Table 3.

LC-MS data for peak identification of betalains in red pitaya fruit.

Beta-cyanins	Retention Time (min)	Molecular Formula	λmax (nm)	[M + H]+ (m/z)	MS2 (m/z)	Reference
Betanidin 5-ο-β-sophoroside	3.9	C30H36N2O18	NR	713	551, 389	[27]
Apiosyl-betanin	10.1	C29H36N2O18	NR	683	551.389	[27]
Butyryl-betanin	11.0	C27H28N2O16	NR	637	551, 389	[42]
Betanidin-5-ο-β-glucoside (Betanin)	11.5	C24H26N2O13	535	551.1	389,343	[44]
Hylocerenin (3-hydroxy-3-methyl-glutaryl-betanin)	11.9	C30H27N2O17	NR	695	551, 389	[27]
Iso-Butyryl-betanin	12.5	C27H28N2O16	NR	637	551, 389	[27]
2′-Apiosyl-phyllocactin	12.9	C32H40N2O20	NR	769	683, 551, 389	[27]
Isohylocerenin	13.7	C30H27N2O17	NR	695	551, 389	[27]
2′-Apiosyl-isophyllocactin	13.8	C32H40N2O20	NR	769	683, 551, 389	[27]
Iso-betanidin 5-ο-β-glucoside (Iso-betanin)	16.9	C24H26N2O13	535	551.1	Not reported	[42]
17-decarboxy-betanin	18.28	C23H27N2O11	505	507.16	389.10, 343.09	[45]
Gomphrenin I	19.6	C24H26N2O13	536	551	389	[16]
Isogomphrenin I	21.1	C24H26N2O13	538	551	389	[16]
2-descarboxy-betanin	22.7	C17H17N2O6	498	507	345	[16]
Phyllocactin	23.1	C27H29N2O16	536	637	593, 551, 389	[46]
Isophyllocactin	24.2	C27H28N2O16	538	637	593, 551, 389	[47]