13 results on '"Sonika Arti"'
Search Results
2. Micellization Behaviour of Cationic Surfactants in the Presence of Food Additives: Conductance and Spectroscopic Investigations
- Author
-
Neha Aggarwal and Sonika Arti
- Subjects
Combinatorics ,food.ingredient ,food ,Chemical engineering ,Chemistry ,Food additive ,Cationic polymerization ,Conductance ,Earth-Surface Processes - Abstract
Aim: The micellization behavior of cationic surfactants has been studied in the presence of food additives. Objectives: Micellization behaviour of cationic surfactants, Cetyltrimethylammonium Bromide (CTAB) and Tetradecyltrimethylammonium Bromide (TTAB) has been studied in water and in various concentrations of salts (food additives) L-glutamic acid, sodium propionate, sodium citrate tribasic dihydrate and disodium tartrate dihydrate at (298.15, 308.15 and 318.15) K. Methods: Two methods used in the present study are specific conductance measurements and spectroscopy (NMR) studies. Results: From the specific conductance(κ), various parameters such as Critical Micelle Concentration (CMC), degree of ionization of micelle (α), standard Gibbs free energy (ΔG°m), enthalpy (ΔH°m), and entropy (ΔS°m) of micellization have also been calculated. Thermodynamic parameters related to the micellization process were also analyzed through NMR studies. Conclusion: The CMC values are influenced by the presence of food additive. The magnitude of CMC values increases with an increase in the concentration of food additive. In all the cases, enthalpy of micellization, ΔH°m values are found to be negative, whereas entropy of micellization, ΔS°m values are positive, which indicates that hydrophobic interactions play a major role in the micellization process. Moreover, NMR studies reveal that tartrate and citrate are more hydrated than glutamic acid and propionate, resulting in a more downfield shift.
- Published
- 2021
- Full Text
- View/download PDF
3. Drug nanocrystals as nanocarrier-based drug delivery systems
- Author
-
Sonika Arti, Monika Bharti, Vaneet Kumar, null Saruchi, Vikrant Rehani, and Jitender Dhiman
- Published
- 2022
- Full Text
- View/download PDF
4. Contributors
- Author
-
Victoria Adams, S. Wazed Ali, Hafiz Muhammad Ali, Bagh Ali, Khairunnisa Amreen, Pandey Annu, Manju Arora, A. Arputharaj, Sonika Arti, A. Arulraj, N.M. Ashtaputre, Anu Bala, Manas Barik, Srijita Basumallick, Monika Bharti, Uddhaba Biswal, Oladotun Paul Bolade, Deepika S. Brijpuriya, Shalini Chaturvedi, Chikaodili E. Chukwuneke, Shilpa Dabas, Pragnesh N. Dave, Naresh Kumar Dhiman, Jitender Dhiman, Anchita Diwan, Yanchen Dolma, Mohammed El Hadi Attia, Ugochukwu Ewuzie, Sanket Goel, Santosh Singh Golia, Shikha Gulati, Deepika Gupta, Jayanth S. Hampapura, Mehran Hashemian, S. Imran Hussain, Chaudhery Mustansar Hussain, Ahmed Kadhim Hussein, Mithu Maiti Jana, Asim Kumar Jana, Rajeev Jindal, Ravi-Kumar Kadeppagari, Karthik Kannan, S. Karthick, Lioua Kolsi, Aruna Jyothi Kora, Rakesh Kumar, Sanjay Kumar, Anupama Kumar, Vaneet Kumar, Kannappan Lakshmi, Shadpour Mallakpour, B. Mallikarjuna, R.V. Mangalaraja, Murugan Senthil Mani Rajan, Shashi Kiran Misra, Ayush Mongia, Karuppiah Muthu, Suganthi Nachimuthu, Mina Naghdi, Rasoul Nikbakhti, Anika Parmar, Parth Patel, Kamla Pathak, Dilip R. Peshwe, Ashwini Prabhu, K.S. Prakash, Rajmohan Rangasamy, Gita Rani, Vinitha Rani, R. Rashmi, Vikrant Rehani, Chandan Kumar Sahu, null Saruchi, Veerender Sharma, Parinita Singh, Ayushi Singhal, Charlene D’ Souza, Saravanan Subramanian, S. Thangavel, Jayachandran Venkatesan, N. Vigneshwaran, and Obai Younis
- Published
- 2022
- Full Text
- View/download PDF
5. To study the interactions between saccharide/their derivatives and bactericidal cefadroxil drug: Volumetric, acoustic and molecular docking studies
