| Autor: |
Jasmeet Kaur Sohal, Ashish Saraf, Meghna Shrivastava, Kamlesh Kumar Shukla |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Plant Science Today. 6:208-217 |
| ISSN: |
2348-1900 |
| DOI: |
10.14719/pst.2019.6.2.532 |
| Popis: |
Biosynthesis of nanoparticles by using plant extracts is presently under development. The study has been focused on the biosynthesis of silver nanoparticles (AgNPs) using aqueous extract of Aloe vera gel as well as to determine their antioxidant potential. UV-Vis spectrophotometeric analysis showed surface plasmonic resonance (SPR) band at 440 nm, which is specific for AgNPs. The Transmission Electron Microscopy (TEM) revealed that the synthesized AgNPs were spherical in shape with an average particle size of 66.6 nm. Fourier Transform Infrared Spectroscopic (FTIR) analysis of the aqueous extract before and after the synthesis of AgNPs revealed the presence of different functional groups related to phenolic and polyphenolic compounds such as tannins and flavonoids, and other metabolites like proteins, which may be responsible for the synthesis and stabilization of AgNPs. The antioxidant potential of the synthesized AGAgNPs was determined by using 2, 2 Diphenyl-1- Picryl Hydrazyl (DPPH) radical scavenging, metal chelating and reducing power assay. Antioxidant assessment showed enhanced dose dependent antioxidant potential of the synthesized AgNPs as compared to the crude extract, which can gain attention of the pharmaceutical industry for preparation of antioxidants of natural origin as the synthetic ones are suspected to be carcinogenic. Present study also supports the advantages of green method for the nanoparticles synthesis. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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