Spectroscopy and Spectral Analysis, Volume. 31, Issue 11, 2961(2011)
Raman Spectral Analysis of Theanine
The L-theanine was tested using confocal Raman microscopy. Obvious Raman bands were showed in the range of 250~1 700 and 2 800~3 000 cm-1. The Raman bands were assigned with a preliminary analysis and the characteristic vibrational modes were gained in different range of wave numbers. Eight strong Raman bands were observed in the Raman spectra at 321, 900, 938, 1 153, 1 312, 1 358, 1 454 and 1 647 cm-1, respectively. They are the characteristic Raman bands of L-theanine. The results showed that Raman spectroscopy might be a new kind of precise, direct and fast detecting method for theanine.
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CHEN Yong-jian, CHEN Rong, LI Yong-zeng, HUANG Zu-fang, CHEN Jie-si, LIN Duo, XI Gang-qin. Raman Spectral Analysis of Theanine[J]. Spectroscopy and Spectral Analysis, 2011, 31(11): 2961
Received: Dec. 14, 2010
Accepted: --
Published Online: Dec. 22, 2011
The Author Email: Yong-jian CHEN (yjchen007@163.com)