- Author
-
Tushar K. Ghosh, Sonika Arti, Parampaul K. Banipal, Kamaljeet Kaur, and Tarlok S. Banipal
- Subjects
Molality ,Molecular interactions ,Aqueous solution ,Isentropic process ,Chemistry ,Atomic and Molecular Physics, and Optics ,Computational chemistry ,Cefadroxil ,medicine ,Molecule ,General Materials Science ,Physical and Theoretical Chemistry ,Binding site ,medicine.drug - Abstract
Volumetric, acoustic and molecular docking investigations are helpful to elucidate the molecular interactions occurring between saccharides/derivatives with cefadroxil drug in aqueous solution. The density, ρ and speed of sound, u were measured for saccharides and their derivatives, in molality, mB = (0.001–0.004) mol∙kg−1 aqueous solutions of cefadroxil at temperatures, T = (288.15, 298.15, 308.15, 318.15) K. These values were used to retrieve the corresponding values of standard partial molar volumes, V2° and partial molar isentropic compressibilties, K°s,2 at infinite-dilution. From these data, the transfer properties (ΔtrV2° and ΔtrK°s,2) for saccharides from water to aqueous solutions of cefadroxil have been evaluated. These parameters provide an essence about the type and nature of interactions occurring between saccharide (solute) and cefadroxil drug. Further, the molecular docking studies have also been carried out, which give information about the active groups present in both solutes and cefadroxil molecules at the binding site. Both the experimental and theoretical studies show that the distinct stereochemical –OH group present in the studied saccharides/derivatives interact differently with the cefadroxil molecule. The theoretical studies also show that the –NH, –NH2, >C O and –COOH groups of cefadroxil participate more actively at the binding site.
- Published
- 2021
- Full Text
- View/download PDF
6. Understanding the interactions of polyhydroxy solutes with ammonium salts in aqueous solutions via calorimetric and spectroscopic studies at different temperatures
- Author
-
Tarlok S. Banipal, Parampaul K. Banipal, and Sonika Arti
- Subjects
chemistry.chemical_classification ,Ammonium bromide ,Molality ,Aqueous solution ,Inorganic chemistry ,Enthalpy ,02 engineering and technology ,010402 general chemistry ,Condensed Matter Physics ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,020401 chemical engineering ,chemistry ,Materials Chemistry ,Ammonium ,Titration ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Spectroscopy ,Tetraethylammonium bromide ,Alkyl - Abstract
Enthalpy change, q of polyhydroxy solutes; (+)- d -xylose, xylitol, (−)- l -sorbose, d -sorbitol, (+)- d -glucose, and (+)- d -maltose monohydrate have been measured in water and in aqueous (0.10, 0.15, 0.25, and 0.35) mol·kg− 1 ammonium bromide (NH4Br) and (0.15, 0.25, and 0.35) mol·kg− 1 tetraethylammonium bromide (Et4NBr) solutions at T = (288.15, 298.15, 308.15, and 318.15) K by using isothermal titration microcalorimeter. From the data q, the limiting standard enthalpies of dilution (ΔdilH°) and their corresponding transfer parameters (ΔtΔdilH°) have been evaluated. The enthalpic interaction coefficients that characterize the interactions of polyhydroxy solutes with ammonium salts in aqueous solutions were determined from ΔtΔdilH° values. Proton (1H) NMR spectra were recorded for mB = (0.15, 0.25 and 0.35) mol·kg− 1 tetraethylammonium bromide solutions and in ternary solutions {polyhydroxy solute + Et4NBr + 9:1 (w/w) H2O + D2O}, where the molality of solute has been fixed as mA = 0.25 mol·kg− 1. The comparison of NMR results shows more upfield shift in ternary solutions than in pure alkyl ammonium salt solution, thereby suggesting the predominance of hydrophobic-ionic interactions over hydrophilic-ionic interactions.
