Prof. Mandal Publications

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Outstanding R&D achievements

The major and significant contributions of Dr Mandal are in the area of physical and biophysical chemistry associated with heterogeneous equilibria and multiphasic systems. Contributions have been made by Dr Mandal to both the developments of theory and experimental techniques pertinent to protein, peptide, micelles and reverse micellar systems.

Significant contributions:

Colloid and Surface Science

Development of exact methods to investigate micelle formation of collagen and compute hydrodynamic and thermodynamic parameters. Estimation of asymmetries in collagen molecules using Simha Einstein equation. Development of a conductivity based method for estimating bound water and hydration number of collagen and micellar systems using principles of obstruction of electrolyte migration. Has successfully analysed the transport of collagen in and out of micellar environments.
Analysis, geometry determination and quantitative estimation of the energy requirements of coil coil to random-coil conformation as well as successful demonstration that sodium dodecyl sulfate and Tween 80 (polyoxyethylene sorbitan monoleate) stabilize and CTAB (cetyl trimethyl ammonium bromide) and Urea destabilize the collagen structure. (European J.Biochem. 169, 617 628, 1987; Int.J.Biological Macromolecules, 18, 41-53, 1996.
Demonstration that hydrodynamic volume of collagen is species specific and for cosmetic preparations shark skin collagen is the most suited on the basis of hydrodynamic volume and thermodynamic considerations. (Connective Tissue Res.; Biochem.J. 249, 127 133, 1988).
Development of a cylic voltammetric based technique for the determination of critical micelle concentration and molecular weight of the surfactant using the peak current ip and half wave potential E1/2 (Langmuir, 4, 736 740, 1988; Bull.Electrochem. 4, 565 569, 1988).
Proposal of a mechanism for the transition from hydrated micelles to liquid crystalline phase through reverse and swollen micelles. (Colloid & Polym. Sci. 266, 575 578, 1988).
Development of electrochemical probe to estimate partition coefficients and the characterization of ternary systems with regard to the location of EC probe in polar and non polar regions of the microemulsions. (Langmuir, 4, 736 750, 1988; Colloid & Polym.Sci. 266, 575 578, 1988; J.Chem.Soc.Faraday Trans.87, 133 136, 1991).
Development of electroanalytical techniques for the measurements of interaction parameters, heterogeneous electron transfer rate constants and self diffusion coefficient of various micelles by using suitable EC probes and the molecular dynamics studies on micellar systems by using NMR spin lattice relaxation time measurements. (J.Phys.Chem. 95, 9008 9013, 1991); Butterworth scientific publications, London, Ch.2, pp.136 149, 1991, Langmuir, 9, 1932 1933, 1993; Langmuir, 11, 1464-1467,1995; Langmuir, 13, 2410-2414, 1997(April)).
The derivation of a new Huggins Thomas Mandal equation and the proof that Thomas constant, K1 should be 12.50 for perfectly spherical shape particles as against the 10.05 suggested earlier (JAOCS, 64, 1202 1207, 1987; Colloid & Polym.Sci. 260, 702 707, 1982).
The experimental demonstration of a method to determine the lengths of semi major and semi minor axes and the correlation times of micelles derived from nonionic surfactants like Triton X 100, Tween 80, Macromonomer and Tween 20. This work helped to resolve the controversies in the shape of micelles (spherical or ellipsoid) associated with non ionic surfactants. (J.Phys.Chem. 84, 856 859, 1980; Ind.J.Chem.24A. 670 674, 1985; J.Chem.Phys. 105, 9649-9656, 1996).
New methods to draw pseudo ternary phase diagram for systems involving as many as 5 components and to estimate activity coefficients, thermodynamic parameters and solubilization in complex systems. The effect of alcohols on the stability of mixed surfactant systems and the concept of Bluish Coacervate phase. (ACS Proceedings in : Solution behaviour of surfactants Theoretical and Applied Aspects, K.L.Mittal and E.J.Fendler, Eds. Plenum Press, New York, vol.1, pp.521 541, 1982; 63rd ACS symposium on Surfaces and Colloids, Univ. of Washington, Seattle, 1989).
Development of a technique based on 1H NMR and 13C NMR spin lattice relaxation time (T1) to probe the micellar environments of negatively and positively charged surfactants. Determination of cmc and self diffusion coefficient of polymeric surfactants using CV and Fourier Transform Pulsed Gradient Spin Echo NMR techniques (Langmuir, 11, 1464-1467, 1995). Solubilization of various carcinogenic materials in ionic micelles and molecular dynamics (J.Colloid Interface Sci., 161, 292 298, 1993; Chem.Phys.Letts. 266, 443-450, 1997)
