Journal
CARBOHYDRATE POLYMERS
Volume 273, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2021.118586
Keywords
Rice proteins; Carboxymethyl cellulose; Substitution degree; High internal phase Pickering emulsions; 3D printing
Categories
Funding
- National Natural Science Foun-dation of China [31901602, 31778198]
- Natural Sci-ence Foundation of Jiangsu Province, China [BK20180614]
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This study utilized high internal phase Pickering emulsions stabilized by protein-polysaccharide complexes as inks for food-grade three-dimensional printing (3DP), showing outstanding biphasic wettability and interfacial tension reduction. By tuning the properties of the complexes, the HIPPEs exhibited controllable injectability and printability during 3DP, with RCs stabilized HIPPEs showing favorable printing resolution, hardness, adhesiveness, and chewiness.
In this study, high internal phase Pickering emulsions (HIPPEs) stabilized by protein-polysaccharide complexes were used as inks for food-grade three-dimensional printing (3DP). The complexes (RCs) structured by synergistic interactions between rice proteins (RPs) and carboxymethyl cellulose (CMC) displayed outstanding biphasic wettability with excellent ability to reduce the oil/water interfacial tension. The interfacial structures formed by RCs provided a steric barrier and sufficient electrostatic repulsion, preventing droplet coalescence against heating treatment as well as long-term storage. Moreover, the rheological behaviors of the HIPPEs can be tuned by the substitution degree (DS) of CMC for tailorable hydrophobic/hydrophilic properties of RCs, allowing their controllable injectability and printability during 3DP. The HIPPEs stabilized by RCs with a DS 1.2 showed the most favorable printing resolution, hardness, adhesiveness, and chewiness. Associating the hydrophobic RPs with hydrophilic CMC, our study enabled on-demand amphiphilicity of RCs for effective stabilization of HIPPEs that can be manipulated for 3DP.
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