- Published
- 2017
- Full Text
- View/download PDF
7. Volumetric, viscometric and 1 H NMR spectroscopic studies in (polyhydroxy solute + CTAB + H 2 O) ternary solutions
- Author
-
Sonika Arti, Tarlok S. Banipal, and Parampaul K. Banipal
- Subjects
Chromatography ,Analytical chemistry ,02 engineering and technology ,010402 general chemistry ,Sorbose ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Solvent ,chemistry.chemical_compound ,Viscosity ,020401 chemical engineering ,Pulmonary surfactant ,chemistry ,Bromide ,Polyhydroxy compound ,Proton NMR ,General Materials Science ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Ternary operation - Abstract
To investigate the molecular interactions of polyhydroxy solutes with cetyltrimethylammonium bromide (CTAB) surfactant, we have measured the densities and viscosities of (+)- d -xylose, xylitol, (−)- l -sorbose, d -sorbitol, (+)- d -glucose, and (+)- d -maltose in (4.0, 8.0, and 12.0) · 10−4 mol·kg−1 CTAB(aq) solutions at (298.15, 308.15 and 318.15) K. The density data have been utilized to evaluate apparent molar volumes (V2,ϕ), partial molar volumes (V2°) and their transfer (ΔtV2°) values at infinite-dilution. The viscosity data were analyzed using the Jones-Dole equation and further used to calculate the viscosity B-coefficients and transfer B-coefficients, ΔtB. The structure-making/-breaking behavior of the polyhydroxy solutes were analyzed using the signs and magnitude of (∂2V2°/∂T2)P and dB/dT coefficients. It has been observed that the positive ΔtV2° and ΔtB values increase with increasing CTAB concentration. 1H NMR spectroscopic study of polyhydroxy solutes was also carried out in mB = (4.0, 8.0, and 12.0) · 10−4 mol·kg−1 CTAB solutions which were made in 9:1 (w/w) H2O + D2O solvent. NMR results showed higher downfield shift in ternary (polyhydroxy solute + CTAB + 9:1 (w/w) H2O + D2O) solutions as compared to pure CTAB solution, hence suggested the predominance of hydrophilic-ionic interactions over hydrophobic-ionic interactions.
- Published
- 2017
- Full Text
- View/download PDF
8. Interactional behavior of saccharides/derivatives with amoxicillin drug in aqueous medium: Insights from volumetric, calorimetric and spectroscopic studies
- Author
-
Parampaul K. Banipal, Kamaljeet Kaur, Tarlok S. Banipal, and Sonika Arti
- Subjects
Aqueous solution ,Proton ,Chemistry ,Amoxicillin ,Condensed Matter Physics ,Heat capacity ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Dilution ,NMR spectra database ,Solvent ,Materials Chemistry ,medicine ,Physical chemistry ,Molecule ,Physical and Theoretical Chemistry ,Spectroscopy ,medicine.drug - Abstract
The physicochemical studies are significant in understanding the molecular interactions of saccharides and their derivatives with amoxicillin drug in aqueous solution. Therefore, the apparent molar volumes (V2,ϕ), and the limiting standard molar enthalpies of dilution (ΔdilH∞m) of saccharides and their derivatives in (0.001, 0.002, 0.003 and 0.004) mol·kg–1 aqueous solutions of amoxicillin were determined from the precise density, ρ and heat change, q measurements at (288.15, 298.15, 308.15 and 318.15) K under pressure, p = 0.1 MPa. The data were processed to obtain the corresponding transfer volumes (ΔtrV2∞) and enthalpies of dilution of transfer (ΔtΔdilH∞m) of solutes from water into aqueous solutions of amoxicillin. The volumetric expansion coefficients (∂V2∞/∂T)P, their second-order derivatives (∂2V2∞/∂T2)P and heat capacity change (∆dilC∞p,2,m) were also determined. Proton (1H) NMR spectra for mA = 0.02 mol·kg–1 saccharides/derivatives were also recorded in different molalities, mB = 0.001, 0.002, 0.003 and 0.004 mol·kg–1 of amoxicillin solution prepared in solvent {9:1 H2O + D2O}. The NMR results show that the Hc proton of amoxicillin has more activity (acidity) and it interacts more with the solute molecules (saccharide/derivative) than other protons of amoxicillin.
