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Abstract

The present application provides a method for bluing anthocyanin, including: mixing anthocyanin with a protein to obtain a mixed solution; and bluing the anthocyanin through standing treatment of the mixed solution. The method includes no high hydrostatic pressure treatment. A concentration of the anthocyanin in the mixed solution ranges from 0.05 mM to 0.2 m. The anthocyanin is cyanidin-3-glucoside, the protein is selected from human serum albumin or lysozyme, a final concentration of the human serum albumin, if present, in the mixed solution ranges from 0.1 mM to 2 mM, and a final concentration of the lysozyme, if present, ranges from 0.8 mM to 1.5 mM. Alternatively, the anthocyanin is malvidin-3-glucoside, the protein is selected from human serum albumin or bovine serum albumin, and the final concentration ranges from 0.1 mM to 0.5 mM. A pH value of the mixed solution ranges from 5.0 to 9.0.

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