. 2022 Aug 26;27(17):5489. doi: 10.3390/molecules27175489

Table 2.

Effect of intermolecular copigmentation on the estimated half-life time values (t_½, days) of anthocyanins from DBP extracts, with phenolic acids acting as copigments during storage at 20 ℃ in (a) pH 3.0 and (b) pH 6.0 buffer solutions, as measured by HPLC.

(a) pH 3.0	ATC			ATC + Ferulic			ATC + Caffeic			ATC + Chlorogenic			ATC + Rosmarinic
(a) pH 3.0	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²
D3G	0.230	51.2 ± 0.7 ^Ba	0.991	0.558	21.9 ± 0.5 ^Bc	0.999	0.618	18.2 ± 0.2 ^Bd	0.989	0.231	50.4 ± 0.8 ^Ba	0.990	0.258	46.3 ± 1.0 ^Bb	0.994
D3R	0.303	61.8 ± 1.3 ^Ba	0.993	0.868	22.7 ± 0.1 ^Bd	0.999	0.986	18.4 ± 0.1 ^Be	0.988	0.319	57.9 ± 0.6 ^Bb	0.995	0.377	52.5 ± 0.3 ^Bc	0.996
C3G	0.082	208.2 ± 21.4 ^Aa	0.991	0.192	90.5 ± 4.2 ^Ab	0.997	0.184	90.6 ± 1.6 ^Ab	0.994	0.085	216.1 ± 44.0 ^Aa	0.990	0.077	221.8 ± 3.5 ^Aa	0.987
C3R	0.168	49.0 ± 1.3 ^Ba	0.992	0.455	20.0 ± 0.1 ^Bc	0.998	0.476	16.3 ± 0.1 ^Bd	0.999	0.167	49.1 ± 0.0 ^Ba	0.995	0.198	46.0 ± 0.5 ^Bb	0.999
Total ATC	0.777	71.8 ± 1.8 ^a	0.994	2.065	28.3 ± 0.1 ^c	0.999	2.346	22.9 ± 0.2 ^d	0.994	0.781	71.0 ± 0.1 ^a	0.995	0.877	66.1 ± 0.9 ^b	0.995

(b) pH 6.0	ATC			ATC + Ferulic			ATC + Caffeic			ATC + Chlorogenic			ATC + Rosmarinic
(b) pH 6.0	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²	k	t_1/2 (days)	R²
D3G	2.252	4.7 ± 0.1 ^Ba	0.996	2.315	4.4 ± 0.1 ^Ca	0.995	2.817	3.2 ± 0.1 ^Bc	0.998	2.365	3.8 ± 0.1 ^Cb	0.991	3.424	1.6 ± 0.1 ^Cd	0.981
D3R	3.229	5.0 ± 0.1 ^Ba	0.995	3.044	5.2 ± 0.3 ^Ba	0.997	4.489	3.1 ± 0.1 ^Bc	0.996	3.550	4.0 ± 0.1 ^Cb	0.993	5.516	1.7 ± 0.1 ^Cd	0.984
C3G	0.920	9.1 ± 0.6 ^Aa	0.996	0.853	9.6 ± 0.1 ^Aa	0.998	1.158	6.8 ± 0.2 ^Ab	0.995	0.886	8.9 ± 0.2 ^Aa	0.994	1.257	5.5 ± 0.1 ^Ac	0.992
C3R	2.067	4.9 ± 0.1 ^Bb	0.996	1.709	5.7 ± 0.1 ^Ba	0.994	3.218	2.9 ± 0.1 ^Bd	0.985	2.032	4.7 ± 0.1 ^Bc	0.994	3.253	2.4 ± 0.1 ^Be	1.000
Total ATC	8.459	5.3 ± 0.1 ^a	0.996	8.053	5.5 ± 0.1 ^a	0.997	11.158	3.6 ± 0.1 ^c	0.996	8.833	4.6 ± 0.1 ^b	0.994	12.577	2.3 ± 0.1 ^d	0.989

Estimated half-life time (t_½); zero order reaction rate constants (k); correlation coefficient (R²); anthocyanins (ATC). Values with the same letter ^{a,b, c,d} in each column are not significantly different (p > 0.05). Values with the same letter ^{A, B, C,D} in each row are not significantly different (p > 0.05).