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. 2019 Apr 16;5(4):e01515. doi: 10.1016/j.heliyon.2019.e01515

Table 2.

Identification of anthocyanin in purple-fleshed sweetpotato using UPLC-QTOF-MS.

Peak TR (min) Mass (m/z) Fragment ions (m/z) Formula Identification Content (%)
1 16.90 773.2133 611,449,287 C33H41O21 Cy 3-soph-5-glc 1.07
2 21.00 787.2295 625,463,301 C34H43O21 Peo 3-soph-5-glc 1.15
3 23.66 893.2351 731,449,287 C40H45O23 Cy 3-p-hydroxybenzoyl soph-5-glc 0.81
4 24.26 935.2445 773,449,287 C42H47O24 Cy 3-(6‴-caffeoyl soph)-5-glc 0.55
5 28.50 907.2505 745,463,301 C41H47O23 Peo 3-p-hydroxybenzoyl soph-5-glc 1.00
6 29.00 949.2606 787,463,301 C43H49O24 Peo 3-(6‴-caffeoyl soph)-5-glc 0.70
7 30.51 919.2487 757,449,287 C42H47O23 Cy 3-p-coumaryl soph-5-glc 0.52
8 35.81 963.2757 801,463,301 C42H51O24 Peo 3-feruloyl soph-5-glc 0.71
9 39.59 1097.2769 935,449,287 C51H53O27 Cy 3-dicaffeoyl soph-5-glc 20.58
10 40.11 1055.2686 893,449,287 C49H51O26 Cy 3-caffeoyl-p-hydroxybenzoyl soph-5-glc 10.00
11 43.74 1111.2924 949,449,287 C52H53O27 Cy 3-caffeoyl-feruloyl soph-5-glc 6.00
12 45.12 1081.2818 919,449,287 C51H53O26 Cy 3-caffeoyl- p-coumaryl soph-5-glc 19.99
13 46.25 1111.2931 949,463,301 C52H55O27 Peo 3-dicaffeoyl soph-5-glc 10.12
14 47.49 1069.2816 907,463,301 C50H53O26 Peo 3-caffeoyl-p-hydroxybenzoyl soph-5-glc 16.70
15 53.14 1125.3083 963,463,301 C53H57O27 Peo 3-caffeoyl-feruloyl soph-5-glc 10.10

Cy:cyanidin, Peo:peonidin, soph:sophorside, glc:glucoside.