Application of 31P NMR for added polyphosphate determination in pork meat
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Aneta Jastrzębska
und
Edward Szłyk
Abstract
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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© 2009 Institute of Chemistry, Slovak Academy of Sciences
Artikel in diesem Heft
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Artikel in diesem Heft
- GC-MS analyses of flower ether extracts of Prunus domestica L. and Prunus padus L. (Rosaceae)
- A novel kinetic-spectrophotometric method for determination of nitrites in water
- Characterization of recombinant antibodies for detection of TNT and its derivatives
- Improvements in the selection of real components forming a substitute mixture for petroleum fractions
- Chemical evaluation of seeded fruit biomass of oil pumpkin (Cucurbita pepo L. var. Styriaca)
- Application of 31P NMR for added polyphosphate determination in pork meat
- Estimation of composition, coordination model, and stability constant of some metal/phosphate complexes using spectral and potentiometric measurements
- Synthesis, characterization, and anti-tumor activities of some transition metal(II) complexes with podophyllic acid hydrazide
- Artificial neural network prediction of steric hindrance parameter of polymers
- Immobilization of porphyrins in poly(hydroxymethylsiloxane)
- Preparation and characterization of porous cordierite for potential use in cellular ceramics
- Characterization of NiFe2O4 nanoparticles synthesized by various methods
- QSAR analysis of 1,3-diaryl-2-propen-1-ones and their indole analogs for designing potent antibacterial agents
- QSAR study of 2,4-disubstituted phenoxyacetic acid derivatives as a CRTh2 receptor antagonists
- Comparison of isothermal and non-isothermal chemiluminescence and differential scanning calorimetry experiments with benzoyl peroxide
- Wettability of plasma-polymerized vinyltriethoxysilane film
- A spectrofluorimetric method for the determination of acitretin in pharmaceuticals
- Fatty acid profile of Trichosanthes kirilowii Maxim. seed oil
- Determination of the enthalpy of fusion of K3TaO2F4 and KTaF6
