Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine
Viscosity, speed of sound (<i>u</i>), and density (<i>ρ</i>) have been measured in aqueous glycyl glycine solution over a temperature range from 293.15 to 313.15 K with a 5 K interlude to evaluate the volumetric and compressibility properties of bio-surfactants, namely sodium...
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MDPI AG
2022-12-01
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| coleção: | Molecules |
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| Acesso em linha: | https://www.mdpi.com/1420-3049/27/24/8998 |
| _version_ | 1827637550276149248 |
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| author | Santosh Kumari Suvarcha Chauhan Kuldeep Singh Ahmad Umar Hassan Fouad Mohammed S. Alissawi Mohammad Shaheer Akhtar |
| author_facet | Santosh Kumari Suvarcha Chauhan Kuldeep Singh Ahmad Umar Hassan Fouad Mohammed S. Alissawi Mohammad Shaheer Akhtar |
| author_sort | Santosh Kumari |
| collection | DOAJ |
| description | Viscosity, speed of sound (<i>u</i>), and density (<i>ρ</i>) have been measured in aqueous glycyl glycine solution over a temperature range from 293.15 to 313.15 K with a 5 K interlude to evaluate the volumetric and compressibility properties of bio-surfactants, namely sodium cholate (NaC; 1–20 mmol∙kg<sup>−1</sup>) and sodium deoxycholate (NaDC; 1–10 mmol∙kg<sup>−1</sup>). Density and viscosity findings provide information on both solute–solute and solute–solvent types of interactions. Many other metrics, such as apparent molar adiabatic compression <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>κ</mi><mrow><mi>S</mi><mo>,</mo><mi>φ</mi></mrow></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, isentropic compressibility <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>κ</mi><mi>S</mi></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, and apparent molar volume <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>V</mi><mi>φ</mi></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, have been calculated from speed of sound and density measurements, utilising experimental data. The results show that the zwitterionic end group in the glycyl glycine strongly interacts with NaDC and NaC, promoting its micellization. Since the addition of glycyl glycine causes the bio-surfactant molecules to lose their hydrophobic hydration, the observed concentration-dependent changes in apparent molar volume and apparent molar adiabatic compression are likely attributable to changes in water–water interactions. Viscous relaxation time (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>τ</mi></semantics></math></inline-formula>) increases significantly with a rise in bio-surfactant concentration and decreases with increasing temperature, which may be because of structural relaxation processes resulting from molecular rearrangement. All of the estimated parameters have been analysed for their trends with regard to the different patterns of intermolecular interaction present in an aqueous glycyl glycine solution and bio-surfactant system. |
| first_indexed | 2024-03-09T16:02:32Z |
| format | Article |
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| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T16:02:32Z |
| publishDate | 2022-12-01 |
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| spelling | doaj.art-b1e79d91b599456dadd0ad502889d2742023-11-24T17:01:04ZengMDPI AGMolecules1420-30492022-12-012724899810.3390/molecules27248998Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl GlycineSantosh Kumari0Suvarcha Chauhan1Kuldeep Singh2Ahmad Umar3Hassan Fouad4Mohammed S. Alissawi5Mohammad Shaheer Akhtar6Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, IndiaDepartment of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, IndiaDepartment of Chemistry, MCM DAV College, Kangra 176001, IndiaDepartment of Chemistry, College of Science and Arts, and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi ArabiaApplied Medical Science Department, Community College, King Saud University, Riyadh 11433, Saudi ArabiaCollege of Engineering, King Saud University, Riyadh 11433, Saudi ArabiaSchool of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of KoreaViscosity, speed of sound (<i>u</i>), and density (<i>ρ</i>) have been measured in aqueous glycyl glycine solution over a temperature range from 293.15 to 313.15 K with a 5 K interlude to evaluate the volumetric and compressibility properties of bio-surfactants, namely sodium cholate (NaC; 1–20 mmol∙kg<sup>−1</sup>) and sodium deoxycholate (NaDC; 1–10 mmol∙kg<sup>−1</sup>). Density and viscosity findings provide information on both solute–solute and solute–solvent types of interactions. Many other metrics, such as apparent molar adiabatic compression <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>κ</mi><mrow><mi>S</mi><mo>,</mo><mi>φ</mi></mrow></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, isentropic compressibility <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>κ</mi><mi>S</mi></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, and apparent molar volume <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo stretchy="false">(</mo><msub><mi>V</mi><mi>φ</mi></msub><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula>, have been calculated from speed of sound and density measurements, utilising experimental data. The results show that the zwitterionic end group in the glycyl glycine strongly interacts with NaDC and NaC, promoting its micellization. Since the addition of glycyl glycine causes the bio-surfactant molecules to lose their hydrophobic hydration, the observed concentration-dependent changes in apparent molar volume and apparent molar adiabatic compression are likely attributable to changes in water–water interactions. Viscous relaxation time (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>τ</mi></semantics></math></inline-formula>) increases significantly with a rise in bio-surfactant concentration and decreases with increasing temperature, which may be because of structural relaxation processes resulting from molecular rearrangement. All of the estimated parameters have been analysed for their trends with regard to the different patterns of intermolecular interaction present in an aqueous glycyl glycine solution and bio-surfactant system.https://www.mdpi.com/1420-3049/27/24/8998intermolecular interactionsglycyl glycinebio-surfactantsapparent molar volumeisentropic compressibilityapparent molar adiabatic compression |
| spellingShingle | Santosh Kumari Suvarcha Chauhan Kuldeep Singh Ahmad Umar Hassan Fouad Mohammed S. Alissawi Mohammad Shaheer Akhtar Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine Molecules intermolecular interactions glycyl glycine bio-surfactants apparent molar volume isentropic compressibility apparent molar adiabatic compression |
| title | Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine |
| title_full | Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine |
| title_fullStr | Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine |
| title_full_unstemmed | Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine |
| title_short | Volumetric, Compressibility and Viscometric Approach to Study the Interactional Behaviour of Sodium Cholate and Sodium Deoxycholate in Aqueous Glycyl Glycine |
| title_sort | volumetric compressibility and viscometric approach to study the interactional behaviour of sodium cholate and sodium deoxycholate in aqueous glycyl glycine |
| topic | intermolecular interactions glycyl glycine bio-surfactants apparent molar volume isentropic compressibility apparent molar adiabatic compression |
| url | https://www.mdpi.com/1420-3049/27/24/8998 |
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