scholarly journals Anti-Urolithiatic Activity of Silver Nanoparticles of Terminalia Chebula Bark

2021 ◽  
Vol 37 (1) ◽  
pp. 109-115
Author(s):  
S. Vidhya ◽  
A. Leema Rose ◽  
F. Janeeta Priya ◽  
T. Keerthana ◽  
R. Priyadharshini
Keyword(s):  
Silver Nanoparticles ◽  
Xrd Analysis ◽  
Spectroscopic Studies ◽  
Modern Medicine ◽  
Diffusion Method ◽  
Terminalia Chebula ◽  
Ft Ir ◽  
Crystalline Nature ◽  
Ir Spectroscopic ◽  
Gel Diffusion

The potential inhibitory action of herbals plays an indispensable role in modern medicine. The struvite crystal is an infectious stone related to urinary tract infection, hence the present study highlighted the anti-urolithiatic potential of Terminalia chebula bark mediated silver nanoparticles. Silver nanoparticles formation was confirmed by SPR band at 437nm. FT-IR spectroscopic studies suggested that phytoconstituents are primarily responsible for the reduction and capping of silver nanoparticles. TEM and XRD analysis revealed that the uniformity in shape and crystalline nature of T. chebula mediated silver nanoparticles. The single gel diffusion method was adopted to found the inhibition action of T.chebula mediated silver nanoparticles in struvite crystals. The inhibition efficiency was found to be 87.9 %, indicated that T. chebula mediated silver nanoparticles was a good inhibitor for the struvite crystals. The shift in band values of FTIR spectra confirms that the phyto constituents present in T. chebula bark is responsible for the anti-urolithiatic activity.

scholarly journals Microwave Assisted Biosynthesis of Silver Nanoparticles Using the Rhizome Extract of Alpinia galanga and Evaluation of Their Catalytic and Antimicrobial Activities

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Siby Joseph ◽  
Beena Mathew
Keyword(s):  
Silver Nanoparticles ◽  
Average Diameter ◽  
Antimicrobial Activities ◽  
Spectroscopic Studies ◽  
Diffusion Method ◽  
Tem Analysis ◽  
Alpinia Galanga ◽  
Microwave Assisted ◽  
Physicochemical Methods ◽  
Crystalline Nature

Biomediated methods are considered to be a safer alternative to conventional physicochemical methods for the fabrication of nanomaterials due to their eco-friendly nature. In the present study, silver nanoparticles (AgNPs) were synthesized by microwave irradiation using aqueous rhizome extract of the medicinal plant Alpinia galanga. The nanoparticles were also synthesized under ambient condition without the assistance of microwave radiation and the former method was found to be much faster than the latter. The silver nanoparticles were characterized by UV-vis., FTIR, XRD, and HR-TEM analysis. UV-vis. spectroscopic studies provided ample evidences for the formation of nanoparticles. The FTIR spectrum confirmed the presence of plant phytochemicals as stabilizing agent around the AgNPs. XRD and HR-TEM analyses clearly proved the crystalline nature of the nanoparticles. From the TEM images, the nanoparticles were found to be roughly spherical in shape with an average diameter of 20.82 ± 1.8 nm. The nanoparticles showed outstanding catalytic activity for the reduction of methyl orange by NaBH4. The AgNPs were also evaluated for their antimicrobial activity by well diffusion method against S. aureus, B. subtilis, V. cholera, S. paratyphi, and A. niger. They were found to be highly toxic against all the tested pathogenic strains.

scholarly journals Antioxidant and Antidiabetic Activities of Biologically Synthesized Silver Nanoparticles using Linumusitatissimum Extract

2021 ◽  
Vol 37 (5) ◽  
pp. Kanmani-R
Author(s):  
Kanmani R ◽  
IrudayaIrin Scleeva P
Keyword(s):  
Silver Nanoparticles ◽  
Research Work ◽  
Radical Scavenging ◽  
Xrd Analysis ◽  
Spectroscopic Studies ◽  
Uv Spectra ◽  
Alpha Amylase ◽  
Ir Spectroscopic ◽  
Flaxseed Extract

This research work was mainly focused to study the anti-oxidant and anti-diabetic activities of biologically synthesis of silver nanoparticles (AgNPs) from the flaxseed extract of Linumusitassimum. Qualitative tests identify the presence of phytochemicals in the flaxseed extract and its results showed the presence of tannins, terpenoids, saponins, flavonoids, steroids, cardiac glycosides, anthraquinones, coumarins, xanthoproteins, alkaloids, emodins, and carbohydrate in it. Preliminarily AgNPs formation is confirmed by the UV spectra and it showed maximum adsorption band at 438nm. FT-IR spectroscopic studies reveal the Phyto-constituents which are involved in the reduction of silver (Ag+1) into silver nanoparticles (Ag0). The spherical shapes of AgNPs are observed with crystalline nature are found in the aid of SEM and XRD analysis. Synthesized AgNPs have the maximum percentage of a silver element which is examined by the EDX analysis. The in-vitro antioxidant and antidiabetic activities of L. usitatissimummediated AgNPs were analyzed by using the DPPH, alpha-amylase, and alpha glycosides assays respectively. The DPPH result shows that the AgNPs possess 59.01% of radical scavenging property and the standard ascorbic acid reveals 48.63% at 100µg/ml concentration. Similarly in anti-diabetic activity, AgNPs shows the maximum inhibition of 79.84% in the alpha-amylase assay, and for alpha-glucosidase, AgNPs showed 58.86% at 100µg/ml concentration.

