The effect of Ni(II), Zn(II), Cu(II), Co(II) and Pd(II) ions on racemisation of hydroxy α-amino acids

The study examined the effect of Ni(II), Zn(II), Cu(II), Co(II) and Pd(II) ions on the rate of racemisation of L -serine and L -threonine. All ions except Ni(II) enhanced the racemisation of serine; the retarding effect of Ni(II) increased with ion concentration. Both Zn(II) and Ni(II) ions retarded the racemisation of threonine.