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Influence of G4 Poly(Amidoamine)-Gold Nanocomposites on Arthrospira platensis

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Abstract:

The influence of G4 poly(amidoamine) dendrimers or PAMAM–gold nanocomposites (G4NH2–Au, G4NH2 PAMAM dendrimer ethilenediamine core, generation 4). (NH2)64 on Arthrospira platensis was studied under various conditions. Our findings demonstrate that these gold nanocomposites interact with both chlorophyll a and proteins in the cyanobacterium. Notably, the interaction between chlorophyll a and PAMAM G4NH2–Au nanocomposites persisted despite exposure to various factors, including temperature changes and high doses of irradiation. PAMAM–Au nanocomposites were found to enhance the natural functionality of the photosynthetic microorganism Arthrospira platensis and remained effective under diverse conditions. This enhancement is likely due to the increased light absorption potential resulting from the incorporation of nanocomposites into the microorganism’s cellular constituents.

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Periodical:

Key Engineering Materials (Volume 1028)

Pages:

97-104

DOI:

https://doi.org/10.4028/p-v8dgOz

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Online since:

October 2025

Authors:

Eter Gelagutashvili*, Irine Khutsishvili, Tamar Giorgadze, Vasil Bregadze

Keywords:

Arthrospira platensis, Gold Nanocomposites, PAMAM Dendrimers G4NH2

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