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 CM  Vol.2 No.4 , December 2011
Discrimination of 11 Chinese Materia Medica from Umbelliferae by Electronic Nose
Abstract: In this paper, electronic nose (E-nose) was used to discriminate the 11 Chinese Materia Medica (CMM) from Umbelliferae by the difference of their odors. The E-nose generated data were analyzed by discriminant function analysis (DFA) and the responses of 18 sensors of E-nose were evaluated by CA analysis. Results showed that a rapid evaluation of complex response of the samples could be obtained, in combination with DFA, SQC and the CA analysis of the E-nose was given better results in the recognition values of the odor of the 11 CMM. All the 11 CMM could be distinguished by E-nose coupled with DFA, sensor 2, 3, 4, 5, 11, 13 and 15 were found to be able to better discriminate between the CMM samples. The CMM from Umbelliferae produced from different areas and processed with different methods could be distinguished by the E-nose, too. The results of the similarity of fingerprints of the E-nose are fitted with the TCM records about the property (yaoxing), channel tropism (guijing), function and usage of the CMM. The E-nose is a technology that can reflect the holistic odor of a CMM and is relevant to the TCM doctor’s practical identification. The odor of CMM can be expressed by objective data instead of subjective sense by human nose. Based on the sensor`s intensity of E-nose, the fingerprint of a CMM can be established, too. Although the E-nose has so many advantages, only use E-nose technology is not enough to control the quality of a CMM. It must be combined with the other macroscopic discriminating technology, such as the E-tongue, the E-eye, to have a holistic evaluation of a CMM.
Cite this paper: nullQ. Fang, M. Zhang, Y. Yang, X. Zhou, H. Jia, P. Fu and L. Huang, "Discrimination of 11 Chinese Materia Medica from Umbelliferae by Electronic Nose," Chinese Medicine, Vol. 2 No. 4, 2011, pp. 143-153. doi: 10.4236/cm.2011.24024.
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