Evidence map›Paper›PMID 26012348›Full record

ArticleBMC complementary and alternative medicine2015

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

Loreta Kubiliene, Virginija Laugaliene, Alvydas Pavilonis, Audrius Maruska, Daiva Majiene, Karolina Barcauskaite, Raimondas Kubilius, Giedre Kasparaviciene, Arunas Savickas

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC complementary and alternative medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
11.0field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 209 citations in OpenAlex.

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10 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Loreta KubilieneDepartment of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, A.Mickeviciaus 9, LT-44307, Kaunas, Lithuania. redakcija@efarmacija.lt.
Virginija LaugalieneDepartment of Biology, Vytautas Magnus University, Vileikos 8, LT-44404, Kaunas, Lithuania. virginija.gailiunaite@gmail.com.
Alvydas PavilonisDepartment of Microbiology, Lithuanian University of Health Sciences, Eiveniu 4, LT-40009, Kaunas, Lithuania. alvydas.pavilonis@lsmuni.lt.
Audrius MaruskaDepartment of Biology, Vytautas Magnus University, Vileikos 8, LT-44404, Kaunas, Lithuania. a.maruska@gmf.vdu.lt.
Daiva MajieneDepartment of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, A.Mickeviciaus 9, LT-44307, Kaunas, Lithuania. daiva.majiene@lsmuni.lt.
Karolina BarcauskaiteDepartment of Biology, Vytautas Magnus University, Vileikos 8, LT-44404, Kaunas, Lithuania. Karolina.Barcauskaite@fc.vdu.lt.
Raimondas KubiliusInstitute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 17, LT-5016, Kaunas, Lithuania. raimondas.kubilius@lsmuni.lt.
Giedre KasparavicieneDepartment of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, A.Mickeviciaus 9, LT-44307, Kaunas, Lithuania. giedre@kasparavicius.eu.
Arunas SavickasDepartment of Drug Technology and Social Pharmacy, Lithuanian University of Health Sciences, A.Mickeviciaus 9, LT-44307, Kaunas, Lithuania. Arunas.Savickas@lsmuni.lt.
Lithuanian University of Health Sciences · LTVytautas Magnus University · LT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

Anti-Infective AgentsAntioxidantsPhenolsPropolisAnimalsBeesChemistry, PharmaceuticalChromatography, High Pressure LiquidEthanolHydroxybenzoatesOlive OilPlant OilsSolubilitySolventsTemperatureWaterAnti-Infective AgentsAntioxidantsEthanolHydroxybenzoatesOlive Oilphenolic acidPhenolsPlant OilsPropolisSolventsWater

Identifiers

PMID26012348
PMCPMC4443635
OpenAlexW1899039537

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.