“Green” Synthesis of Gold and Silver Nanoparticles with Propolis Extract and Rosa damascena Waste

Year 2018, Volume: 1 Issue: 3 - 2nd Propolis Conference Special Issue, 71 - 71, 08.12.2018

Anton M. Slavov Daniela Karashanova Biliana Georgıeva İvelina Vasıleva Vassya Bankova Rada Dınkova Nikoleta Yantcheva

Abstract

Propolis
has been used in the traditional medicine for more than 2000 years. It is a
treasured medicine due to its antifungal, antiviral, antitumor,
immunomodulatory and anti-inflammatory properties. Additionally, due to its
antibacterial and antioxidant activity, propolis is a potential candidate for
“green” synthesis of nanoparticles (NPs) or/and composite materials with
potential medical applications¹. Hence, the aim of the present study
was focused on biogenic synthesis of gold and silver nanoparticles with propolis
extract. A commercial Bulgarian poplar propolis extract was used. The
composition of the extract was investigated by GC-MS. The synthesis was
followed by visual observations and UV-Vis studies. The morphology and
characteristics of the NPs were determined by transmission electron microscopy
(TEM). Both, gold and silver nanoparticles were successfully obtained in situ in a simple, one stage process,
with the propolis extract. Compared to plant extract from Rosa damascena waste (able to reduce the Ag⁺ and Au³⁺
in 2-3 minutes), the visual process of synthesis took 120 and 3 minutes, for
silver and gold nanoparticles, respectively. The TEM studies confirmed the
АgNPs and AuNPs synthesis with Bulgarian propolis extract. The GC-MS analysis
revealed that the propolis was rich in flavonoids (pinobaksin, pinocembrin,
chrysin, quercetin, kaempferol and their derivatives). The present study
clearly demonstrated the potential of propolis extract for “green” synthesis of
gold and silver NPs.

Acknowledgements: We acknowledge the financial support from the National Science Fund of
Bulgaria; project DN 17/22 “Valorization and application of essential oil
industry wastes for “green” synthesis of metal nanoparticles”.

Keywords

Propolis, UV-Vis, GC-MS, Nanoparticle

References

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