Bioactive Compound in Urginea indica (Kunth.) from Bastar and its Spectral Analysis by HPLC, UV-Vis, FT-IR, NMR, and ESI-MS

2019 ◽  
Vol 1 (4) ◽  
pp. 241-254
Author(s):  
Dhananjay Pandey ◽  
A. K. Gupta
Keyword(s):  
Spectral Analysis ◽  
Bioactive Compound ◽  
Esi Ms ◽  
Ft Ir ◽  
Urginea Indica

Enhanced Anticancer Activity and Apoptosis Effect of Bioactive Compound Quercetin Extracted from Ocimum sanctum Leaves

2020 ◽  
Vol 10 ◽  
Author(s):  
Amutha Santhanam ◽  
Naveen Kumar Chandrasekharan ◽  
Rajangam Ilangovan
Keyword(s):  
Cell Cycle ◽  
Anticancer Activity ◽  
Cancer Cells ◽  
Leaf Extract ◽  
Nickel Nanoparticles ◽  
Bioactive Compound ◽  
Cell Cycle Analysis ◽  
Ocimum Sanctum ◽  
Sem Images ◽  
Ft Ir

Background: The occurrence of Cancer results in cellular changes that causes the uncontrolled growth and division of cells. Apoptosis removes cells during development and eliminates the potentially cancerous cells. The bioactive compounds present in the herbal plant shows cytotoxic activity that result in apoptosis. The traditional herbal plants are used world-wide both in allopathy and other traditional ways. Objective: The main objective of this study is to extract the bioactive compound Quercetin from the medicinally significant plant Ocimum sanctum and also to develop nanomedicine as Qu-PEG-NiGs. Materials and Methods: Leaf extract of the medicinally significant plant Ocimum sanctum (O. sanctum) has been used for the synthesis of nickel nanoparticles (NiGs) and extraction of quercetin (Qu). The ethanolic extract of Ocimum sanctum is added to 1 mM Nickel Nitrate (Ni(NO3)2) and stirred for 3 hrs at RT and dried at 60°C for 3hrs and calcinated at 400°C for 2hrs and characterized using Uv-Vis Spectrophotometer, FT-IR, SEM, DLS and Zeta potential. The Quercetin is isolated from Ocimum sanctum leaf extract using the reflux condenser method. The bio-polymer is being PEG-coated over NiGs and Quercetin is loaded into it. The apoptosis activity using MCF-7 cells is performed with Qu-PEG-NiGs. The purity of Quercetin is characterized using HPLC. In order to analyse apoptosis efficiency, MTT assay, Reactive Oxygen Species (ROS), Cell cycle analysis has been performed. Results: The NiGs absorption spectrum gives a peak at 408nm. The FT-IR confirms the presence of particular functional groups shifting from the compound NiGs and then coated with PEG-Qu-NiGs. The SEM images show the size of NiGs ranging from 27.3 nm to 40.4 nm with varied morphology such as hexagonal and other irregular shapes. The presence of Quercetin extracted from the leaf powder is approximately 1.5 mg/g. The ROS results show the Qu-PEG-NiGs induced efficiency of the apoptosis, while the increased concentrations promote ROS and lead to activation of the apoptosis. The cell cycle analysis has shown the cytotoxic effect. Conclusion: PEG-coated nickel nanoparticles can be used as a promising chemotherapeutic agent against MCF7 breast cancer cells. It is the evidence to further studies for evaluating Qu-PEG-NiGs anticancer activity on different types of cancer cells.

