Rapid analysis of N-phenylpropenoyl-L-amino acids (NPA) from cocoa by UPLC and CE

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
M Lechtenberg ◽  
K Henschel ◽  
U Liefländer-Wulf ◽  
B Quandt ◽  
A Hensel
Keyword(s):  
Amino Acids ◽  
Rapid Analysis

scholarly journals Rapid analysis of amino acids by HPLC using pre-column derivatization with PITC.

1987 ◽  
Vol 61 (1) ◽  
pp. 53-55 ◽  
Author(s):  
Kazutami KUWANO ◽  
Chinami SAKAMAKI ◽  
Toshio MITAMURA
Keyword(s):  
Amino Acids ◽  
Rapid Analysis

A simple two-column system for the rapid analysis of plasma amino acids

1965 ◽  
Vol 10 (1) ◽  
pp. 159-162 ◽  
Author(s):  
Roland A. Coulson ◽  
Thomas Hernandez ◽  
Virgil Byers
Keyword(s):  
Amino Acids ◽  
Rapid Analysis ◽  
Plasma Amino Acids ◽  
Column System

Rapid analysis of amino acids using pre-column derivatization

1984 ◽  
Vol 336 (1) ◽  
pp. 93-104 ◽  
Author(s):  
Brian A. Bidlingmeyer ◽  
Steven A. Cohen ◽  
Thomas L. Tarvin
Keyword(s):  
Amino Acids ◽  
Rapid Analysis

Rapid Analysis of Nutritionally Important Free Amino Acids in Serum and Organs (Liver, Brain, and Heart) by Liquid Chromatography of Precolumn Phenylisothiocyanate Derivatives

1990 ◽  
Vol 73 (3) ◽  
pp. 470-475 ◽  
Author(s):  
Ghulam Sarwar ◽  
Herbert G Botting
Keyword(s):  
Amino Acids ◽  
Liquid Chromatography ◽  
Amino Acid ◽  
Ion Exchange ◽  
Free Amino Acids ◽  
Amino Acid Analysis ◽  
Free Amino ◽  
Rapid Analysis ◽  
Protein Hydrolysates ◽  
Modified Method

Abstract An amino acid analysis method for protein hydrolysates, using precolumn phenylisothiocyanate (PITC) derivatlzatlon and liquid chromatography, was modified for its application In rapid analysis of commonly occurring free amino acids in serum and other physiological samples. The modifications Included changes In column temperature (47.5°C compared to 25-35°C used In analyzing protein hydrolysates), method of preparing standard and test samples, and gradient conditions. By using a Waters Pico-Tag amino acid analysis 15 cm long column (which Is also used for analyzing protein hydrolysates), separation of 27 PTC-amino acids in human serum and rat liver, brain, or heart was completed in 20 mln by the modified method. The total time for analysis and equilibration was 30 mln. The modified method was much faster than the traditional ion-exchange methods (2-3 h) or the existing liquid chromatographic methods using PITC derivatlzatlon (66-80 mln) for determining nutritionally Important free amino acids In physiological fluids and tissues. Variability of the method (expressed as coefficients of variation) for the determination (Including deprotelnizatlon, derivatlzatlon, and liquid chromatography) of all amino acids was less than 5%, which compared favorably with the reproducibility of Ion-exchange methods

Rapid analysis of isotopically unmodified amino acids by high-resolution 14N-edited 1H–13C correlation NMR spectroscopy

2008 ◽  
pp. 6525 ◽  
Author(s):  
Jean-Paul Amoureux ◽  
Qiang Wang ◽  
Bingwen Hu ◽  
Olivier Lafon ◽  
Julien Trébosc ◽  
...  
Keyword(s):  
Amino Acids ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Rapid Analysis
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