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    Biogenic Nanoparticle Synthesis Using Marine Alga Schizochytrium sp.
    (Springer, 2020) Mutaf, Tugce; Caliskan, Gulizar; Meydan, Cafer; Oncel, Suphi Surisvan; Elibol, Murat
    Nanotechnology is one of the most promising science and technology discipline that targets to bring new solutions for many applications in biotechnology, biomedical, energy and cosmetic industry by improving particles and devices scale of nanometers. Various sized and shaped nanoparticles can be synthesized by several methods. Up to now, scientists prefer physical and chemical fabrication of nanoparticles. But, these methods contain use of toxic, expensive and non-environmentalist solvents, reducing and stabilising agents. For a sustainable science, there is a necessity development of more eco-friendly, cost-effective and trustable alternative processes. in this context, using biological sources as reaction agent, have a strong potential. Plants, bacteria, fungi are essential biological sources for transformation of metals to nanoparticles. Many researchers focus on fungi and bacteriological potential in nanofabrication whereas algae are highly intriguing biological systems in nanotechnological approach. Some of cyanobacteria and algae have previously been used to synthesize intracellular or extracellular metal nanoparticles. Most of the research concentrate especially on gold and silver nanoparticle production from algae. in this work; bioreduction of silver, zinc and iron metals have been investigated using culture supernatant of marine algae Schizochytrium sp. For characterization of nanoparticles, UV visible spectroscopy, zeta sizer were used. Nanoparticle size was determined by zeta sizer and particles' surface plasmon resonance band detected by UV-Visible Spectroscopy.
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    Green Synthesis of Metal Nanoparticles Using Microalga Galdieria sp.
    (Springer, 2020) Caliskan, Gulizar; Mutaf, Tugce; Oncel, Suphi Surisvan; Elibol, Murat
    Green synthesis of nanoparticles has recently been a preferred method since it offers useful approaches such as non-toxic, biocompatible, environmentally friendly, cost-effective, stable product and trustable alternative processes compared to other methods. Various biological sources such as plant, algae, fungus and bacteria are widely used in biological synthesis of nanoparticles. Algae are more adapted organisms compared to the others for having high growth rate and biomass productivity, high heavy metal accumulation capacity, etc. Nanoparticles can be used in various area such as antimicrobial, antifungal, antioxidant agent, admixture of biosensor and drug transport/release, also diagnosis and treatment systems. Since each organism has different biochemical composition and metabolic pathways, their synthesized nanoparticles are going to show various characteristics and application area. in this study, silver, iron (II) and zinc nanoparticles were produced by using microalga Galdieria sp. the synthesized nanoparticles were characterized by using UV visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) and zeta sizer. Antimicrobial activity against gram negative and gram-positive bacteria was also examined throughout the study. in conclusion, the potential of this biogenic nanoparticle was discussed.