Green Synthesis of Metallic Nanoparticles, Phytochemical Compounds and Antioxidant Activity Using Two Types of Algae Plants

  • Ioana Raluca SUICA-BUNGHEZ The National Institute for Research & Development in Chemistry and Petrochemistry, Romania
  • Ileana Cristina COVALIU Politehnica University of Bucharest, Romania
  • Ana Alexandra SORESCU The National Institute for Research & Development in Chemistry and Petrochemistry, Romania; University Valahia of Targoviste, Romania
  • Rodica Mariana ION The National Institute for Research & Development in Chemistry and Petrochemistry, Romania; University Valahia of Targoviste, Romania
Keywords: marine algae, phytochemical properties, metallic nanoparticles, green chemistry


Scientific studies have demonstrated that the vegetable material extracts act as potential precursors for the synthesis of nanomaterial using eco-friendly ways. Because the plant extracts contain various secondary metabolites, they act as reducing and stabilizing agents for the bioreduction reaction for synthesis of novel metallic nanoparticles.
Herein, we describe the characteristics of different algae types, from different locations (Belgium and South Correa). Algae have important components, like chlorophyll and other plant pigments, omega-3 fatty acids and essential elements. Also, it has been demonstrated that algae provide a rich source of natural bioactive compounds with antibacterial and antioxidant properties. Another important aspect is the fact that algae represent a good wastewater treatment. In addition to the economic aspect, algae biomass is a source of biodiesel and offers an efficient way for nutrient consumption and provides aerobic bacteria with oxygen through photosynthesis. It is a low-cost technique for the removal of phosphorus, nitrogen and pathogens. We first characterized and compared quantitatively (polyphenols, flavonoids) and qualitatively (carbohydrates, alkaloids) the properties of two algae types extracts (green algae - Enteromorpha spp. and brown ones - Hizikia fusiforme). We then obtained and characterized the gold nanoparticles, formed using HAuCl4 (10-3 M) and algae sample extracts. The algae extracts, the green method for obtaining metallic nanoparticles (AuNP) and the nanoparticles investigated by UV-Vis spectroscopy, optical microscopy and SEM technique are shown in this research.

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How to Cite
SUICA-BUNGHEZ IR, COVALIU IC, SORESCU AA, ION RM. Green Synthesis of Metallic Nanoparticles, Phytochemical Compounds and Antioxidant Activity Using Two Types of Algae Plants. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Mar.2021 [cited 24Jul.2021];44(1):40-5. Available from: