Interaction of a green ester-bonded gemini surfactant with xanthine oxidase: Biophysical perspective

Akram, Mohd.; Bhat, Imtiyaz Ahmad; Kabir-ud-Din, †

doi:10.1016/j.ijbiomac.2015.03.050

Cited by 25 publications

(2 citation statements)

References 57 publications

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“…The standard Gibbs free energy change in the micellization and adsorption of geminis can be obtained by applying Eqs. ) and () (Akram et al, 2015a, b; Fatma et al, 2015).

normalΔ G_{mic}^{o} = RT \ln X_{CMC}

normalΔ G_{ads}^{o} = normalΔ G_{mic}^{o} - \frac{Π_{CMC}}{Γ_{\max}}

where X CMC and Π CMC denote the CMC in molar fraction and the surface pressure, respectively.…”

Section: Resultsmentioning

confidence: 99%

An Insight View on Synthetic Protocol, Surface Activity, and Biological Aspects of Novel Biocompatible Quaternary Ammonium Cationic Gemini Surfactants

Akram

Lal

Osama

et al. 2020

J Surfact & Detergents

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In this study, we prepared a novel series of diester-functionalized cationic gemini surfactants (C m-E2O2-C m) containing ethylene oxide as a spacer with varying alkyl chain lengths and characterized by 1 H NMR, FT-IR, elemental analysis, and ESI-MS. The physicochemical properties of the geminis were explored by tensiometry, fluorescence, dye solubilization, and Krafft point. These geminis acquire superior surface activity than the conventional surfactants. Fluorescence spectroscopy analysis affirmed that the micropolarity and aggregation number of micelles diminished with increase in the alkyl chain length. These geminis represent a new group of amphiphiles of considerably high biodegradability, better cleavability, and low toxicity as assessed by BOD test, FT-IR analysis, and HC 50 analysis, respectively. They also showed significant level of antimicrobial activity toward some specified bacterial strains of Gram-positive and Gram-negative by using agar well diffusion method. Furthermore, the thermogravimetric analysis provided information regarding thermal stabilities of the newly synthesized gemini surfactants. Keywords C m-E2O2-C m gemini surfactants Á Physicochemical properties Á Antimicrobial activities Á TGA

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“…The standard Gibbs free energy change in the micellization and adsorption of geminis can be obtained by applying Eqs. ) and () (Akram et al, 2015a, b; Fatma et al, 2015).

normalΔ G_{mic}^{o} = RT \ln X_{CMC}

normalΔ G_{ads}^{o} = normalΔ G_{mic}^{o} - \frac{Π_{CMC}}{Γ_{\max}}

where X CMC and Π CMC denote the CMC in molar fraction and the surface pressure, respectively.…”

Section: Resultsmentioning

confidence: 99%

An Insight View on Synthetic Protocol, Surface Activity, and Biological Aspects of Novel Biocompatible Quaternary Ammonium Cationic Gemini Surfactants

Akram

Lal

Osama

et al. 2020

J Surfact & Detergents

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“…The Gibbs standard free energies of micellization (

{Δ G}_{m}^{0}

) and adsorption (

{Δ G}_{ad}^{0}

) (Table 2) were also calculated from surface parameters by using the corresponding Eqs ) and () (Akram et al, 2015; Fatma et al, 2015).

{Δ G}_{m}^{0} = RT \ln X_{cmc}

{Δ G}_{ad}^{0} = {Δ G}_{m}^{0} - \frac{Π_{italiccmc}}{Γ_{italicmax}}

…”

Section: Resultsmentioning

confidence: 99%

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Shaheen

Mir

Arif

et al. 2020

J Surfact & Detergents

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The micellar, surface, and aggregation properties of biocompatible, imidazolium-based hydroxyl group-Br 2 , were studied. The surface parameters like maximum surface excess concentration at air/water interface (Γ max ), the minimum surface area occupied by surfactant molecules (A min ) and the related thermodynamic parameters such as, standard Gibbs free energy of micellization (ΔG 0 m ), standard free energy of adsorption (ΔG 0 ad ), and free energy of surface at equilibrium ðG s min ) were also determined from the surface parameters. The aggregation behavior has been elucidated from transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques which showed that these gemini surfactants have potential self-aggregation efficiency. Besides, some other physicochemical properties like foam stability, emulsifying power, and viscosity have been determined. The structural features of [C n Im-3OH-ImC n ]Br 2 enhance their surface-active properties. These features of gemini surfactants are of primary significance from pharmaceutical and biomedical viewpoints. The gemini surfactants may have great implications in drug formulations and delivery owing to their prominent aggregation and non-cytotoxic nature.

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Supramolecular strategy of the encapsulation of low-molecular-weight food ingredients

et al. 2016

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Interaction of a green ester-bonded gemini surfactant with xanthine oxidase: Biophysical perspective

Cited by 25 publications

References 57 publications

An Insight View on Synthetic Protocol, Surface Activity, and Biological Aspects of Novel Biocompatible Quaternary Ammonium Cationic Gemini Surfactants

An Insight View on Synthetic Protocol, Surface Activity, and Biological Aspects of Novel Biocompatible Quaternary Ammonium Cationic Gemini Surfactants

Surface, Micellar, and Aggregation Behavior of Non‐cytotoxic Imidazolium Gemini Surfactants

Supramolecular strategy of the encapsulation of low-molecular-weight food ingredients

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