Table 4. Peptide profiling of fermented GOS-enriched skim milk (FGSM)

m/z	Position	Sequence	References
αS1-Casein
1012	1–8	RPKHPIKH	Pisanu et al. (2015)
1140	1–9	RPKHPIKHQ	Albenzio et al. (2017)
1219	25–35	VAPFPEVFGKE	Padghan et al. (2017)
1505	179–192	FSDIPNPIGSENSE
1991	1–17	RPKHPIKHQGLPQEVLN	Wu et al. (2013)
αS2-Casein
1650	101–114	QGPIVLNPWDQVKR	Pisanu et al. (2015)
β-Casein
826	199–206	GPVRGPFP	Zhao et al. (2016)
976	112–119	PKYPVEPF
1001	60–68	YPFPGPIPN	Bottari et al. (2017)
1057	85–93	PPFLQPEVM	Oh et al. (2017)
1100	59–68	VYPFPGPIPN	Eisele et al. (2013)
1126	173–182	VPQKAVPYPQ
1151	145–154	HQPHQPLPPT	Fialho et al. (2018)
1151	199–209	GPVRGPFPIIV	Rodriguez-Figueroa et al. (2012)
1157	132–141	NLHLPLPLLQ	Sommella et al. (2016)
1265	198–209	LGPVRGPFPIIV	Ha et al. (2015)
1282	144–154	MHQPHQPLPPT	Chenoll et al. (2016)
1351	109–119	MPFPKYPVEPF	Padghan et al. (2017)
1364	197–209	VLGPVRGPFPIIV	Ha et al. (2015)
1382	145–156	HQPHQPLPPTVM	Ul Haq et al. (2015)
1393	194–206	QEPVLGPVRGPFP	Villegas et al. (2014)
1414	176–187	KAVPYPQRDMPI
1431	132–143	NLHLPLPLLQSW	Padghan et al. (2017)
1452	81–93	PVVVPPFLQPEVM	Xue et al. (2018)
1469	143–154	WMHQPHQPLPPT	Oh et al. (2016)
1481	108–119	EMPFPKYPVEPF	Thomas et al. (2016)
1513	144–156	MHQPHQPLPPTVM	Cossais et al. (2017)
1556	193–206	YQEPVLGPVRGPFP	Ha et al. (2015)
1718	194–209	QEPVLGPVRGPFPIIV	Ha et al. (2015)
1782	78–93	TQTPVVVPPFLQPEVM
1851	145–160	HQPHQPLPPTVMFPPQ	Tellez et al. (2010)
1874	105–119	KHKEMPFPKYPVEPF	Kalyankar et al. (2013)
1881	193–209	YQEPVLGPVRGPFPIIV	Eisele et al. (2013)
1971	104–119	PKHKEMPFPKYPVEPF
1982	144–160	MHQPHQPLPPTVMFPPQ	Tapal et al. (2016)
2042	103–119	APKHKEMPFPKYPVEPF	Mansor et al. (2013)
2244	101–119	AMAPKHKEMPFPKYPVEPF
κ-Casein
1329	75–85	ARHPHPHLSFM	Qian et al. (2011)
1458	54–65	QFLPYPYYAKPA

GOS, galacto-oligosaccharides; FGSM, fermented GSM (GOS-enriched skim milk).