Table 4.

Color differences (ΔL*, Δa*, and Δb*) after 28 days of storage time

Sample	Pigment	∆L*	∆a*	∆b*
Gelatin	Purple pigment	2.83 ± 0.2	− 0.58 ± 0.09	3.08 ± 0.08
	Anthocyanin	− 1.50 ± 0.22	2.72 ± 0.06	5.55 ± 0.01
Yogurt	Purple pigment	0.88 ± 0.06	− 1.43 ± 0.07	1.83 ± 0.08
	Anthocyanin	0.27 ± 0.05	− 0.45 ± 0.01	0.82 ± 0.01