Defatted sesame seed flour is an important source of oil-insoluble
lignan glycosides, such as pinoresinol glucosides and sesaminol
glucosides (Moazzami et al., 2006). Such compounds may be contained
in the polar-soluble crude extract obtained by extraction
with 70% ethanol. This is why polar-soluble crude extracts from
white and gold sesame seeds were purified by butanol extraction
to remove relatively hydrophobic compounds contained in the
crude extract