Citation: Jing Jing Shou, Guang Zeng, Hao Zhang, Yun Hong Zhang. Micro-Raman studies on the conformational behaviors of monosodium glutamate in dehydration process[J]. Chinese Chemical Letters, ;2011, 22(7): 855-858. doi: 10.1016/j.cclet.2010.12.022 shu

Micro-Raman studies on the conformational behaviors of monosodium glutamate in dehydration process

The Institute of Chemical Physics, Key Laboratory of Cluster Science, Beijing Institute of Technology, Beijing 100081, China

Received Date: 15 October 2010

Fund Project: 20933001 and 20873006) and by the 111 Project B07012.This work was supported by the NSFC (Nos.20673010

The conformational behaviors of monosodium glutamate (MSG) in a dehydration process were studied by Micro-Raman spectroscopy in combination with Hartree-Fock calculations using 6-31+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/ I₈₈₄) 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.
- Raman,
- MSG,
- Calculation,
- Dehydration,
- Intensity,
- Dihedral angle
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