Chiral separations chitin

Sueyoshi et al. [103] used chitin nanofibers for chiral separation. The manbrane showed separation ability by adopting concentration gradient as a driving force for membrane transport. In simple words, the chitin nanoflbrous manbrane selectively transported the D-isomer of glutamic acid (Glu), phenylalanine (Phe), and lysine (Lys) from the corresponding racemic amino acid mixtures. 

Sueyoshi, Y, Hasimoto, T., Yoshikawa, M., Ifuku, S., 2012, Chitin nanofiber membranes for chiral separation. Sustain Agric Res 1(1) 42. 

Revol J.R, Li J., Godbout L., Orts W.J., and MarchessaultR.H. 1996. Chitin crystallite suspension in waterphase separation and chiral nematic ordering. In A. Domard, C. Jeuniaux, R. A.A. Muzzarelli, and G. Roberts (Eds.), Advance Chitin Sciences, pp. 355-360, Jaques Andre, Lyon, France. 

Rozylo and Malinowska [39] proposed the use of these polymers to separate optical antipodes in TLC in view of the complexing property of Cu(II) retained on the chitin surface, in analogy with chiral ligand exchange chromatography (CLEC). These plates were not considered as CCPs (see Chapter 5) because they were constituted by a chiral sorbent impregnated with an achiral selector, in the opposite way to the CCPs formation. 

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