2017年5月5日 · In this work, the recovery of monosaccharides from lignocellulosic hydrolysates by means of Ion Exclusion Chromatography (IEC) has been studied. The analyzed process relies on new pretreatment and hydrolysis steps, involving the neutralization of the hydrolysate with sodium hydroxide.

2002年5月17日 · A mixture of formic, acetic, propionic, valeric, isovaleric, isobutyric, and isocaproic acids has been separated on a polymethacrylate-based weak acidic cation-exchange resin (TSK gel OA pak-A) based on an ion-exclusion chromatographic mechanism with detection using UV-photodiode array, conductivity and atmospheric pressure chemical ionization m...

2021年7月1日 · Acid hydrolysis releases more neutral monosaccharides, while acid methanolysis releases more acidic monosaccharides and causes less degradation of liberated monosaccharides. Two-step acid hydrolysis is regarded as a proper method for the quantification of acidic polysaccharides.

2024年4月18日 · In this study, we determined the monosaccharide recovery rate and non-sugar by-product formation of inulin-type fructan (ITF) and Fru under varied acid hydrolysis conditions using HPAEC-PAD and UPLC-Triple-TOF/MS, respectively.

The three main separation modes for organic acids are anion exchange, ion exclusion, and reversed-phase. Characteristics of each of these modes are described briefly below. Ion Exchange Mode

A method is described for the simultaneous monitoring of four short chain fatty acids (SCFA) (lactic, acetic, propionic and butyric acid), two mono-saccarides (fructose and glucose) and ethanol in liquid feed for pigs and liquid feed fermented with lactic acid bacteria.

Rezex RHM-Monosaccharide H + (8%) Ion Exclusion HPLC Columns 8% cross-linked hydrogen For use with monosaccharides in combination with organic acids, fatty acids, alcohols, ketones, neutral compounds, or inorganic salts

Rezex™ HPLC ion-exclusion columns achieve reproducible, accurate separations based on multiple modes of interaction. Available in 4 % and 8 % cross-linked sulfonated styrene-divinylbenzene (SDVB) and multiple ionic forms for a wide range of selectivities. USP L17, L19, L22, L34, and L58 packings available.

Rezex™ HPLC ion-exclusion columns achieve reproducible, accurate separations based on multiple modes of interaction. Available in 4 % and 8 % cross-linked sulfonated styrene-divinylbenzene (SDVB) and multiple ionic forms for a wide range of selectivities. USP L17, L19, L22, L34, and L58 packings available.

Ion exclusion columns utilize a soft polystyrene resin which provides the separation. This soft resin is very sensitive to abrupt changes in column backpressures. So, to maximize the lifetime of a Rezex column one should insert the column into …