31P NMR Method for Phospholipid Analysis in Krill Oil: Proficiency Testing-A Step toward Becoming an Official Method

2018 ◽  
Vol 95 (12) ◽  
pp. 1467-1474 ◽  
Author(s):  
Elina Zailer ◽  
Yulia B. Monakhova ◽  
Bernd W. K. Diehl
Keyword(s):  
Proficiency Testing ◽  
31P Nmr ◽  
Official Method ◽  
Krill Oil ◽  
Phospholipid Analysis ◽  
Nmr Method

scholarly journals Development and Validation of a Simple Method to Quantify Contents of Phospholipids in Krill Oil by Fourier-Transform Infrared Spectroscopy

Foods ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 41
Author(s):  
Se-Eun Park ◽  
Hyo-Yeon Yu ◽  
Sangdoo Ahn
Keyword(s):  
Fourier Transform ◽  
31P Nmr ◽  
Limit Of Detection ◽  
Fourier Transform Infrared ◽  
Raw Material ◽  
Krill Oil ◽  
Simple Method ◽  
Nmr Method ◽  
Relative Standard ◽  
Ft Ir

This study focuses on developing a quantification method for phosphatidylcholine (PC) and total phospholipid (PL) in krill oil using Fourier-transform infrared (FT-IR) spectroscopy. Signals derived from the choline and phosphate groups were selected as indicator variables for determining PC and total PL content; calibration curves with a correlation coefficient of >0.988 were constructed with calibration samples prepared by mixing krill oil raw material and fish oil in different ratios. The limit of detection (LOD, 0.35–3.29%) of the method was suitable for the designed assay with good accuracy (97.90–100.33%). The relative standard deviations for repeatability (0.90–2.31%) were acceptable. Therefore, both the methods using absorbance and that using second-derivative were confirmed to be suitable for quantitative analysis. When applying this method to test samples, including supplements, the PC content and total PL content were in good agreement with an average difference of 2–3% compared to the 31P NMR method. These results confirmed that the FT-IR method can be used as a convenient and rapid alternative to the 31P NMR method for quantifying PLs in krill oil.

Quantitative Determination of Krill Oil Composition by ATR-FTIR, NIR, and 31P NMR Spectroscopy

2020 ◽  
Author(s):  
Ashraf Ismail ◽  
Sanaz Molaye Moghaddam ◽  
Jean-Pierre MetabanzoulouSarya Aziz ◽  
Jacqueline Sedman ◽  
Mazen Bahadi
Keyword(s):  
Nmr Spectroscopy ◽  
Quantitative Determination ◽  
31P Nmr ◽  
31P Nmr Spectroscopy ◽  
Krill Oil ◽  
Oil Composition

ChemInform Abstract: A New 31P NMR Method for the Enantiomeric Excess Determination of Alcohols, Amines, and Amino Acid Esters.

ChemInform ◽  
2010 ◽  
Vol 24 (28) ◽  
pp. no-no
Author(s):  
R. HULST ◽  
R. W. J. ZIJLSTRA ◽  
B. L. FERINGA ◽  
N. KOEN DE VRIES ◽  
W. TEN HOEVE ◽  
...  
Keyword(s):  
Amino Acid ◽  
31P Nmr ◽  
Enantiomeric Excess ◽  
Amino Acid Esters ◽  
Nmr Method ◽  
Acid Esters

Study on mechanism of nucleic acid hydrolysis with ribonuclease A using 31P NMR method

1988 ◽  
Vol 6 (2) ◽  
pp. 185-187
Author(s):  
Wang Yu ◽  
Xu Yao-Zhong ◽  
Zhang Wei-Jun ◽  
Yao Sheng-Gen ◽  
Huang Yong-Ren
Keyword(s):  
Nucleic Acid ◽  
Acid Hydrolysis ◽  
31P Nmr ◽  
Ribonuclease A ◽  
Nmr Method

Prospects of in vivo 31P NMR method in glyphosate degradation studies in whole cell system

2009 ◽  
Vol 44 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Jacek Lipok ◽  
Dorota Wieczorek ◽  
Michał Jewgiński ◽  
Paweł Kafarski
Keyword(s):  
31P Nmr ◽  
Cell System ◽  
Whole Cell ◽  
Nmr Method ◽  
Degradation Studies ◽  
Glyphosate Degradation
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