Solvent Extraction Research and Development, Japan
Online ISSN : 2188-4765
Print ISSN : 1341-7215
ISSN-L : 1341-7215
Notes
Up-Hill Transport of Tryptophan through Polymer Inclusion Membrane Containing Aliquat 336
Michiaki MATSUMOTO Noritake KITAYoshiro TAHARA
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2023 Volume 30 Issue 2 Pages 177-181

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Abstract

Tryptophan, which is an essential amino acid, is used as a nutrient enhancer, a preservative, and a feed additive. Development of a cost-effective and straightforward separation technique is still required to extract and purify tryptophan in the bioproduction processes. We conducted permeation of tryptophan through poly(vinyl chloride)-based membrane containing Aliquat 336 as a carrier. Tryptophan successfully permeated through the membranes against its concentration gradient when the feed and receiving solutions were prepared by 0.1 mol/dm3 sodium hydroxide solution and hydrochloric acid, respectively. The up-hill transport of tryptophan was achieved and more than 85% of tryptophan in the feed solution was recovered.

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© 2023 Japan Association of Solvent Extraction
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