Alternative preparation of propolis extracts: comparison of their composition and biological activities

BMC Complementary and Alternative Medicine

Research Article

Audrius Maruska¹  Karolina Barcauskaite¹  Virginija Laugaliene¹  Loreta Kubiliene²  Daiva Majiene²  Arunas Savickas²  Giedre Kasparaviciene²  Alvydas Pavilonis³  Raimondas Kubilius⁴ 

[1] Department of Biology, Vytautas Magnus University, Vileikos 8, LT-44404, Kaunas, Lithuania;Department of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, A.Mickeviciaus 9, LT-44307, Kaunas, Lithuania;Department of Microbiology, Lithuanian University of Health Sciences, Eiveniu 4, LT-40009, Kaunas, Lithuania;Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 17, LT-5016, Kaunas, Lithuania;

关键词: Water;    Oil;    Ethanol;    PEG;    Extract of propolis;    Polyphenols;    Radical scavenging activity;    Antimicrobial activity;   

DOI  :  10.1186/s12906-015-0677-5

 received in 2013-09-26, accepted in 2015-05-15,  发布年份 2015

来源: Springer

【 摘 要 】

BackgroundPropolis is the bee product noted for multiple biological effects, and therefore it is widely used for the prevention and treatment of a variety of diseases. The active substances of propolis are easily soluble in ethanol. However ethanolic extracts cannot be used in treatment of certain diseases encountered in ophthalmology, pediatrics, etc. Unfortunately, the main biologically active substances of propolis are scarcely soluble in water, oil and other solvents usually used in pharmaceutical industry. The aim of this study was to investigate chemical composition, radical scavenging and antimicrobial activity of propolis extracts differently made in nonethanolic solvents.MethodsTotal content of phenolic compounds in extracts was determined using Folin-Ciocalteu method. Chemical composition and radical scavenging activity of extracts were determined using HPLC system with free radical reaction detector. Antimicrobial activity of examined preparations was evaluated using the agar-well diffusion assay.ResultsTotal amount of phenolic compounds in extracts made in polyethylene glycol 400 (PEG) and water mixture or in PEG, olive oil and water mixture at 70 °C was comparable to that of ethanolic extract. Predominantly identified compounds were phenolic acids, which contribute ca. 40 % of total radical scavenging activity.Investigated nonethanolic extracts inhibited the growth and reproduction of all tested microrganisms. Antimicrobial activity of some extracts was equal or exceeded the antimicrobial effect of ethanolic extract. Extracts made in pure water or oil only at room temperature, contained more than 5 – 10-fold lower amount of phenolic compounds, and demonstrated no antimicrobial activity.ConclusionsNonethanolic solvent complex and the effect of higher temperature allows more effective extraction of active compounds from propolis. Concentration of total phenolic compounds in these extracts does not differ significantly from the concentration found in ethanolic extract. Propolis nonethanolic extracts have radical scavenging and antimicrobial activity.

【 授权许可】

Unknown   
© kubiliene et al.; licensee BioMed Central. 2015. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.