The color values (i.e., the CIE L*, a*, and b* values) of the gelatin samples were measured using a colorimeter (Minolta Chroma meter CR-400; Minolta Ltd., Japan; illuminate C was calibrated using a white plate; L* = +97.83, a* = −0.43, and b* = +1.98). The CIE L*, a*, and b* values represent the mean intensity of lightness, redness, and yellowness, respectively.
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