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 (%) | P | Mean | SD | Recovery (%) | P | |
| 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% (P < 0.05).