Antimicrobial activity of soft and purified propolis extracts
Abstract
Results. Concentration of phenolic compounds in soft propolis extract that possesses antimicrobial activity against gram-positive (Staphylococcus aureus, Enterococcus faecalis) and gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, and Proteus mirabilis) is 0.587±0.054 mg and 0.587±0.054–0.394±0.022 mg (P>0.05) and in purified propolis extract – 0.427±0.044 mg and 0.256±0.02 mg (P>0.05). Klebsiella pneumoniae is most resistant to soft propolis extract when the concentration of phenolic compounds is 1.119± 0.152 mg and to purified propolis extract when the concentration of phenolic compounds is 1.013±0.189 mg (P>0.05). Spore-forming Bacillus subtilis bacteria are more sensitive to soft and purified propolis extracts when the concentration of phenolic compounds is 0.134±0.002 mg and 0.075±0.025 mg, respectively, and Bacillus cereus – when the concentration is 0.394±0.022 mg and 0.256±0.02 mg (P>0.05). Sensitivity of fungus Candida albicans to soft and purified propolis extracts is the same as Bacillus subtilis. Encapsulated bacterium Klebsiella pneumoniae is most resistant to antimicrobial action of soft and purified propolis extracts as compared with gram-positive Staphylococcus aureus and Enterococcus faecalis bacteria (P<0.05), gram-negative Escherichia coli, Pseudomonas aeruginosa, and Proteus mirabilis (P<0.05), sporeforming Bacillus subtilis and Bacillus cereus bacteria (P<0.05), and fungus Candida albicans (P<0.05). There is no statistically significant difference between antimicrobial effect of soft propolis extract and purified propolis extract on gram-positive bacteria, gram-negative bacteria, spore-forming bacteria, encapsulated bacteria, and Candida fungus.
Conclusions. Soft and purified propolis extracts possess antimicrobial activity. They could be recommended as natural preservatives in the manufacture of pharmaceutical products.
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Pavilonis, A.; Baranauskas, A.; Puidokaitė, L.; Maželienė, Ž.; Savickas, A.; Radžiūnas, R. Antimicrobial activity of soft and purified propolis extracts. Medicina 2008, 44, 977. https://doi.org/10.3390/medicina44120122
Pavilonis A, Baranauskas A, Puidokaitė L, Maželienė Ž, Savickas A, Radžiūnas R. Antimicrobial activity of soft and purified propolis extracts. Medicina. 2008; 44(12):977. https://doi.org/10.3390/medicina44120122
Chicago/Turabian StylePavilonis, Alvydas, Algirdas Baranauskas, Ligita Puidokaitė, Žaneta Maželienė, Arūnas Savickas, and Raimondas Radžiūnas. 2008. "Antimicrobial activity of soft and purified propolis extracts" Medicina 44, no. 12: 977. https://doi.org/10.3390/medicina44120122