Table 2.
Characteristic bioactive compounds of dried loquat.
| Code | tR (min) | λmax (nm) | MS (m/z)//MS/MS (m/z) ¥ | Compounds |
|---|---|---|---|---|
| Hydroxycinnamic acid derivatives (H) | ||||
| 3-CQA | 3.04 | 321 | 359//191/179/135 | 3-caffeoylquinic acid |
| 3-p-CoQA | 3.75 | 310 | 337//191/173/163 | 3-p-coumaroyl quinic acid |
| 5-CAQ | 3.98 | 321 | 337//191/173/163 | 5-caffeoylquinic acid |
| SG | 4.20 | 299 | 385//162/223 | sinapoyl glucoside |
| 5-p-CoQA | 4.67 | 299 | 337//173 | 5-p-coumaroylquinic acid |
| 5-FQA | 5.53 | 324 | 367//193/191 | 5-feruloylquinic acid |
| Carotenoids (C) | ||||
| Zea | 7.25 | 450/480 | 569//551/533/476 | Zeaxanthin |
| β-C | 8.52 | 454/481 | 536//444 | β-Carotene |
| cis-β-C | 8.71 | 450/474 | 536//444 | 15,15-cis-β-Carotene |
| β-Cp | 10.13 | 446/479 | 791//698/535/443 | β-Cryptoxanthin–palmitate (C16:0) |
| Neox | 11.00 | 447.475 | 601//583/565/393 | Neoxanthin |
| Zeam | 11.97 | 455/478 | 807//551 | Zeaxanthin monopalmitate |
| β-Cpm | 12.13 | 451/482 | 791 | β-Cryptoxanthin monopalmitate |
¥ MS: mass spectrometry; MS/MS: tandem mass spectrometry.