Abstract
Abstract The aim of this investigation was to synthesize propolis-mediated silver nanoparticles (Pro-AgNPs) and to test their biological activities in comparison with the raw materials (Saudi propolis). The chemical–physical characterization of the product showed that Pro-AgNPs were well synthesized. For the study of biological properties, aqueous and methanolic extracts were prepared from both propolis and Pro-AgNPs. Total polyphenol contents (TPCs) and antiradical activities showed their highest values in methanolic extracts, in particular in propolis extract. But, a higher TPC was found in Pro-AgNP aqueous extract as compared to propolis aqueous extract. It seems that Pro-AgNP synthesis helped extract more phenolic compounds with water. These compounds did not enhance antiradical activity in Pro-AgNP aqueous extract but increased its antibacterial activity.
Highlights
Propolisor “bee glue” is a one of the most important bee products; it is a sticky material used in hive building and its defense [1,2]
The Total polyphenol contents (TPCs) of the aqueous and methanolic extracts were determined following the method described by Bettaieb et al [10] after evaporation under vacuum (BÜCHI Rotary Evaporators R210, Germany) at 40°C
Our results are in agreement with those of Kothai and Jayanthi [12] who found a similar peak around 413 characteristics of AgNPs
Summary
Propolisor “bee glue” is a one of the most important bee products; it is a sticky material used in hive building and its defense [1,2] It is collected by bees from a variety of resinous secretions from different plant species, mixed with their salivary and enzymatic secretions [3]. Several researches were performed with the aim to study its chemical properties and biological activities [5]. In this context, Anjum et al [3] reported for propolis anti-fungal, anti-tumoral, anti-protozoal, anti-inflammatory, hepatoprotective, dental protective, antioxidant, anti-viral, wound healing, and anti-cancer activities. 2.3 Total polyphenol content (TPC) and antiradical assay of propolis and Pro-AgNPs
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