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IJBB Vol.43(5) [October 2006] >


Title: Extraction and carrier-facilitated transport of amino acids using synthetic non-cyclic receptors through bulk liquid membrane
Authors: Joshi, Pratibha
Joshi, Nidhi
Sharma, Uma
Keywords: Extraction
Liquid membrane
Carrier-facilitated transport
Issue Date: 2006
Publisher: CSIR
Abstract: The extraction and carrier-facilitated transport of amino acids (leucine, valine and glycine) was studied through chloroform bulk liquid membrane system using a series of non-cyclic receptors such as diethylene glycol (1), diethylene glycol dimethyl ether (2), diethylene glycol dibutyl ether (3), diethylene glycol dibenzoate (4), triethylene glycol (5) and tetraethylene glycol (6). The amount of amino acid extracted and transported depends mainly upon the structure and the concentration of the receptors and also on the concentration of amino acid. The receptors 1 to 4, having small chain length and flexible end groups, formed stable complexes with amino acids, and the flexibility of receptors in different conformational forms was responsible for their carrier ability, while the receptors 5 and 6, having larger chain length showed poor carrier ability. Hydrophobicity of amino acids also play an important role in the extraction as well as transport process.
Page(s): 323-326
ISSN: 0301-1208
Source:IJBB Vol.43(5) [October 2006]

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