Table 1.
Chemical composition of thyme waste extract. Total polyphenols content and DPPH activity of thyme waste extract.
| No. | Retention Time RT (time) | Relative Area Percent (%) | Compounds | m/z (I) |
|---|---|---|---|---|
| 1 | 7.05 | 40.88 | Benzoic acid | 105(100); 179(93); 77(93); 135(82); 51(22); 180(13); 136(11); 73(8); 106(7); 75(7) |
| 2 | 10.93 | 11.89 | trans-Cinnamic acid (TMS) | 131(100); 205(95); 103(95); 161(85); 77(74); 75(75); 145(45); 102(43); 135(25); 73(24) |
| 3 | 11.83 | 17.18 | 4-Hydroxybenzoic acid (2TMS) | 73(100); 267(72); 223(68); 193(46); 268(16); 224(15); 282(14); 75(12); 126(10); 91(10) |
| 4 | 15.16 | 10.34 | p-Coumaric acid (TMS) | 73(100); 293(43); 219(40); 75(30); 249(30); 308(24); 179(11); 294 (10); 74(10); 220(8) |
| 5 | 16.40 | 2.55 | Ferulic acid (2TMS) | 73(100); 338(45); 323(20); 75(34); 308(34); 249(30); 293(30); 59 (13); 219(13); 339(12) |
| 6 | 16.70 | 8.74 | Caffeic acid (TMS) | 73(100); 219(68); 396(38); 191(16); 381(13); 397 (13); 220(12); 75(11); 74(8); 249(7) |
| 7 | 17.37 | 3.71 | Sinapic acid (2TMS) | 73(100); 338(57); 368(45); 75(34); 353(32); 232(25); 279(15); 339(15); 59(14); 249(12) |
| 8 | 21.91 | 0.90 | Quercetin (5TMS) | 73(100); 647(29); 648(16); 649(9); 559(8); 74(7); 75(6); 560(3); 147(3); 575(2) |
| Total * | 96.19 | |||
| * Only the most abundant peaks were identified. | ||||
| I: intensity | ||||
| Phenols (mg EAG/g) | Flavones (mg EQ/g) | Dihydroflavonols (mg EE/g) | DPPH (IC50 mg/mL) | |
| 97.50 ± 3.82 | 0.13 ± 0.01 | 1.76 ± 0.24 | 0.093 ± 0.01 | |