Table 1.
Antioxidant activities of the ethanolic extracts of selected Lamiaceae species and their phenolic acid constituents.
| Sample | Voucher number (FGHR) |
Plant part used | Extract yield a | DPPH radical scavenging activity | Total antioxidant capacity (mg TE/g) |
|---|---|---|---|---|---|
| IC50 (μg/mL) | |||||
| Medicinal plant | |||||
| Acinos arvensis (Lam.) Dandy | L0111 | Aerial part | 15.47 | 17.50 ± 0.42 | 254.97 ± 2.68 |
| Calamintha grandiflora (L.) Moench | L0141 | Aerial part | 5.80 | 10.75 ± 0.22 | 609.03 ± 0.38 |
| Calamintha officinalis Moench | L0142 | Aerial part | 9.02 | 16.45 ± 0.32 | 650.65 ± 3.44 |
| Calamintha sylvatica Bromf. | L0143 | Aerial part | 11.62 | 18.61 ± 0.50 | 449.84 ± 3.82 |
| Clinopodium vulgare L. | L0151 | Aerial part | 7.98 | 17.39 ± 0.13 | 473.62 ± 1.53 |
| Lavandula angustifolia Mill. | L1101 | Flower | 11.05 | 31.62 ± 0.84 | 577.95 ± 13.76 |
| Lavandula x intermedia Emeric ex Loisel. | L1102 | Flower | 16.86 | 43.97 ± 0.47 | 439.03 ± 15.29 |
| Marrubium incanum Desr. | L1141 | Aerial part | 4.31 | 11.82 ± 0.33 | 502.54 ± 1.15 |
| Melissa officinalis L. | L1151 | Leaf | 5.79 | 7.74 ± 0.01 | 855.78 ± 6.12 |
| Mentha longifolia (L.) Huds. | L1173 | Aerial part | 7.34 | 8.43 ± 0.28 | 830.38 ± 6.12 |
| Mentha pulegium L. | L1176 | Aerial part | 7.52 | 24.27 ± 0.21 | 518.49 ± 22.17 |
| Mentha x piperita L. | L1175 | Leaf | 5.62 | 8.88 ± 0.13 | 790.38 ± 19.11 |
| Micromeria croatica (Pers.) Schott | L1181 | Aerial part | 7.24 | 29.48 ± 0.51 | 530.11 ± 26.37 |
| Micromeria graeca (L.) Benth. ex Reich. | L1184 | Aerial part | 7.42 | 8.79 ± 0.01 | 580.11 ± 3.06 |
| Micromeria juliana (L.) Benth. ex Rchb. | L1185 | Aerial part | 4.69 | 17.52 ± 0.33 | 403.62 ± 21.79 |
| Micromeria thymifolia (Scop.) Fritsch | L1189 | Aerial part | 6.67 | 6.53 ± 0.13 | 478.49 ± 7.64 |
| Origanum vulgare L. | L1202 | Aerial part | 13.47 | 4.19 ± 0.04 | 803.89 ± 0.76 |
| Rosmarinus officinalis L. | L1241 | Leaf | 19.32 | 5.06 ± 0.01 | 602.00 ± 3.44 |
| Salvia officinalis L. | L1259 | Leaf | 12.40 | 4.81 ± 0.30 | 838.22 ± 12.61 |
| Satureja montana L. | L1263 | Aerial part | 7.39 | 9.95 ± 0.06 | 717.41 ± 1.53 |
| Satureja subspicata Bartl. ex Vis. | L1264 | Aerial part | 17.60 | 3.08 ± 0.04 | 406.59 ± 19.11 |
| Teucrium arduini L. | L1301 | Aerial part | 12.48 | 18.06 ± 0.68 | 530.11 ± 30.96 |
| Teucrium chamaedrys L. | L1304 | Aerial part | 11.34 | 5.97 ± 0.11 | 792.81 ± 11.85 |
| Teucrium montanum L. | L1308 | Aerial part | 14.44 | 7.78 ± 0.13 | 771.19 ± 8.03 |
| Teucrium polium L. | L1309 | Aerial part | 15.67 | 5.90 ± 0.12 | 589.30 ± 14.52 |
| Thymus vulgaris L. | L1318 | Aerial part | 7.25 | 12.27 ± 0.07 | 679.83 ± 12.96 |
| Phenolic acid constituent | |||||
| Rosmarinic acid | 1.01 ± 0.07 | 1894.84 ± 10.51 | |||
| Chlorogenic acid | 1.69 ± 0.02 | 1240.65 ± 59.24 | |||
| Caffeic acid | 0.36 ± 0.03 | 1940.38 ± 5.35 | |||
| Ferulic acid | 3.56 ± 0.36 | 1923.62 ± 0.20 | |||
| Trolox (referent antioxidant) | 1.99 ± 0.03 | - |
a Extract yield expressed as percentage weight of air-dried plant material.