Received 04 Nov., 2012 Accepted 03 May, 2013 (005923) 1 Centro de Biotecnologia Vegetal, Faculdade de Ciências e Tecnologia, Universidade do Algarve – UAlg, Faro, Portugal, e-mail: [email protected] 2 Faculdade de Ciências e Tecnologia, Universidade do Algarve – UAlg, Faro, Portugal *Corresponding author Phenols, flavonoids and antioxidant activity of aqueous and methanolic extracts of propolis ...

The cytotoxic activities of extracts of four samples of propolis from the state of Minas Gerais (Southeast Brazil) and two from the state of Paraná (South Brazil) were evaluated using sea urchin (Lytechinus variegatus) eggs. Cytotoxic activity was observed, characterized mainly by the inhibition of the first cleavage of newly fertilized eggs. Methanol extracts at 32 µg mL(-1) of all samples wer...

Introduction Propolis is a beneficial bioactive food with rich polyphenols content. Nowadays, an increasing interest attracted to the extraction of from raw propolis. This study utilized novel ultrasound-assisted approach for polyphenol Chinese propolis, aiming improve its yield and reveal relevant mechanisms via kinetic as well compositional structural analysis. Methods The optimum conditions ...

We examined the antibacterial activities of several types of propolis, including Africanized honey bee green propolis and propolis produced by meliponini bees. The antibacterial activity of green propolis against Micrococcus luteus and Staphylococcus aureus was superior to that of Melipona quadrifasciata and Scaptotrigona sp propolis. Only two samples of propolis (green propolis and Scaptotrigo...

Propolis is a resinous product collected by honeybees with complex chemical composition. Sodium carboxymethylcellulose polymer commonly used in wound care. The goal of the present work was to produce and characterize NaCMC membranes loaded extract Brazilian brown propolis (CMC-P). Flavonoids phenolic acids were identified extracts, where main substance kaempferide. extracted active against S. a...

We have previously shown that six propolins, A-F, could be isolated from Taiwanese propolis (TP) and that they exerted a broad spectrum of biological activities. Recently, we isolated a seventh compound, propolin G. Its chemical structure has been identified by NMR and fast atom bombardment-mass spectrometry spectra and was found to be identical to a known compound, nymphaeol C. We used high-pe...

Edible seed squash (Cucurbita pepo L, ESS), which is grown for its seeds to consume as a snack, has very important place in vegetable production Türkiye. Viruses are one of the most problems cultivation ESS country. One these diseases Watermelon mosaic virus (WMV, Potyvirus, Potyviridae). Also, it’s common and devastating on other cucurbits worldwide. Propolis, composed mainly by plant resins e...

Diabetes mellitus and its associated complications (cardiovascular, renal, hepatic, ophthalmic, neurological, and osteopathic-, endothelial-, and sexual-dysfunction, etc.) remain a burden worldwide in spite of the availability of a number of anti-diabetic drugs, many of which have adverse effects. There is a trend towards using natural products to control hyperglycemia and associated pathologie...