FIELD: fat-and-oil industry. SUBSTANCE: method involves treating plant material with solvent and effectuating driving-off in closed space at steady-state temperature below solvent boiling temperature in the presence of inert gas. Apparatus has vessel for solvent and micella accumulator. Return refrigerator and evaporator are communicated through gas phase circulation circuit. EFFECT: increased efficiency in extracting plant material and improved quality of extracted material. 3 cl, 1 dwg
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