Analytical method development and validation for monosaccharide profiling in Lignosus rhinocerotis using rP-HPLC

Lignosus rhinocerotis is rich in polysaccharide with diverse -bioactivities. This study developed a pre-column derivatization reversed-phase high-performance liquid chromatography (RP-HPLC) method for analyzing monosaccharides in Lignosus rhinocerotis polysaccharides (LRP). LRP underwent hydrolysis, derivatization, and separation on a Cosmosil 5C18-MS-II column at 254 nm. Baseline separation of eight standard monosaccharides was achieved within 45 min. Calibration curves, precision, and accuracy were validated. Quantitative analysis revealed LRP as a heteropolysaccharide containing mannose, ribose, rhamnose, glucose, galactose, xylose, and arabinose, with 100.28-111.02% recovery. This optimized RP-HPLC offers a simple, reproducible, and accurate tool for LRP monosaccharides analysis, facilitating in understanding its structure-function relationship.