggregation prolonged sonication. results indicate could improve C. peled, demonstrating promising method for fish protein processing.