- Published
- 2021
- Full Text
- View/download PDF
9. Host-guest interaction of trimethoprim drug with cyclodextrins in aqueous solutions: Calorimetric, spectroscopic, volumetric and theoretical approach
- Author
-
Tarlok S. Banipal, Parampaul K. Banipal, Sonika Arti, Tushar K. Ghosh, Kamaljeet Kaur, and Jagroop Kaur
- Subjects
Drug ,Molecular model ,Internal cavity ,media_common.quotation_subject ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Dynamic light scattering ,Materials Chemistry ,medicine ,Molecule ,Physical and Theoretical Chemistry ,Spectroscopy ,media_common ,Aqueous solution ,Chemistry ,technology, industry, and agriculture ,Isothermal titration calorimetry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Trimethoprim ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Physical chemistry ,0210 nano-technology ,medicine.drug - Abstract
Owing to the internal cavity of cyclodextrins, they are very notable to form the inclusion complexes with various drugs. In present work, the binding of trimethoprim (TMP) drug with native α-, β-, and γ-cyclodextrins (CDs) were systematically examined using the isothermal titration calorimetry (ITC), spectroscopic {UV–visible, nuclear magnetic resonance (NMR)} methods, dynamic light scattering (DLS) and molecular modeling of the complex formed by host (cyclodextrins) and guest (trimethoprim) molecules. The stability of the TMP-CDs inclusion complexes increases in the following order: α-CD
- Published
- 2021
- Full Text
- View/download PDF
10. Influence of polyhydroxy compounds on the micellization behaviour of cetyltrimethylammonium bromide: Conductance and microcalorimetric investigations
- Author
-
Parampaul K. Banipal, Sonika Arti, and Tarlok S. Banipal
- Subjects
Enthalpy ,Thermodynamics of micellization ,Inorganic chemistry ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Micelle ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Gibbs free energy ,Degree of ionization ,chemistry.chemical_compound ,symbols.namesake ,chemistry ,Bromide ,Polyhydroxy compound ,Critical micelle concentration ,Materials Chemistry ,symbols ,Physical and Theoretical Chemistry ,0210 nano-technology ,Spectroscopy - Abstract
Micellization behaviour of cationic surfactant; cetyltrimethylammonium bromide (CTAB) has been studied in water and in aqueous solutions of polyhydroxy compounds (PHC) as solvents at (298.15, 308.15 and 318.15) K using specific conductance and isothermal titration calorimetric (ITC) measurements. From the specific conductance (κ), various parameters such as critical micelle concentration (CMC), degree of ionization of micelle (β), standard Gibbs free energy (ΔGom), enthalpy (ΔHom), and entropy (ΔSom) of micellization have also been calculated. The CMC values of CTAB increase with rise of temperature and decrease linearly with increase in the concentration of PHC. The ITC measurements provide additional insights into the various thermodynamic parameters associated with the micellization process. The results from both techniques have been used to study the influence of PHC on the micellization behaviour of the surfactant.
