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Non-nitrogenous ninhydrin-positive compounds in ion-exchange chromatography identification of levulinic in hydrolyzed plant fractions

Food ChemistryNon-nitrogenous Ninhydrin-positive CompoundsBiochemistryHydrolyzed Plant FractionsIon-exchange Chromatography IdentificationMedicineGas ChromatographyAnalytical ChemistryPhytochemistryPharmacologyChromatographic AnalysisChromatography