摘要：The extracts from 17 ready available plants were prepared by 95% ethanol extraction in Soxhlet extractor. The crude extracts were examined for their antioxidation properties using the automatized swift test (Rancimat) and lard as a substrate. The extracts with the most promising results ( Rosmarinus officinalis and Salvia officinalis ) were chromatographed on silica gel column and the fractions so obtained were explored separately. Second fraction from the chromatography of rosemary extract exhibited the antioxidation activity (induction period 8 h at 0.002% wt.) comparable with the activity of butylated hydroxytoluene (BHT) at 12.5 times higher concentration (induction period 11.45 h at 0.025% wt.). The antimicrobial efficiency of these extracts was determined with the aid of three dimensional agar method on four selected microorganisms ( Bacillus subtilis , Escherichia coli , Pseudomonas aeruginosa , Staphylococcus aureus ). The most effective were extracts from agrimony, black tea, rosemary and sage. Extracts possessing good antioxidation activity also exhibited antimicrobial efficiency.
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