摘要
The conformational behaviors of monosodium glutamate （MSG） in a dehydration process were studied by Micro-Raman spectroscopy in combination with Hartree-Fock calculations using 6-3 1＋G^＊ method. The dehydration process of the MSG droplet was performed by decreasing the ambient relative humidity （RH）. The intensity ratio of the 935 cm^-1 band to 884 cm^-1 band （I935/ 1884） kept decreasing when RH decreased. By optimizing the geometries with different fixed dihedral angles, the downtrend of （I935/I884） is found to be due to the reduction of MSG molecular volume.
The conformational behaviors of monosodium glutamate （MSG） in a dehydration process were studied by Micro-Raman spectroscopy in combination with Hartree-Fock calculations using 6-3 1＋G^＊ method. The dehydration process of the MSG droplet was performed by decreasing the ambient relative humidity （RH）. The intensity ratio of the 935 cm^-1 band to 884 cm^-1 band （I935/ 1884） kept decreasing when RH decreased. By optimizing the geometries with different fixed dihedral angles, the downtrend of （I935/I884） is found to be due to the reduction of MSG molecular volume.
基金
supported by the NSFC(Nos.20673010,20933001 and 20873006)
the 111 Project B07012
