TITLE:
Comparison of Antioxidant Activities of Silver Nanoparticles and Methanol Extracts of Three Indigenous Nigeria Herbal Seeds
AUTHORS:
Prisca Nneka Onuoha, Nuria Chinonyerem Oganezi, Christopher Uche Okoronkwo, Uzoaga Linda Nkiruka, Peter Azikiwe Onwualu
KEYWORDS:
Piper guineense (PG) or Uziza, Monodora myristica (MM) or Ehuru and Capsicum annum (CA) or Cayenne Pepper, Scanning Electron Microscope/Energy Dispersive X-Ray (SEM/EDX), Silver Nanoparticles (AgNPs), Fourier-Transform Infrared (FT-IR), 2, 2-Diphenyl-1-Picryl-Hydrazyl Radical Scavenging (DPPH), Silver Nitrate (AgNO3)
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.13 No.7,
July
27,
2022
ABSTRACT: The
antioxidant of seeds was carried out using extracts from methanol and Silver
Nanoparticles from the spice. The SEM shows the shapes, dispersion and
agglomeration of the sample, while the EDX confirms the SEM and the presence of
some compounds. The FT-IR reveals the AgNPs capping and reducing the particular biomolecule
from the functional group for identification. Compounds found in the FT-IR seeds
of Capsicum annum are Ag L (Silver iodide), C K
(Cyanogen chloride), P K (Phenol). Monodora myristica are Mo L (Molybdenum), Ag L
(Silver iodide), C K (Cyanogen chloride), P K (Phenol), Mg K (Magnesium). Piper guineense are Ag L (Silver iodide), Ci K
(Potassium chloride), C K (Cyanogen chloride), P K (Phenol). The seeds show that the AgNPS of CA and MM has a better antioxidant activity than the methanol of CA and MM,
while the PG methanol has a better activity than the AgNPS PG. The
control (Catechin and Galic acid) has a slight overall better DPPH activity
than the AgNPS. It is important to note that there is a
concentration dependency in CA, MM AgNPS, PG methanol respectively.
Notably, at CA methanol, the conc. at 125 was higher than the conc. at 250.
Hence, there is need to create a great part in using plant
samples for making tabulated or capsulated drugs for treatment of diseases and
using plant silver nanoparticles to develop a healthy food/drug preservative
package material “smart
packaging” that
will enhance shelf-life.