| 光谱学与光谱分析 |
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| Raman Spectral Analysis of Theanine |
| CHEN Yong-jian，CHEN Rong*，LI Yong-zeng，HUANG Zu-fang，CHEN Jie-si，LIN Duo，XI Gang-qin |
| Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, Fujian Normal University, Fuzhou 350007, China |
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Abstract 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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Received: 2010-12-14
Accepted: 2011-03-02
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Corresponding Authors:
CHEN Rong
E-mail: chenr@fjnu.edu.cn
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