Processing of rice husk autohydrolysis liquors for obtaining food ingredients

摘要: Rice husks are of a lignocellulosic nature, with hemicellulose fraction made up substituted arabinoxylan. were treated hot, compressed water (autohydrolysis reaction) under optimized conditions to cause the hydrolytic degradation The reaction products contained volatile components and nonvolatile (NVC), which hemicellulose-derived (substituted oligosaccharides monosaccharides) other solutes (ONVS). To decrease content ONVS, concentrated autohydrolysis liquors first subjected ethyl acetate extraction then various alternative treatments (solvent precipitation, freeze-drying solvent extraction, or ion exchange). resulting assayed for composition yield determination. Material balances presented several processes considered. best results in terms purification obtained sequential stages exchange, led concentrates compounds (sugars sugar oligomers) accounting 92 wt % NVCs.