У статті наведено результати дослідження зміни якісного складу рослинних олій сої та ріпаку із зміною ступеня подрібнення сировини, отриманих екстракційним вилученням у стаціонарному шарі в апараті Сокслета з використанням хлористого метилену як розчинника. Проведено ряд дослідів на визначення оптичних властивостей олії методом інфрачервоної спектроскопії. Представлено інфрачервоні спектри поглинання для різних зразків олій. Результати порівняноіз попередніми рефрактометричними дослідженнями та дослідженнями за допомогою ультрафіолетової спектроскопії.
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