High internal phase Pickering emulsions stabilized by arginine-myosin microgel particles for 3D printing low salt surimi

Abstract

The study investigated the use of arginine-myosin microgel particles(Arg-MMP) to stabilize high internal phase Pickering emulsions (HIPPEs), and the feasibility of adding them to surimi as 3D printing ink. Adding Arg caused myosin to unfold during heating, primarily binding with Arg through hydrogen bonds resulting in a decrease in the zeta potential to −19.9 mV and in particle size to 102.77 nm. Moreover, the introduction of Arg led to an increase in hydrophobicity and sulfhydryl, thereby improving the amphiphilicity of myosin. The size of HIPPEs significantly decreased to 19.9 μm, and exhibited higher rheological properties. The 3D printing confirmed the rich-fat surimi ink had good performance. Processed foods often contain high levels of salt, which cause consumers to develop high blood pressure and cardiovascular diseases. Thus, HIPPEs stabilized with Arg-MMP had excellent properties and were added to surimi, making it a low-salt, customizable 3D printing material.