Synthesis of N2, N6-bis(5-methylthiazol-2-yl)pyridine-2,6-dicarboxamide fluoroscent sensor for detection of Cu2+ and Ni2+ Ions

Drug Research ◽  
2021 ◽  
Author(s):  
Anuroop Kumar ◽  
Netrapal Singh ◽  
Mordhwaj Kumar ◽  
Uma Agarwal
Keyword(s):  
Spectral Analysis ◽  
Detection Limit ◽  
Metal Ions ◽  
1H Nmr Spectroscopy ◽  
Stoichiometric Ratio ◽  
Selective Detection ◽  
Ft Ir ◽  
Uv Visible ◽  
Complexes With Metal Ions ◽  
Competitive Ions

AbstractThis article reports an amide based Chemosensor used for selective detection of divalent Cu+2 and Ni+2 ions via Fluorescence turn off. The selective sensing ability of Chemosensor was investigated in presence of different metal ions Mg2+, Ag+, Fe2+, K+, Cu2+, Ni2+, Hg2+, Pb2+, Mn2+, Pd2+, Cd2+ and Mn3+ as competitive ions. The receptor i. e. Chemosensor formed complexes with metal ions in 1:1 stoichiometric ratio. The detection limit and binding constant calculated as 1.92×10–4 and 1.4×10–4 M and 2.16×103 M−1 and 3.09×103 M−1 for Cu2+ and Ni2+ions respectively. The complexes were characterized by UV/visible, FT-IR, 13C NMR and 1H NMR spectroscopy. Further the structure and Crystallinity were calculated by P-XRD spectral analysis. The crystallinity found to be 65.27 and 67.87% respectively

scholarly journals A highly sensitive octopus-like azobenzene fluorescent probe for determination of abamectin B1 in apples

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhenlong Guo ◽  
YiFei Su ◽  
Kexin Li ◽  
MengYi Tang ◽  
Qiang Li ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Limit Of Detection ◽  
Quantitative Detection ◽  
Fluorescence Signal ◽  
Ionization Mass ◽  
Limit Of Quantification ◽  
Visible Absorption ◽  
Esi Ms ◽  
Relative Standard ◽  
Ft Ir

AbstractThe development of detecting residual level of abamectin B1 in apples is of great importance to public health. Herein, we synthesized a octopus-like azobenzene fluorescent probe 1,3,5-tris (5′-[(E)-(p-phenoxyazo) diazenyl)] benzene-1,3-dicarboxylic acid) benzene (TPB) for preliminary detection of abamectin B1 in apples. The TPB molecule has been characterized by ultraviolet–visible absorption spectrometry, 1H-nuclear magnetic resonance, fourier-transform infrared (FT-IR), electrospray ionization mass spectroscopy (ESI-MS) and fluorescent spectra. A proper determination condition was optimized, with limit of detection and limit of quantification of 1.3 µg L−1 and 4.4 μg L−1, respectively. The mechanism of this probe to identify abamectin B1 was illustrated in terms of undergoing aromatic nucleophilic substitution, by comparing fluorescence changes, FT-IR and ESI-MS. Furthermore, a facile quantitative detection of the residual abamectin B1 in apples was achieved. Good reproducibility was present based on relative standard deviation of 2.2%. Six carboxyl recognition sites, three azo groups and unique fluorescence signal towards abamectin B1 of this fluorescent probe demonstrated reasonable sensitivity, specificity and selectivity. The results indicate that the octopus-like azobenzene fluorescent probe can be expected to be reliable for evaluating abamectin B1 in agricultural foods.

Structural, vibrational (FT-IR and FT-Raman) and UV–Vis spectral analysis of 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea by DFT method

2012 ◽  
Vol 95 ◽  
pp. 331-340 ◽  
Author(s):  
C. Meganathan ◽  
S. Sebastian ◽  
I. Sivanesan ◽  
Keun Woo Lee ◽  
Byoung Ryong Jeong ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Dft Method ◽  
Ft Ir ◽  
Ft Raman

Crystal Growth, Spectral, Thermal and Optical Properties of Phthalic Anhydride (PA) Single Crystal

2012 ◽  
Vol 584 ◽  
pp. 136-140 ◽  
Author(s):  
S. Janarthanan ◽  
Y.C. Rajan ◽  
R. Sugaraj Samuel ◽  
S. Pandi
Keyword(s):  
Spectral Analysis ◽  
Single Crystal ◽  
Phthalic Anhydride ◽  
Second Harmonic ◽  
Organic Crystals ◽  
X Ray Diffraction ◽  
Fundamental Wavelength ◽  
Ft Ir ◽  
Raman Spectral ◽  
Raman Spectral Analysis

ABSTRACT Organic single crystal of Phthalic Anhydride (PA) was successfully grown by slow evaporation method. The structure of the grown crystal was confirmed by X-ray diffraction analysis. FT-IR, and FT-Raman spectral analysis of the crystalline samples reveal that the crystalline sample consists of all functional groups. The placement of protons was identified from H1-NMR spectral analysis. UV-Visible and photoluminescence spectral analyses were carried out for the grown crystals. The thermal behavior was studied with TGA-DTA analyses. The existence of second harmonic generation (SHG) signal was observed using Nd:YAG laser with a fundamental wavelength of 1064 nm. Keywords: Organic crystals, NLO crystals

NMR, FT-IR, ESI MS and PM5 semiempirical study of new lasalocid 5-hydroxy-3-oxapentyl ester and its complexes with monovalent cations

2005 ◽  
Vol 733 (1-3) ◽  
pp. 155-165 ◽  
Author(s):  
Radosław Pankiewicz ◽  
Grzegorz Schroeder ◽  
Bogumił Brzezinski
Keyword(s):  
Monovalent Cations ◽  
Esi Ms ◽  
Ft Ir

scholarly journals Chitosan and Carboxymethyl Chitosan from Fish Scales of Labeo rohita

2013 ◽  
Vol 61 (1) ◽  
pp. 145-148 ◽  
Author(s):  
Tanvir Muslim ◽  
Mohammad Habibur Rahman ◽  
HOsne Ara Begum ◽  
Md. Azizur Rahman
Keyword(s):  
Molecular Weight ◽  
Spectral Analysis ◽  
Labeo Rohita ◽  
Carboxymethyl Chitosan ◽  
Degree Of Substitution ◽  
Monochloroacetic Acid ◽  
Fish Scales ◽  
Ft Ir

Chitin was extracted from the fish scales of Labeo rohita and chitosan was successfully prepared from it by deacetylation reaction. The prepared chtiosan was characterized by FT-IR spectral analysis and degree of decetylation was determined by pH-metric titration. The molecular weight of chitosan was estimated by viscometric method. Chitosan was converted into its carboxymethyl derivative using alkali and monochloroacetic acid. The prepared carboxymethyl chitosan was characterized by FT-IR spectral analysis and degree of substitution was estimated. Dhaka Univ. J. Sci. 61(1): 145-148, 2013 (January) DOI: http://dx.doi.org/10.3329/dujs.v61i1.15116

scholarly journals Study on Soy-Based Adhesives Enhanced by Phenol Formaldehyde Cross-Linker

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 365 ◽  
Author(s):  
Zhigang Wu ◽  
Xuedong Xi ◽  
Hong Lei ◽  
Jiankun Liang ◽  
Jingjing Liao ◽  
...  
Keyword(s):  
13C Nmr ◽  
Soy Protein ◽  
Water Resistance ◽  
Phenol Formaldehyde ◽  
Ionization Mass ◽  
Model Compounds ◽  
Esi Ms ◽  
13C Nuclear Magnetic Resonance ◽  
Ft Ir ◽  
Cross Linker

To find the effects of cross-linker phenol-formaldehyde (PF) resin on the performance of soy-based adhesives, the reaction between model compounds hydroxymethyl phenol (HPF) and glutamic acid were studied in this paper. HPF prepared in laboratory conditions showed higher content of hydroxymethyl groups than normal PF resin, which was proved by the results of Electrospray Ionization Mass Spectrometry (ESI-MS) and 13C Nuclear Magnetic Resonance (13C-NMR). The results of ESI-MS, Fourier transform infrared spectroscopy (FT-IR), and 13C-NMR based on resultant products obtained from model compounds showed better water resistance of the soy protein-based adhesive modified by PF-based resin, which indicated the reaction between PF resin and soy protein. However, it seemed that the soy-based adhesive cross-linked by HPF with the maximum content of hydroxymethyl groups did not show the best water resistance.

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