- Published
- 2016
- Full Text
- View/download PDF
11. Study of thermodynamic properties of sodium dodecyl sulphate in aqueous solutions of alkoxyalkanols at different temperatures
- Author
-
Kirtanjot Kaur, Sonika Arti, Harsh Kumar, and Meenu Singla
- Subjects
Aqueous solution ,010304 chemical physics ,Isentropic process ,Chemistry ,Inorganic chemistry ,Analytical chemistry ,Ether ,02 engineering and technology ,Condensed Matter Physics ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Apparent molar property ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,Molar volume ,020401 chemical engineering ,Pulmonary surfactant ,Speed of sound ,0103 physical sciences ,Materials Chemistry ,0204 chemical engineering ,Physical and Theoretical Chemistry ,Ethylene glycol ,Spectroscopy - Abstract
Densities, ρ, speed of sound, u , for aqueous solutions of alkoxyalkanols like ethylene glycol mono methyl ether (EGMME), ethylene glycol mono ethyl ether (EGMEE) and ethylene glycol mono butyl ether (EGMBE) have been measured in aqueous solutions of surfactant sodium dodecyl sulphate (SDS) at temperatures T = (288.15, 298.15, 308.15 and 318.15) K have been measured. The different parameters such as apparent molar volume, limiting apparent molar volume, transfer volume, partial molar expansibility have been derived from density data to study the nature of interactions and also the aggregation behavior of surfactant with alkoxyalkanols. Experimental speeds of sound data were used to estimate apparent molar isentropic compression, limiting apparent molar isentropic compression, partial molar isentropic compression of transfer. The pair and triplet interaction coefficient have been calculated from both the properties. These parameters have been discussed in the light of ion-ion and ion-solvent interactions.
- Published
- 2016
- Full Text
- View/download PDF
12. Influence of NH4Br on Solvation Behavior of Polyhydroxy Solutes in Aqueous Solutions at Different Temperatures and Atmospheric Pressure
- Author
-
Tarlok S. Banipal, Parampaul K. Banipal, and Sonika Arti
- Subjects
Viscosity ,Aqueous solution ,Atmospheric pressure ,Chemistry ,General Chemical Engineering ,Solvation ,Thermodynamics ,Isobaric process ,General Chemistry ,Atmospheric temperature range ,Ternary operation ,Dilution - Abstract
Precise density and viscosity measurements on ternary solutions (polyhydroxy solute + NH4Br + H2O) have been carried out over the temperature range (288.15 to 318.15) K at atmospheric pressure. Partial molar volumes, V2° at infinite dilution and the Jones-Dole B-coefficients obtained from above data were utilized to estimate the transfer parameters (ΔtV2° and ΔtB) for polyhydroxy solutes. The interaction coefficients were obtained from the transfer values using the McMillan–Mayer theory of solutions. Isobaric expansion coefficients and second-order derivatives {(∂V2°/∂T)P, (∂2V2°/∂T2)P}, and dB/dT coefficients were also determined to study the effect of temperature. These parameters were used to understand the kosmo-/chaotropic nature of solutes and cosolute which is helpful in rationalizing the mixing effects due to interactions between them in these solutions, concomitantly keeping the stereochemical differences of the polyhydroxy solutes in view.
- Published
- 2015
- Full Text
- View/download PDF
13. Influenceof NH4Br on Solvation Behaviorof Polyhydroxy Solutes in Aqueous Solutions at Different Temperaturesand Atmospheric Pressure.
- Author
-
Parampaul K. Banipal, Sonika Arti, and Tarlok S. Banipal
- Subjects
- *
SOLVATION , *AQUEOUS solutions , *TEMPERATURE measurements , *ATMOSPHERIC pressure , *VISCOSITY , *DILUTION - Abstract
Precise density and viscosity measurementson ternary solutions(polyhydroxy solute + NH4Br + H2O) have beencarried out over the temperature range (288.15 to 318.15) K at atmosphericpressure. Partial molar volumes, V2°at infinite dilution andthe Jones-Dole B-coefficients obtained from abovedata were utilized to estimate the transfer parameters (ΔtV2°and ΔtB) for polyhydroxy solutes. The interaction coefficients were obtainedfrom the transfer values using the McMillan–Mayer theory ofsolutions. Isobaric expansion coefficients and second-order derivatives{(∂V2°/∂T)P, (∂2V2°/∂T2)P}, and dB/dTcoefficients were also determinedto study the effect of temperature. These parameters were used tounderstand the kosmo-/chaotropic nature of solutes and cosolute whichis helpful in rationalizing the mixing effects due to interactionsbetween them in these solutions, concomitantly keeping the stereochemicaldifferences of the polyhydroxy solutes in view. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.