Determination of β-Galactooligosaccharides by Liquid Chromatography
Table 1
Comparison of GOS content measured in different products using the AOAC method and the new method and comparison of results using both classical and robust statistics.
Sample
Reference value
Results (g/100 g)
Results (g/100 g)
(g/100 g)
Robust
Classical
Mean
SD
Median
SD
Recovery (%)
Mean
SD
Recovery (%)
GOS-1A
37.32
0.56
43.51
1.15
117*
0.001
43.54
1.57
117*
0.001
GOS-1B
36.26
1.32
43.75
1.81
121*
0.006
43.52
1.01
120*
0.007
GOS-2
39.53
0.40
39.42
1.17
99.7
0.861
39.66
1.08
100
0.839
GOS-3A
38.46
0.20
42.38
1.03
110*
0.000
42.27
0.666
110*
0.000
GOS-3B
51.45
0.34
54.11
1.04
105*
0.005
54.13
0.799
105*
0.003
GOS-4
28.70
1.06
26.00
0.274
90.6*
0.038
26.03
0.205
90.7*
0.040
GOS-5
79.02
1.11
66.06
0.382
83.6*
0.000
66.56
1.69
84.2*
0.000
GOS-6
44.66
0.76
43.12
0.555
96.6
0.101
43.06
0.447
96.4
0.088
Indicates recoveries which are significantly different from 100% ().