Table 3.
Phenolic compounds | Retention time (min) | L. concolor | L. leucanthum | L. davidii var. unicolor | L. regale | L. lancifolium | L. pumilum |
---|---|---|---|---|---|---|---|
Gallic acid | 13.57 | 0.94 ± 0.03 b | 0.90 ± 0.02 bc | 0.85 ± 0.06 c | 0.88 ± 0.06 bc | 1.26 ± 0.01 a | 0.85 ± 0.06 c |
Rutinoside | 19.31 | 0.82 ± 0.05 c | 0.97 ± 0.03 b | 0.93 ± 0.02 b | 1.05 ± 0.07 a | ND | 1.09 ± 0.10 a |
(+)-catechin | 23.73 | 1.06 ± 0.10 b | 0.92 ± .001 c | 0.82 ± 0.03 d | 1.26 ± 0.05 a | 1.06 ± 0.02 b | 0.98 ± 0.02 c |
Chlorogenic acid | 24.48 | 2.96 ± 0.06 a | 2.57 ± 0.19 b | 1.14 ± 0.05 c | 0.95 ± 0.04 d | ND | ND |
(−)-epicatechin | 26.84 | 3.71 ± 0.09 a | 1.07 ± 0.03 c | 0.82 ± 0.02 e | 0.99 ± 0.01 d | 1.48 ± 0.03 b | 0.86 ± 0.02 e |
Myricetin | 28.70 | 0.82 ± 0.02 c | 1.02 ± 0.03 c | 2.31 ± 0.28 b | 6.42 ± 0.35 a | 0.81 ± 0.02 c | 1.04 ± 0.08 c |
Rutin | 31.00 | 3.36 ± 0.30 c | 1.35 ± 0.33 e | 0.96 ± 0.03 e | 20.98 ± 1.00 a | 2.36 ± 0.17 d | 4.48 ± 0.20 b |
p-Coumaric acid | 32.63 | 3.91 ± 0.20 b | 1.45 ± 0.06 c | 1.26 ± 0.20 c | 0.80 ± 0.07 a | 4.51 ± 0.31 a | 0.82 ± 0.02 d |
Quercetin | 34.61 | ND | 1.56 ± 0.20 c | 0.89 ± 0.02 d | 6.20 ± 0.20 a | 2.38 ± 0.19 b | 0.96 ± 0.03 d |
Phloridzin | 48.88 | 1.03 ± 0.10 c | 1.02 ± 0.08 c | 0.88 ± 0.04 c | 4.45 ± 0.28 a | 1.92 ± 0.19 b | ND |
Kaempferol | 49.44 | 3.20 ± 0.20 d | 1.45 ± 0.19 e | 1.30 ± 0.20 e | 6.86 ± 0.31 c | 8.03 ± 0.39 b | 12.48 ± 0.90 a |
Values, in mg/100 g dw, are expressed as means ± SD (n = 3). Means in the same line followed by different letters (a–e) are significantly different (p < 0.05). ND = Not detected.