Analysis of formose sugar and formaldehyde by high-performance liquid chromatography.
作者： Md. Zafar Iqbal , Senad Novalin
DOI: 10.1016/J.CHROMA.2009.04.065
关键词: Formose reaction 、 Chemistry 、 Formaldehyde 、 Sugar 、 Reversed-phase chromatography 、 High-performance liquid chromatography 、 Ultraviolet light 、 Derivatization 、 Ion chromatography 、 Chromatography
摘要: Abstract Formose sugar and formaldehyde (HCHO) were analyzed using high-performance liquid chromatography (HPLC) utilizing a CarboPac PA1 column (Dionex) pulsed amperometric detection. This HPLC system was unsuitable for the analysis of formose HCHO thus reducing sugars unconverted determined by endowing them with charges through derivatization method 2,4-dinitrophenylhydrazine. The separation detection compounds performed three Chromolith RP-C18 columns (Merck) diode array detection, at wavelength 360 nm ultraviolet light, respectively. Lower (except HCHO) showed some instabilities when derivatized samples kept extended periods time. For C 5 consecutive higher sugars, certain time necessary. In present case (formose reaction partial conversion), approximately 18 h may be reasonable compromise reaction. A agent to compound mole ratio up 100:1 required complete 4 sugars. However, is problematic example due overlapping peaks or branched-chain
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