Abstract
This study investigated the impact of hydrolyzed plant proteins on the physical, thermal, and rheological properties of rice flour (RF) for protein fortification for the elderly and general food systems. Faba bean protein concentrate and chickpea flour were first treated with polysaccharide hydrolyzed enzymes (control; CTFP and CTCF, respectively) and subsequentially with protease hydrolyzed enzymes (hydrolyzed protein material; HZFP and HZCF, respectively). The addition of CTFP and HZFP enhanced the swelling power of RF, whereas the CTCF and HZCF exhibited the opposite trends. Adding all controls and hydrolyzed protein materials to RF increased the solubility and gelatinization temperature and decreased the gelatinization enthalpy. The HZFP addition successfully developed the pasting viscosity of RF, whereas the others did not. The RF-HZFP mixture had a higher peak viscosity than RF but lower trough, breakdown, final, and setback viscosities. These findings suggest that the controls and hydrolyzed protein materials studied here could be used as sources for protein fortification of foods, particularly for the elderly, with minimal changes in textural and rheological characteristics, thereby contributing to the development of nutritious and palatable food products.
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