Application of 31P NMR for added polyphosphate determination in pork meat

Jastrzębska, Aneta and Szłyk, Edward Application of 31P NMR for added polyphosphate determination in pork meat Chemical Papers, Vol.63, No. 4, 2009, 414-419

Document type: Článok z časopisu / Journal Article
Collection: Chemical papers  

Author(s) Jastrzębska, Aneta
Szłyk, Edward
Title Application of 31P NMR for added polyphosphate determination in pork meat
Journal name Chemical Papers
Publication date 2009
Year available 2009
Volume number 63
Issue number 4
ISSN 0366-6352
Start page 414
End page 419
Place of publication Poland
Publisher Versita
Collection year 2009
Language english
Subject 270000 Biological Sciences
270100 Biochemistry and Cell Biology
Abstract/Summary Application of 31P NMR for qualitative and quantitative determination of added phosphorus compounds in meat samples is described. Furthermore, usefulness of the proposed method for monitoring of poly- and pyrophosphates hydrolysis in meat is discussed. Calibration curves based on the 31P resonance line areas were elaborated for Na3P3O9, Na5P3O10, Na2H2P2O7, and K4P2O7 resulting in linearity (R 2 = 0.9976, 0.9953, 0.9974, and 0.9524, respectively), detection limits (DL from 0.0018 mol L−1 for Na3P3O9 to 0.0070 mol L−1 for K4P2O7), and quantification limits (QL from 0.0060 mol L−1 for Na3P3O9 to 0.0234 mol L−1 for K4P2O7). The developed procedure was applied for laboratory prepared meat samples and compared with the standard UV-VIS method. The minimal sample pretreatment, obtained within-day precision (CV ≤ 2.0 %) and accuracy (as recovery ≥ 95 %) suggest 31P NMR as an alternative method of phosphorus determination in food analysis.
 
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