INTRODUCTION Propolis is a chemically complex resinous substance collected by honeybees (Apis mellifera) from tree buds, comprising plant exudates, secreted substances from bee metabolism, pollen and waxes. Its chemical composition depends strongly on the plant sources available around the beehive, which have a direct impact in the quality and bioactivity of the propolis. Being as Portugal is a...

• Propolis (PROP) presents valuable health properties (e.g. antioxidant). PROP inclusion in foods is limited to its hydrophilicity, strong taste and aroma. Encapsulation may protect compounds mask unpleasant flavor extracts were encapsulated using alternative polymer-carriers loadings. efficiencies yields improved compared previous studies. Propolis, a heterogeneous matrix produced by honeybees...

A recent article by Nakamura R. and colleagues has reported the effects of propolis from different geographical areas on mast cell degranulation [1]. As well as flavonoids, propolis is well known among general population for its anti-allergic properties [2,3]. Actually, propolis has plenty of biological and pharmacological properties and its mechanisms of action have been widely investigated in...

The term ‘propolis’ was used in Ancient Greece meaning: pro (for, in front of, e.g., at the entrance to) and polis (city or community); a substance that is for or in defence of the city or hive. Propolis is a resinous substance collected by honeybees from leaf buds and exudates from various plant sources, which is employed for construction and repair of the honeycomb. More than 180 compounds ha...

Elke Strehl, Regina Volpert, and Erich F. E lstner Institut für Botanik und Mikrobiologie, Biochemisches Labor, Technische Universität München, Arcisstraße 21, D-80290 München Z. Naturforsch. 49c, 39-43 (1994); received August 16/October 15,1993 Propolis, Dihydrofolate Reductase, Antiinflammatory Drugs, Caffeic Acid Ethanolic and aqueous extracts of the natural compound PROPOLIS indicate substa...

This study investigated the potential use of topically and orally administered propolis extracts to prevent UV irradiation-induced oxidative stress in skin. The results illustrated that green propolis extract (GPE) contained greater amounts of polyphenols, coumaric acid, drupanin, baccharin and artepillin C than did brown propolis extract (BPE). GPE showed higher antioxidant activity than BPE w...

Propolis is a complex bioactive mixture produced by bees, known to have different biological activities, especially in countries where there is a rich biodiversity of plant species. The objective of this study was to determine the chemical composition and evaluate the antioxidant and cytotoxic properties of Brazilian propolis from the species Plebeia droryana and Apis mellifera found in Mato Gr...

The aim of the present work is to study the chemical composition of Turkish propolis. Propolis samples were collected from different regions of Turkey (Bursa, Erzurum-Askale, Gumushane-Sogutagil and Trabzon-Caglayan) in 1999. Ethanol extracts of propolis (EEP) were prepared for chemical analysis, using gas chromatograph coupled with mass spectrometry (GC-MS). Our findings show that propolis sam...

Bee propolis is a mixture of plant resins and bee secretions. While bioactivity of honeybee propolis has been reported previously, information is limited on propolis from Australian stingless bees (Tetragonula carbonaria). The aim of this study was to investigate possible vasomodulatory effects of propolis in KCl-precontracted porcine coronary arteries using an ex vivo tissue bath assay. Polar ...

three different concentrations (10, 20 and 30 ppm) of the dry propolis and pollen extracts were applied in double distilled water. biochemical and hematological parameters in blood of rainbow trout (oncorhynchus mykiss) treated to various propolis and pollen concentrations (10, 20 and 30 ppm) for 96 h were determined.  fish treated to 20 and 30 ppm of propolis extract presented significant incr...