@article {1319, title = {Evolution and Confirmation of UV Spectrophotometric Approach for Simultaneously Estimating Allicin and Azadirachta indica Extracts in Niosomal Formulation}, journal = {Pharmacognosy Research}, volume = {16}, year = {2024}, month = {October 2024}, pages = {923-928}, type = {Original Article}, chapter = {923}, abstract = {

Background: Generally, it is quite difficult to precisely tell the exact amount of drug in any formulation after formulating it using the active ingredient and other excipients. Aim: Based on the simultaneous equation method in niosome formulation, a straightforward, quick, accurate, error-free and cost-effective spectrophotometric approach for the simultaneous quantification of Allicin and Azadirachta indica has been devised. Materials and Methods: The method involved estimation using two wavelengths. Since the absorbance of Allicin and Azadirachta indica reaches its maximum at 273 and 257 nm, respectively, these wavelengths were used to measure the absorbance and to estimate their relative concentrations. Allicin and Azadirachta indica both follow Beer-Lambert{\textquoteright}s rule at concentrations between 10 and 50 μg/mL. Results: The strategy can be applied for the regular estimation of Allicin and Azadirachta indica niosome formulation using the simultaneous equations as the concentration in the formulation and recovery were quite good (\>95\%) and reliable. It was designed and verified in accordance with ICH criteria. Methanol was used as a solvent for the process. Conclusion: The method proved to be useful, simple and precise for quantifying the extracts.

}, keywords = {Absorbance, Extract, Herbal, Precision, Wavelengths}, doi = {10.5530/pres.16.4.105}, author = {Shilpa Pravin Chaudhari and Abhishek Sunil Nemmaniwar and Sarika Ankushrao Nikam} } @article {1083, title = {Biosynthesis of Silver Nanoparticles from Polyphenolic Extract of Baliospermun solanifolium using Central Composite Design}, journal = {Pharmacognosy Research}, volume = {14}, year = {2022}, month = {October 2022}, pages = {405-411}, type = {Original Article}, chapter = {405}, abstract = {

Background: Plant extracts contain a considerable amount of polyphenols. These polyphenols act as reducing, capping, and stabilizing agents in the formation of silver nanoparticles. Objectives: The objective of the current study is biosynthesis, optimization, and evaluation of silver nanoparticles from the polyphenolic extract of Baliospermum solanifolium. Materials and Methods: Central composite design (CCD) was used to synthesize silver nanoparticles (AgNPs) from the polyphenolic extract of Baliospermum. Preliminary screening was done to find out the upper and lower limits for the optimization study. Four independent variables like Silver nitrate concentrations (mM), Baliospermum extract (\%), stirring time (min), and stirring rate (RPM) were employed. As per the design expert, 30 experiments were performed and their effects on dependent variables were listed. Analysis of synthesized AgNPs was done by visual observation, UV-vis Spectroscopy, Zeta potential, X-ray Diffraction (XRD), FTIR, FESEM, etc. Results: The development of Baliospermum silver nanoparticles was confirmed by a color change from pale yellow to dark brown. Characteristic peak of silver nanoparticles observed at 432 nm. -15 mV Zeta potentials confirmed the stability of silver nanoparticles. The sizes of the produced nanoparticles were measured using a FESEM and ranged from 70 to 140 nm. The crystalline nature of nanoparticles was confirmed with the help of X-ray crystallography. FTIR data strongly revealed the presence of phenolic compounds in the reduction, stabilization, and biosynthesis of AgNPs. Conclusion: Major Optimized factors offered by the Central composite design were 10mM AgNO3, 10 \% Baliospermum extract, 150 min, and 700 rpm. As per the data collected from FTIR and HPLC, silver nanoparticles could be capped with major phenolic groups like ellagic acid, catechins, and quercetin.

}, keywords = {Baliospermum, Central composite design, Design expert, Green synthesis, Silver nanoparticles}, doi = {10.5530/pres.14.4.59}, author = {Sarika Ankushrao Nikam and Shilpa Pravin Chaudhari} }