Influence of amino acid additives on solution behaviour of L-alanine

  • Muhamad Fitri Othman Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450Shah Alam, Selangor
  • Nornizar Anuar Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450Shah Alam, Selangor
  • Noor Fitrah Abu Bakar Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450Shah Alam, Selangor
  • Norazah Abdul Rahman Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450Shah Alam, Selangor
Keywords: Amino acid, L-alanine, Crystallization, Solubility

Abstract

The solubility experiment of L-alanine solution was performed in a 250ml jacketed glass crystallizer without and with amino acid additives at temperature from 15oC to 75oC by means of gravimetric method. On the whole, L-leucine additive significantly altered the solubility of L-alanine and Glycine additive caused an erratic pattern on the solubility data of L-alanine. The hydrophobic methyl side chain of L-leucine additives is believed to contribute to the formation of water clathrate in the solution which affected the interaction of L-alanine molecules in water solvent and thus modified the solubility of L-alanine. Finally, thermodynamic data analysis of L-alanine solution was extensively assessed. The negative deviation of L-alanine from the ideal solution is as a result of high solute-solvent interaction, which is due to the hydrophobicity and clathrate phenomenon of the water molecules in the solution.

Chemical Engineering Research Bulletin 20(2018) 23-29

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Abstract
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PDF
470
Published
2018-06-06
How to Cite
Othman, M. F., Anuar, N., Bakar, N. F., & Rahman, N. (2018). Influence of amino acid additives on solution behaviour of L-alanine. Chemical Engineering Research Bulletin, 20(1), 23-29. https://doi.org/10.3329/cerb.v20i1.36927
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