ผลิตภัณฑ์อาหาร เครื่องดื่ม อาหารสัตว์
เอกสารมาตรฐาน
สหรัฐอเมริกา
AOAC
2011.2
5′-Mononucleotides in Infant Formula and Adult/Pediatric Nutritional Formula: HPLC-UV
2014 (2023)
9
AOAC 2023 Ch. 50.1.42
Sample is dissolved in high-salt solution to inhibit protein and fat interactions. The 5′-mononucleotides—uridine 5′-monophosphate (UMP), inosine 5′-monophosphate (IMP), adenosine 5′- monophosphate (AMP), guanosine 5′-monophosphate (GMP), and cytidine 5′-monophosphate (CMP)—are separated from the sample matrix by strong-anion exchange solid-phase extraction (SPE), followed by chromatographic analysis using a C18 stationary phase with gradient elution, UV detection, and quantitation by an internal standard (IS) technique using thymidine 5′-monophosphate (TMP).