CP-MAS and FT-IR spectroscopic studies of new derivatives of gossypol in solid

2005 ◽  
Vol 751 (1-3) ◽  
pp. 151-155 ◽  
Author(s):  
Piotr Przybylski ◽  
Grzegorz Bejcar ◽  
Wojciech Schilf ◽  
Bogumil Brzezinski ◽  
Franz Bartl
Keyword(s):  
Spectroscopic Studies ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Derivatives Of

Spectroscopic Study of the Uranyl—Acetohydroxamate Adduct with Tributyl Phosphate

2007 ◽  
Vol 61 (7) ◽  
pp. 772-776 ◽  
Author(s):  
Peter Tkac ◽  
Alena Paulenova ◽  
Kevin P. Gable
Keyword(s):  
Acetic Acid ◽  
Organic Phase ◽  
Tributyl Phosphate ◽  
Chelate Ring ◽  
Spectroscopic Studies ◽  
Acetohydroxamic Acid ◽  
Ft Ir ◽  
Uranium Distribution ◽  
Ir Spectroscopic ◽  
Hydrolysis Of

The ultraviolet–visible (UV-Vis) and Fourier transform infrared (FT-IR) spectroscopic studies carried out for the system UO2(NO3)/AHA/TBP (uranyl–acetohydroxamate–tributyl phosphate) confirmed the presence of the adduct of UO2(NO3)(AHA) ·2TBP with 1:1 stoichiometry for UO2:AHA (acetohydroxamic acid). The spectrum of this complex is identical to the infrared spectrum of the organic phase formed in the uranium distribution experiments with 30% TBP/n-dodecane and AHA present in aqueous phase. Disappearance of the hydroxyl stretching band and a shift in the position of the carbonyl band in the infrared spectra revealed that both the hydroxyl and the carbonyl group of acetohydroxamic acid are involved in the chelate ring with uranium. Also, acetic acid, accrued after acidic hydrolysis of acetohydroxamic acid, was identified in the extraction organic phase.

scholarly journals Investigation on optical, electrical and etching properties of 2-aminopyridinium 4-aminobenzoate: A phase matchable organic single crystal for optoelectronic device applications

2017 ◽  
Vol 35 (1) ◽  
pp. 126-134 ◽  
Author(s):  
L. Chandra ◽  
J. Chandrasekaran ◽  
K. Perumal ◽  
B. Babu ◽  
V. Jayaramakrishnan
Keyword(s):  
Optoelectronic Device ◽  
Spectroscopic Studies ◽  
Average Particle ◽  
Dielectric Study ◽  
X Ray Diffraction ◽  
Device Applications ◽  
Evaporation Technique ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Homo Lumo

AbstractNLO active 2-aminopyridinium 4-aminobenzoate (APAB) single crystals were successfully grown by the standard slow evaporation technique. The crystallinity of the grown crystals was analyzed through X-ray diffraction (XRD) measurements. Fourier transform infrared (FT-IR) spectroscopic studies were also performed for the identification of different modes present in the compound. The UV-Vis absorption and transmittance spectra were recorded for the grown crystal and the optical band gap was calculated. Birefringence and etching studies were also carried out. The dielectric study showed that the dielectric constant decreased with an increase in frequency. The photoconductivity study revealed its positive photoconducting nature. Theoretical HOMO LUMO investigations were also made for the crystal. The relative SHG efficiency of the material was investigated by the Kurtz and Perry powder technique. The phase matching property of the crystal was studied through the SHG dependence of average particle sizes.

Dynamic FT-IR Spectroscopic Studies of Silk Fibroin Films

1997 ◽  
Vol 51 (4) ◽  
pp. 545-547 ◽  
Author(s):  
Masashi Sonoyama ◽  
Mitsuhiro Miyazawa ◽  
Gen Katagiri ◽  
Hideyuki Ishida
Keyword(s):  
Ir Spectra ◽  
Phase Analysis ◽  
Silk Fibroin ◽  
Spectroscopic Studies ◽  
Cast Films ◽  
Dynamic Spectra ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Overlapping Bands ◽  
Good Agreement

Dynamic FT-IR spectra in the amide I region were measured for silk fibroin cast films. Phase analyses of the dynamic spectra were carried out in order to separate them into several components which are due to the secondary structures of fibroin. These observations showed that peak positions of the amide I bands were in good agreement with those obtained by Fourier self-deconvolution procedures. In conclusion, phase analysis of dynamic FT-IR spectra is a powerful technique for separation of highly overlapping bands.

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