Several alpha-dideuterated dodecanoyl amino acids are investigated as chiral dopants with the chiral host potassium tetradecanoyl-L-alaninate during the preparation of amphiphlic cholesteric liquid crystals. Temperature dependent laser diffraction twist and D-2-NMR nuclear quadrupolar splittings measurements are made. The temperature gradient of the twist is thought to be a function of the micelle shape and anisotropy. The spectral multiplicity of the prochiral alpha-deutrons in the enantiomers is not visualized through NMR and hence no direct connection could be made between the molecular and bulk chirality. In two of the chiral dopants, where the precursor amino acids are L-isoleucine and L-leucine, the smaller D-2-NMR quadrupolar splitting moves through zero. This phenomenon is due to the molecular reorientation, where the angle of the axis projected in the CD2 plane, which orients with respect to magnetic field direction, being near to the magic angle in respect to the CD bond.