scholarly journals Transport of Indole 3-acetic Acid through Bulk Liquid Membrane Influence of Carrier in the Diffusion Process

2019 ◽  
Vol 70 (8) ◽  
pp. 2716-2719
Author(s):  
Ioana Diaconu ◽  
Ecaterina Anca Serban ◽  
Georgiana Ileana Badea ◽  
Elena Ruse
Keyword(s):  
Acetic Acid ◽  
Liquid Membrane ◽  
Chemical Potential ◽  
Potential Gradient ◽  
Membrane System ◽  
Extraction Constant ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Acid Complex ◽  
Indole 3 Acetic Acid

The paper presents a study of the phenomena that take place at membrane system interfaces in the process of indole-3-acetic acid (IAA) transport. The results were obtained in a bulk liquid membrane system using trioctylamine, tributylphosphate, trioctilphosphine oxide as carriers in chloroform. The main equilibriums that take place at the interface feed phase% membrane phase were identified and the diffusion coefficient of the indole-3-acetic acid complex (DLS) and the extraction constant (Kex) were assessed. The influence of the chemical potential gradient on these parameters was considered.

Separation of indole-3-acetic acid from tryptophan by bulk liquid membrane

2020 ◽  
Vol 16 ◽  
Author(s):  
Ioana Diaconu ◽  
H.Y. Aboul-Enein ◽  
Cristina Orbeci ◽  
A.A. Bunaciu ◽  
Ecaterina Anca Serban ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Transport Process ◽  
Liquid Membrane ◽  
Organic Substrate ◽  
Biologically Active ◽  
Trioctylphosphine Oxide ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Operational Parameter ◽  
Indole 3 Acetic Acid

Background: Indole-3-acetic acid (IAA) is an important growth hormone for plants obtained by biosynthesis from tryptophan. Aim: In this paper was studied the competitive transport of two biologically active compounds, indole-3-acetic acid (IAA) and tryptophan (TRP) through a liquid membrane. Methods: The separation of the two compounds was obtained using a hybrid liquid membrane system having as a carrier trioctylphosphine oxide (TOPO). Results: The most important operational parameter of the system were studied, pH influence on the efficiency of the transport process in correlation with the speciation diagrams of the two compounds: TRP and IAA. The evaluation of the transport process was performed through calculating the composition of the phases at the end of the transport process and the organic substrate flow at the membranes exit. Conclusion: Due to the transport efficiency of over 90% in the case of IAA and the high selectivity at the transport between IAA and TRP, the procedure can be applied at the sample preparation containing these analytes.

New bulk liquid membrane oscillator composed of two coupled oscillators with diffusion-mediated physical coupling

2015 ◽  
Vol 69 (9) ◽  
Author(s):  
Maria Szpakowska ◽  
Elżbieta Płocharska-Jankowska ◽  
Ottó B. Nagy
Keyword(s):  
Mass Transfer ◽  
Intercellular Communication ◽  
Coupled Oscillators ◽  
Liquid Membrane ◽  
Membrane System ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
New Type ◽  
Membrane Oscillator ◽  
Acceptor Phase

AbstractA new type of bulk liquid membrane system, which represents the first example of a bulk liquid membrane oscillator characterised by the presence of two coupled oscillators, is described. When the benzyldimethyltetradecylammonium chloride surfactant undergoes an oscillatory mass transfer through a nitromethane liquid membrane, a new liquid layer (phase X) appears between the membrane and the acceptor phase. Kinetic analysis provides evidence that the whole system is composed of two coupled oscillators with diffusion-mediated physical coupling. The first component oscillator (based on nitromethane) of lower frequency delivers the driving material to the second one (phase X-based oscillator) leading to additional higher frequency oscillations. A new molecular mechanism is proposed for interpreting the experimental observations. The results might enhance understanding of intercellular communication in biology, where periodic signalling is more efficient than any other type of signalling mode.

scholarly journals Extraction and Transport of Amino Acids Using Kryptofix 5 as Carrier through Liquid Membrane

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Pankaj Raizada ◽  
Uma Sharma
Keyword(s):  
Amino Acids ◽  
Liquid Membrane ◽  
High Surface ◽  
High Surface Area ◽  
Membrane System ◽  
Extraction Process ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Aromatic Donor ◽  
Egg Shell

The present work explores membrane-mediated extraction and transport studies of amino acids through artificial bulk liquid membrane system with kryptofix 5 as a carrier. The various reaction parameters such as amino acid concentration, carrier concentration, time, pH, and stirring effect were studied to optimize reaction conditions. The stirring of source and receiving phases increased the efficiency of extraction process. Noncyclic receptor kryptofix 5 with five oxyethylene units and terminal aromatic donor end groups governs its transport and extraction efficiency. The extraction and transport efficiency followed the following trend: valine > alanine > glycine > threonine. Supported liquid membrane (SLM) studies were performed using cellulose nitrate, PTFE, eggshell, and onion membranes. The egg shell membrane support proved to be most efficient due to intricate network of water insoluble proteins fibers with very high surface area and homogeneity.

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