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Serdar, Maja; Knežević, Zorka
Arhiv za higijenu rada i toksikologiju, 06/2011, Volume: 62, Issue: 2Journal Article
This paper presents two high performance liquid chromatographic (HPLC) methods used for the separation and determination of artificial sweeteners aspartame, acesulphame K, sodium saccharin, and sodium cyclamate in beverages and special nutritional products (special food intended for specific population groups). All four compounds are soluble in aqueous solutions and can easily be separated and determined by HPLC with a diode array detector (DAD). The first method involved separation of aspartame, acesulphame K, and sodium saccharin on a C18 column with an isocratic elution of phosphate buffer and acetonitrile as mobile phase. The second method was used to separate sodium cyclamate on a C18 column with methanol and water as mobile phase. Under optimum conditions, both methods showed good analytical performance, such as linearity, precision, and recovery. The methods were successfully applied for the analysis of real samples of soft drinks and special nutritional products. Ovaj rad predstavlja dvije metode za separaciju i određivanje umjetnih sladila aspartama, acesulfama K, natrijeva saharina i natrijeva ciklamata u osvježavajućim bezalkoholnim pićima i posebnim prehrambenim proizvodima tehnikom tekućinske kromatografije visoke djelotvornosti (HPLC). Sva četiri analita topljiva su u vodenim otopinama i lako se mogu razdvojiti i odrediti tekućinskom kromatografijom uz primjenu detektora s nizom dioda (DAD). Prva je metoda kromatografsko razdvajanje aspartama, acesulfama K i natrij saharina na C18 koloni izokratnim ispiranjem fosfatnog pufera i acetonitrila kao mobilne faze. Druga metoda omogućava određivanje natrijeva ciklamata na C18 koloni sa metanolom i vodom kao mobilnom fazom. Pod najpovoljnijim eksperimentalnim uvjetima obadvije metode pokazale su dobre analitičke karakteristike, kao što su linearnost, preciznost i analitički povrat. Navedene su metode primijenjene za analize realnih uzoraka osvježavajućih bezalkoholnih pića i hrane za posebne prehrambene potrebe.
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