New Micelle forming Peptide, Hydrogen Bonding, Aggregation, Conformations, Solubilization of Peptide in the various micelles in aqueous and nonaqueous solvents and their molecular dynamics and thermodynamic studies. (J.Chem.Soc. Chem.Communications, 237 238, 1993; J.Chem.Soc.Chem. Communications, 853 855, 1993; J.Chem. Soc., Faraday Trans. 89, 3075 3079, 1993; Faraday Trans. 90, 161-165, 1994; Faraday Trans. 90, 2725-2730, 1994 J.Phys.Chem, 2010 (submitted); PCCP., 2010(submitted).
Synthesis, characterization, micelle formation, geometry, self diffusion, Molecular dynamics and Thermodynamics in Aqueous solution of Methoxy polyethylene glycol macromonomer, homopolymer and graft copolymer [Macromolecules, 26, 4083 4088, 1993; Colloids & Surfaces, 1996; J.Chem.Soc., Chem.Comm., 1997. J.Chem.Phys.105, 9649-9656, 1996, Langmuir, 11, 1464-1467, 1995; Langmuir,13, 2410-2414,1997(April); Chem.Phys.Letts.,266, 443-450, 1997; (Langmuir, 16, 3957-3963, 2000) Interaction of Macromonomer with ionic surfactants in absence and presence of stearic acid matrix: Spectroscopy, Monolayer and Thermodynamic studies (Langmuir, 16, 3957-3963, 2000; Chem. Phys. Lett., 318, 35-42, 2000).
Micelle Formation of Triton X in Chloroform and its interaction with tripeptide (Boc-Val-Val-Ile) Micelles: Cyclic Voltammetry, Dynamic Light Scattering, UV-vis, Fluorescence, FTIR, NMR spectroscopy, TEM and Monolayer Techniques and Thermodynamic Studies (Submitted to J.Phys.Chem.B. 2010).
The role of various Metal-Ligand Complexes as structure breaker and maker for different surfactant Micelles (Bull. Chem. Soc. Jpn., 73, 1769-1775, 2000).
Primary and Secondary Micelle Formation of Macromonomer and its relevance to Polymerization. Comparative studies of Molecular dynamics between Macromonomer and Polymer (Submitted to Macromolecules, 2010).
The Behavior of Gold Electrode as a Microarray Electrode By the Oxidation of Thiol monolayer Using An Electrochemical Treatment (Submitted to J.Phys.Chem.)
The Effect of Various Toxicants on the Membrane of Paddy Seedlings: Electroanalytical and Kinetic Studies (Bioelectromagnetics and Biomedicine, 5, 37-46, 1996).
The shape, size, aggregation, hydration, flow behaviors, correlation times, interaction parameters, self-diffusion, electrochemical and thermodynamic studies on ionic and nonionic mixed micellar systems (J.Phys.Chem., 2010 (submitted); Chem.Phys.Letts., 2010 (submitted); Langmuir, 2010 (submitted).
The interaction of Triton X nonionic surfactants with a DPPC Phospholipid in LB Films at Air/Water interface using monolayer studies Langmuir, 2010 (submitted).
Interaction of Porphyrins with Cetyltrimethylammonium Bromide Micelles in Methylene Chloride (J. Porphyrins Pthalocyanins, 2, 345-351, 1998).
Two dimensional surface properties of macromonomer and polymer in absence and presence of various surfactant micelles and thermodynamics studies (Langmuir, 16, 3957-3963, 2000; Chem. Phys. Lett., 318, 35-42, 2000).
Solution structure of a modified comb-like polymer from octadecyl methacrylate and acrylic acid. Incorporatoin of bromo-octadecane into saturated and unsaturated long chain ester monolayers at the air-water interface (Chem. Phys. Lett., 348, 395-402, 2001; J. Am. Oil. Chem. Soc., 78, 503-507, 2001).
Spin lattice relaxation time measurements on macromonomer, polymer, SDS and their mixed systems with different mole compositions at 90, 300 and 400 MHz field frequency dispersions: Molecular dynamics on micellar systems (Chem. Phys. Lett., 266, 443-450, 1997; J. Surface Sci. and Tech., 17, 29-48, 2001).
Self-assembling characteristics and physico-chemical properties of a hydantoin drug (Phys. Rev. Lett., 2004 submitted; Chem. Phys. 2003, 291, 195). Self-assembling characteristics of a new class of nonionic Gemini surfactant (J. Phys.Chem.B., 2004, 108, 8806-8816)
Fluorescence quenching of pyrene by various metal ligand complexes in SDS micelles: Effect of micelle size as controlled by nature of ligand environment (Bull. Chem. Soc. Jpn., 73, 1769-1775, 2000). Interaction of PEO-PPO-PEO triblock copolymer micelles with SDS micelles: Transport, thermodynamics, cyclic voltammetric and dynamic light scattering studies. (Chem. Phys. 312, 275-287, 2005; Chem. Phys. Lett. 405, 84-89, 2005).
Electron transfer studies through mixed self-assembled monolayers of thiophenols and thioctic acid (J. Electroanal. Chem. 580, 122-127, 2005,).
Physicochemical Properties of PEO-PPO-PEO Triblock Copolymer (Mol.Wt. 2000) Micelles in Sodium Dodecylsulfate Micellar Environment (J. Surface Sci, Technol., 21, 23-42, 2005).
Electrochemical rectification at electrode surface modified with poly (acrylic acid) and decane thiol. (Journal of Solid State Electrochem., 10, 499-505, 2006).
Physicochemical studies on hydrophobic PEO-PPO-PEO triblock copolymer micelles in SDS micellar environment. (J. Polym. Sci.: Polym. Phys., 45, 2410-2420, 2007).

Multidisciplinary Areas

Biomaterials and Nano Science and Technology

Perspective of polymer-peptide interaction (J. Surface Sci. and Tech., 16, 1-33, 2000). The formation of copper oxide nanorods in presence of various surfactant micelles (Indian Journal of Science and Technology, 1, 1-6, 2008)
Preparation and properties of thermoplastic IPN nanocomposites based on polyurethane ionomers (Proceedings Ind. Soc. Adv. Mat. Process Engg., 471-477, 2008).
Preparation, characterization and evaluation of a biopolymeric gold nanocomposite with antimicrobial activity (Biotechnology and Applied Biochemistry 55, (29-35) 2010).
Biocompatible and Antibacterial Properties of Silver-Doped Hydroxyapatite (J. Biomed. Nanotechnol. 4, 62-66, 2008)
Growth of hydroxyapatite on physiologically clotted fibrin capped gold nanoparticles (Nanotechnol. 19,1-5, 2008)
Gelatin–Chitosan composite capped gold nanoparticles: a matrix for the growth of hydroxyapatite (J. Nanopart. Res. 11, 333-340, 2008).
Optimization of influential parameters for extracellular keratinase production of Bacillus subtilis (MTCC9102) in solid state fermentation using horn meal - A biowaste management. (Appl. Biochem. Biotechnol. 160, 30-39, 2010).
One step synthesis of silver nanorods by autoreduction of aqueous silver ions with hydroxyapatite: An inorganic-inorganic hybrid nanocomposite. (J. Biomed. Mater. Res. 80A:391-398, 2007).

Evaluation and application of Drugs

Evaluation of Thermodynamic Parameters of Amphiphilic Tricyclic Antidepressant Drug Imipramine Hydrochloride─Additive Systems at the Cloud Point. (Colloids Surf. B: Biointerfaces, 76,577-584, 2010).
Thermodynamics at the Cloud Point of Phenothiazine Drug Chlorpromazine Hydrochloride─Additive Systems. (J. Chem. Eng. Data, DOI: 10.1021/je900748).
Thermodynamics of Some Amphiphilic Drugs in Presence of Additives. (J. Chem. Eng. Data, DOI: 10.1021/je900749a). Amphiphilic Drug Promethazine Hydrochloride ―Additive Systems: Evaluation of thermodynamic Parameters at Cloud Point (J. Chem. Eng. Data, DOI: 10.1021/je9008975).
Purification, crystallization and preliminary X-ray diffraction studies of parakeet (Psittacula krameri) haemoglobin (Acta Crystallographica Section F 65, 1027-1029, 2009).
Organization of amphiphiles Part-X: Studies on the interaction between polyoxyethylated (30) octylphenol and cetyltrimethylammonium bromide in aqueous solution (J.Colloid Interface Sci. 333,590-598, 2009).

Leather Science and Technology

Use of ultrasound in leather processing Industry: Effect of sonication on substrate and substances - New insights (Ultrasonics Sonochemistry DOI: 10.1016/j.ultsonch.2009.10.012).
Elucidation of the structure, size, molecular weight and solubilization phenomena associated with cutch (Acacia catechu) in surfactant micelles and the investigations on the cleavage of tetrameric units by the addition of Na2S2O4 into dimeric ones through a two step process. The dynamics of the cleavage processes to be discussed in terms of exo endo migration concept. (J.Surface Sci. Tech. 3, 31 38, 1987).
Modification of hide skin trimming proteins by transamidification and the low molecular weight peptide; Hydrodynamic, thermodynamic, mechanical and some physicochemical properties in comparison with casein and its application into leather. (Leather Sci. 32 (7), 155 164, 1985; J. Soc. Leather Technol. Chemists, 70, 39 45, 1986; J. Soc. Leather Technol. Chemists, 71, 142 146, 1987).
Physicochemical Studies on Micelle formation of Chromium-Aluminium synthetic tanning materials in various environments and at various temperatures and its application to leather: Mechanism of tanning in the light of Micellisation concept. (J. Soc. Leather Technolog. Chemists, 67, 147-158, 1983).
An investigation towards the production of soft leathers from Himantura Stingray skins (J. Soc. Leather Technol. Chemists, In Press); A study on the degradation of collagen, skin and leather (J. Indian Leather Technol. Assoc., In Press). Gaining new insights in cleaner and greener leather processing (Leather Age 2008). Recovery and reuse of Chromium from chrome tanning wastewater (J. Cleaner Prod.) and Possiblilities of Cr(VI) generation in Leather Products ans Plausible preventive and corrective measures (Leathers 2008).

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	Prof. Dr. Asit Baran Mandal Director

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Outstanding R&D achievements
The major and significant contributions of Dr Mandal are in the area of physical and biophysical chemistry associated with heterogeneous equilibria and multiphasic systems. Contributions have been made by Dr Mandal to both the developments of theory and experimental techniques pertinent to protein, peptide, micelles and reverse micellar systems. Significant contributions: Colloid and Surface Science Development of exact methods to investigate micelle formation of collagen and compute hydrodynamic and thermodynamic parameters. Estimation of asymmetries in collagen molecules using Simha Einstein equation. Development of a conductivity based method for estimating bound water and hydration number of collagen and micellar systems using principles of obstruction of electrolyte migration. Has successfully analysed the transport of collagen in and out of micellar environments. Analysis, geometry determination and quantitative estimation of the energy requirements of coil coil to random-coil conformation as well as successful demonstration that sodium dodecyl sulfate and Tween 80 (polyoxyethylene sorbitan monoleate) stabilize and CTAB (cetyl trimethyl ammonium bromide) and Urea destabilize the collagen structure. (European J.Biochem. 169, 617 628, 1987; Int.J.Biological Macromolecules, 18, 41-53, 1996. Demonstration that hydrodynamic volume of collagen is species specific and for cosmetic preparations shark skin collagen is the most suited on the basis of hydrodynamic volume and thermodynamic considerations. (Connective Tissue Res.; Biochem.J. 249, 127 133, 1988). Development of a cylic voltammetric based technique for the determination of critical micelle concentration and molecular weight of the surfactant using the peak current ip and half wave potential E1/2 (Langmuir, 4, 736 740, 1988; Bull.Electrochem. 4, 565 569, 1988). Proposal of a mechanism for the transition from hydrated micelles to liquid crystalline phase through reverse and swollen micelles. (Colloid & Polym. Sci. 266, 575 578, 1988). Development of electrochemical probe to estimate partition coefficients and the characterization of ternary systems with regard to the location of EC probe in polar and non polar regions of the microemulsions. (Langmuir, 4, 736 750, 1988; Colloid & Polym.Sci. 266, 575 578, 1988; J.Chem.Soc.Faraday Trans.87, 133 136, 1991). Development of electroanalytical techniques for the measurements of interaction parameters, heterogeneous electron transfer rate constants and self diffusion coefficient of various micelles by using suitable EC probes and the molecular dynamics studies on micellar systems by using NMR spin lattice relaxation time measurements. (J.Phys.Chem. 95, 9008 9013, 1991); Butterworth scientific publications, London, Ch.2, pp.136 149, 1991, Langmuir, 9, 1932 1933, 1993; Langmuir, 11, 1464-1467,1995; Langmuir, 13, 2410-2414, 1997(April)). The derivation of a new Huggins Thomas Mandal equation and the proof that Thomas constant, K1 should be 12.50 for perfectly spherical shape particles as against the 10.05 suggested earlier (JAOCS, 64, 1202 1207, 1987; Colloid & Polym.Sci. 260, 702 707, 1982). The experimental demonstration of a method to determine the lengths of semi major and semi minor axes and the correlation times of micelles derived from nonionic surfactants like Triton X 100, Tween 80, Macromonomer and Tween 20. This work helped to resolve the controversies in the shape of micelles (spherical or ellipsoid) associated with non ionic surfactants. (J.Phys.Chem. 84, 856 859, 1980; Ind.J.Chem.24A. 670 674, 1985; J.Chem.Phys. 105, 9649-9656, 1996). New methods to draw pseudo ternary phase diagram for systems involving as many as 5 components and to estimate activity coefficients, thermodynamic parameters and solubilization in complex systems. The effect of alcohols on the stability of mixed surfactant systems and the concept of Bluish Coacervate phase. (ACS Proceedings in : Solution behaviour of surfactants Theoretical and Applied Aspects, K.L.Mittal and E.J.Fendler, Eds. Plenum Press, New York, vol.1, pp.521 541, 1982; 63rd ACS symposium on Surfaces and Colloids, Univ. of Washington, Seattle, 1989). Development of a technique based on 1H NMR and 13C NMR spin lattice relaxation time (T1) to probe the micellar environments of negatively and positively charged surfactants. Determination of cmc and self diffusion coefficient of polymeric surfactants using CV and Fourier Transform Pulsed Gradient Spin Echo NMR techniques (Langmuir, 11, 1464-1467, 1995). Solubilization of various carcinogenic materials in ionic micelles and molecular dynamics (J.Colloid Interface Sci., 161, 292 298, 1993; Chem.Phys.Letts. 266, 443-450, 1997) New Micelle forming Peptide, Hydrogen Bonding, Aggregation, Conformations, Solubilization of Peptide in the various micelles in aqueous and nonaqueous solvents and their molecular dynamics and thermodynamic studies. (J.Chem.Soc. Chem.Communications, 237 238, 1993; J.Chem.Soc.Chem. Communications, 853 855, 1993; J.Chem. Soc., Faraday Trans. 89, 3075 3079, 1993; Faraday Trans. 90, 161-165, 1994; Faraday Trans. 90, 2725-2730, 1994 J.Phys.Chem, 2010 (submitted); PCCP., 2010(submitted). Synthesis, characterization, micelle formation, geometry, self diffusion, Molecular dynamics and Thermodynamics in Aqueous solution of Methoxy polyethylene glycol macromonomer, homopolymer and graft copolymer [Macromolecules, 26, 4083 4088, 1993; Colloids & Surfaces, 1996; J.Chem.Soc., Chem.Comm., 1997. J.Chem.Phys.105, 9649-9656, 1996, Langmuir, 11, 1464-1467, 1995; Langmuir,13, 2410-2414,1997(April); Chem.Phys.Letts.,266, 443-450, 1997; (Langmuir, 16, 3957-3963, 2000) Interaction of Macromonomer with ionic surfactants in absence and presence of stearic acid matrix: Spectroscopy, Monolayer and Thermodynamic studies (Langmuir, 16, 3957-3963, 2000; Chem. Phys. Lett., 318, 35-42, 2000). Micelle Formation of Triton X in Chloroform and its interaction with tripeptide (Boc-Val-Val-Ile) Micelles: Cyclic Voltammetry, Dynamic Light Scattering, UV-vis, Fluorescence, FTIR, NMR spectroscopy, TEM and Monolayer Techniques and Thermodynamic Studies (Submitted to J.Phys.Chem.B. 2010). The role of various Metal-Ligand Complexes as structure breaker and maker for different surfactant Micelles (Bull. Chem. Soc. Jpn., 73, 1769-1775, 2000). Primary and Secondary Micelle Formation of Macromonomer and its relevance to Polymerization. Comparative studies of Molecular dynamics between Macromonomer and Polymer (Submitted to Macromolecules, 2010). The Behavior of Gold Electrode as a Microarray Electrode By the Oxidation of Thiol monolayer Using An Electrochemical Treatment (Submitted to J.Phys.Chem.) The Effect of Various Toxicants on the Membrane of Paddy Seedlings: Electroanalytical and Kinetic Studies (Bioelectromagnetics and Biomedicine, 5, 37-46, 1996). The shape, size, aggregation, hydration, flow behaviors, correlation times, interaction parameters, self-diffusion, electrochemical and thermodynamic studies on ionic and nonionic mixed micellar systems (J.Phys.Chem., 2010 (submitted); Chem.Phys.Letts., 2010 (submitted); Langmuir, 2010 (submitted). The interaction of Triton X nonionic surfactants with a DPPC Phospholipid in LB Films at Air/Water interface using monolayer studies Langmuir, 2010 (submitted). Interaction of Porphyrins with Cetyltrimethylammonium Bromide Micelles in Methylene Chloride (J. Porphyrins Pthalocyanins, 2, 345-351, 1998). Two dimensional surface properties of macromonomer and polymer in absence and presence of various surfactant micelles and thermodynamics studies (Langmuir, 16, 3957-3963, 2000; Chem. Phys. Lett., 318, 35-42, 2000). Solution structure of a modified comb-like polymer from octadecyl methacrylate and acrylic acid. Incorporatoin of bromo-octadecane into saturated and unsaturated long chain ester monolayers at the air-water interface (Chem. Phys. Lett., 348, 395-402, 2001; J. Am. Oil. Chem. Soc., 78, 503-507, 2001). Spin lattice relaxation time measurements on macromonomer, polymer, SDS and their mixed systems with different mole compositions at 90, 300 and 400 MHz field frequency dispersions: Molecular dynamics on micellar systems (Chem. Phys. Lett., 266, 443-450, 1997; J. Surface Sci. and Tech., 17, 29-48, 2001). Self-assembling characteristics and physico-chemical properties of a hydantoin drug (Phys. Rev. Lett., 2004 submitted; Chem. Phys. 2003, 291, 195). Self-assembling characteristics of a new class of nonionic Gemini surfactant (J. Phys.Chem.B., 2004, 108, 8806-8816) Fluorescence quenching of pyrene by various metal ligand complexes in SDS micelles: Effect of micelle size as controlled by nature of ligand environment (Bull. Chem. Soc. Jpn., 73, 1769-1775, 2000). Interaction of PEO-PPO-PEO triblock copolymer micelles with SDS micelles: Transport, thermodynamics, cyclic voltammetric and dynamic light scattering studies. (Chem. Phys. 312, 275-287, 2005; Chem. Phys. Lett. 405, 84-89, 2005). Electron transfer studies through mixed self-assembled monolayers of thiophenols and thioctic acid (J. Electroanal. Chem. 580, 122-127, 2005,). Physicochemical Properties of PEO-PPO-PEO Triblock Copolymer (Mol.Wt. 2000) Micelles in Sodium Dodecylsulfate Micellar Environment (J. Surface Sci, Technol., 21, 23-42, 2005). Electrochemical rectification at electrode surface modified with poly (acrylic acid) and decane thiol. (Journal of Solid State Electrochem., 10, 499-505, 2006). Physicochemical studies on hydrophobic PEO-PPO-PEO triblock copolymer micelles in SDS micellar environment. (J. Polym. Sci.: Polym. Phys., 45, 2410-2420, 2007). Multidisciplinary Areas Biomaterials and Nano Science and Technology Perspective of polymer-peptide interaction (J. Surface Sci. and Tech., 16, 1-33, 2000). The formation of copper oxide nanorods in presence of various surfactant micelles (Indian Journal of Science and Technology, 1, 1-6, 2008) Preparation and properties of thermoplastic IPN nanocomposites based on polyurethane ionomers (Proceedings Ind. Soc. Adv. Mat. Process Engg., 471-477, 2008). Preparation, characterization and evaluation of a biopolymeric gold nanocomposite with antimicrobial activity (Biotechnology and Applied Biochemistry 55, (29-35) 2010). Biocompatible and Antibacterial Properties of Silver-Doped Hydroxyapatite (J. Biomed. Nanotechnol. 4, 62-66, 2008) Growth of hydroxyapatite on physiologically clotted fibrin capped gold nanoparticles (Nanotechnol. 19,1-5, 2008) Gelatin–Chitosan composite capped gold nanoparticles: a matrix for the growth of hydroxyapatite (J. Nanopart. Res. 11, 333-340, 2008). Optimization of influential parameters for extracellular keratinase production of Bacillus subtilis (MTCC9102) in solid state fermentation using horn meal - A biowaste management. (Appl. Biochem. Biotechnol. 160, 30-39, 2010). One step synthesis of silver nanorods by autoreduction of aqueous silver ions with hydroxyapatite: An inorganic-inorganic hybrid nanocomposite. (J. Biomed. Mater. Res. 80A:391-398, 2007). Evaluation and application of Drugs Evaluation of Thermodynamic Parameters of Amphiphilic Tricyclic Antidepressant Drug Imipramine Hydrochloride─Additive Systems at the Cloud Point. (Colloids Surf. B: Biointerfaces, 76,577-584, 2010). Thermodynamics at the Cloud Point of Phenothiazine Drug Chlorpromazine Hydrochloride─Additive Systems. (J. Chem. Eng. Data, DOI: 10.1021/je900748). Thermodynamics of Some Amphiphilic Drugs in Presence of Additives. (J. Chem. Eng. Data, DOI: 10.1021/je900749a). Amphiphilic Drug Promethazine Hydrochloride ―Additive Systems: Evaluation of thermodynamic Parameters at Cloud Point (J. Chem. Eng. Data, DOI: 10.1021/je9008975). Purification, crystallization and preliminary X-ray diffraction studies of parakeet (Psittacula krameri) haemoglobin (Acta Crystallographica Section F 65, 1027-1029, 2009). Organization of amphiphiles Part-X: Studies on the interaction between polyoxyethylated (30) octylphenol and cetyltrimethylammonium bromide in aqueous solution (J.Colloid Interface Sci. 333,590-598, 2009). Leather Science and Technology Use of ultrasound in leather processing Industry: Effect of sonication on substrate and substances - New insights (Ultrasonics Sonochemistry DOI: 10.1016/j.ultsonch.2009.10.012). Elucidation of the structure, size, molecular weight and solubilization phenomena associated with cutch (Acacia catechu) in surfactant micelles and the investigations on the cleavage of tetrameric units by the addition of Na2S2O4 into dimeric ones through a two step process. The dynamics of the cleavage processes to be discussed in terms of exo endo migration concept. (J.Surface Sci. Tech. 3, 31 38, 1987). Modification of hide skin trimming proteins by transamidification and the low molecular weight peptide; Hydrodynamic, thermodynamic, mechanical and some physicochemical properties in comparison with casein and its application into leather. (Leather Sci. 32 (7), 155 164, 1985; J. Soc. Leather Technol. Chemists, 70, 39 45, 1986; J. Soc. Leather Technol. Chemists, 71, 142 146, 1987). Physicochemical Studies on Micelle formation of Chromium-Aluminium synthetic tanning materials in various environments and at various temperatures and its application to leather: Mechanism of tanning in the light of Micellisation concept. (J. Soc. Leather Technolog. Chemists, 67, 147-158, 1983). An investigation towards the production of soft leathers from Himantura Stingray skins (J. Soc. Leather Technol. Chemists, In Press); A study on the degradation of collagen, skin and leather (J. Indian Leather Technol. Assoc., In Press). Gaining new insights in cleaner and greener leather processing (Leather Age 2008). Recovery and reuse of Chromium from chrome tanning wastewater (J. Cleaner Prod.) and Possiblilities of Cr(VI) generation in Leather Products ans Plausible preventive and corrective measures (Leathers 2008).

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