Synthesis and vesicle formation of cationic surfactants based on trisubstituted perfluoroalkylated thiourea

Langmuir ◽  
1993 ◽  
Vol 9 (5) ◽  
pp. 1201-1205 ◽  
Author(s):  
H. Trabelsi ◽  
S. Szonyi ◽  
M. Gaysinski ◽  
A. Cambon ◽  
H. J. Watzke
Keyword(s):  
Cationic Surfactants ◽  
Vesicle Formation

Spontaneous Vesicle Formation of Mixtures of Double-Chain Cationic Surfactants with a Different Counterion

2008 ◽  
Vol 112 (39) ◽  
pp. 12304-12311 ◽  
Author(s):  
Makoto Aratono ◽  
Azusa Mori ◽  
Ikuyo Koga ◽  
Makiko Shigehisa ◽  
Nami Onimaru ◽  
...  
Keyword(s):  
Cationic Surfactants ◽  
Vesicle Formation ◽  
Double Chain

Experimental and Computational Study of Ecofriendly Synthesize d Imine Cationic Surfactants as Corrosion Inhibitors for Carbon Steel in 1 M HCl

2020 ◽  
Vol 57 (1) ◽  
pp. 45-56 ◽  
Author(s):  
Eman A. Ghiaty ◽  
Dalia E. Mohamed ◽  
Emad A. Badr ◽  
Elshafie A. M. Gad ◽  
Elsayed A. Soliman ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Cationic Surfactants ◽  
Corrosion Inhibitors ◽  
Computational Study

Micellization Behaviour of Cationic Surfactants in the Presence of Food Additives: Conductance and Spectroscopic Investigations

2020 ◽  
Vol 10 ◽  
Author(s):  
Sonika Arti ◽  
Neha Aggarwal
Keyword(s):  
Glutamic Acid ◽  
Cationic Surfactants ◽  
Hydrophobic Interactions ◽  
Food Additives ◽  
Specific Conductance ◽  
Food Additive ◽  
Nmr Studies ◽  
Degree Of Ionization ◽  
Increase With Increase ◽  
Micellization Process

Aim: The micellization behavior of cationic surfactants have 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 (ΔGom), enthalpy (ΔHom), and entropy (ΔSom) 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 increase with increase in concentration of food additive. In all the cases, enthalpy of micellization, ∆Hom values are found to be negative whereas entropy of micellization, ∆S om values are positive which indicate that hydrophobic interactions play a major role in the micellization process. Also, NMR studies reveal that tartrate and citrate are more hydrated than glutamic acid and propionate, resulting in more downfield shift.

Intracellular trafficking and cytoplasmic streaming under abiotic stress conditions

2019 ◽  
Vol 6 (04) ◽  
Author(s):  
JESHIMA KHAN YASIN ◽  
ANIL KUMAR SINGH
Keyword(s):  
Plasma Membrane ◽  
Abiotic Stress ◽  
Confocal Microscopy ◽  
Fusion Protein ◽  
Intracellular Trafficking ◽  
Cytoplasmic Streaming ◽  
Living Cells ◽  
Stress Conditions ◽  
Vesicle Formation ◽  
External Stimuli

Cytoplasmic streaming is one among the vital activities of the living cells. In plants cytolplasmic streaming could clearly be seen in hypocotyls of growing seedlings. To observe cytoplsmic streaming and its correlated intracellular trafficking an investigation was conducted in legumes in comparison with GFP-AtRab75 and 35S::GFP:δTIP tonoplast fusion protein expressing arabidopsis lines. These seedlings were observed under confocal microscopy with different buffer incubation treatments and under different stress conditions. GFP expressing 35S::GFP:δTIP tonoplast lines were looking similar to the control lines and differ under stress conditions. Movement of cytoplasmic invaginations within the tonoplast and cytoplasmic sub vesicle or bulb budding during cytoplasmic streaming was observed in hypocotyls of At-GFP tonoplast plants. We found the cytoplasmic bulbs/ vesicles or sub vesicle formation from the plasma membrane. The streaming speed also depends on the incubation medium in which the specimen was incubated, indicating that the external stimuli as well as internal stimuli can alter the speed of streaming

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