Roselle seeds, a waste biomass of the roselle calyx processing industry, were utilized to recover valuable compounds of oil, vitamin E, and water-soluble saccharides. Firstly, ultrasound-assisted extraction (UAE) and conventional stirring extraction were conducted for saccharide extraction, and the advantage of UAE was confirmed. Secondly, oil, vitamin E, and saccharides extracted from Vietnamese roselle seeds by UAE were analyzed for the first time. Oil of tri-, di-, and mono-glycerides, fatty acids of linoleic-, oleic-, palmitic-, and stearic-acids, vitamin E of γ- and α-tocopherol, and saccharides of sucrose, raffinose, stachyose, etc. were identified, and the amounts of these components were compared with those in other country’s roselle seeds. Thirdly, cascade extraction of oil, vitamin E, and saccharides by UAE was investigated with solvents of hexane, hexane:ethyl acetate binary solvent, and water. The results indicated that the order of using solvents was very important for high and selective extraction: the best order to recover oil (almost 100%), vitamin E (95.7%), and saccharides (86.2%) was hexane, and then water.

洛神花种子是洛神花花萼加工行业的废弃生物质，可用于回收油、维生素 E 和水溶性糖类等有价值的化合物。首先，对糖类提取进行了超声辅助提取（UAE）和常规搅拌提取，证实了UAE的优势。其次，首次对阿联酋从越南洛神花种子中提取的油、维生素E和糖类进行了分析。三、二、单甘油酯油，亚油酸、油酸、棕榈酸、硬脂酸脂肪酸，γ-和α-生育酚维生素E，蔗糖、棉子糖、水苏糖等糖类.被鉴定出来，并将这些成分的含量与其他国家的洛神花种子中的成分进行了比较。第三，研究了阿联酋使用己烷、己烷：乙酸乙酯二元溶剂和水的级联萃取油、维生素E和糖类。结果表明，溶剂的使用顺序对于高选择性提取非常重要：回收油（几乎 100%）、维生素 E（95.7%）和糖类（86.2%）的最佳顺序是己烷，然后是水。