Determination of β-Galactooligosaccharides by Liquid Chromatography

Table 7

Composition of different GOS ingredients in terms of oligosaccharide chain length.

Sample	Study	DP2^a	DP3	DP4	DP5	DP6	DP7	DP8
GOS-1A	This study	48.9	39.1	6.19	2.20	1.64	1.39	0.641
GOS-1B	This study	49.1	38.9	6.18	2.19	1.66	1.37	0.610
GOS-2	This study	21.0	68.5	10.2	0.293
GOS-3A	This study	25.1	63.1	11.4	0.403
GOS-3B	This study	25.1	63.1	11.4	0.389
GOS-4	This study	33.0	44.2	17.3	5.51
GOS-5	This study	15.1	51.0	25.0	5.59	2.84	0.474
GOS-6	This study	40.2	35.8	16.3	5.91	1.71	0.105
GOS-H1^e,f	Hernandez^b	41.4*	37.0	14.4	7.23
GOS-H2^e	Hernandez^b	61.6	36.0	2.4	0.00
GOS-H3^e	Hernandez^b	36.8*	39.1	15.8	8.31
GOS-C1^f	Coulier^c	40.4	32.5	15.9	7.2	2.8	0.9	0.3
GOS-A1^f	Albrecht^d	33.3	40.4	17.5	7.0	1.8

DP: degree of polymerization; aDP2 excludes lactose; bdata adapted from Hernández-Hernández et al. [11];  cdata adapted from Coulier et al. [10]; ddata adapted from Albrecht et al. [30]; eGOS-H1, GOS-H2, and GOS-H3 are GOS-1, GOS-2, and GOS-3, respectively, in the original publication; fGOS-H1, GOS-C1, and GOS-A1 are Vivinal GOS; ∗DP2 may be slightly underestimated since ß-D-Gal-(1→2)-D-Glc coelutes with lactose in this study.