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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 ?
About NaturaNectar(TM) NaturaNectar(TM) is the first and leading developer of natural supplements from Brazilian Red Bee Propolis.
This is made possible because of our company's unique combination of the largest scientific library on bee propolis, our commercially-viable access to the exotic Brazilian Red Propolis, and most importantly, our exclusive Green Extraction(TM) technology.
NaturaNectar is the first and leading developer of functional natural supplements and specialty products from premium Brazilian bee propolis including the exotic red propolis.
Throat Guardian's key ingredient, Propolis Water Extract (PWE (TM)-M), is a gentle yet effective water-based, all-natural extract from Brazilian bee propolis that does not contain alcohol, harmful chemicals, or other substances that may harm the body's mucous membrane.
NaturaNectar's exclusive bee propolis products, which include the exotic and rich Red Bee Propolis extract, will begin distribution in Uruguay this fall.
March 8, 2012 /PRNewswire/ -- NaturaNectar LLC announced today they introduced NaturaNectar Throat Guardian[TM] to expand and strengthen the First Line of Functional Bee Propolis Products, utilizing their proprietary water-extraction technology and the only commercial viable source of exotic, Brazilian red bee propolis in the world.
EaseFemin is the first supplement to include the Brazilian Red Bee Propolis, a new source of aglycone isoflavones, being a natural alternative to hormone replacement therapy* and relief for menopausal symptoms*.
The company's exclusive and premium products from Brazilian Red Bee Propolis call for such education and now with Select Nutrition Distributors this can happen faster.
12, 2011 /PRNewswire/ -- NaturaNectar LLC is pleased to announce that its exclusive extracts from Brazilian Bee Propolis will be featured in an upcoming segment of "The Art of Living with Marilu Henner".
6, 2011 /PRNewswire/ -- NaturaNectar LLC, announced today that its sister company PhenolicFactory secured a long-term Partnership with Scandinavian based PRC - Propolis Research Centre A/S to begin extracting Bee Propolis in the USA through a revolutionary yet time proofed technology capable of generating the purest and richest propolis extracts available today through a combination of a well kept extraction formula and a series of well designed patents.
Complementary and Alternative Medicine Now Counts on Brazilian Red Bee Propolis
Brazilian Red Bee Propolis Offers Natural Alternative to Hormone Replacement Therapy