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<p>A procedure was developed for the synthesis of sodium poly-α-<span>d</span>-galactopyranosyluronate (PGNa) complexes with silver. The proposed approach involves the saponification of citrus pectin with a NaOH solution and the subsequent partial replacement of sodium ions in PGNa with silver(<span>i</span>) ions. Biogenic aldehydes, such as glucose, reduce silver(<span>i</span>) ions during the preparation of metal complexes to form silver nanoparticles (AgNPs) 38–70 nm in size. The size of AgNPs and the efficiency of silver(<span>i</span>) reduction in AgNPs depend on the conditions for the preparation of the complexes and the nature of the silver(<span>i</span>) salt used. The best results (the fraction of AgNPs of the total silver content in the complexes was &gt;88%) were obtained using [Ag(NH<sub>3</sub>)<sub>2</sub>]OH as a silver source. The powder X-ray diffraction analysis showed that an increase in the fraction of silver in the complexes disrupts the ordering of PGNa regions, resulting in the almost complete amorphization of the complexes in the case of the replacement of about 30 mol of sodium with silver(<span>i</span>). The cytotoxic effects of the complexes were evaluated in comparison to silver nitrate.</p>

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Synthesis, structure characterization, and cytotoxic properties of sodium poly-α-d-galactopyranosyluronate complexes with silver

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. V. Nemtarev,
  • T. I. Abdullin,
  • E. V. Kuznetsova,
  • S. T. Minzanova,
  • A. F. Saifina,
  • A. T. Gubaidullin,
  • A. D. Voloshina,
  • A. P. Lyubina,
  • L. I. Murtazina,
  • K. V. Kholin,
  • A. R. Khamatgalimov,
  • I. S. Ryzhkina,
  • V. F. Mironov

摘要

A procedure was developed for the synthesis of sodium poly-α-d-galactopyranosyluronate (PGNa) complexes with silver. The proposed approach involves the saponification of citrus pectin with a NaOH solution and the subsequent partial replacement of sodium ions in PGNa with silver(i) ions. Biogenic aldehydes, such as glucose, reduce silver(i) ions during the preparation of metal complexes to form silver nanoparticles (AgNPs) 38–70 nm in size. The size of AgNPs and the efficiency of silver(i) reduction in AgNPs depend on the conditions for the preparation of the complexes and the nature of the silver(i) salt used. The best results (the fraction of AgNPs of the total silver content in the complexes was >88%) were obtained using [Ag(NH3)2]OH as a silver source. The powder X-ray diffraction analysis showed that an increase in the fraction of silver in the complexes disrupts the ordering of PGNa regions, resulting in the almost complete amorphization of the complexes in the case of the replacement of about 30 mol of sodium with silver(i). The cytotoxic effects of the complexes were evaluated in comparison to silver nitrate.