| dc.contributor.author | Manullang, JR | |
| dc.contributor.author | Nugroho, RA | |
| dc.contributor.author | Rohmah, M | |
| dc.contributor.author | Rudianto | |
| dc.contributor.author | Qorysuchi, A | |
| dc.date.accessioned | 2022-01-13T03:53:49Z | |
| dc.date.available | 2022-01-13T03:53:49Z | |
| dc.date.issued | 2021-11-30 | |
| dc.identifier.citation | Samarinda | en_US |
| dc.identifier.issn | 2087-3948 | |
| dc.identifier.uri | http://repository.unmul.ac.id/handle/123456789/8816 | |
| dc.description | Plants are well-known to contain a considerable number of phenolic and flavonoid compounds, which may have superior anti-oxidative properties and are regarded as potent free radical scavengers (Mustafa et al. 2010). The present IC50 value showed that the Ea-AgNPs have significant antioxidant action. Large molecular weight values and the closeness of multiple aromatic rings and hydroxyl groups are crucial for bioactive compounds' free radical scavenging action (Hagerman et al. 1998). Further, Panneerselvam et al. (2011) demonstrated the in vitro antioxidant capacity of synthesized silver nanoparticles mediated by Andrographis paniculata (Acanthaceae) using a DPPH radical scavenging test, which corroborates the findings of our study. In conclusion, this study demonstrates the successful synthesis of Ea-AgNPs using ethanolic extract of E. americana bulb. An optimum UV/VIS spectrum absorption peak at 400 nm was found, corresponding to the resulting Ea-AgNPs. The FTIR analysis revealed several important biocompounds and XRD characterization found an amorphous Ea-AgNP peak at 24 Theta. Meanwhile, the particle size distribution curve of Ea-AgNPs showed a size of 105 nm, with an optical absorption characteristic peak at 3 keV observed via SEM/EDX analysis. The EDX examination revealed three signals: a strong signal from C atoms (70.99 %) and signals from O atoms (28.95 %) and Ag atoms (0.06 %). The TEM imaging also showed the characteristics of Ea-AgNPs. Phytochemical screening tests identified the presence of some phytocompounds such as flavonoids, tannins, alkaloids, and saponins in the Ea-AgNPs and showedIC50 values of 45.30 ppm. | en_US |
| dc.description.abstract | Manullang JR, Nugroho RA, Rohmah M, Rudianto, Qorysuchi A. 2021. Plant-extract-mediated biosynthesis of silver nanoparticles using Eleutherine americana bulb extract and its characterization. Nusantara Bioscience 13: 247-254. The plant-based biosynthesis of nanoparticles has gained increasing momentum due to being lower in cost and eco-friendly. This study aimed to biosynthesize nanoparticles from the bulb ethanolic extract of Eleutherine americana (Aubl.) Merr. ex K.Heyne (Ea-AgNPs), then characterize Ea-AgNPs and determine their phytochemical content and antioxidant capacity. The Ea-AgNPs were synthesized using ethanolic extract of E. americana bulb along with various concentrations of AgNO3 (0.5-4 mM). The Ea-AgNPs were then characterized using UV-VIS spectroscopic, Scanning Electron Microscopy/ Energy Dispersive X-ray (SEM/EDX), Transmission Electron Microscopy (TEM), X-ray Powder Diffractometry (XRD), and Fourier-Transform Infrared Spectroscopy (FTIR) techniques. The results indicated that E. americana can be used to reduce AgNO3 to synthesize Ea-AgNPs, indicated by color change, and had optimum UV/VIS spectra at 400 nm. The FTIR analysis found that Ea-AgNPs showed peaks at 2919, 2850, 1586, and 1031 cm1, containing several important biocompounds. Additionally, the XRD results found an amorphous Ea-AgNP peak with maximum intensity and proportion of silver occurring at 24 Theta. The particle size distribution curve of Ea-AgNPs showed a size of 105 nm. Furthermore, SEM/EDX analysis revealed an optical absorption characteristic peak at 3 keV. The EDX examination revealed three signals: a strong signal from the C atom (70.99 %), an O atom (28.95 %), and Ag atom (0.06 %). The TEM imaging also showed the characteristics of Ea-AgNPs. Some phytochemicals such as flavonoids, tannins, alkaloids, and saponins were found in Ea-AgNPs, with IC50 values of 45.30 ppm. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | NUSANTARA BIOSCIENCE | en_US |
| dc.relation.ispartofseries | Vol 13,No.02;pp.247-254 | |
| dc.subject | Antioxidant properties, characterization, Eleutherine americana, nanoparticle | en_US |
| dc.title | Plant-extract-mediated biosynthesis of silver nanoparticles using Eleutherine americana bulb extract and its characterization | en_US |
| dc.type | Article | en_US |
