Estimation of lysine and sulfur amino acids by short ion exchange column method

1970 ◽  
Vol 18 (6) ◽  
pp. 1178-1178
Author(s):  
Owen A. M. Lewis ◽  
Brigid M. G. Shanley
Keyword(s):  
Amino Acids ◽  
Ion Exchange ◽  
Sulfur Amino Acids ◽  
Exchange Column ◽  
Column Method ◽  
Ion Exchange Column

Quantitative Method for Estimating Fecal Amino Acids

1975 ◽  
Vol 21 (10) ◽  
pp. 1437-1440 ◽  
Author(s):  
Christopher W I Owens ◽  
Walfredo Padovan
Keyword(s):  
Amino Acids ◽  
Ion Exchange ◽  
Column Chromatography ◽  
Quantitative Method ◽  
Normal Values ◽  
Amino Nitrogen ◽  
Exchange Column ◽  
Ion Exchange Column ◽  
Fresh Stool

Abstract We describe a method for quantitatively estimating 24 ninhydrin-reacting substances, including the commoner amino acids, in fecal dialysate prepared from ingested dialysis bags retrieved from fresh stool. It is accurate to 2 µmol of α-amino nitrogen per liter of fecal dialysate, and for most substances recovery of added standards is 100%. It involves dilution, ultrafiltration, and automated ion-exchange column chromatography of the dialysate. Some normal values are provided.

A Single Column Method for the Determination of Urinary δ-Aminolevulinic Acid

1969 ◽  
Vol 15 (3) ◽  
pp. 183-189 ◽  
Author(s):  
Mu-Wan Sun ◽  
Edward Stein ◽  
Frances W Gruen
Keyword(s):  
Ion Exchange ◽  
Lead Poisoning ◽  
Aminolevulinic Acid ◽  
Simple Method ◽  
Exchange Column ◽  
Column Method ◽  
Single Column ◽  
Ion Exchange Column

Abstract A simple method for determination of urinary δ-aminolevulinic acid is described. Its advantage over procedures now in use is in the utilization of a single ion-exchange column instead of two ion-exchange columns, with resulting saving of time, labor, and material. The method is accurate and useful in screening for lead poisoning.

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