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(also bee glue), a sticky resinous substance produced by honeybees.

The bees apply propolis to the walls of the hive and seal cracks with it. Propolis has a bitter taste and a syrupy consistency, and it is yellow or brown in color. When stored, it thickens and hardens into a brittle (rosinous) dark-brown mass. Propolis melts at 80°–104°C and crumbles at 15°C. It dissolves in hot methyl alcohol, petroleum ether, liquid ammonia, acetic acid, and a 70-percent solution of ethyl alcohol. Its chemical composition is 50–55 percent plant resins, 8–10 percent essential oils, and about 30 percent wax. About 100–150 g of propolis is collected from each hive in a season. It is stored in the form of balls of 150–200 g in parchment paper. Propolis has an antimicrobial effect and is used in medicine and veterinary practice. Ointments are made from it to treat wounds, eczema and certain other conditions. Propolis is an ingredient in corn plasters.


Mladenov, S. Med i medolechenie [2nd ed.]. Sofia, 1971. (Translated from Bulgarian.)
References in periodicals archive ?
Formononetin and Biochanin A were identified in propolis extract chromatogram through the comparison of peak apex spectrum against the results of reference standards solutions recorded previously in the software library.
That could be the reason for its better performance than pure honey and propolis in terms of mean colonization period.
For the interdigital reaction to phytohemagglutinin, the Shapiro-Wilk test was also performed with variables in normal distribution subjected to analysis of variance and multiple linear regression, which considered the timing and doses of inclusion of propolis residue.
The 100 per cent natural and organic A-P-V propolis drink, which is added to water and consumed, boosts the immune system.
Propolis industry import/export consumption, supply and demand figures and cost price and production value gross margins are also provided.
Passiflora caerulea, Populus tremula), honey and propolis.
Coura and Castro (2002) reported that several herbal products, such as alkaloids, taxoids, estilbenoids, hormones, propolis, naphthoquinones and crude extracts from plants, have activity against T.
This quality approval supports an ongoing export drive for Bee Health's contract manufacturing operation and further underpins the quality status of its Bee Health Propolis and FSC supplement ranges.
Caffeic acid phenethyl ester, or CAPE, is a compound isolated from honeybee hive propolis, the resin used by bees to patch up holes in hives.
The selection includes manuka honey and olive leaf extract hot drinks, Propolis Lozenges to soothe the throat, three Manuka Honey Energy Bars and UMF 10+ Manuka Honey.