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Green Synthesis of Silver Nanoparticles from Various Medicinal Plants

Dhanalakshmi A, Muneeswari Alias Surya S, Kirubanandan Shanmugam

Online Journal of Microbiological Research 1(1); 10.31586/ojmr.2022.399 - August 26, 2022

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Abstract

Chemical solvents are commonly used to prevent microbial growth; dangerous to human health and have limited antibacterial properties. On the other hand, Nanoparticles made of metallic elements (such a... Read more

Figure 1. Green synthesis of AgNps. (A) Plants leaves of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); (B) Leaves Extracts of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); (C) Silver nitrate aqueous solution(control); (D) Synthesis of AgNps with Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4) characteristic the color change after an hour.

Figure 2. Green synthesis of AgNps. (A) Plants leaves of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); (B) Leaves Extracts of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); (C) Silver nitrate aqueous solution(control); (D) Synthesis of AgNps with Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4) characteristic the color change after an hour.

Figure 3. FT-IR spectra of green-synthesized AgNPs of Pomegranate (Punica granatum) showing probable functional groups in synthesized nanoparticles.

Figure 4. FT-IR spectra of green-synthesized AgNPs of Pomegranate (Punica granatum) showing probable functional groups in synthesized nanoparticles.

Figure 5. FT-IR spectra of green-synthesized AgNPs of Vitex showing probable functional groups in synthesized nanoparticles.

Figure 6. FT-IR spectra of green-synthesized AgNPs of Vitex showing probable functional groups in synthesized nanoparticles.

Figure 7. FT-IR spectra of green-synthesized AgNPs of Couroupita guianensis showing probable functional groups in synthesized nanoparticles.

Figure 8. FT-IR spectra of green-synthesized AgNPs of Couroupita guianensis showing probable functional groups in synthesized nanoparticles.

Figure 9. FT-IR spectra of green-synthesized AgNPs of Pomelo showing probable functional groups in synthesized nanoparticles.

Figure 10. FT-IR spectra of green-synthesized AgNPs of Pomelo showing probable functional groups in synthesized nanoparticles.

Figure 11. Growth of Bacillus subtilis forming the zone of inhibition in the presence of Silver Nanoparticles synthesized with leaves extracts of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); A positive control (5), A negative control (6).

Figure 12. Growth of Bacillus subtilis forming the zone of inhibition in the presence of Silver Nanoparticles synthesized with leaves extracts of Punica granatum (1), Vitex negundo (2), Couroupita guianensis (3), Cirtrus maxima (4); A positive control (5), A negative control (6).

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