10.1021/cg100152c.s003
Sekai Iwama
Sekai
Iwama
Masahiro Horiguchi
Masahiro
Horiguchi
Hiroyasu Sato
Hiroyasu
Sato
Yoshiaki Uchida
Yoshiaki
Uchida
Hiroki Takahashi
Hiroki
Takahashi
Hirohito Tsue
Hirohito
Tsue
Rui Tamura
Rui
Tamura
Observation of the Preferential Enrichment Phenomenon for Essential α-Amino Acids with a Racemic Crystal Structure
American Chemical Society
2010
alanine
attenuated
crystallization conditions
surface
Amino
sample
concentration
acid
crystal shape
enantiomerically
basis
characterization
mechanism
Essential
leucine
racemic
solvent
reflection
force microscopy observation
solubility
iii
ii
polymorphic transition
analysis
Racemic Crystal StructureThe
iv
Preferential Enrichment Phenomenon
spectroscopy
Acid
enrichment phenomenon
2010-06-02 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/Observation_of_the_Preferential_Enrichment_Phenomenon_for_Essential_Amino_Acids_with_a_Racemic_Crystal_Structure/2764960
The preferential enrichment phenomenon has been observed for two neutral α-amino acids, leucine and alanine, by applying kinetic crystallization conditions using high concentrations and appropriate solvents. The mechanism of preferential enrichment of leucine and alanine is proposed on the basis of (i) the difference in solubility between the racemic and enantiomerically pure samples, (ii) the observation of polymorphic transition during crystallization by in situ attenuated total reflection infrared spectroscopy, (iii) the characterization of deposited crystals by X-ray crystallographic analysis, and (iv) the optical microscopic or atomic force microscopy observation of the crystal shape or surface, respectively.