FIELD: chemistry.
SUBSTANCE: invention relates to household chemistry, medicine, cosmetic-fragrance industry. Material is extracted using aqueous propyleneglycol extracting agent in a rotor-pulse apparatus without presoaking in continuous circulation mode with ratio of plant material to extraction agent ranging from 1:10 to 1:20 and rotor speed of 3600 to 4400 rpm for 5 to 15 minutes at 25 to 55°C with subsequent filtering off the solid plant part. 1,2-propyleneglycol with water content ranging from 0.1 to 95 wt % is used.
EFFECT: invention allows for cutting on extraction time and obtaining extract with high content of flavonoids (by 20 to 40%) and high resistance to microbiological pollution.
2 cl, 3 tbl, 20 ex
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