Validation of a HPLC method for determination of glutamine in food additives using post-column derivatization
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Scientific Research
Scientific Research Publishing
Scientific Research Publishing
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An ion-exchange chromatography (IEC) followed by post-column derivatization method was validated for the determination of glutamine in food additive products. The chromatographic method was carried out on a sodium cation-exchange column and using detection at 570 nm. The mobile phase consisted of sodium eluant, pH 3.15, with 5% sulfolane, sodium eluant, pH 7.40 and sodium column regenerant. The method was linear in the range of 4 - 50 µg/mL (r 2 = 0.9999). The accuracy was 99.78%. Moreover, method validation demonstrated acceptable results for precision and robustness. The method was found to be able to use for routine analysis of the glutamine.
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American Journal of Analytical Chemistry, v. 3, n. 2, p. 113-117, 2012.
