In this study, the aim was to determine the influence of ultrasound-assisted phosphorylation on the physicochemical properties of chickpea protein isolates (CPI). Three aspects of the effects of combined treatment on the properties of CPI were assessed: Physicochemical properties, molecular structure, and functional characteristics. The results showed that with the increase of ultrasound intensity, the physicochemical properties and structure of CPI changed significantly. Among them, ultrasound-assisted phosphorylation at 300 W led to a maximum phosphate content of 10.63 μg/mL in the proteins, while increasing the solubility to 89.02% and turbidity to 1.98. In addition, both sulfhydryl contents and surface hydrophobicity were decreased to 10.48 μmol/g and 80.5, accompanied by changes in the secondary structure of the proteins. These findings indicated that ultrasound promoted effective phosphorylation. Hydrophobic aggregation caused by protein unfolding was mitigated by electrostatic stabilization, thereby enhancing the emulsification and foaming properties of CPI. Multiscale analyses demonstrated that ultrasound-assisted phosphorylation effectively enhanced the physicochemical properties and structural characteristics of CPI molecules. The findings of this study provide a theoretical basis for advancing food protein modification technologies.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |