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Mitra A, Chattaraj KG, Paul S. Elucidating the Hydrotropic Mechanism of the Antagonistic Salt PPh 4Cl. J Phys Chem B 2023; 127:996-1012. [PMID: 36653942 DOI: 10.1021/acs.jpcb.2c07892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
PPh4Cl is an antagonistic salt that recently showed promise as a hydrotropic agent. Here, we give mechanistic insights into the PPh4Cl-assisted solubility of a dye molecule using molecular dynamics simulations. Our findings reveal that dye molecules aggregate into a cluster which leads to an accumulation of PPh4+ ions in its vicinity and subsequent exclusion of water molecules from the region. The structural organization is attributed to the preferential interaction of dye molecules and PPh4Cl. The origin of such preference arises from the difference in π-π and CH-π interaction among the pairs. The hydrodynamic radius of PPh4Cl indicates a low propensity for cluster formation, which enhances its hydrotropic behavior. The process of dye dissolution is thermodynamically favored and occurs through a cooperative mechanism. Our studies provide molecular insight into experimental observations crucial for the design of novel hydrotropes with enhanced solubilizing properties.
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Affiliation(s)
- Aritra Mitra
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam781039, India
| | | | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam781039, India
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2
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Patel AD, Desai MA. Progress in the field of hydrotropy: mechanism, applications and green concepts. REV CHEM ENG 2022. [DOI: 10.1515/revce-2021-0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Sustainability and greenness are the concepts of growing interest in the area of research as well as industries. One of the frequently encountered challenges faced in research and industrial fields is the solubility of the hydrophobic compound. Conventionally organic solvents are used in various applications; however, their contribution to environmental pollution, the huge energy requirement for separation and higher consumption lead to unsustainable practice. We require solvents that curtail the usage of hazardous material, increase the competency of mass and energy and embrace the concept of recyclability or renewability. Hydrotropy is one of the approaches for fulfilling these requirements. The phenomenon of solubilizing hydrophobic compound using hydrotrope is termed hydrotropy. Researchers of various fields are attracted to hydrotropy due to its unique physicochemical properties. In this review article, fundamentals about hydrotropes and various mechanisms involved in hydrotropy have been discussed. Hydrotropes are widely used in separation, heterogeneous chemical reactions, natural product extraction and pharmaceuticals. Applications of hydrotropes in these fields are discussed at length. We have examined the significant outcomes and correlated them with green engineering and green chemistry principles, which could give an overall picture of hydrotropy as a green and sustainable approach for the above applications.
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Affiliation(s)
- Akash D. Patel
- Department of Chemical Engineering , Sardar Vallabhbhai National Institute of Technology , Surat 395007 , Gujarat , India
| | - Meghal A. Desai
- Department of Chemical Engineering , Sardar Vallabhbhai National Institute of Technology , Surat 395007 , Gujarat , India
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Paul R, Chattaraj KG, Paul S. Role of Hydrotropes in Sparingly Soluble Drug Solubilization: Insight from a Molecular Dynamics Simulation and Experimental Perspectives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:4745-4762. [PMID: 33853331 DOI: 10.1021/acs.langmuir.1c00169] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Drug molecules' therapeutic efficacy depends on their bioavailability and solubility. But more than 70% of the formulated drug molecules show limited effectiveness due to low water solubility. Thus, the water solubility enhancement technique of drug molecules becomes the need of time. One such way is hydrotropy. The solubilizing agent of a hydrophobic molecule is generally referred to as a hydrotrope, and this phenomenon is termed hydrotropy. This method has high industrial demand, as hydrotropes are noninflammable, readily available, environmentally friendly, quickly recovered, cost-effective, and not involved in solid emulsification. The endless importance of hydrotropes in industry (especially in the pharmaceutical industry) motivated us to prepare a feature article with a clear introduction, detailed mechanistic insights into the hydrotropic solubilization of drug molecules, applications in pharma industries, and some future directions of this technique. Thus, we believe that this feature article will become an adequate manual for the pharmaceutical researchers who want to explore all of the past perspectives of the hydrotropic action of hydrotropes in pharmaceutics.
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Affiliation(s)
- Rabindranath Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
| | | | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
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Enhanced catalytic activity of bio-fabricated ZnO NPs prepared by ultrasound-assisted route for the synthesis of tetraketone and benzylidenemalonitrile in hydrotropic aqueous medium. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04233-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Patel AD, Desai MA. Aggregation Behavior and Thermodynamic Studies of Hydrotropes: A Review. TENSIDE SURFACT DET 2020. [DOI: 10.3139/113.110686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Abstract
Under the aspect of strict environmental regulations, hydrotropy is accepted as an environmentally friendly (“green”) approach to solubilise hydrophobic compounds. Above the minimum hydrotrope concentration (MHC), hydrotropes are capable of self-aggregation; the MHC is considered the minimum requirement for solubilisation. In this article a comprehensive overview of the aggregation behaviour of different hydrotropes is presented. Details about the methods used for aggregation are given. The role of additives is discussed with respect to their influence on the MHC. Thermodynamic studies are used to evaluate the stability of a hydrotrope at different temperatures. A modern approach to the solubilization mechanism using hydrotropes is also presented in this review article. The aim of this article is to provide guidance for conducting such studies on a number of hydrotropes.
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Das T, Mehta CH, Nayak UY. Multiple approaches for achieving drug solubility: an in silico perspective. Drug Discov Today 2020; 25:1206-1212. [PMID: 32353425 DOI: 10.1016/j.drudis.2020.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/12/2020] [Accepted: 04/21/2020] [Indexed: 12/11/2022]
Abstract
Discovering new therapeutically active molecules is the ultimate destination in pharmaceutical research and development. Most drugs discovered are lipophilic and, hence, exhibit poor aqueous solubility, resulting in low bioavailability. Thus, there is a need to use various solubility enhancement techniques. Computational approaches enable the analysis of drug-carrier interactions or the numerous conformational changes in the carrier matrix that might establish an appropriate balance between cohesive and adhesive stability in a formulation. In this review, we discuss research approaches that provided molecular insight into drugs and their modifiers to unravel their solubility, stability, and bioavailability.
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Affiliation(s)
- Torsa Das
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Chetan H Mehta
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Usha Y Nayak
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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Patil MR, Ganorkar SB, Patil AS, Shirkhedkar AA, Surana SJ. Hydrotropic Solubilization in Pharmaceutical Analysis: Origin, Evolution, Cumulative Trend and Precise Applications. Crit Rev Anal Chem 2020; 51:278-288. [DOI: 10.1080/10408347.2020.1718484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Mangesh R. Patil
- Central Instruments Facility (CIF), Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | - Saurabh B. Ganorkar
- Central Instruments Facility (CIF), Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | - Amod S. Patil
- Central Instruments Facility (CIF), Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | - Atul A. Shirkhedkar
- Central Instruments Facility (CIF), Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
| | - Sanjay J. Surana
- Central Instruments Facility (CIF), Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, India
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Chattaraj KG, Paul S. Inclusion of Theobromine Modifies Uric Acid Aggregation with Possible Changes in Melamine–Uric Acid Clusters Responsible for Kidney Stones. J Phys Chem B 2019; 123:10483-10504. [DOI: 10.1021/acs.jpcb.9b08487] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam, India-781039
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Chattaraj KG, Paul S. Underlying mechanistic insights into the structural properties of melamine and uric acid complexes with compositional variation under ambient conditions. J Chem Phys 2019. [DOI: 10.1063/1.5094220] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
| | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
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Shinde B, Kamble SB, Pore DM, Gosavi P, Gaikwad A, Jadhav HS, Karale BK, Burungale AS. pH‐Transformed ZnO‐NPs /NaPTS: The First Room‐Temperature Brisk Synthesis of Flavanones in Aqueous Medium. ChemistrySelect 2018. [DOI: 10.1002/slct.201802189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Bipin Shinde
- Department of ChemistryYashavantrao Chavan Institute of Science, Satara Maharashtra 415001 India
| | - Santosh B. Kamble
- Department of ChemistryYashavantrao Chavan Institute of Science, Satara Maharashtra 415001 India
| | - Dattaprasad M. Pore
- Department of ChemistryShivaji University, Kolhapur Maharashtra 416004 India
| | - Prasad Gosavi
- Department of ChemistryYashavantrao Chavan Institute of Science, Satara Maharashtra 415001 India
| | - Amol Gaikwad
- Department of ChemistryYashavantrao Chavan Institute of Science, Satara Maharashtra 415001 India
| | - Harsharaj S. Jadhav
- Department of Energy Science and TechnologyMyongji University Yongin-si Gyeonggi-Do 449–728 Republic of Korea
| | | | - Arvind S. Burungale
- Department of ChemistryYashavantrao Chavan Institute of Science, Satara Maharashtra 415001 India
- Department of ChemistryS.M. Joshi College, Hadpsar, Pune Maharashtra 411028 India
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Paul R, Paul S. Synergistic host–guest hydrophobic and hydrogen bonding interactions in the complexation between endo-functionalized molecular tube and strongly hydrophilic guest molecules in aqueous solution. Phys Chem Chem Phys 2018; 20:16540-16550. [DOI: 10.1039/c8cp01502c] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Molecular dynamics simulation study of the recognition of hydrophilic molecules by an endo-functionalized molecular tube in aqueous solution.
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Affiliation(s)
| | - Sandip Paul
- Department of Chemistry
- Indian Institute of Technology
- Guwahati
- India
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12
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Li X, Ji N, Li M, Zhang S, Xiong L, Sun Q. Morphology and Structural Properties of Novel Short Linear Glucan/Protein Hybrid Nanoparticles and Their Influence on the Rheological Properties of Starch Gel. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7955-7965. [PMID: 28837776 DOI: 10.1021/acs.jafc.7b02800] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Starch nanoparticles were potential texture modifiers. However, they have strong tendency to aggregate and poor water dispersibility, which limited their application. The interaction between glucan (prepared from starch by enzymatic modification) and protein could significantly improve the dispersity of starch nanoparticles and, thus, enhance the rheological properties of food gels. In this work, glucan/protein hybrid nanoparticles were successfully developed for the first time using short linear glucan (SLG) and edible proteins [soy protein isolate (SPI), rice protein (RP), and whey protein isolate (WPI)]. The results showed that the SLG/SPI hybrid nanoparticles exhibited hollow structures, of which the smallest size was approximately 10-20 nm when the SLG/SPI ratio was 10:5. In contrast, SLG/RP nanoparticles displayed flower-like superstructures, and SLG/WPI nanoparticles presented stacked lamellar nanostructures with a width of 5-10 nm and a length of 50-70 nm. In comparison to bare SLG nanoparticles, SLG/SPI and SLG/WPI hybrid nanoparticles had higher melting temperatures. The addition of all nanoparticles greatly increased the storage modulus of corn starch gels and decreased loss tangent values. Importantly, the G' value of starch gels increased by 567% with the addition of flower-like SLG/RP superstructures.
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Affiliation(s)
- Xiaojing Li
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
| | - Na Ji
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
| | - Man Li
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
| | - Shuangling Zhang
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
| | - Liu Xiong
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
| | - Qingjie Sun
- College of Food Science and Engineering, Qingdao Agricultural University , Qingdao, Shandong 266109, People's Republic of China
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