HPLC Separation of Amino Acids in Supplements Capsules

Glutamine, valine, isoleucine, and leucine are baseline resolved in a dietary supplement with a mobile phase of acetonitrile, water, and sulfuric acid with ultraviolet (UV) detection at 210 nm on a Primesep 100 column. Increasing the sulfuric acid concentration allows elution of arginine. Primesep 100 separates underivatized amino acids and amines by combining reversed-phase and ion-exchange mechanisms. The HPLC separation uses a mobile phase of water, acetonitrile (MeCN, ACN), and sulfuric acid with ultraviolet (UV) detection at 210 nm.

Condition

Column Primesep 100, 4.6x250 mm, 5 µm, 100A
Mobile Phase MeCN/H2O - 30/70%
Buffer H2SO4
Flow Rate 1.0 ml/min
Detection UV, 210 nm
 

Description

Class of Compounds Drug, Acid, Hydrophilic, Ionizable, Vitamin, Supplements, Amino acid
Analyzing Compounds Arginine, Glutamine,  L-Valine (Val/V),  L-Isoleucine (Ile/I), L-Leucine (Leu/L)
 

Application Analytes:

Arginine
Glutamine
Isoleucine
Leucine
Valine
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