isolation procedure article 20 nonhuman 14 controlled study 10 priority journal 10 structure analysis 10 unclassified drug 10 chemical reaction 8 chemical structure 8 Argentina 6 carbon nuclear magnetic resonance 6 fractionation 6 mass spectrometry 6 nuclear magnetic resonance 6 polysaccharide 6 stereochemistry 6 synthesis 6 2 propanol 4 Fungi 4 Gleditsia 4 Molecular Structure 4 Nuclear Magnetic Resonance, Biomolecular 4 Solvents 4 alcohol 4 carbohydrate synthesis 4 carbon 13 4 conference paper 4 endosperm 4 extraction 4 galactomannan 4