Table 5.
Changes in flavonol content during storage of tested juices/drinks.
| Juice/Drink | |||||
|---|---|---|---|---|---|
| Storage [month] | |||||
| Additive | 0 | 1st | 2nd | 3rd | |
| quercetin-3-O-vicianoside [mg/100 mL] | |||||
| Clarified | No additives | 4.86 ± 0.06 A,a | 4.65 ± 0.10 B,a | 4.36 ± 0.08 C,a | 4.25 ± 0.09 C,a |
| Ascorbic acid | 3.90 ± 0.05 B,b,c | 4.38 ± 0.07 A,a,b | 4.36 ± 0.06 A,a | 4.32 ± 0.13 A,a | |
| Cinnamon extract | 3.76 ± 0.02 B,b,c | 3.74 ± 0.23 B,c | 4.13 ± 0.06 A,a,b | 3.98 ± 0.14 A,B,a | |
| Clove extract | 3.79 ± 0.02 B,C,b,c | 3.68 ± 0.03 C,c | 4.17 ± 0.06 A,a,b | 3.95 ± 0.15 A,B,a | |
| Cloudy | No additives | 4.81 ± 0.12 A,a | 4.41 ± 0.07 A,B,a,b | 4.23 ± 0.34 B,a,b | 4.39 ± 0.23 A,B,a |
| Ascorbic acid | 3.82 ± 0.11 B,b,c | 4.54 ± 0.19 A,a,b | 4.24 ± 0.01 AB,a,b | 4.06 ± 0.28 B,a | |
| Cinnamon extract | 3.99 ± 0.09 B,b | 4.38 ± 0.09 A,a,b | 4.22 ± 0.01 A,B,a,b | 4.01 ± 0.25 A,B,a | |
| Clove extract | 3.68 ± 0.21 B,c | 4.22 ± 0.11 A,b | 3.99 ± 0.00 A,B,b | 3.94 ± 0.09 A,B,a | |
| quercetin-3-O-galactoside [mg/100 mL] | |||||
| Clarified | No additives | 4.28 ± 0.08 A,a | 4.05 ± 0.06 A,B,a | 3.76 ± 0.12 C,a,b | 3.77 ± 0.15 B,C,a |
| Ascorbic acid | 3.96 ± 0.06 A,b | 4.05 ± 0.11 A,a | 3.92 ± 0.05 A,a | 3.83 ± 0.16 A,a | |
| Cinnamon extract | 3.71 ± 0.03 A,b,c | 3.65 ± 0.15 A,B,c,d | 3.54 ± 0.05 A,B,c,d | 3.44 ± 0.10 B,a | |
| Clove extract | 3.76 ± 0.01 A,b,c | 3.69 ± 0.07 A,c,d | 3.62 ± 0.09 A,b,c | 3.64 ± 0.28 A,a | |
| Cloudy | No additives | 4.27 ± 0.12 A,a | 3.86 ± 0.05 B,a,b,c | 3.85 ± 0.01 B,a | 3.78 ± 0.17 B,a |
| Ascorbic acid | 3.81 ± 0.12 A,b,c | 3.97 ± 0.11 A,a,b | 3.76 ± 0.02 A,a,b | 3.57 ± 0.28 A,a | |
| Cinnamon extract | 3.87 ± 0.07 A,b,c | 3.73 ± 0.09 A,B,b,c,d | 3.59 ± 0.02 B,C,b,c,d | 3.45 ± 0.08 C,a | |
| Clove extract | 3.59 ± 0.21 A,c | 3.51 ± 0.07 A,d | 3.45 ± 0.01 A,d | 3.39 ± 0.04 A,a | |
| quercetin-3-O-rutinoside [mg/100 mL] | |||||
| Clarified | No additives | 4.11 ± 0.04 A,a | 3.82 ± 0.29 A,a,b | 3.37 ± 0.08 B,a | 3.31 ± 0.16 B,a |
| Ascorbic acid | 3.71 ± 0.06 A,bc | 3.43 ± 0.07 B,a,b | 3.40 ± 0.03 B,a | 3.47 ± 0.06 B,a | |
| Cinnamon extract | 3.54 ± 0.04 A,c | 3.27 ± 0.19 A,B,b | 3.23 ± 0.03 B,a | 3.18 ± 0.08 B,a | |
| Clove extract | 3.89 ± 0.04 A,a,b,c | 3.61 ± 0.27 A,B,a,b | 3.26 ± 0.02 B,C,a | 3.10 ± 0.07 C,a | |
| Cloudy | No additives | 4.12 ± 0.10 A,a | 3.43 ± 0.02 B,a,b | 3.25 ± 0.34 B,a | 3.51 ± 0.37 A,B,a |
| Ascorbic acid | 3.71 ± 0.13 A,b,c | 3.70 ± 0.27 A,a,b | 3.37 ± 0.00 A,a | 3.27 ± 0.31 A,a | |
| Cinnamon extract | 3.77 ± 0.09 A,a,b,c | 3.52 ± 0.20 A,B,a,b | 3.24 ± 0.02 B,a | 3.11 ± 0.29 B,a | |
| Clove extract | 4.03 ± 0.31 A,a,b | 3.89 ± 0.10 A,a | 3.19 ± 0.01 B,a | 3.21 ± 0.03 B,a | |
| quercetin-3-O-glucoside [mg/100 mL] | |||||
| Clarified | No additives | 2.52 ± 0.05 A,b,c | 2.49 ± 0.02 A,a,b | 2.39 ± 0.04 A,B,b,c | 2.31 ± 0.10 B,b,c,d |
| Ascorbic acid | 2.53 ± 0.03 A,b,c | 2.50 ± 0.02 A,a,b | 2.47 ± 0.02 A,a,b,c | 2.49 ± 0.03 A,a,b,c | |
| Cinnamon extract | 2.37 ± 0.01 A,c | 2.21 ± 0.13 A,c | 2.24 ± 0.02 A,c | 2.21 ± 0.04 A,c,d | |
| Clove extract | 2.74 ± 0.01 A,a | 2.72 ± 0.04 A,a | 2.74 ± 0.01 A,a | 2.55 ± 0.08 B,a,b | |
| Cloudy | No additives | 2.54 ± 0.06 A,b,c | 2.40 ± 0.03 A,b,c | 2.26 ± 0.27 A,c | 2.35 ± 0.06 A,a,b,c,d |
| Ascorbic acid | 2.48 ± 0.08 A,b,c | 2.37 ± 0.15 A,b,c | 2.42 ± 0.00 A,b,c | 2.33 ± 0.16 A,a,b,c,d | |
| Cinnamon extract | 2.47 ± 0.04 A,b,c | 2.24 ± 0.04 A,B,c | 2.25 ± 0.01 A,B,c | 2.10 ± 0.21 B,d | |
| Clove extract | 2.62 ± 0.14 A,a,b | 2.59 ± 0.09 A,a,b | 2.64 ± 0.01 A,a,b | 2.63 ± 0.03 A,a | |
a, b, c, d—means in a column followed by the same small letter are not significantly different (p > 0.05); A, B, C—means in a row followed by the same capital letter are not significantly different (p > 0.05); values are means of three determinations ± SD.