Research Article
Development of Simple Analytical Method for B-Group Vitamins in Nutritional Products: Enzymatic Digestion and UPLC-MS/MS Quantification
Table 7
Repeatability, reproducibility, and recovery of B-group vitamins in nutritional products.
| | Compound | Parameter | UHT milk | Powdered milk | Nutritional powder |
| | THI | RSDr (%) | 3.2 | 4.8 | 4.3 | | RSDR (%) | 5.7 | 5.8 | 5.1 | | Recovery (%) | 80–105 | 86–105 | 82–103 |
| | RIB | RSDr (%) | 4.7 | 4.5 | 4.5 | | RSDR (%) | 9.7 | 7.2 | 7.1 | | Recovery (%) | 91–102 | 89–105 | 90–107 |
| | NIC | RSDr (%) | 2.9 | 3.8 | 4.3 | | RSDR (%) | 6.0 | 5.5 | 2.1 | | Recovery (%) | 82–107 | 90–105 | 85–95 |
| | NIA | RSDr (%) | 7.1 | 5.0 | 3.3 | | RSDR (%) | 8.1 | 7.4 | 6.6 | | Recovery (%) | 85–104 | 91–98 | 86–89 |
| | PYN | RSDr (%) | 5.6 | 3.2 | 7.0 | | RSDR (%) | 9.8 | 5.8 | 9.5 | | Recovery (%) | 93–101 | 87–103 | 94–102 |
| | PYL | RSDr (%) | 7.3 | 8.5 | 9.1 | | RSDR (%) | 8.2 | 6.1 | 9.1 | | Recovery (%) | 98–105 | 93–106 | 91–96 |
| | PYM | RSDr (%) | 6.9 | 4.3 | 4.2 | | RSDR (%) | 3.5 | 5.1 | 5.4 | | Recovery (%) | 100–105 | 85–99 | 90–96 |
|
|
